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Autodesk Robot Structural Analysis Professional 2010 page:1
Autodesk Robot Structural
Analysis Professional 2010
Training Manual - Metric Version
NOVEMBER 2009
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page:2 Autodesk Robot Structural Analysis Professional 2010
Ngi dch: CAO TRUNG THNH
a ch: 52XD8 Trng i Hc Xy Dng.
Ps: trong qu trnh dch do vn Ting Anh hn ch cng s eo hp v t ng chuyn ngnh mongcc bn c ti liu thng cm
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THNG TIN TNG QUAN ..................................................................................................................................5
CI T V THIT LP .................................................................................................................................5LA CHN LAYOUT .......................................................................................................................................6THUC TNH MENU ........................................................................................................................................6BNG D LIU V KT QU ........................................................................................................................7CI T TRUY BT IM .............................................................................................................................7
HIN TH KCH THC KT CU ................................................................................................................8KIM TRA I TNG ..................................................................................................................................8
1. THIT K B TNG CT THP KHUNG 2D .......... ............. ............. ............ ............. ........... ........9
1.1 NH NGHA M HNH ...........................................................................................................................101.1.1 nh ngha phn t ...............................................................................................................................111.1.2 nh ngha th vin kt cu ..................................................................................................................121.1.3 nh ngha gi ........... ............. ............ ............. ........... ............. ............. ............ ........... ............. ......141.1.4 nh ngha cc trng hp ti ..............................................................................................................141.1.5 nh ngha ti trng cc trng hp ti ...............................................................................................15
1.2 PHN TCH KT CU ..............................................................................................................................161.3 PHN TCH KT QU ..............................................................................................................................171.4 THIT K DM BTCT ..............................................................................................................................181.5 THIT K CT BTCT ...............................................................................................................................19
1.6 THIT K NHIU PHN T BTCT .........................................................................................................212. THIT K THP KHUNG 2D ............ ............. ........... ............. ............. ............ ............. ........... ......23
2.1 NH NGHA M HNH ...........................................................................................................................242.2 NH NGHA CC TRNG HP TI V TI TRNG ........... ............ ............. ........... ............. ..........252.3 NH NGHA TI TRNG DO TUYT/GI ...........................................................................................262.4 PHN TCH KT CU ..............................................................................................................................272.5 PHN TCH CHI TIT ..............................................................................................................................272.6 PHN TCH TON B .............................................................................................................................282.7 THIT K THP ........................................................................................................................................292.8 B TR BN IN .........................................................................................................................................32
3. PHN TCH N HI-DO................... ............. ............ ............. ........... ............. ............ ............. ...34
3.1 NH NGHA M HNH ............ ............. ........... ............. ............ ............. ........... ............. ............ ............34
3.1.1 CHN TIU CHUN ...........................................................................................................................343.1.2 nh ngha h trc kt cu ....................................................................................................................353.1.3 nh ngha phn t ...............................................................................................................................363.1.4 nh ngha th vin kt cu ..................................................................................................................383.1.5 Thm nt ph ........................................................................................................................................393.1.6 nh ngha gi trn thanh ........... ............. ............ ............ ............ ............. ............ ............. ........... ..393.1.7 nh ngha gi .................................................................................................................................403.1.8 nh ngha khim khuyt hnh hc ........................................................................................................403.1.9 nh ngha cc trng hp ti ..............................................................................................................413.1.10 nh ngha ti trng cc trng hp ti.............. ........... ............. ............. ............ ............. ........... ......413.1.11 S pht sinh ti trng tuyt/gi ...........................................................................................................423.1.12 T ng to t hp ti trng tiu chun ........... ............. ............. ............ ........... ............. ............. .......42
3.2 PHN TCH KT CU V KIM TRA KT QU ............ ............. ........... ............ ............. ............. .......423.3 PHN TCH N HI- DO ........... ............ ............. ........... ............. ............. ............ ............. ........... ......43
3.3.1 Thay i nh ngha cc trng hp ti ................................................................................................433.3.2 Phn tch kt cu ........... ............ ............. ........... ............. ............. ............ ........... ............. ............. .......443.3.3 Thay i tit din thanh cho phn tch n hi-do ........... ............. ............. ............ ............. ........... ......443.3.4 Phn tch kt cu v kim tra kt qu ............. ............. ............ ............. ........... ............. ............. ...........45
4. TI TRNG DI CHUYN KHUNG 2D ............ ........... ............. ............. ............ ............. ........... ......46
4.1 NH NGHA M HNH ...........................................................................................................................474.1.1 nh ngha phn t ...............................................................................................................................474.1.2 nh ngha th vin kt cu (1 mi v 1 dm cu trc di chuyn bn trn) ............ ........... ............. ......484.1.3 nh ngha gi .................................................................................................................................504.1.4 nh ngha ti trng kt cu .................................................................................................................514.1.5 nh ngha ti trng di chuyn p dng cho kt cu ........... ........... ............. ............. ............ ............. ...52
4.2 PHN TCH KT CU ........... ........... ............. ............. ............ ........... ............. ............. ............ ............. ...54
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4.3 BIU DIN XE V TRNG HP TI TRNG DI CHUYN ............. ........... ............. ............ ............544.4 KT QU PHN TCH ........... ........... ............. ............ ............. ........... ............. ............. ............ ............. ...554.5 NG NH HNG ............ ............ ............. ............ ............ ............ ............. ............ ............ ............ ..57
5. TI TRNG DI CHUYN KHUNG 3D ............ ........... ............. ............. ............ ............. ........... ......59
5.1 NH NGHA M HNH ............ ............. ........... ............. ............ ............. ........... ............. ............ ............605.2 PHN TCH KT CU ........... ........... ............. ............ ............. ........... ............. ............. ............ ............. ...715.3 THIT K THP ............ ............. ........... ............. ............. ............ ............. ........... ............. ............ ............73
5.4 NG NH HNG ............ ............ ............. ............ ............ ............ ............. ............ ............ ............ ..776. KT CU THP 3D VI MI NI THP ........... ............ ........... ............. ............. ............ ............. ...79
6.1 NH NGHA M HNH ............ ............. ........... ............. ............ ............. ........... ............. ............ ............796.2 PHN TCH KT CU ........... ........... ............. ............ ............. ........... ............. ............. ............ ............. ...846.3 KT QU PHN TCH ........... ........... ............. ............ ............. ........... ............. ............. ............ ............. ...846.4 THIT K THP ............. ............ ........... ............. ............. ............ ............. ........... ............. ............ ............856.5 THIT K MI NI THP ........... ............ ............. ........... ............. ............ ............. ........... ............. ..........86
7. KHUNG THP 3D DNG KHI ............. ............ ........... ............. ............. ............ ............. ........... ......88
7.1 NH NGHA M HNH ............ ............. ........... ............. ............ ............. ........... ............. ............ ............897.2 TNH TON V KT QU PHN TCH .................................................................................................95
8. NH NGHA V PHN TCH 1 SN B TNG ........... ........... ............. ............. ............ ............. ...98
8.1 NH NGHA M HNH ...........................................................................................................................988.1.1 nh ngha ng bao ..........................................................................................................................988.1.2 nh ngha li chia ........... ............. ............. ............ ............ ............ ............. ............ ............ ............ ..998.1.3 Thuc tnh ca sn ............. ........... ............. ............ ............. ........... ............. ............. ............ ............. ...998.1.4 nh ngha tm v l m.............. ............ ............. ........... ............. ............. ............ ............. ........... ... 1008.1.5 nh ngha gi ........... ............. ............ ............. ........... ............. ............. ............ ............. ........... ... 1008.1.6 nh ngha cc trng hp ti .......... ............. ............. ............ ............. ........... ............. ............ ......... 1028.1.7 nh ngha ti trng cho cc trng hp ti ........... ............. ............. ........... ............. ............ ............. 1028.1.8 Hin th cc trng hp ti trng ............ ............. ........... ............. ............. ............ ............. ........... ... 104
8.2 PHN TCH KT CU/KT QU (DNG BN TRN TM CT ).............. ............. ............. .... 1058.3 TNH TON DIN TCH THP YU CU (L THUYT) ............. ........... ............ ............. ............. .... 1088.4. TNH TON DIN TCH THP CUNG CP ( THC) ........................................................................ 110
9. KT CU KHI RN 3D ........... ............. ............ ........... ............. ............. ............ ............. ........... ... 112
9.1 NH NGHA M HNH ........................................................................................................................ 1149.2 PHN TCH KT CU ........................................................................................................................... 1279.3 BIU DIN KT QU DI DNG BN ............ ............ ............ ............. ............ ............ ........... 127
10. KT CU V ............. ............ ............ ............ ............. ............. ............ ............ ............ ............. .... 129
10.1 THNG CHA ............. ............ ........... ............. ............. ............ ............. ........... ............. ............ ......... 12910.2 THNG LNH ............ ............ ............ ............. ............ ............ ............ ............. ............ ............. .......... 13410.3 NG DN ............ ............. ............ ............ ............ ............. ............. ............ ........... ............. ............. .... 13610.4 KT CU I XNG TRC .......... ............. ............. ............ ........... ............. ............. ............ ............. 140
11. NG CU 1 NHP 3D VI TI TRNG DI CHUYN ............ ............. ........... ............. ....... 145
11.1 NH NGHA M HNH ...................................................................................................................... 14711.1.1 nh ngha hnh hc kt cu ............................................................................................................ 14711.1.2 nh ngha ti trng ............ ........... ............. ............. ............ ............. ........... ............. ............ ......... 152
11.1.3 nh ngha ti trng di chuyn p dng cho sn cu ............... ............ ............. ........... ............. ....... 15611.2 PHN TCH KT CU ......................................................................................................................... 15911.2.1 Biu din kt qu di dng bn ................................................................................................. 160
11.3 THIT K B PHN KT CU .......................................................................................................... 16111.3.1 Thit k thp .................................................................................................................................... 162
11.4 PHN TCH TI TRNG P NG THEO THI GIAN ............. ........... ............ ............. ............. .... 169
12. NH NGHA TIT DIN ............ ........... ............. ............ ............. ........... ............. ............. ........ 174
12.1 TIT DIN KHI ........... ............. ............ ............. ........... ............. ............ ............. ........... ............. ....... 17412.2 TIT DIN THNH MNG ........... ............. ............ ........... ............. ............. ............ ............. ........... ... 176
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Thng tin chung
Setup and Preferences
Preferences c hin th t menu Tools > Preferences. y c nhm thnh nhng ci t chungti ty bin giao din ngi dng v nh ngha cch lm vic ca chng trnh. y bn c th chnngn ng lm vic( ngn ng ca giao din), ci t vng ( tiu chun,d liu) v ngn ng in n. Ttc chng c ci t c lp, bi vy bn c th lm vic vi 1 ngn ng( chn t 10 ci hin th) theo
l tiu chun v ti liu in n 1 ngn ng khc.Cng trong Preferences, bn c th thay i hin th cc phn t ring l bng cch s dng nhngmu nh ngha sn hay do chnh bn to ra.
Trc khi bt u nh ngha kt cu, bn nn ci t ngn ng lm vic v tiu chun p dng trongd n nh hnh bn di:
Xc nhn thao tc bng cch n nt, v sau chn t menu chnh Tools / Job Preferences. Ci ttiu chun v tc ng nh hnh bn di:
Job Preferences c nhm trong 6 mc: units, materials, databases, design codes, structureanalysis and work parameters.Autodesk Robot Structural Analysis Professional bao gm hn 60 d liu tit din v vt liu t khpni trn th gii. Vi 1 chui 70 tiu chun thit k c a vo, k s kt cu c th lm vic vi hnhdng tit din ca quc gia chn la, n v Inch hay mt, v chn tiu chun xy dng quc gia bntrong cng vi cch tch hp.
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Chn la Layout
iu ny l cn thit chn la layout thch hp trong tin trnh nh ngha kt cu. Layouts c truy cp
bng cc click hp danh sch trn nh gc bn phi ca mn hnh chnh ci m danh sch layout biu din
trong hnh bn di :
Menu ng cnh
Khi lm vic trong mn hnh ha, 1 menu ng cnh c th kch hot ( nh hnh di) bng cch nnt chut phi.
Menu cho php thc hin nhiu hu ch ( v s dng thng xuyn) tin trnh khi chng trnh thchin trc y c ra lnh.
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Bng d liu v kt qu
Kch thc kt cu c th c hiu chnh bi bng cng c thch hp. Bng thch hp vi layout hinhnh hin th khi chn layout. Trong cch sp xp c th thc hin hiu chnh tng th tin trnh, nns dng la chn View menu / Tables t menu chnh. S xut hin hp thoi Tables: Data andResults.
Trong hp thoi ny, nn tch vo du hng mc yu cu v n nt OK. 1 bng cha d liu s cto ra cho mi hng mc chn. Ln na tab Edit c kch hot trong gc tri bn di ca 1 bng cho, ngi s dng c th thc hin hiu chnh kch thc kt cu.
Ci t bt im
Hp thoi Snap Settings hin th khi n biu tng ( biu tng u tin c b tr di gcbn tri mn hnh).
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Hin th kch thc kt cu
Hp thoi Displaym khi n biu tng (biu tng th ba gc di cng bn tri mn hnh)nh hnh di.
Tab hin th cho php truy cp d liu trn kch thc kt. La chn ny cng hin th t menuchnh bng cch chn lnh View menu / Display.
Kim tra i tng
Object Inspector c b tr dc bn tri giao din ngi dng. S dng cng c ny ngi dng c th: Trnh by ni dung d n trong 1 cch c trt t Chn phn t ci s thc hin trn lnh c chn Trnh by v hiu chnh thuc tnh i tng d n ( c hai phn t n l v ton b itng ) Lc mu phn t To v qun l ti liu ca d n
Object Inspector cha 1 vi ch phn t c trng. Tabs chn nhng ch nm dc bn di hpthoi.
Object Inspector (tabs: Geometry and Groups)
Steel Connection Inspector
RC Component Inspector
Inspector - Preparation of Results
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Ch : Trong v d bn di theo nguyn tc gi nh xc nh chn la caim bt u v cui ca kt cu thanh:V d, (0,0,6) (8,0,6) ngha l 1 thanh bt u b tr ti nt vi ta nh sau x =
0.0, y = 0.0 and z = 6.0 and im cui ca thanh ti nt vi ta nh sau x = 8.0, y= 0.0 and z = 6.0. Du phn cch ( ci t trong h iu hnh ) ring r vi ta ni tip bng cch s dng 1 du phy , gia gi tr..
1. Thit k b tng ct thp - khung 2DV d ny a ra cch nh ngha, phn tch v thit k 1 khung 2D n gin minh ha trong hnhbn di. Khung c to bi khung BTCT v gin to bi cch s dng th vin kt cu inhnh trong chng trnh RSAP.
n v d liu: (m) v (kN).
4 trong 5 trng hp ti trng p dng cho kt cu c hin th trong bn v bn di.
LOAD CASE 2 LOAD CASE 3
LOAD CASE 4 LOAD CASE 5
Nhng nguyn tc sau y s c p dng trong sut qu trnh nh ngha kt: bt k k t biu tng no ngha l biu tng thch hp s c n vi nt chut tri ( x ) c gi tr c chn l x trong hp thoi hoc nhp gi tr x LMC v RMC - nhng ch vit tt cho Click chut tri v Click chut phi. RSAP - vit tt cho Autodesk Robot Structural Analysis Professional.
nh ngha kt cu bt u chy chng trnh RSAP( n vo biu tng thch hp hoc chn lnh ttaskbar). Ca s ha s xut hin.
Chn icon trong hng u 2D Frame Design).
Ch : D liu tit din Chu u c s dng trong v d ny.
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1.1 nh ngha m hnh
QU TRNH THC HIN
Chn icon Axis Definition tthanh cng c kt cu.Trn tab X:Position: (0)Number of repetitions: (4)Distance: (6)
Numbering: (1, 2, 3 ...)
LMC trn nt Insert
LMC trn tab Z
Trn tab Z:Position: (0)Number of Repetitions: (3)Distance: (3)
Numbering: (A, B, C ...)
LMC nt Insert
Apply, Close
MIU T
Bt u nh ngha trc kt cu. Hp thoi StructuralAxis xut hin trn mn hnh.
nh ngha kch thc phng ng.
Trc ng c nh ngha v s hin th trn Set ofCreated Axis field.
Bt u nh ngha kch thc phng ngang.
nh ngha kch thc phng ngang.
Trc ngang c nh ngha v s xut hin trong Set OfCreated Axes field.
To xong trc cu kin v ng hp thoi StructuralAxes.H trc kt cu s xut hin trn mn hnh nh hnh di.
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1.1.1 nh ngha cc thnh phn
Chn Bar Section icon tthanh cng c m hnh kt.
Chn New Section
Definition icon.
LMC vo I family icon,chn (HEB) t danh sch Family,v chn (HED 240) t danh schtit dinAdd
LMC trong Section Type field ( gcdi bn phi thoaitt v chn RCbeam.Trong nhn Label enter B 45x60.
Di Basic Dimensions, g vo b =(45) cm, h = (60) cmAdd, Close
Close
Chn Bars icon t thanh cngc m hnh kt cu
LMC vo Bar type field v chn RCcolumnLMC vo Section field v chn loi:(C 45x45)
LMC vo Beginning( mu nn thay i thnh xanh)
Nhp theo nhng im trongBeginningv End.Beginning: (0,0) End: (0,3), AddBeginning; (0,3) End: (0,6), Add
RMC bn trong vng hin th vchn lnh Select t menu ngcnh
CTRL+A
Edit menu / Edit / Translate
LMC trn dX,dZ=: (6,0)LMC trn:Numbering Increment Nodes: (1)Numbering Increment Elements:(1)
M hp thoi Sections.
M hp thoi NewSection.
nh ngha tit din mi. Tit din t d liu tit dinChu u (European) c s dng.
nh ngha 1 tit din dm BTCT.
ng hp thoi Sections .
M hp thoi Bars.
Chn thuc tnh ca thanh.
Bt u v thanh kt cu ( Ct kt cu).
Xc nh v tr 2 thanh trn trc kt cu s 1.
M menu ng cnh v chn . Con chut s thay ihnh dng thnh bn tay.
Chn tt c thanh. ( Nh kch hot trc ca s mn
hnh.)
M hp thoi Translation.
nh ngha vecto chuyn v v s gia cho nt v thanh.
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LMC trn Number of repetitions:(4)
Execute, Close
LMC trn Bar type trong hpthoi Bars v chn RC beamLMC trn Section v chn
(B 45x60)
LMC trn Beginning( mu nn thay i thnh xanh)
Beginning: (0,3) End: (6,3), AddBeginning: (6,3) End: (12,3), AddBeginning: (12,3) End: (18,3), AddBeginning: (18,3) End: (24,3), Add
Close
View menu / Display
LMC Bars tabTch la chn Section-Shape,Apply, OK
nh ngha s bc lp( s phn t sao chp) trong qutrnh di chuyn.
Ct c sao chp; ng hp thoi Translation.
Bt u nh ngha dm kt cu v chn thuc tnh chochng.
Bt u xc nh v tr thanh kt cu.
Xc nh v tr dm trn trc kt cu B.
ng hp thoi Bars .
M hp thoi Display.
La chn ny cho php hin th hnh dng tit nghiaxthanhkt cu c nh ngha. Thanh s c hin th trn mnhnh nh hnh di.
1.1.2 nh ngha th vin kt cu
View menu / Display M hp thoi Display
LMC Nodes tab La chn ny cho php hin th s nt ti im cui caChn Node numbers, mi thanh .
Apply, OK
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Chn Library Structure iconc b tr thanh cng c m hnhkt cu.
LMC (click p) vo icon
LMC vo Length L trnDimensionstab: (24)
LMC vo Height H: (3)
LMC vo Number of Fields:(12)
LMC vo the Sectionstab;Chn tt c thanh bin ( trn v di)gn (DCED 90x10) v ccthanh xin v ng gn (CAE
70x7)LMC vo Inserttab
LMC vo Insertion point , chnnt s 3 theo h ta : (0,0,6)
Apply, OK
View menu / Display
M hp thoi Typical Structures v bt u nh nghath vin kt cu.
Chn gin tam gic loi 1. Hp thoi Merge Structurexut hin v kch thc gin c th c xc nh.
Xc nh di gin (N cng c th xc nh bng thtrong vng hin th).
nh ngha chiu cao gin (N cng c th xc nh bng th trong vng hin th).Xc nh s bc chia ca gin.
Gn hnh dng thanh gin.
Xc nh nt bt u gin .
Xc nh ng v tr gin v ng hp thoi Mergestructure . Kt cu c xc nh xut hin nh hnhdi.
M hp thoi Display
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LMC Nodes tabTt la chn Node numbersLMC Structure tabTt la chn Structural axis,Apply, OK
Geometry menu / Releases
LMC vo Pinned-Fixed kiu giiphng lin kt
LMC vo Current selection, chuynsang vng hin th v ch vo ( dicon tr qua) thanh ng cao nhtca gin ( thanh gia nt 9 v 29)
Close
M hp thoi Releases.
Chn kiu gii phng lin kt s c gn cho thanhgin
Khi chn thanh; CH : mi tn xut hin sng trn thanhgin sau lc ch vo thanh mi tn hng ln trn( hngca lin kt gii phng c ngha: ti nt u tin khp cgn, ti nt cn li ngm c gn).
ng hp thoi Releases
1.1.3 nh ngha gi
Chn Supports icon t thanhcng c m hnh kt cu
LMC vo Current Selection trnNodaltab ( con chut s nhp nhytrong trng)
Chuyn sang vng hin th bngcch n nt chut tri; chn tt cnt di ct trong ca s
Trong hp thoi Supports chngi l ngm ( gi s c nnh)
Apply, Close
M hp thoi Supports
Chn nt kt cu ni gi c xc nh.
Chn nt: 1to13by3 s c nhp vo trng CurrentSelection.
Chn loi gi .
Chn loi gi c gn ti nt kt cu, ng hp thoiSupports
1.1.4 nh ngha cc trng hp ti
Chn Load Types icon tthanh cng c m hnh kt cu
LMC vo nt New
LMC vo Nature: (Live1)
LMC vo nt NewLMC vo nt New
LMC voNature: (Wind)
M hp thoi Load Types.
nh ngha dead load (self-weight) vi tn chun lDL1.
Chn loi ti t nhin: live.
nh ngha 2 trng hp ti live load vi tn chun lLL1 v LL2.
Chn loi ti t nhin: wind.
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LMC vo nt New nh ngha loi ti trng gi vi tn chun l WIND1.
LMC vo Nature: (Snow) Chn loi ti t nhin: snow.
LMC vo nt New, Close nh ngha loi ti trng tuyt vi tn chun l SN1V ng hp thoi Load Types.
1.1.5 nh ngha ti trng cho cc trng hp ti
Loads menu / Load Table
, Chn Restore Down icontrong gc trn cng bn phi bngview.B tr bng trong 1 phn di mnhnh nh 1 cch hiu chnh rng v hin th m hnh kt cu
LMC chn ti trng th 2 trong ctCase, chn trng hp ti 2nd LL1t danh sch
LMC trn ct Load Type, chnuniformload
LMC trn trng trong ct List,chn tt c dm b tng trn mnhnh hin th ( thanh 11to14)
LMC trn trng trong ct "PZ=" vnhp gi tr: (-40)
LMC trn trng tip theo trongct Case, chn trng hp ti 3rdLL2 t danh sch
LMC trn ct Load Type , chntrapezoidal load (2p)
LMC trn trng trong ct List, chnhin th trong vng ha nhp utin bn tri ca dm BT (thanh 11)
LMC trn trng trong ct"PZ1=" v nhp gi tr: (-20)LMC trong trng X2 v nhp gi tr:(1.0)LMC trn trng trong ct "PZ2="v nhp gi tr: (-25)
LMC trn trng k tip trong ctCase v chn trng hp ti 4thWIND1 t danh sch
Opens a table for loads acting in defined load cases.
Gim kch thc bng nh th c th hin th ti trng. (bn cng c th dng Windows/Align Windows sau khi cas ti trng thay i kch thc.)
Tnh ti ( hng -Z) t ng p dng cho tt c ktcu thanh
nh ngha ti trng cho trng hp ti th 2.
Chn loi ti trng.
Chn thanh gn ti trng uniform
Chn hng v gn gi tr ti trng uniform.
nh ngha ti trng trng hp ti th 3.
Chn loi ti trng.
Chn thanh s c gn ti trng trapezoidal(hnh thang)
Chn hng v gi tr ti trng trapezoidal
nh ngha ti trng cho trng hp ti th 4.
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LMC trn trng trong ct LoadType chn ti trng uniform
LMC trn trng trong ct List chnhin th trong vng giao din, chn ctbn tri ( thanh 1 v 2)
LMC trn trng trong ct "PX=" vnhp gi tr: (15)
LMC trn trng trong ct Casechn trng hp ti 5th SN1 t danhsch
LMC trn trng trong ct LoadType , chn nodal force nh 1 loiti trng
LMC trn trng trong ct List,chn hin th trong vng giao din
nt trn cng ca thanh cnh trn (
khng k nt gc)( nt 24to34)
LMC trn trng trong ct "FZ=" vnhp gi tr: (-25)
ng Load table
1.2 Phn tch kt cu
Tools menu / Job Preferences
Units and Formats / Other
Tng s ch s thp phn choDisplacement (chuyn v) ti 4
OK
Chn Calculations icon tthanh cng c m hnhResults menu / Diagrams for bars
Chn loi ti trng.
Chn thanh s gn ti trng uniform.
Chn hng v gi tr ti trng phn b u.
nh ngha ti trng cho trng hp ti th 5.
Chn loi ti trng.
Chn nt gn lc tp trung.
Chn hng v gi tr ti trng.
M hp thoi Job Preferences
Chn la ny cho php nh ngha s ch s thpphn sau du phy.
Tng s ch s thp phn cho chuyn v ti 4.
Chp nhn v ng hp thoi Job Preferences
Bt u tnh ton kt cu.
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1.3 Analysis Results
LMC Reactions table
T thanh cng c chn la , chn (2:LL1)
Chn My Moment trn tabNTMtrong hp thoi Diagrams
Apply
Tt la chn My Moment trong hpthoi Diagrams,Apply
Chn Displacements icon tthanh cng c m hnh kt cuLMC trn Global extremes tabtrong bngDisplacements
Hin th kt qu cho trng hp ti th 2.
Chn m men un My cho hin th.
Hin th s momen un trong thanh kt cu ( nhnnh bn v di). Trong cch tng t, s c tha ra gi tr khc t hp thoi Diagrams
M 1 bng cha chuyn v kt cu.
Hin th chuyn v ln nht v b nht t c trong ntkt cu ( nhn nh bn v di).
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LMC trn tab Values
RMC trn bng Displacements
Bng Columns
LMC trn tab General v chnCoordinates,nt OK
ng bng Displacements
Gi menu ng cnh.
Chn bng Columns v m hp thoi.
2 ct thm vo cha ta nt.
1.4 Thit k dm BTCT
CH : Tiu chun tnh ton thc hin theo EN 1992-1-1:2004 AC:2008.
RMC trn vng ha v chnSelect t menu ng cnh; chntt c dm BTCT t ca s mnhnh
Analysis menu / Design of RCStructure Elements / RC BeamDesign
Simple CasesOK
LMC ti khung nhn Beam -Section
Analysis / Calculation Options
Trn tab Concrete chn C25/30 ttrng NameTrn Longitudinal reinf. Khng
chn ng knh t 6 n 18 mmOK
Analysis / Reinforcement pattern
Chn dm thit k.
Chy modun ci cho php thit k. D liu trn dm cngvi kt qu phn tch tnh s c load ti modun ny.
Chn Simple Cases trong hp thoi Parameters of RCElements.
Chn khung nhn hin th tit din dm.
M hp thoi Calculation Options.
nh ngha kch thc BT v thp. ng hp thoiCalculation Options.
M hp thoi Reinforcement patern.
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Trn tab Shapes cho Longitudinalbars - Main thay i gi tr LeftandRight hookti 90.0OK
LMC trn hp chn layouts RSAP
programLayout: RC Beams / Beam - results
RC Beams / Beam - reinforcementLayout
Results menu / Drawings
RC Beams / Beam - Reinforcement
Results menu / Calculation NoteOK
ng cng c hiu chnh tnh ton
nh ngha kiu ct thp. ng hp thoiReinforcement patern
Mn hnh v bng xut hin kt qu c c.(s mt ct ngang lc gii hn khc nhau v s cho din tch ct tho dc chiu di dm).
CH : Thit k dm BTCT bt u 1 cch t ng.
Mn hnh v bng xut hin ct thp trong dm (nhn nhhnh v bn di).
Hin th 1 bn v ca dm u tin c thit k.
Quay li layout BEAM - REINFORCEMENT
M hp thoi Calculation Note ni ngi dng c thchn phn t tnh ton v bt u hiu chnh d liu vkt qu hin th trong dm .
1.5 Thit k ct BTCTCH : Tiu chun tnh ton c thc hin theo EN 1992-1-1:2004 AC:2008.
Chn layout START t danh sch layouts hin th
Layout Structure Model / Start ca chng trnh RSAP
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Khi trong vng hin th RMC vchn Select; chn ct trong ca sdi cng bn tri (thanh 1)
Analysis menu / Design of RCStructure Elements / RC ColumnDesign
Simple cases,OK
LMC khung Column - Section
Analysis menu / Calculation Options
Trn tab Concrete tab chn C25/30t trng NameTrn tab Longitudinal reinf khng
chn ng knh t6 n12 mmOK
Chn Start Calculations icont thanh cng c m hnh
LMC chn Results layout trong hpthoi Calculation Option SetCalculations
T danh sch t hp ti trnghin th b tr trn mt bn trica hp thoi Intersection chn thp u tin trn cng
Chn ct s c thit k
Chy modun cho php thit k ct BTCT. D liu trn ctcng vi kt qu phn tch tnh s c load ti modunny.
Chn la Simple cases trong hp thoi Parameters of RCElements.
Chn khung nhn tit din ct.
M hp thoi Calculation Options
nh ngha kch thc BT v thp. ng hp thoiCalculation Options.
Bt u tnh ton ct thp yu cu theo kch thc cchn.
Khi tnh ton hon thanh mn hnh hin th b mt catc ng tng h gia N-M, My-Mz.
Hin th tit din ct vi phn t nh du theo sau trn
n nh: trc trung ha, vng chu nn v ko cng vi hs an ton thch hp cho t hp ti trng c chn .
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Close
LMC trn trng la chn layoutRC Columns / Column -reinforcement
ng hp thoi Intersection
Hin th ct thp c c trong ct v dng bng ( nhnnh bn v bn di)
1.6 Thit k nhiu phn t BTCT
Tiu chun EN 1992-1-1:2004 AC:2008
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layout START c chn t gia nhng ci chng trnh
Structure Model / Start Layout
Analysis menu / Design of RCStructure Elements / RC MemberDesign / Calculations
a vo danh sch thanh 1to14trong trngCalculations for: ( vi la chnDesign c kch hot)
a vo danh sch cc trnghp ti (1to5) p dng cho kt cuv s dng trong sut qu trnhthit k vo trng Lists of cases
La chn Calculate cho dm ginh theo kch thc sau:in (11) points
LMC nt Calculate
ng hp thoiRC MemberCalulations: Report
ng hp thoi CalculationsAccording
to EN 1992-1-1:2004 AC:2008
Results menu / Reinforcement /RC Member Reinforcement
ng bng Results forrequiredmember reinforcement
cung cp
Hp thoi Calculations According to EN 1992-1-1:2004 AC:2008 c m.
Chn phn t s c tri qua qu trnh thit k
Chn tt c cc trng hp ti trng
Xc nh kch thc tm kim din tch ct thp l thuyt(yu cu) cho phn t kt cu c chn
Tnh ton din tch thp l thuyt (yu cu) cho phn t
kt cu c chn v v thng s theo tnh ton cbt u.
Hin th 1 ca s cha cnh bo tnh ton v li v dintch thp l thuyt ( yu cu)
M bng Results for required member reinforcementkt qu tnh ton ct thp l thuyt (yu cu) cho tit dinphn t BTCT c chn s hin th
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2. Thit k thp khung 2DTip sau l 1 v d nh ngha, phn tch v thit k 1 khung thp 2D n gin hin th nh hnh v bn
di..n v d liu: (m) v (kN).
3 loi ti trng s c gn cho kt cu (trng lng bn thn v 2 trng hp hot ti hin thtrong hnh v di). Hn na, (10) trng hp ti trng c t ng to ra cho ti tuyt/gi gn chokt cu.
CASE 2 CASE 3
Nhng nguyn tc sau y s c p dng trong sut qu trnh nh ngha kt: bt k k t biu tng no ngha l biu tng thch hp s c n vi nt chut tri ( x ) c gi tr c chn l x trong hp thoi hoc nhp gi tr x
LMC v RMC - nhng ch vit tt cho Click chut tri v Click chut phi. RSAP - vit tt cho Autodesk Robot Structural Analysis Professional.
nh ngha kt cu bt u chy chng trnh RSAP( n vo biu tng thch hp hoc chn lnh ttaskbar). Ca s ha s xut hin. ,
Chn icon u tin trong dng u tin (khung 2D) .
CH : D liu tit din Php c s dng trong v d ny. Ci t vng French regional settingstrong Preferences (Tools menu / Preferences).
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2.1 nh ngha m hnh
TIN TRNH THC HIN
Structure model / Bars Layout
LMC trong trng Bar type v chnkiu ColumnLMC trong trng Section v chnkiu HEA 300( nu tit din khnghin th trong danh sch, ngidng nn m hp thoi Newsection bng cch n nt
V chn tit din yu cu)
LMC trong trng Beginning( mu nn s chuyn mu xanh )
Ct 1:Beginning:(0,0) End:(0,5)Beginning:(0,5) End:(0,10)Beginning:(0,10) End:(0,15)Ct 2:
Beginning:(8,0) End:(8,5)Ct 3:Beginning:(16,0) End:(16,5)Beginning:(16,5) End:(16,10)Beginning:(16,10) End:(16,15)Ct 4:
Beginning:(24,0) End:(24,5)
Beginning:(24,5) End:(24,8)
LMC trong trng Bar type v chnloi Beam.LMC trong trng Section v chnloi HEA300
LMC trong trng Beginning( mu nn s thay i sang xanh)
Dm 1:Beginning:(0,5) End:(8,5)Beginning: (8,5) End:(16,5)
Beginning:(16,5) End:(24,5)dm 2:Beginning:(0,10) End:(16,10)dm 3:Beginning:(16,10) End:(24,8)dm 4:Beginning:(0,15) End:(16,15)
MIU T
Layout BARS s c chn t nhng hin th trongchng trnh RSAP
nh ngha thuc tnh ca thanh. Tit din t d liu titdin ca Php c s dng trong v d ny.
Bt u nh ngha kt cu thanh (ct ca kt cu)
Xc nh ct trong khung
Bt u nh ngha kt cu dm v xc nh thuc tnh cachng. Tit din t d liu tit din ca Php c s dngtrong v d ny.
Bt u xc nh kt cu dm
Xc nh dm trong khung
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Chn layout u ca chng trnh RSAP
LMC trong trng v chn layoutsTrong RSAP v chn
Structure model / Start Layout
Chn biu tng Zoom All tthanh cng c m hnh kt cu
Chn biu tng Supports tthanh cng c m hnh kt cu
LMC trn trng Current selectiontrong tab Nodal
Chuyn sang khung nhn hin th;khi n nt chut tri, chn tt c ntdi ca ct.
Chn biu tng ngm trong
hp thoi Supports( n s sng ln)
Apply, Close
Khung nhn u
M hp thoi Supports
Chn nt kt cu ni s gn gi
Chn cc nt 1, 5, 7 v 11 s c a vo Actualselection
Chn loi gi
Chn loi gi s c gn cho nt chn ca ktcu
2.2 nh ngha loi ti trng v ti trng
Chn Load Types icon tthanh cng c m hnh kt cu
LMC vo nt New
LMC trng Nature(Live)
LMC nt NewLMC nt New
Close
Loads menu / Load Table
n , b tr bng bn dimn hnh, thay i rng cakhung nhn v cho php m hnhkt cu c nh ngha hin th
LMC th 2 trong ct CASE, chn trng hp ti 2: LL1
M hp thoi Load Types
nh ngha 1 trng hp tnh ti (trng lng bn thn)v nhn chun DL1
Chn loi ca trng hp ti: hot ti
nh ngha 2 trng hp ti vi hot ti t nhin v nhnchun LL1 v LL2
ng hp thoi Load types
M bng nh ngha ti trng trong cc trng hp ti
nh ngha
Thu nh kch thc bng c th sp xp hin th ti trng c nh ngha
nh ngha thao tc ti trng trong trng hp ti th 2
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Tng t tip tc LMC trong ctLOAD TYPE , chn ti uniform load
LMC trn dng trong ct LIST,hin th chn la trong khungnhn ca dm 1 ( thanh10to12)
LMC trn hng trong ct "PZ="v nhp gi tr (-20)
LMC hng th 3 trong ct CASEchn trng hp 3 - LL2
LMC vo hng trong ct LOADTYPE, chn ti phn b u
LMC vo hng trong ct LIST,chn hin th dm 2 (thanh
13)
LMC hng trong ct "PZ=" vnhp gi tr (-14)
ng bng ti trng
Chn loi ti trng
La chn thanh ci c gn ti trng phn b u
Chn hng v gi tr ti trng phn b u
nh ngha ti trng trong trng hp ti th 3
Chn loi ti trng
Chn thanh s c gn ti phn b u
Chn hng v gi tr ti trng phn b u
2.3 nh ngha ti trng tuyt/gi
Tiu chun Php: NV65 Mod99+Carte 96 04/00Loads menu / Special loads / Windand Snow 2D/3D
n nt Auto;
Khng la chn:without parapetswith base not on groundisolated roofs
Xc nh cc kch thc sau:Total depth = (60)Bay spacing= (10)La chn:windsnow
n nt Parameters
Xc nh thng s ti trng tuyt/gi:Global parameters tab:khu hnh chnh: Alpes-Maritimesaltitude above the sea level: (200)structure height: (15) mreference level: (0.8) mrise of roof: automatic
M hp thoi Snow and Wind 2D/3D
T ng to ng bao cho ti trng kt cu (trong trngEnvelope chng trnh a ra s nt sau: 1, 2, 3, 4, 10, 9,13, 12, 11) v xc nh thng s c bn cho ng bao ktcu
Xc nh cc thng s c bn cho ti trng gi/tuyt
M hp thoi b sung (Snow/Wind Loads 2D/3D), ningi dng c th nh ngha thng s chi tit
Xc nh thng s tng th
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Windtab:Site: NormalType: NormalWind pressure: automaticStructure dimension effect:automaticKo la chn trong nhmSpecific actions
Snowtab:Snow pressure: automatic chonormal and extreme
La chn: Snow redistribution
Generate
ng hp thoi ch tnh ton
ng hp thoi Snow and Wind
2D/3D
2.4 Phn tch kt cu
Chn Calculations icon tthanh cng c chun
2.5 Phn tch chi tit
Chn dm 1 trong mn hnh hinth ( thanh 10,11,12)
LMC chn layout RSAP :
Results / Detailed Analysis Layout
Chn trng hp ti th 2
Trong hp thoi Detailed Analysischn Open a new windowb tr gc di cng bn tri,Trn tab NTM chn MY
Moments
Xc nh cc thng s ti trng tuyt/gi
Xc nh thng s cho ti trng tuyt
n nt kt qu s bt u c to cho ti trng tuytv gi vi thng s c chp nhn . Ch tnh ton sxut hin trn mn hnh. N s hin th thng s trnghp ti tuyt/gi
Tnh ton kt cu bt u. Khi tnh ton xong, thanh trncng ca chng trnh RSAPs hin th tin nhn: Results(FEM) : available.
Phn tch chi tit thanh kt cu c bt u. Mn hnhquan st c chia thnh 2 phn: mn hnh hin th mhnh kt cu v hp thoi DetailedAnalysis
Chn hin th cho dm c chn la
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Apply
Trong hp thoi Detailed analysischn theo la chn sau:
Chn ng sut ln nht Smax trntab StressesChn im c trng trn tab
Division points
LMC vo Refresh
Apply
Chn tab Global extremes trong bng
Exit
2.6 Phn tch ton b
LMC chn RSAP programlayout:Structure Model / Start Layout
1 khung hin th b sung xut hin trn mn hnh.N cha 2 phn: 1 mn hnh hin th thng tin (s , titrng, tit din thanh) cho thanh c chn v bng hin thkt qu dng s c c trn thanh chn
Chn khi lng hin th cho dm chn
Thm khi lng hin th mi cho dm chn
Kch hot hin th im cc tr c c trn dm chn(nh hnh di)
ng khung nhn hin th phn tch chi tit ca dm chn
Chn layout u tin trong RSAPlayout.
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Results menu / Global Analysis -Bars
RMC khi con tr ang trong khungnhn.
Table Columns
Trn tab Stresses ko chn tt chp chn.
Design tab: La chn Ratio
LMC nt OK
LMC vo Upper limit trong bng vnhp gi tr 1.0
RMC khi con tr chut ang trongkhung nhn ha
Chn la Constant display of limitvalues
Close
2.7 Thit k thp
Tiu chun CM66
Bt u phn tch ton b tt c thanh trong kt cu.1 khung nhn xut hin. N gm 2 phn: mn hnhhin th thng tin v bng hin th kt qu dng s.
1 menu ng cnh xut hin
Chn la 1 la chn trong menu ng cnh m hpthoi Parameters of presentation windows
Trn khi lng phn tch ton b s hin th
Chp nhn chn la
Gi tr cao nht ca h s c xc nh
1 menu ng cnh xut hin trn mn hnh ha
Gi tr gii hn c hin th vi ng thng nm ngangtrong khung nhn ha ca phn tch tng th(nh di)
ng khung nhn hin th phn tch tng th
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Thit k thnh phn kt cu thp c bt u.
LMC chn layout RSAP program:Structure design / Steel/Aluminumdesign LayoutLMC nt New trn tab Groupstrong hp thoi Definitions
Xc nh nhm u tin vi kchthc nh sau:Number: 1Name: columnsMember list: 1to9Material: ACIER Defaut
Save
LMC nt New trn tab Groups tabtrong hp thoi Definitions
Xc nh nhm th 2 theo thng
s nh sau:Number: 2Name: beamsMember list: 10to15Material: ACIER Defaut
Save
LMC nt List trong Codegroup design trong hp thoiCalculations
LMC nt All (trong trng trnnt Previous, ni s xut hin danh
sch: 1to2), Close
LMC nt List trong nhm Loads(hp thoi Calculations)
LMC trong trng trn ntPrevious; xc nh danh sch: 1to3,Close
Kch hot la chn: Optimizationch gii hn: UltimateKo la chn: Save calculation resultsLMC nt Calculations
Mn hnh iu khin c chia thnh 3 phn: khung nhnhin th, hp thoi Definitions v hp thoi Calculations
nh ngha cc nhm phn th c bt u
nh ngha nhm u tin cha tt c cc ct trong ktcu
Lu thng s nhm u tin
nh ngha nhm th 2
nh ngha nhm th 2 cha tt c dm trong kt cu
Lu thng s ca nhm th 2
Ti hp thoi Calculations v m hp thoi CodeGroup Selection
Chn cc thnh phn nhm c gn
M hp thoi Load Case Selection
Chn 3 trng hp ti (DL1, LL1, and LL2)
Thit k nhm s c s dng 1 cch ti u ( tit dinthch hp s c ch ti trng lng ca chng); ch gii hn ti a s c kim tra
Thit k nhm phn t chn c bt u; xut
hin hp thoi CM66 - Code Group Design trn mn hnh
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LMC nt Change all trong hpthoi Code Group Design biudin nh trn; chp nhn cnh bov c th thay i tnh trng kt quti ko hin th not available
Close
Chn Calculations icon tthanh cng c m hnh
LMC nt Calculations trong hpthoi Calculations
LMC nt Change all trong hpthoi Code group design ; chpnhn cnh bo v c th thay itnh trng kt qu thnh not
available
Close
Chn Calculations icon tthanh cng c chun
LMC the Calculations button in theCalculationsdialog box
Thay i hnh dng hin hnh s dng trong phn tthuc c 2 nhm ti tnh ton tit din (cho ct: t HEA300 thnh HEA 240, cho dm: t HEA 300 thnh HEA450). Khi tit din c thay i, thanh trn cng cachng trnh RSAP s hin th tin nhn: Results (FEM) :out of date.
ng hp thoi Code Group Design
Tnh ton li kt cu vi phn t thay i tit din .Khi tit din thay i, thanh trn cng caRSAP s hin th tin nhn: Results (FEM) :available.
Thit k li cc nhm phn t chn trong kt cu (1,2)vi kch hot la chn ti u; Ni s xut hin khung nhnShort results
Thay i hnh dng tit din hin hnh s dng trongphn t thuc c 2 nhm ti tnh ton tit din. Khi titdin thay i, thanh trn cng ca
RSAP s hin th tin nhn sau: Results (FEM) :out of date.
ng hp thoi Code Group Design
Tnh ton li kt cu vi phn t thay i tit din. Khitit din thay i, thanh trn cng caRSAP s hin th tin nhn: Results (FEM) :available.
Thit k li cc nhm phn t chn trong kt cu (1,2)vi kch hot la chn ti u; Ni s xut hin khung nhnShort results di. Khi tit din ko thay i trong sut qutrnh thit k nhm c th ni rng tnh ton tit din l
tit din ti u cho thit k phn t nhm. Bn phi lp litin trnh thit k li n khi bn s nhn thy kt qu bndi.
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Close
LMC trong trng Memberverification trong hp thoiCalculations v nhp : (1to15)
LMC trn trng Load case listtrong hp thoi Calculations v
nhp y: (1to3)
LMC nt Calculations
Close
2.8 Thnh phn bn in
File Menu / Printout Composition
LMC tab Simplified printout
ng hp thoi Code Group Design
Chn phn t kim tra
Chn tt c cc trng hp ti
Kim tra phn t kt cu chn c bt u (kimtra c tin hnh n khi kt qu thu c cho tngphn t kt cu ring bit; tuy nhin iu ny ko cnthit); C xut hin 1 khung nhn Short results
ng hp thoi Member Verification
M hp thoi Printout Composition - Wizard, ni c thnh ngha dng bn in cho kt cu thit k hin thi
Ti tab Simplified printout
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Tt la chn ( k t Ko xuthin):Quantity survey,Combinations
Chn d liu t danh sch hinth nh sau:Reactions - global extremesDisplacements - envelopeForces - valuesStresses - envelope
LMC nt Save template
LMC tab Standard
Hin sng la chn trong bng tri:
Member Group Design
LMC nt AddLMC nt Preview
Close
Close
D liu v khi lng kim tra v t hp ti trng s khngc trong bn in
Chn d liu hin th cho kt qu tnh ton kt cu
n nt kt qu trong tab Templates trong hp thoiPrintout composition - Wizard v bao gm bn inphn t rt gn chn trong bng bn phi
Ti tab Standard
Chn phn t cu thnh nn bn in
Going to the selected option in the right panel
Trnh by xem trc in n bn in nh ngha cho kt cuthit k
ng khung xem trc khi in
ng hp thoi Printout Composition - Wizard
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3. Phn tch n hi-doV d ny trnh by cch nh ngha, phn tch v thit kt 1 khung thp 2D n gin nhn nh hnh
di. Tin trnh nh ngha gm ng dng to gin bng th vin kt cu in hnh hin th trongchng trnh Autodesk Robot Structural Analysis Professional. M hnh xt n iu kin tiuchun Chu u (EuroCode) vi ch ti khim khuyt hnh hc v phn tch vt liu n hi- do .n v d liu: (m) and (kN).
Nhng nguyn tc sau y s c p dng trong sut qu trnh nh ngha kt: bt k k t biu tng no ngha l biu tng thch hp s c n vi nt chut tri ( x ) c gi tr c chn l x trong hp thoi hoc nhp gi tr x LMC v RMC - nhng ch vit tt cho Click chut tri v Click chut phi. RSAP - vit tt cho Autodesk Robot Structural Analysis Professional.
bt u nh ngha kt cu chy chng trnh RSAP( n icon thch hp hoc chn lnh t
taskbar). Trong nh hin ra trn mn hnh chn icon u tin (Frame 2D Design) s c chn.
3.1 nh ngha m hnh
3.1.1 Chn tiu chun
Tin trnh thc hin Miu t
Tools menu / Job Preferences M hp thoi Job Preferences
Materials
Chn t Materials di danh sch:Eurocode
Design codes
Steel / Aluminum structures:(EN 1993-1:2005)
Loads
Chn Materials t cy la chn trong hp thoi
Chn d liu vt liu tiu chun Chu u
Chn tiu chun thit k t cy trong hp thoi
Chn tiu chun Chu u cho thit k kt cu thp
Chn Loads t cy hp thoi
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Code combinations:EN 1990:2002Chp nhn cnh bo v thay i
tiu chun
OKChp nhn cnh bo v tiu
chun thay i
Chn tiu chun Chu u cho t ng t hp ti tng tiu
chun
Chp nhn cc thng s theo sau v ng hp thoi Jobpreferences
Chp nhn cnh bo tiu chun thay i
3.1.2 Structural Axis Definition
Geometry menu / Axis definition
On the X tab:Position: {0}Number of Repetitions: {2}Distance: {6}
Numbering: 1, 2, 3 ...LMC nt Insert
LMC tab Z
Trn tab Z:Position: {0.0}
Numbering: A, B, C ...
LMC nt Insert
Position: {3.6}, Insert
Position: {6.0}, Insert
Position: {7.2}, Insert
Apply, Close
Bt u nh ngha h trc kt cu. Hp thoiStructural Axis hin th trn mn hnh
Xc nh thng s trc ng kt cu
Trc ng c xc nh v nhp vo trng Definedaxes
Bt u xc nh thng s ca trc ngang kt cu
Xc nh thng s trc ngang kt cu
Trc ngang u tin c xc nh v nhp vo trngDefined axes
Cc trc cn li c xc nh v nhp vo trngDefined axes
H trc kt cu c to ra v ng hp thoi StructuralAxis. H trc kt cu hin th trong hnh bn di cxut hin trn mn hnh.
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3.1.3 nh ngha phn t
Geometry / Properties / Sections
Chn New section definitionicon.
Chn I-section family,trong trng Section chn titdin IPE 240, AddHEA 300, AddHEA 240, Add
Close (hp thoi New Section)Close (hp thoi Sections )
Chn Bars icon t thanhcng c m hnh kt cu
LMC trong trng Bar type vchn loi: Column
LMC trng Beginning( mu nns thay i sang xanh)
Ch vo mn hnh hin th hoc gim u v cui ca thanh(0,0) (0,6), Add(12,0) (12,6), Add
M hp thoi Sections
M hp thoi New Section
Xc nh cc tit din sau: IPE 240, HEA 240 and HEA300
ng hp thoi Sections v New Section
M hp thoi Bars
Chn thuc tnh ca thanh thit k. Trng Section shin th tit din nh ngha gn y HEA 240
Bt u xc nh thanh trong kt cu (ct kt cu)
Xc nh v tr ca thanh trn ng kt cu to vi s 1v 3 (trong khong A-C)
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LMC trong trng Section v chntit din HEA 300
LMC trong trng Beginning(mu nn ca trng thay ithnh xanh)
Ch vo mn hnh hin th hoc g
im u v cui ca thanh(6,0) (6,3.6), Add
LMC trong trng Bar type v chnloi: Beam
LMC trong trng Section vchn tit din IPE 240
LMC trong trng Beginning(mu trng thay i thnh xanh)
Ch vo mn hnh hin th hoc gim u v cui ca thanh
(6.0,3.6) (12.0,3.6), Add
Close
View menu / Display
tab Bars, bt la chn Section -shapeApply
Chn HEA 300nh tit din hin hnh
Bt u xc nh thanh trong kt cu (ct gia)
Xc nh v tr ca thanh trn ng kt cu to vi s 2(trong khong A-C)
Chn thuc tnh ca thanh thit k
Chn IPE 240 nh tit din hin hnh
Bt u xc nh thnah trong kt cu (1 dm gia ccct)
Xc nh v tr ca thanh trn ng kt cu to t B ( trongkhong 2-3)
ng hp thoi Bars
M hp thoi Display
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3.1.4 nh ngha th vin kt cu
tab Nodes, bt la chn Nodenumberstab Structure, tt la chnStructural axisApply, OK
Chn Library Structure icon tthanh cng c m hnh kt cu
LMC (2 ln) biu tng(biu tng u tin hng cui)
Trn tab DimensionsLMC trong trngLength L {12}
LMC trng Height H{1.2}
LMC la chn:Moments Released: No
LMC trn tab Sections ;Tt c thanh cnh (trn v di)gn (DCED 90x10) vthanh xin,ng gn (CAE 70x7)
LMC tab Insert
LMC trng Insertion point
Chn nt th 2 trong khung nhn cah ta (0, 0, 6)
Apply
OK
M hp thoi Typical Structures v bt u nhngha th vin kt cu
Chn gin tam gic ca loi 1. Hp thoi Merge Structurehin th trn mn hnh trong thng s gin c thc xc nh
Xc nh di gin (n cng c th xc nh t mn hnhtrong khung nhn hin th)
Xc nh chiu cao gin (n cng c th xc nh t mnhnh trong khung nhn hin th)
Gn tit din cc thanh gin
Xc nh im bt u ca gin
Xem nh d liu c nhp vo, c th hiu chnh d liu
To xong gin v ng hp thoi Merge Structure . Ktcu c nh ngha hin th nh hnh di
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3.1.5 Thm nt ph tr
Edit menu / Divide
Trong trng DivisionLMC in distance
Trong trng Distance from thetop nhp gi tr 3.6 (m)
Chuyn sang khung nhn v chchut tri, click ln ct tri tichn ct (thanh 1)
Close
M hp thoi Division
Chn cch xc nh im chia c chn vo qua ta trn di thanh
nh im chn ni nt ph c chn vo
Ch ln thanh chia. Ch : nu khong chia xc nh quata trn di thanh, ch rng ta c tnh tont im bt u thanh khi ch chut
ng hp thoi Division
3.1.6 nh ngha gi thanh
Geometry menu / Additional
Attributes / Brackets
LMC trn trng vi danh sch nhngha thuc tnh, chn gi tr mcnhBracket_ 0.1x1
Di chuyn sang khung hin th; chvo im bt u v cui ca dm(s 4)
Close
M hp thoi Brackets
Selects the bracket type (it will be highlighted)
Xc nh gi trn im u v cui ca dm
ng hp thoi Brackets
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3.1.7 nh ngha gi
Chn Supports icon t thanhcng c m hnh kt cu
Trong hp thoi Supports chngi Fixed (ngm)
Chuyn sang khung hin th vchn nt 1 (nt di cng ct bin)
Trong hp thoi Supports chngi Pinned(gi ta)
Chuyn sang khung hin th chnnt 3 v 5 (nt di ca cc ctcn li)
Close
M hp thoi Supports
Chn loi gi l ngm ( n s hin sng)
Gn gi ti nt 1.
Chn loi gi l gi ta ( n s hin sng)
Gn gi ti nt 3 v 5
ng hp thoi Supports
3.1.8 nh ngha khuyt tt hnh hc
Geometry menu / AdditionalAttributes / GeometricalImperfections
Chn Definition of a new type
of geometrical imperfection icon.
Trong trng Label gDuring_AssemblyTt la chnAutomaticBt la chn User-definedBt la chn AbsoluteNhp gi tr 5 (cm)
Add, Close
LMC trong trng vi danh schnh ngha thuc tnh, chn loi
khuyt tt mc nh (Automatic)
Chuyn sang khung nhn, chnthanh s 1 (ct tri)
LMC trong trng vi danh schnh ngha thuc tnh, chn loikhuyt tt nh nghaDuring_Assembly
Chuyn sang khung hin th; chnthanh di ca gin (thanh s 5)
M hp thoi Geometrical Imperfections
M hp thoi Imperfection definition
Xc nh thng s ca loi khuyt tt mi vi gi trvng lch bng 5cm
Xc nh khuyt tt v ng hp thoi Imperfectiondefinition
Chn loi khuyt tt ( n s hin sng)
Xc nh khuyt tt (khuyt tt t ng theo EC3) cho ct
Chn loi khuyt tt ( n s hin sng)
Xc nh khuyt tt (nh ngha bi ngi dng) chothanh di ca gin
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Close ng hp thoi Geometrical Imperfections
3.1.9 nh ngha cc trng hp ti
Di thanh trng thi
Loads menu / Load Types
LMC nt New
LMC trng Nature : Live (Live 1)
LMC nt New
LMC nt Close
Phc hi ci t hin th mc nh
M hp thoi Load Types
inh ngha trng hp ti t nhin: tnh ti v tn chunDL1
Chn trng hp ti: live
nh ngha trng hp ti t nhin: hot ti vi tnchun LL1
ng hp thoi Load Types
3.1.10 nh ngha ti trng cho cc trng hp ti
Chn ti trng s. 1 - ti trng bn thn DL1.
Chn 1: DL1
Loads menu / Load Definition
Chn tab Bar
Values:pZ: {-3} (kN/m),Add
LMC trng Apply to - nhpthanh bao ngoi :1 2 6 7
Apply
Chn 2: LL1
Chn tab Node
Load parameters,X: {10} (kN)Z: {-100} (kN)
LMC nt Add trong phn di cahp thoi
M hp thoi Load Definition .
Chn Uniform load.
nh ngha gi tr ti trng phn b u trn thanh
Xc nh ti trng phn b u trn thanh c ch nh-n m hnh trng lng tng v mi lp
Xc nh ti trng p dng cho danh sch cc thanh
Chn trng hp hot ti LL1.
Chn loi ti Nodal Force
Xc nh gi tr ti trng ti nt.
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Chuyn sang khung nhn hin th kt Xc nh nt ti trng ni m hnh ti trng cu trc di chuynCu v ch chut chn bn trn.(LMC) nt. 6 v 18
Close ng hp thoi Load Definition
3.1.11 Ti trng to bi tuyt/gi
Loads menu / Special loads / Windand Snow 2D/3D
n nt AutoTrong Total depth : 30,Trong Bay spacing : 6 (m)
n nt Parameters
Generate, OK
ng hp thoi ch tnh ton
Close
M hp thoi Snow and Wind 2D/3D
T ng to ng bao bn ngoi kt cu cho ti trng tobi gi/tuyt
M hp thoi thm vo (Snow/Wind Loads 2D/3D) trong thng s chi tit c xc nh. Thng s mc inh sc chp nhn .
n nt ny bt u to ti trng do tuyt/gi vi thngs mc nh. Trn mn hnh ch tnh ton s hin ththng s gi tr cc trng hp ti tuyt v gi
Trng hp ti mi c to ra (ti trng gi v tuyt)
ng hp thoi Snow and Wind 2D/3D
3.1.12 To t ng tiu chun t hp ti trng
Loads menu / AutomaticCombinations
Chn Full automatic combinations
More >Trn tab Combinations tt la
chnACC v FEU
Generate
M hp thoi Load Case Code Combinations theoEN 1990:2002.
Chn la chn ny v click OK to t hp y sau khitnh ton tnh kt cu .
ng hp thoi tiu chun t hp ti trng v nh nghat hp ti trng .
3.2 Phn tch kt cu v kim tra kt qu
Analysis menu / Calculations Chy tnh ton.
Results menu / Stresses M bng ng sut thanh.
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LMC tab Global extremes btr di din tch bng.
LMC trong gc bng trn cng
File menu / Save
Nhp tn cho file , v d.
Frame_EC3
LMC nt Save
3.3 Phn tch n hi-do
Calculates maximal stresses in bars.
ng bng.
M hp thoi lu.
Lu nh dng mc inh: RTD.
Lu v d.
Trong phn b sung, phn tch s va p ngu nhin vi ct xng bi cu trc di chuyn bn trn.
Trong trng hp ny, phn tch trong gii hn n hi s c xem xt.
3.3.1 Thay i nh ngha cc trng hp ti trng
Loads menu / Load Types
LMC nt Delete all
LMC nt New
Close
Loads menu / Load Definition
Load parameters,X: {120} (kN)Z: {0}
LMC nt Add di bng hp thoi
Chuyn sang khung hin th kt cuv (LMC) chn nt s 18
Close
M hp thoi Load Types
Xa tt c cc trng hp ti
nh ngha trng hp ti vi ti t nhin mc nhv tn chun DL1
ng hp thoi Load Types
M hp thoi Load Definition .
Chn loi ti Nodal Force .
Xc nh gi tr ti trng ti nt.
Xc nh ti trng nt n m hnh ti trng ngu
nhin kt qu t s chuyn ng ca cu trc bn trn.
ng hp thoi Load Definition .
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3.3.2 Phn tch kt cu
Analysis menu / Calculations
nh v con tr chut vo ct bin(thanh 1) n s hin sng,RMC
Object Properties
Chn tab Code check
Close
Chy tnh ton
M menu ng cnh trong khung nhn kt cu.
Kch hot la chn Bar properties cha thng tin v thanhs .1.
Thc hin thit k n gin thanh thp. Nh bn thy, nkhng tha mn iu kim kim tra theo tiu chun .
ng hp thoi Bar properties .
3.3.3 Thay i tit din thanh cho phn tch n hi-do
Chn Bar Sections icon tthanh cng c m hnh kt cu.
LMC vo HEA 240 trn danh sch
Chn New section definitionicon.
LMC du tch cnh nt Elasto-plastic analysis
Add,Close
Chuyn sang khung nhn hin th ktcu v chn (LMC) cc ct bin(thanh s. 1, 2)
Trong hp thoi Sections LMCvo IPE 240 trong dnh sch
Chn New section definitionicon.
LMC du tch cnh nt Elasto-
plastic analysis
Add,Close
Chuyn sang khung nhn hin th ktcu v chn (LMC) dm (thanh s. 4)
Close trong hp thoi Sections
M hp thoi Sections
Chn tit din hin dng
M hp thoi New Section vi tit din HEA 240 cchn
Bt phn tch n hi-do cho tit din c chn. 1 titdin mi vi tn c gn: HEA 240EP
nh ngha tit din HEA 240EP, ng hp thoi NewSection .
Thay i tit din thanh c ch nh thnh tit dinHEA 240EP .Chp nhn cnh bo v thay i c th a kt qusang trng thi not available.Chn tit din hin dng
M hp thoi New Section vi tit din IPE 240 cchn
Bt phn tch n hi-do cho tit din c chn. 1 tit
din mi vi tn c gn: IPE 240EP
nh ngha tit din IPE 240EP, ng hp thoi NewSection .
Thay i tit din thanh c ch nh thnh tit din IPE240EP .
ng hp thoi Sections .
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3.3.4 Phn tch kt cu v kim tra kt qu
Analysis menu / Calculations
Results menu / Displacements
LMC tab Global Extremes
File menu / Save as
Trong File name nhp tn cho vd e.g.
Frame_EC3_EP
LMC nt Save button
Chy tnh ton.
M bng chuyn v nt.
Tnh ton chuyn v ln nht ti nt (nhn nh hnh di).
Nh bn nhn thy, mc d lm vic giai on do nhngkt cu vn n nh .
M hp thoi lu.
Lu vi dng mc nh - RTD.
Lu v d.
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4. Ti trng di chuyn khung 2DV d ny gii thiu cch nh ngha, phn tch v thit k 1 khung 2D n gin (nhn nh hnh bn
di), vi 1 ti trng di chuyn c nh ngha.n v: (m) v (kN).
3 trng hp ti trng s c gn cho kt cu (trng lng bn thn v 2 trng hp ti: gi vtuyt, biu din nh hnh di). Thm na,1 ti trng di chuyn s c gn cho kt cu
LOAD CASE 2 LOAD CASE 3
MOVING LOAD CASE
Nhng nguyn tc sau y s c p dng trong sut qu trnh nh ngha kt: bt k k t biu tng no ngha l biu tng thch hp s c n vi nt chut tri ( x ) c gi tr c chn l x trong hp thoi hoc nhp gi tr x LMC v RMC - nhng ch vit tt cho Click chut tri v Click chut phi. RSAP - vit tt cho Autodesk Robot Structural Analysis Professional.
Trong th t bt u nh ngha kt cu, nn chy chng trnh RSAP (n biu tng thch hphoc chn dng lnh thch hp t toolbar). Sau , s xut hin trn mn hnh 1 hp thoi, chnbiu tng u tin hng u tin (2D frame).
CH : D liu tit din Chu u (French) (CATPRO) c s dng trong v d ny.
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4.1 nh ngha m hnh
TIN TRNH THC HIN
Chn Axis Definition t thanhcng c m hnh kt cu.
Trong tab X:Position: {0}Number of repetitions: {4}Distance: {3}
Numbering: A, B, C ...
LMC nt Insert
LMC trong tab Z
Trong tab Z :Nhp lin tip cc ta sau:
{0}, Insert{3}, Insert{5}, Insert{6.5}, Insert
Numbering: 1, 2, 3 ...
Apply, Close
MIU T
Bt u nh ngha h trc kt cu. hp thoi Structuralaxis xut hin trn mn hnh.
Xc nh thng s trc ng kt cu.
Trc ng c xc nh v a vo trng Set of definedaxes .
Bt u nh ngha thng s trc ngang kt cu.
Xc nh thng s trc ngang kt cu.
To xong h trc kt cu v ng hp thoi Structural axis.
4.1.1 Member Definition
Chn Bar Selections icon tthanh cng c
Chn New SelectionDefinition icon
Chn nhm I-section trong trngSection v chn theo nhng tit dinsau: HEA 200, HEA 260 vIPE 200
Add, Close
Close
Chn Bars icon t thanhcng c m hnh
LMC trong trng BAR TYPE:Column LMC trong SECTIONv chn loi tit din: HEA 260
M hp thoi Sections
M hp thoi New sections
nh ngha tit din mi v ng hp thoi New sections
ng hp thoi Sections
M hp thoi Bars
Chn thuc tnh thanh
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LMC trong trng Beginning (muca nn thay i sang xanh)
Ct 1 - gia li A1-A3, vi ta nh sau:Beginning: (0,0)End: (0,5)
Ct 2 - gia li E1-E3, vi ta nh sau: Beginning: (12,0)End: (12,5)
Ct 3 - gia li C1-C2, vi ta nh sau:Beginning: (6,0)End: (6,3)
Close
Bt u xc nh thanh kt cu ( cc ct kt cu)
Xc nh ct kt cu. Hnh di th hin kt cu cto n thi im ny .
ng hp thoi Bars
4.1.2 nh ngha th vin kt cu (1 mi v 1 dm cu trc di chuyn trn)
Chn Library Structure icon tthanh cng c m hnh
LMC ( p) biu tng( th 1 hng di)
Trong tab DimensionsLMC trong trngLength L {12}
LMC trong trngHeight H {1.5}
M hp thoi Typical structures v bt u nhngha th vin kt cu (mi).
Selects the triangular truss of type 1. On screen, thereappears the Merge structuredialog box where one maydefine truss parameters
Xc nh chiu di gin (c th xc nh trong khung nhnhin th)
Xc nh chiu cao gin (c th xc nh trong khung nhnhin th)
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LMC trong trng Number offields {8}
LMC trn tab Sections ;Tt c thanh bin ( trn v di)gn (DCED 90x10) vthanh xin,ng gn (CAE 70x7)
LMC trong tab Insert
LMC trong trng Insertion pointchn im A3 vi ta nh sau:
(0,0,5)
Apply, OK
Geometry menu / Releases
LMC trn loi gii phng lin kt:Pinned-Fixed
LMC trn trng Current selection,chuyn sang khung nhn v chchn thanh ng cao nht gin(trong nh mi) bng cch di contr chut trn phn t.
Close
Chn Library Structure icon tthanh cng c m hnh.( icon th 3 trong hng 2)
LMC ( p) vo icon
Trn tab DimensionsLMC trng Length L{12}
LMC trng Height H{1.0}
LMC trong trng Number offields {8}
LMC trn tab Sections ;Tt c thanh bin ( trn v di)gn (DCED 90x10) vthanh xin,ng gn (CAE 70x7)
LMC trong tab Insert
LMC trong trng Insertion point vchn im theo ta sau (0,0,2)
Xc nh s khong chia m gin c chia thnh
Gn tit din cho thanh gin.
Xc nh v tr im chn kt cu
To kt cu v tr thch hp bn trong khung kt cu vng hp thoi Merge structure
M hp thoi Releases
Chn loi gii phng lin kt gn cho thanh gin
Chn thanh gin; Ch : lu mi tn ci xut hin sngtrn thanh gin- khi a chut ln thanh, mi tn phi chng ln (hng ca lin kt gii phng rt quan trng: tiin nt u l lin kt khp, cn li im th 2 lin kt ngmc gn)
ng hp thoi Releases
M li hp thoi Typical structures v bt u nhngha t th vin kt cu ( di chuyn- dm cu trc).
Chn gin ch nht loi 3. Trn mn hnh, xut hin hpthoi Merge structure ni c th xc nh cc thng scho dn
Xc nh chiu di gin (c th xc nh trong khung nhnhin th)
Xc nh chiu cao gin (c th xc nh trong khung nhnhin th)
Xc nh s khong chia gin
Gn tit din thanh gin
Xc nh im chn kt cu gin
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Apply, OK
Chn thanh ng bn ca cn trcgin di chuyn v thanh ng gia(nh hnh) thanh s hin sng(thanh 108, 112 v 116)
n nt Delete trn bn phmChn No, delete only the selectedbars v n nt Apply
To kt cu v tr thch hp bn trong khung kt cu vng hp thoi Merge structure
Xa nhng thanh c chn
4.1.3 nh ngha gi
Chn Supports icon t thanhcng c m hnh
LMC trong trng Current selectiontrn tab Nodal
Sang khung nhn; khi di chut tri vn, chn ca s tt c cc nt dica ct (cc im nm cao trnhtrc 1)
Trong hp thoi Supports , chnbiu tng gi ngm (n s hinsng)
Apply
Close
M hp thoi Supports
Chn nt kt cu s c gn gi
Chn nt (1 3 5) s c chn trong trng Currentselection .
Chn loi gi
Gi c chn s c gn cho nt kt cu.
ng hp thoi Supports
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4.1.4 nh ngha ti trng kt cu
Chn RSAP layout ci cho php ngi dng nh ngha cctrng hp ti
LMC trong RSAPlayout chn
Structure model / Loads Layout
LMC nt New trong hp thoiLoadtypes
LMC trong Nature :Wind
LMC nt New
LMC trong NatureSnow
LMC nt New
LMC trng 2 trong ct CASEv chn trng hp ti 2ndWIND1
LMC trng trong ct LOADTYPE v chn ti trng phn b u
LMC trng trong ct LIST v chnsang khung hin th kt cu ct tri
LMC trng trong ct "PX=" v ggi tr 5.0
LMC trng 3 trong ct CASE vchn trng hp ti th 3: SN1
LMC trng trong ct LOADTYPE v chn ti trng phn bu
LMC trng trong ct LIST v chnsang khung nhn hin th thanh bintrn ca gin mi
LMC trng trong ct "PZ=" vnhp gi tr: -3.0
trong RSAPlayout chnStructure Model / Start Layout
nh ngha theo trng hp ti:nature: dead (self-weight)standard name: DL1
Chn trng hp ti: wind
nh ngha theo trng hp ti:nature: wind
standard name: WIND1
Chn trng hp ti: snow
nh ngha theo trng hp ti:nature: snowstandard name: SN1
Trng lng bn thn t ng c gn cho ton bthanh kt cu hng u tin (hng "-Z)
nh ngha ti trng cho trng hp ti th 2
Chn loi ti trng
Chn thanh s c gn ti trng lc ti nt (thanh 1)
Chn hng v gi tr ti trng
nh ngha ti trng cho trng hp ti th 3
Chn loi ti trng
Chn thanh s c gn ti trng phn b u (thanh s 5v 6)
Chn hng v gi tr ti trng phn b u
Chy layout u tin ca RSAP
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4.1.5 nh ngha ti trng di chuyn v p dng cho kt cu
Tools menu / Job Preferences
LMC la chn Databases / Vehicleloads
Chn Create a newdatabase icon.
G:Trong Database : USERTrong Database name :User-defined databaseUnits: length - (m)
force - (kN)
Create
OK
Loads menu / Special loads / Moving
Chn New vehicle icon.
LMC nt New
G tn ln: Moving crane,OK
LMC dng u tin trong bng b trphn thp ca hp thoi
Chn loi ti trng: lc tp trung
(concentrated force)
F = 30, X = -1.2, S = 0
LMC ng tip theo trong bng tiphn di ca hp thoi
Chn loi ti trng: lc tp trung(concentrated force)
F = 30, X = 0.0, S = 0
LMC ng tip theo trong bng tidi na ca hp thoi
Chn loi ti trng: lc tp trung(concentrated force)
F = 30, X = 1.4, S = 0
M hp thoi Job Preferences
Chn la t cy th mc bn tri ca hp thoi
n Create a new database icon m hp thoi New MovingLoad
nh ngha d liu ngi dng
ng hp thoi New Moving Load
ng hp thoi Job Preferences
M hp thoi Moving Loads
M hp thoi Moving Loads v bt u xc nh 1 lnxe miXc nh ln xe mi
Xc nh tn ln mi v ng hp thoi Newvehicle
Xc nh lc tc ng
Chn loi ti trng
Xc nh gi tr v v tr lc tp trung
Xc nh lc tc ng
Chn loi ti trng
Xc nh gi tr v v tr lc tp trung
Xc nh lc tc ng
Chn loi ti trng
Xc nh gi tr v v tr lc tp trung. Hp thoi
Moving Loads hin th nh hnh di.
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LMC nt Save to database
Chn USER database v OKtrong hp thoi Moving LoadDatabases
Add, Close
Trong trng Name , g tn cati trng di chuyn (case 4):
moving crane load
LMC nt Define
Xc nh 2 im nh tuyn ca ln:beginning (0,3)end (12,3)
Apply, Close
LMC trng Step {1}Gi nh gi tr mc nh ca hng(0,0,-1), ngha l ti trng tc dng
theo phng Z v hng ngcvi trc Z
LMC la chn Selection ti trngApplication plane
{8}
LMC nt Parameters
M hp thoi Moving Load Databases
Lu ln nh ngha ti d liu ngi dng nh ngha
Thm ln nh ngha ti danh sch ln hot ng vng hp thoi Moving Loads
Xc nh tn ca ti trng di chuyn
Bt u nh ngha tuyn ca ln cu trc di chuyn:hp thoi Polyline - Contour c m, vi la chnPolyline kch hot.
Xc nh cc tuyn ln
ng hp thoi Polyline - contour
Xc nh cc bc thay i v tr ti trng di chuyn v hngca ti trng p dng .
Chn mt phng ti trng tc dng
Chn thanh bin trn ca gin cu trc di chuyn (thanh s 8)
M hp thoi Route Parameters
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LMC trng cho h s:Coef. LR and coef. LLv g gi tr 0.1
Bt la chn sau:Vehicle position limit - routebeginningVehicle position limit - route end
OK
Apply, Close
4.2 Phn tch kt cu
Tools menu / Job Preferences
Structure Analysis
Method of Solving the System ofEquations: Iterative
OK
Chn Calculations icon tthanh cng c chun
Xc nh h s cho lc tc dng dc tuyn ln chuynng. N to lc c ngun gc t phanh xe, c gi tr bng0.1*F
Chuyn nhng la chn m bo rng lc c nh nghacho ti trng di chuyn cu trc ko c v tr ngoi m hnh ktcu.
ng hp thoi Route Parameters
To trng hp ti di chuyn theo nhng thng s vng hp thoi Moving Loads .
M hp thoi Job Preferences
Chn la Structure Analysis t cy trong hp thoi
Chn phng php gii cc h phng trnh cho m hnhkt cu
Chp nhn kch thc gi nh v ng hp thoi JobPreferences
Bt u tnh ton kt cu. Khi tnh ton xong, thanh tiu ca khung nhn s hin th theo thng tin sau:Results -(FEM):available.
4.3 Trnh din ln xe v trng hp ti trng di chuyn
View menu / Display
Tab Loads : bt la chn Movingloads / Moving loads - vehicle ,OK
Chn 4: moving-crane load
Loads / Select Case Component
Chn: Current component4
LMC nt Animation
LMC nt Start
M hp thoi Display
Hin th ln nh ngha trn kt cu
Chn trng hp ti 4 ( ti trng di chuyn cu trc)
M hp thoi Case component
Chn thnh phn 4 ca trng hp ti di chuyn
M hp thoiAnimation
Bt u m phng ti trng di chuyn trn kt cu; ln s dichuyn dc theo knh xc nh.
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Dng (LMC nt ) v ngcng c m phng
Close
4.4 Phn tch kt qu
LMC chn RSAPlayoutResults / Results Layout
Chn: 4 moving load
Bt la chn My Moment tronghp thoi Diagrams
Chn tab Deformation trong hpthoi Diagrams
Bt la chn Deformation
Apply
Dng m phng ln xe
ng hp thoi Case component
M layout RESULTS RSAP . Mn hnh iu khin s chiathnh 3 phn: khung nhn cha m hnh kt cu; hp thoiDiagrams .v bng hin th gi tr phn lcCH : Bng hin th thm vo trng hp ti di chuyn(to vi k t + v -) nh gi tr ca ng bao trnv di, the
value of the upper and lower envelope, ring tng ci.
Chn trng hp ti 4 ( ti trng cu trc di chuyn).
Chn hin th momen un trong kt cu vi trnghp ti trng di chuyn
Chn hin th bin dng trong kt cu vi trng hp titrng di chuyn .
Hin th s momen un v s bin dng trong ktcu. Tng t, c th hin th s khc trong hp thoiDiagrams .
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Loads menu / Select CaseComponent
LMC nt Animation
LMC nt Start
Dng (LMC nt ) v ngcng c m phng
Close
Tt la chn My Moment tronghp thoi Diagrams
Chn tab Deformation trong hpthoi DiagramsTt la chn DeformationApply
M hp thoi Case component
M hp thoiAnimation
Bt u ghi li m phng momen un v bin dng ca ktcu
Dng ghi li m phng
ng hp thoi Case component
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4.5 ng nh hng
Ti layout START ca chng trnh RSAP .
LMC trong layout RSAP chn
Structure model / Start Layout
Results menu / Advanced / InfluenceLine
M tab NTM ca hp thoiInfluence Lines , bt 2 la : Myv Fz
LMC trong trng Element v g{8}
Apply
Trong tab Nodes ca hp thoiInfluence Lines , bt 2 la chn :Ux v Uz
LMC trong trng Node v g {2}
Bt la chn Open in a new window
Apply
RMC trong hp thoi InfluenceLines ni ng nh hng hinth cho nt s 2
Add coordinates
M hp thoi Influence Lines
Chn hin th: momen un v lc ct cho trng hp ti dichuyn
Chn thanh s c hin th ng nh hng. im c vtr (bng 0.5) ngha l ng nh hng s c to choim gia ca thanh.
M thm 1 ca s hin th ng nh hng cho khi
lng chn (nhn nh hnh di)
Chn hin th chuyn v ti nt cho trng hp ti trndi chuyn .
Chn nt s hin th ng nh hng.
S ng nh hng cho nt th 2 s hin th trong 1ca s mi .
M thm 1 ca s ni ng nh hng ca khi lng chn hin th .
M menu ng cnh
Nu la chn c chn, bng b tr di s ngnh hng s hin th thm ct cha ta ca im ktcu lin tip .
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5. Ti trng di chuyn - khung 3DV d ny hng dn nh ngha, phn tch v thit k 1 khung xng thp n gin minh ha trong
hnh bn di.n v d liu: (m) and (kN).
5 trng hp ti c gn ti kt cu v 3 trong s biu din trong hnh bn di
LOAD CASE 2 LOAD CASE 4
LOAD CASE 5
Nhng nguyn tc sau y s c p dng trong sut qu trnh nh ngha kt: bt k k t biu tng no ngha l biu tng thch hp s c n vi nt chut tri ( x ) c gi tr c chn l x trong hp thoi hoc nhp gi tr x LMC v RMC - nhng ch vit tt cho Click chut tri v Click chut phi. RSAP - vit tt cho Autodesk Robot Structural Analysis Professional.
bt u nh ngha kt cu chy chng trnh RSAP (n icon thch hp hoc chn t lnh trong taskbar) .Ca s m s hin th trn mn hnh, chn biu tng (Frame 3D Design),
Cui trong hng u tin.
CH : D liu tit din tiu chun Chu u (EURO) c s dng trong v d ny.
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5.1 nh ngha m hnh
nh ngha thanh kt cu
TIN TRNH THC HIN
Structure Model / Bars Layout
LMC trn trng BarType v chnColumnLMC trn trng Section v chn(IPE 600)
LMC trn trng Beginning( mu thay i sang xanh)
Nhp ta trong trng Beginningand End nh sau:(-8,0,0) (-8,0,7), Add(-8,0,7) (-8,0,14), Add
LMC trn trng BarType tronghp thoi Bars v chn BeamLMC trong trng Section v chn:(IPE 240)
LMC trong trng Beginning( mu thay i sang xanh)
Nhp im trong trng Beginningand Endnh sau:(-8,0,10) (-6,0,10), Add
LMC trong trng Bar Typetrong hp thoi Bars v chnSimple barLMC trn trng Section v chnUPN 240
LMC trong trng Beginning(mu nn i sang xanh)
Nhp im trong trng Beginningand End nh sau:(-8,0,8) (-6,0,10), Add
LMC trng Bar type trong hpthoi Bars, chn Simple barLMC trng Section , chn HEB240
LMC trng Beginning
( mu nn thay i sang xanh)
MIU T
Chn layout BARS t danh sch layouts hin th RSAP .
Chn thuc tnh ca thanh. D liu tit din tiuchun Chu u (EURO) c s dng.Ch : Nu tit din IPE 600 ko hin th trong danh sch,chn layoutSTRUCTURE MODEL / SECTION
and MATERIALS, n icon New trong hp thoiSections v thm tit din ti danh sch hin hnh.
Bt u xc nh thanh kt cu (ct kt cu)
Xc nh v tr ct kt cu.
Bt u nh ngha dm v chn thuc tnh cho n.D liu tit din Chu u (EURO) c s dng.Ch : Nu tit din IPE 240 ko hin th trong danh sch,chn theo bc trn.
Bt u nh ngha dm kt cu.
Xc nh 1 dm.
Bt u nh ngha 1 thanh thun ty v chn thuc tnhcho n. Tit din t d liu tiu chun Chu u (EURO)c s dng.
Bt u xc nh thanh thun ty trong kt cu
Xc nh 1 thanh thun ty.
Bt u xc nh thanh v gn thuc tnh cho n .CH : Nu tit din HEB 240 ko c trong danh schhin th, n nt v lmnhng bc tip theo nh bn trn.
Bt u xc nh ta thanh trong kt cu.
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Nhp ta thanh trong trngBeginningand End :(-8,0,14) (0,0,16), Add
Chn icon Zoom All t thanhcng c chun.
nh ngha gi
LMC trn trng chnStructure Model / Start Layout
Geometry menu / AdditionalAttributes / Brackets
Chn icon New Bracket .
Trong trng Length (L) nhp gi tr0.15; cc thng s cn li ko thayi
Add, Close
LMC trng Bars , chuyn sangkhung nhn hin th v chn thanhc nh ngha gn y (s 5s hin th trong trng Bars )
Apply, Close
nh ngha gi
LMC chnStructure Model / Supports Layout
Xc nh 1 thanh.
Phc hi ch xem ton mn hnh.
Chn layout u tin ca chng trnh RSAP .
M hp thoi Brackets nh ngha gi nt khung thanh kt cu .
M hp thoi New Bracket .
Xc nh di gi
Xc nh gi mi, ng hp thoi New Bracket
Chn thanh s c gn gi .
Gn gi ti thanh c chn, ng hp thoiBrackets . Kt cu c nh ngha hin th nh hnhdi.
Chn layout trong RSAP cho php nh ngha gi .
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Trong hp thoi Supports , LMCtrn trng Current Selection trongtab Nodal (con tr nhp nhytrong trng)
Chuyn sang khung hin th; nnt chut tri chn nt ct bngca s chn
T hp thoi Supports chn biutng gi ngm (icon s hinsng)
Apply
LMC chnStructure Model / Start Layout
CTRL+A
Edit menu / Edit / Vertical Mirror
Sang khung hin th v chn trcsao chp qua n (x = 0), LMC,Close
Chn icon Zoom All t thanhcng c chun.
nh ngha ti trng kt cu
LMC chnStructure Model/Loads Layout
LMC nt New trong hp thoiLoad Types .
Chn nt kt cu ni gi c xc nh.
Chn nt 1 s c nhp vo trong trng CurrentSelection .
Chn loi gi .
Chn loi gi c gn cho nt kt cu chn.
Chn layout u tin ca chng trnh RSAP .
Chn tt c cc nt v thanh.
i xng nhng thanh chn.
Xc nh trc i xng sao chp v ng hp thoiVertical Mirror .
Khi la chn ny c chn th m hnh kt cu s hin thton b .Kt cu nh ngha hin th nh hnh di.
Chn layout RSAP cho php nh ngha ti trng tcdng.
nh ngha 1 trng hp tnh ti (trong lng bn thn)vi tn chun DL1.
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LMC trong trngNature (Wind)
LMC nt NewLMC nt New
LMC trng Nature(Snow)
LMC nt New button
LMC trn trng th 2 trong ctCase ca bng Loads , chntrng hp ti th 2: WIND1 tdanh sch
LMC trn trng trong ct LoadType , chn loi ti trng (uniformload)
LMC trn trng trong ct List,chn ct tri nh cch hin th
trong khung
LMC trong ct "PX=" v g gi tr:(2.0)
LMC trn trng th 3 trong ctCase, chn trng hp ti th 3WIND1 t danh sch
LMC trn trng trong ct LoadType , chn loi ti trng (uniformload)
LMC trn trng trong ct List,chn ct hin th bn phi
LMC trn trng trong ct "PX=" vnhp gi tr: (1.5)
LMC trn trng th 4 trong ctCase, chn trng hp ti th 4:SN1 t danh sch
LMC trn trng trong ct Load
Type chn loi ti trng (uniformload)
LMC trn trng trong ct List,chn dm mi hin th
LMC trn trng trong ct " PZ=" v nhp gi tr: (-1.75)
LMC trong khung nhn View
Chn trng hp ti: wind.CH : Nu s trng hp ti ko thay i t ng, nhpbng tay s (2)Xc nh 2 trng hp ti ca gi (wind) vi tn chun:
WIND1 and WIND2.
Chn trng hp ti: snow.
nh ngha 1 trng hp ti tuyt (snow) vi tn chun SN1.
CH : Trng lng bn thn p dng cho mi loi thanhkt cu ( hng Z).
Xc nh ti trng cho trng hp ti th 2.
Chn loi ti trng.
Chn ct s gn ti trng uniform load .
Chn hng v gi tr ti phn b u.
nh ngha ti trng khc cho trng hp ti th 2.
CHn loi ti trng.
Chn thanh s gn ti trng uniform load .
Chn hng v gi tr ti phn b u.
Xc nh ti trng cho trng hp ti th 4.
Chn loi ti trng.
Chn thanh s c gn ti trng phn b u.
Chn hng v gi tr ti phn b u.
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CTRL + A
Khi trong khung nhn hin th mhnh kt cu hin hnh, chnEdit / Edit / Translate
LMC trn trn