Gioi thieuKhoa Cng trnh - B mn Cu Hm**************Bng tnh cu dm lin hp Thp - BTCTTn cng trnh:Cu Thc ML trnh:Km 5 +50, Quc l 1A, Tnh Lng SnCh nhim n:Th.Chu Vit BnhThc hin:Ths.Nguyn Vn VnhKim tra:Ths.Bi Vn DngQuy trnh thit k:22TCN 272 - 05H Ni: Thng 8 nm 2012

So Lieu1. s liu tnh ton thit k cu1.1. Bng s liu thit k1.1.1.Kh thng thuyn- Cp sng thng thuynCp sng6- B rng kh thng thuynBttm- Tnh khng thng thuynHttm1.1.2.Chiu di kt cu nhp1- Chiu di nhp giaLnhm- Khong cch t u dm n tim giam- Chiu di tnh ton nhpLttm- Chiu di on dm giaL2m- Chiu di on dm binL1-3m1.1.3.Ti trng thit k- Hot ti thit kHT- Ti trng ln thit k (Lane Load)qlankN/m- B rng ti trng lnblanm- Ngi i b (People Load)qNgkN/m2- Ti trng ngi i b di uqNgkN/m1.1.4.H s ti trng.max- Tnh ti giai on I (DC)g11.25- Tnh ti giai on I (DW)g21.5- Hot ti (Live Load)gh1.75- H s xung kch i vi hot ti (theo TTGH cng )1 + IM2- H s xung kch i vi hot ti (theo TTGH mi)1 + IM'11.1.5.H s iu chnh ti trng.- H s xt n tnh do dai ca kt cuhD- H s xt n tnh d tha ca kt cuhR- H s xt n tnh quan trng ca kt cuhl- Tch cc h s iu chnhh1.1.6.Vt liu ch to dm- B tng ch to bn mt Cu+ Cng chu nn ca btng tui 28 ngyfc'Mpa+ Trng lng ring ca b tnggckN/m3+ M un n hi ca b tngEcMpa0- Trng lng ring ca b tng atphalgbakN/m3- Thp ch to dm+ Loi thp ch to dm1+ K hiu thp+ Cp thp thit k3+ Gii hn chy ca thpfyMpa+ Gii hn ko t ca thpfuMpa+ M un n hi ca thpEsMpa+ Trng lng ring ca thpgskN/m30- Ct thp thng:+ Gii hn chy ca thpfyrMpa+ M un n hi ca thpEsrMpa- H s quy i t b tng sang thp+ Khi khng xt n hin tng t binn+ Khi c xt n hin tng t binn'- H s quy i hnh khi ng sutb1- H s m loganepee- Thp d ng lc ch to bn mt cu- Loi cp d ng lc.Thp74- Din tch mt taoftao- S tao cp trong mt b.ntao74- Din tch mt b cpapscm2- ng knh l cpflomm- Din tch mt l cpf1locm2- Gii hn chy ca cpfpyMpa- Gii hn ko t ca cpfpuMpa- ng sut trung bnh gi thit trong ct thp DLfpsMpa- H s cng ko ct thp DLa65- ng sut cng ko ct thp DLfpjMpa- M un n hi ca thp DLEpsMpa- H s KK1.2. Cc kch thc c bn ca cu.1.2.1. Quy m mt ct ngang- B rng phn xe chyBxecm1- S ln xe thit knlln- H s ln xem- L Ngi i bblecm3- Chiu rng g chn bnhbgccm1- Chiu cao g chn bnhhgccm- Chiu rng chn lan canbclccm6- Chiu cao chn lan canhclccm- Chiu rng ton cuBcaucm- S dm ch thit kndm- Khong cch gia cc dm chscm- Chiu di cnh hng tnh tondeocm- Chiu di cnh hng thit kdeocm1.2.2. Cu to bn b tng mt cu (Slab)- Chiu dy bn b tngtscm- Kch thc vt bn btng dm bin (Dm 1)+ Chiu cao vtthcm+ B rng vtbhcm- Kch thc vt bn btng dm bin (Dm 2)+ Chiu cao vtthcm+ B rng vtbhcm- Kch thc vt bn btng dm bin (Dm 3)+ Chiu cao vtthcm+ B rng vtbhcm- Kch thc vt bn btng tnh ton+ Chiu cao vtthcm+ B rng vtbhcm- Chiu di phn cnh hngdecm- Chiu di phn cnh trongS/2cm- Chiu rng thc t ca bnbscm1.2.3. Cu to dm ch.- Cng thc kinh nghim la chn kch thc dm ch+) Chiu cao dm thp+) Chiu cao bn bng+) B rng bn cnh- Cu to mt ct ngang dm ch.- Cu to bn bng (Web)+ Chiu cao bn bngDwcm+ Chiu dy bn bngtwcm20- Bn cnh chu nn (Compress flange)+ B rngbccm+ S tp bnnctp+ Chiu dy mt bntcm30+ Tng chiu dytccm20- Bn cnh chu kp (Tenssion flange)+ B rngbtcm+ S tp bnnttp+ Chiu dy mt bntcm30+ Tng chiu dyttcm- Chiu cao dm thpHsbcm- Chiu cao ton b dm lin hpHcbcm1.3. Ti trng thit k cu- Dm tnh tonDm1- Trng hp xp tiS lnln- S xe xp theo phng dc cundxe- S xe xp theo phng ngang cunngxe- Khong cch gn nht gia hai ln ti trngam- KC gn nht gia hai tim bnh xebm- KC cn li ca ln xecm- M t xe ti thit kS xe ti thit k (Truck)S xe 2 trc thit k (Tandem)S ti trng ln (Lane)- Xe ti thit k (Truck)+ Ti trng trcP1KNP2KNP3KN35145145+ Khong cch trca1a2a3a4a54.34.301.80- Xe 2 trc thit k (Tandem)+ Ti trng trcP1KNP2KNP3KN1101100+ Khong cch trca1a2a3a4a51.2001.80Trong :+ P1: Ti trng trc trc+ P2: Ti trng trc gia+ P3: Ti trng trc sau+ a1: Khong cch t trc trc n trc gia+ a2: Khong cch t trc gia n trc sau.+ a3: Khong cch gia cc xe trong on+ a4: Khong cch tim bnh xe theo phng ngang cu+ a5: Khong cch gia cc trc xe theo phng ngang cu1

&L&".VnArabiaH,Regular"TK Cu lin hp Thp - BTCT&R&".Vn3DH, Normal"B mn Cu - Hm&L&".VnArialH, Italic"KS Nguyn Vn Vnh&C&P&R&".VnArialH,Regular"Trng H Giao thng vn ti - H Ni

DTHH2. Xc nh THH ca mt ct dm ch2.1. Xc nh THH ca mt ct giai on I.- Mt ct tnh ton dm ch giai on I- Din tch mt ct dm thp (mt ct nguyn).- Mmen tnh ca mt ct i vi mp di ca dm thp.- Khong cch t y dm n TTH I-I :- Xc nh m men qun tnh ca mt ct+ M men qun tnh phn bn bng+ M men qun tnh bn cnh chu nn+ M men qun tnh phn cnh di+ M men qun tnh mt ct dm thp- Mmen tnh ca phn trn mt ct vi trc trung ho I - I- Kt qu tnh THH ca mt ct dm ch giai on I.+ Din tch mt ct dm thpANCcm2+ Mmen tnh mt ct i vi y dmSocm3+ Khong cch t y dm n TTH I - IY1cm+ KC t mp trn dm thp n TTH I - IYtIcm+ KC t mp di dm thp n TTH I - IYbIcm+ Mmen qun tnh phn bn bngIwcm4+ Mmen qun tnh ca bn cnh chu nn.Icfcm4+ Mmen qun tnh ca bn cnh chu ko.Itfcm4+ Mmen qun tnh dm thpINCcm4+ Mmen tnh mt ct i vi TTH I-ISNCcm3+ MMQT ca mt ct dm ch i vi trc OyIycm42.2. Xc nh THH ca mt ct giai on II.2.2.1. Xc nh b rng tnh ton ca bn mt cu- S tnh:- Theo Quy trnh 22TCN 272 - 05 b rng tnh ton ca bn mt cu xc nh nh sau :+ Xc nh b1:+ Xc nh b2:- Chiu di tnh ton kt cu nhpLttm- Khong cch gia cc dm chScm- Chiu di phn cnh hngdecm- Chiu dy bn mt cutscm- 1/2 Chiu dy bn bng1/2twcm- 1/4 B rng bn cnh chu nn1/4bccm+ Xc nh b1: Ly gi tr nh nht trong cc gi tr sau:Ta c1/8.Ltt =0cmVyb1 =0cm0cmde =0cm+ Xc nh b2: Ly gi tr nh nht trong cc gi tr sau:Ta c1/8.Ltt =0cmVyb2 =0cm0cmS/2 =0cm- B rng tnh ton bn btng mt cu i vi dm bin:bs =b1 + b2 =0cm- B rng tnh ton bn btng mt cu i vi dm trong:bs =b2 + b2 =0cm2.2.2. THH mt ct dm ch giai on II- Mt ct ngang chu mmen un dng:- Din tch bn btng- Din tch ct thp trong bn.- Khong cch t trng tm ct thp bn n mp trn dm thp.- Din tch mt ct lin hp ngn hn.- Mmen tnh ca bn btng vi trc trung ho ca tit din thp SxI- Khong cch t TTH I-I n TTH II-II- Xc nh mmen qun tnh ca tit din lin hp vi trc trung ho II-II+ Mmen qun tnh ca dm thp+ Mmen qun tnh ca bn b tng+ Mmen qun tnh ca phn vt bn btng+ Mmen qun tnh ca ct thp trong bn.+ Mmen qun tnh ca mt ct lin hp ngn hn- Xc nh mmen tnh phn bn BTCT i vi TTH II-II.- Khi tnh THH ca mt ct lin hp di hn th cc cng thc tnh vn ging nhkhi tnh THH ca mt ct lin hp ngn hn, ch thay h s n bng h s n'.Vi:+ n: H s quy i t btng sang thp i vi mt ct lin hp ngn hn.+ n': H s quy i t btng sang thp i vi mt ct lin hp di hn.- c trng hnh hc ca ct thp trong bn btng mt cu:+ Din tch li ct thp trnArtcm2+ Din tch li ct thp diArbcm2+ Tng din tch ct thp trong bnArcm2+ KC t trng tm ct thp bn n mp trn dm thpYrcm- Bng kt qu tnh c trng hnh hc ca mt ct dm bin.c trng hnh hcca dm binKhng xt t binC xt t binn vK hiuGi trK hiuGi trB rng cnh hngb1b1cmB rng cnh trongb2b2cmB rng tnh ton bn b tngbsbscmDin tch bn b tngAsoAso'cm2Din tch phn vt bnAhAh'cm2Din tch ton b bn btngAsAs'cm2Din tch ct thp trong bn btngArAr'cm2Din tch mt ct tnh iASTALTcm2Mmen tnh ca Mc vi trc I-ISxISxI'cm3Khong cch gia hai trc I-I v II-IIZ1Z1'cmMMQT ca dm thp vi trc II-IIINCIIINCII'cm4MMQT ca bn BTCT vi trc II-IIIsIs'cm4MMQT ca phn vt bn vi trc II-IIIhIh'cm4MMQT ca ct thp trong bn btngIrIr'cm4MMQT ca mt ct lin hp vi trc II-IIISTILTcm4MM tnh ca bn vi trc II-IISsSs'cm3- Bng kt qu tnh c trng hnh hc ca mt ct dm trong.c trng hnh hcca dm binKhng xt t binC xt t binn vK hiuGi trK hiuGi trB rng cnh ngoib1b1cmB rng cnh trongb2b2cmB rng tnh ton bn b tngbsbscmDin tch bn b tngAsoAso'cm2Din tch phn vt bnAhAh'cm2Din tch ton b bn btngAsAs'cm2Din tch ct thp trong bn btngArAr'cm2Din tch mt ct tnh iASTALTcm2Mmen tnh ca Mc vi trc I-ISxISxI'cm3Khong cch gia hai trc I-I v II-IIZ1Z1'cmMMQT ca dm thp vi trc II-IIINCIIINCII'cm4MMQT ca bn BTCT vi trc II-IIIsIs'cm4MMQT ca phn vt bn vi trc II-IIIhIh'cm4MMQT ca ct thp trong bn btngIrIr'cm4MMQT ca mt ct lin hp vi trc II-IIISTILTcm4MM tnh ca bn vi trc II-IISsSs'cm32.3. Xc nh THH ca mt ct giai on chy do.2.3.1. Xc nh v tr TTH do (PNA).- Tnh lc do ti cc phn ca tit din.+ Lc do ti bn cnh di dm thpPt = Fyt.bt. tt+ Lc do ti bn cnh trn dm thpPc = Fyc.bc. tc+ Lc do ti sn dm thpPw = Fyw.Dw. tw+ Lc do ti trng tm bn btngPs = 0,85.fc.As+ Lc do ti ct thp pha trn TTHPrt = Fyrt. Art+ Lc do ti ct thp pha di TTHPrb = Fyrb. Arb- Kim tra v tr trc trung ho ca mt ct+ NuPt + Pw > Pc + Prb + Ps + Prt=> TTH i qua sn dm+ NuPt + Pw < Pc + Prb + Ps + PrtvPt + Pw + Pc > Prb + Ps + Prt=> TTH i qua bn cnh trn ca dm thp+ NuPt + Pw + Pc < Prb + Ps + Prt=> TTH i qua bn btng.- Chiu cao phn sn dm chu nn trong trng hp TTH i qua sn dm+ S tnh:+ Cng thc xc nh chiu cao phn sn dm chu nn.- Bng tnh ton lc do ti cc phn ca mt ct.Tn gi cc i lngK hiuDm bindm trongn vDin tch bn cnh chu koAtcm2Din tch bn cnh chu nn.Accm2Din tch bn bngAwcm2Din tch tnh ton bn btngAscm2Lc do ti bn cnh chu koPtkNLc do ti bn cnh chu nnPckNLc do ti bn bngPwkNLc do ti trng tm bn btngPskNDin tch ct thp dc trong bn pha trnArtcm2Din tch ct thp dc trong bn pha diArbcm2Lc do ti ct thp pha trn TTHPrtkNLc do ti ct thp pha di TTHPrbkNLc do cnh di + sn dmPt + PwkNLc do cnh trn + bn BT + ct thpPc + Ps + Prt + PrbkNLc do cnh di + sn dm + cnh trnPt + Pw + PckNLc do bn BT + ct thpPs + Prt + PrbkN- Xc nh v tr TTH do (PNA) ca mt ct dm bin:+ Ta c:Pt + Pw =- Cng thc tnh mmen un b xung My3vVy:- Dm kim ton- ng sut trong dm thp do tnh ti giai on I+ Mmen max do tnh ti giai on IMD1ttkN.m+ Mmen qun tnh mt ct dm thpINCcm4+ KC t mp trn dm thp n TTH I - IyItcm+ KC t mp di dm thp n TTH I - IyIbcm+ ng sut mp trn dm thp.f1tMpa+ ng sut mp di dm thp.f1bMpa- ng sut trong dm thp do tnh ti giai on II+ Mmen max do tnh ti giai on IIMD2ttkN.m+ Mmen qun tnh mt ct LH di hnILTcm4+ KC t mp trn dm thp n TTH II - II'yII'tcm+ KC t mp di dm thp n TTH II - II'yII'bcm+ ng sut mp trn dm thp.f2tMpa+ ng sut mp di dm thp.f2bMpa- ng sut trong dm thp do mmen b xung+ ng sut mp trn dm thp do MADf3tMpa+ ng sut mp di dm thp do MADf3bMpa- Xc nh mmen un b xung MAD+ Mmen qun tnh mt ct LH ngn hnISTcm4+ KC t mp trn dm thp n TTH II - IIyIItcm+ KC t mp di dm thp n TTH II - IIyIIbcm+ Mmen un b xung i vi mp trn dm thpMtADkN.m+ Mmen un b xung i vi mp di dm thpMbADkN.m+ Mmen un b xung tnh tonMADkN.m- Xc nh mmen chy My+ Mmen max do tnh ti giai on IMD1kN.m+ Mmen max do tnh ti giai on IIMD2kN.m+ Mmen un b xungMADkN.m+ Mmen chyMykN.m2.3.3. Xc nh mmen do Mp.- Cng thc tnh ton:Trong :+ Pi: L lc do th i+ Zi: L khong cch t im t lc do th i n TTH do.- Trng hp TTH i qua sn dm ta c:+ S tnh:+ Cng thc tnh mmen do MpVi Zs: L khong cch t trng tm bn btng n mp trn ca dm thp- Din tch bn cnh chu nnAccm2- Din tch bn cnh chu koAtcm- Din tch dm thpANCcm2- B rng tnh ton ca bn btngbscm- Din tch bn btngAscm2- Din tch ct thp thngArcm2- KC t trng tm bn btng n mp trn dm thpYrcm- Chiu cao phn sn dm chu nnDcpcm- KC t trng tm bn btng n mp trn dm thpZscm- Mmen do ca mt ct dm chMpkN.m

Tinh tai3. Xc nh tnh ti tc dng ln KCN3.1. Xc nh tnh ti giai on I.3.1.1. Dm ngang ti mt ct gi.- Cu to chung:- S hiu thp lm lin kt ngang ti gi25- Chiu cao dm ngangHdncm- B rng bn cnhbccm- Chiu dy bn cnhtccm- Chiu dy bn bngtwcm- Mmen qun tnh ca dm ngangIdncm4- Trng lng trn 1 m dignkN/m- S dm ngang theo phng dc cunddm- S dm ngang theo phng ngang cunndm- Tng s dm ngang trn ton cunlkndm- Khong cch gia cc dm nganganm- Chiu di mi thanh lin kt ngangLnm- Trng lng lin kt ngang trn 1m di 1 dm chqdnkN/m3.1.2. H lin kt ngang ti cc mt ct trung gian.- Cu to chung:- Chiu cao h lin kt nganghdncm- S h lin kt ngang theo phng dc cundh- S h lin kt ngang theo phng ngang cunnh- Tng s h lin kt ngang trn ton cunlknh- Khong cch gia cc h lin kt nganganm- Thp gc cu to thanh ngang+ S hiu thp lm lin kt ngang18+ B rng cnh thp gcbacm+ Chiu dy cnh thp gctacm+ Din tch mt ct thanhacm2+ Trng lng thanh trn 1 m diqkN/m+ Mmen qun tnh ca 1 thanhIcm4+ S thanh ngang trnnntthanh+ Chiu di thanh ngang trn.Lntm+ S thanh ngang dinndthanh+ Chiu di thanh ngang diLndm- Thp gc cu to thanh xin+ S hiu thp lm lin kt dc18+ B rng cnh thp gcbacm+ Chiu dy cnh thp gctacm+ Din tch mt ct thanhacm2+ Trng lng thanh trn 1 m diqkN/m+ Mmen qun tnh ca 1 thanhI+ S thanh xinnxthanh+ Chiu di thanh xin.Lxm- Trng lng LKN trn 1m di 1 dm chqlknkN/m3.1.3. Sn tng cng.- Chiu cao sn tng cnghscm- Chiu dy sn tng cngtscm16- B rng sn tng cngbscm- Trng lng thanh sn tng cnggskN- Khong cch gia cc sn tng cngdom- Trng lng sn tng cng trn 1m di 1 dm chqskN/m3.1.4. H lin kt dc cu.- S hiu thp lm lin kt dc18- B rng cnh thp gcbgcm- Chiu dy cnh thp gctgcm- Trng lng thanh trn 1 m digdkN/m- Chiu di 1 thanh lin kt dcLdm- S thanh lin kt dc trn mt khoangntthanh- S khoang ca h lin kt dcnkkhoang- S thanh lin kt dc trn ton cundthanh- Trng lng LKD trn 1m di 1 dm chqdkN/m3.1.5. Xc nh tnh ti giai on I (tnh cho 1m di 1 dm ch).- Trng lng dm chqdckN/m- Trng lng dm ngang ti giqdnkN/m- Trng lng h lin kt ngang khc giqlknkN/m- Trng lng sn tng cngqskN/m- Trng lng lin kt dcqdkN/m- Trng lng bn b tng ct thpqskN/m- Trng lng g chn bnhqgckN/m- Trng lng mi ni dmqmnkN/m- Tnh ti tiu chun giai on IDCtckN/m- Tnh ti tnh ton giai on IDCttkN/m3.2. Xc nh tnh ti giai on II.3.2.1. Cu to kt cu mt cu.3.2.2. Xc nh tnh ti giai on II (tnh cho 1m di 1 dm ch).- L Ngi i b+ Chiu dy trung bnh l ngi i bhlecm+ B rng lBlecm+ Trng lng l ngi i b/1m di 1 dm chqlekN/m- Lp ph mt cucm+ Chiu dy lp b tng atphalhapcm+ Chiu dy lp b tng bo vhbvcm+ Chiu dy lp chng thmhctcm+ Chiu dy lp b tng mui luyn ch mng nhthmlmincm+ Chiu dy lp b tng mui luyn ch dy nhthmlmaxcm+ dc ngang mt cuin%+ Chiu dy trung bnh ca lp mui luynhmlcm+ Tng chiu dy lp ph mt cuhmccm+ B rng phn xe chyBxecm+ Trng lng lp ph mt cu/1m di 1 dm chqmckN/m- Trng lng lan can+ Trng lng phn chn lan cangclckN/m+ Trng lng lan can + tay vnqlckN/m- Tnh ti tiu chun giai on IIDWtckN/m- Tnh ti tnh ton giai on IIDWttkN/m

HSPBN4. Tnh h s phn b ngang4.1. Tnh h s phn b ngang theo PP n by.4.1.1. Ni dung tnh ton.- V tung AH phn lc gi: R1 ... Ri0.000.0000AH R1AH phn lc gi dm bin- Xp ti trng bt li ln AH.- Tnh h s phn b ngang theo cng thc :Trong : Yi l tung AH phn lc gi khi xp ti trng4.2.2. Kt qu tnh h s phn b ngang theo phng php n by.- Kt qu tnh h s PBN cho dm binTi trngTung AHH s gy1y2y3y4Ti trng NgiXe ti thit kXe 2 trc thit kTi trng ln thit k4.3. Tnh h s phn b ngang theo 22TCN 272-05.4.3.1. iu kin tnh ton.- B rng mt cu khng thay i trn sut chiu di nhp- S dm ch > 4, tr khi c quy nh khc.- Cc dm ch song song vi nhau v c cng xp x bng nhau.- Phn hng ca ng xe chy < 910mm, tr khi c quy nh khc.- Mt ct ngang cu ph hp vi quy nh trong quy trnh.4.3.2. Tnh tham s cng dc.- Cng thc tnh:- S dm ch thit kndcdm- Mun n hi ca vt liu ch to dmEbMpa- Mun n hi ca vt liu ch to bnEsMpa- T s mun n hi dm v mun n hi bnn- MMQT ca mt ct dm thpINCcm4- Din tch mt ct ngang dm thpANCcm2- Khong cch t trng tm dm thp n trng tm bnegcm- Tham s cng dcKgcm44.3.3. Tnh h s phn b ngang mmen.- iu kin p dng cc cng thc tnh ton.1100 < S < 4900mm110 < ts < 300mm6000 < L < 73000mm- H s phn b mmen cho dm gia.+ Trng hp c 1 ln xp ti.+ Trng hp s ln xp ti >= 2- H s phn b mmen cho dm bin.+ Trng hp c 1 ln xp ti: Tnh theo nguyn tc n by+ Trng hp s ln xp ti >= 2g = e.gdamgiavi- Bng tnh ton h s phn b ngang mmen.Cc i lngK hiuGi trn vKhong cch gia cc dm chScmChiu dy bn btng mt cutscmChiu di tnh ton kt cu nhpLttcmChiu di phn hng ca bn mt cudecmH s phn b mmen cho dm gia+ Trng hp 1 ln xp tigdg1+ Trng hp s ln xp ti >=2gdg2H s tnh i t dm gia sang dm bineH s phn b mmen cho dm bin+ Trng hp 1 ln xp tigdb1+ Trng hp s ln xp ti >=2gdb24.3.4. Tnh h s phn b ngang lc ct.- iu kin p dng cc cng thc tnh ton.1100 < S < 4900mm110 < ts < 300mm6000 < L < 73000mm- H s phn b lc ct cho dm gia.+ Trng hp c 1 ln xp ti.+ Trng hp s ln xp ti >= 2- H s phn b lc ct cho dm bin.+ Trng hp c 1 ln xp ti: Tnh theo phng php n by.+ Trng hp s ln xp ti >= 2g = e.gdamgiavi- Bng tnh ton h s phn b ngang lc ctTn gi cc kch thcK hiuGi trn vKhong cch gia cc dm chScmChiu dy bn btng mt cutscmChiu di tnh ton kt cu nhpLttcmChiu di phn hng ca bn mt cudecmH s phn b lc ct cho dm gia+ Trng hp 1 ln xp tigdg1+ Trng hp s ln xp ti >=2gdg2H s tnh i t dm gia sang dm bineH s phn b lc ct cho dm bin+ Trng hp 1 ln xp tigdg1+ Trng hp s ln xp ti >=2gdg24.4. Tng hp h s phn b ngangSTTS lnH s PBNK hiuTi trnggXetaigXe2trucgLangNg11 lnMmengM2Lc ctgV3>=2lnMmengM4Lc ctgV5Tnh tonMmengM6Lc ctgV

Noi luc5. Tnh ton ni lc5.1. mt ct tnh ton ni lc.- Phn chia chiu di cc on dm chL =0mL1 =0L2 =0L3 =0x1 =0mx2 =0mx3 =0mx4 =0m- Cc mt ct tnh ton ni lcSTTTn mt ctK hiuxn v1Mt ct gi0 - 0m2Mt ct L/8I - Im3Mt ct L/4II - IIm4Mt ct mi niIII - IIIm5Mt ct L/2IV - IVm6MC D-DV - Vm7MC E-EVI - VImTrong : x l khong cch tnh t tim gi n v tr mt ct.5.2. Tnh din tch AH ni lc.Mt ctCc tr s tnh din tch AHDin tch AHL(m)x(m)l - x(m)y = x(l-x)/ly1 = (l-x)/ly2 = x/lvM(m2)vV+(m2)vV-(m2)Tng v(m2)M1M2M3M4M5M6VoV1V2V3V4V5V65.3. Xc nh ni lc do xe ti v xe 2 trc thit k5.3.1. Xc nh mmen ti cc mt ct- Mt ct I-Ing nh hng mmen ti mt ct I - ICc i lngXe ti thit kXe 2 trc thit kMt ct I-IV tr t tix1x2x3x4x5x6xy00Tung AHy1y2y3y4y5y60.000.0000Ti trng trcPtr3Ptr2Ptr1Ptd3Ptd2Ptd1Ni lc do ti trng trcTngTruckkN.mTandemkN.mH s phn b ngang mmengh =Ni lc do hot ti tiu chunMtch =kN.mkN.mNi lc do hot ti tnh tonMtth =kN.mkN.m- Mt ct II-IIng nh hng mmen ti mt ct II - IICc i lngXe ti thit kXe 2 trc thit kMt ct II-IIV tr t tix1x2x3x4x5x6xy00Tung AHy1y2y3y4y5y60.000.0000Ti trng trcPtr3Ptr2Ptr1Ptd3Ptd2Ptd1Ni lc do ti trng trcTngTruckkN.mTandemkN.mH s phn b ngang mmengh =Ni lc do hot ti tiu chunMtch =kN.mkN.mNi lc do hot ti tnh tonMtth =kN.mkN.m- Mt ct III-IIIng nh hng mmen ti mt ct III - IIICc i lngXe ti thit kXe 2 trc thit kMt ct III-IIIV tr t tix1x2x3x4x5x6xy00Tung AHy1y2y3y4y5y60.000.0000Ti trng trcPtr3Ptr2Ptr1Ptd3Ptd2Ptd1Ni lc do ti trng trcTngTruckkN.mTandemkN.mH s phn b ngang mmengh =Ni lc do hot ti tiu chunMtch =kN.mkN.mNi lc do hot ti tnh tonMtth =kN.mkN.m- Mt ct IV-IV (mt ct gia nhp)ng nh hng mmen ti mt ct IV - IVCc i lngXe ti thit kXe 2 trc thit kMt ct IV-IVV tr t tix1x2x3x4x5x6xy00Tung AHy1y2y3y4y5y60.000.0000Ti trng trcPtr3Ptr2Ptr1Ptd3Ptd2Ptd11451453501100Ni lc do ti trng trcTngTruckkN.mTandemkN.mH s phn b ngang mmengh =Ni lc do hot ti tiu chunMtch =kN.mkN.mNi lc do hot ti tnh tonMtth =kN.mkN.m- Mt ct V-V (mt ct D - D)ng nh hng mmen ti mt ct V - VCc i lngXe ti thit kXe 2 trc thit kMt ct IV-IVV tr t tix1x2x3x4x5x6xy00Tung AHy1y2y3y4y5y60.000.0000Ti trng trcPtr3Ptr2Ptr1Ptd3Ptd2Ptd1Ni lc do ti trng trcTngTruckkN.mTandemkN.mH s phn b ngang mmeng =Ni lc do hot ti tiu chunMtch =kN.mkN.mNi lc do hot ti tnh tonMtth =kN.mkN.m- Mt ct VI-VI (mt ct E - E)ng nh hng mmen ti mt ct VI- VICc i lngXe ti thit kXe 2 trc thit kMt ct IV-IVV tr t tix1x2x3x4x5x6xy00Tung AHy1y2y3y4y5y60.000.0000Ti trng trcPtr3Ptr2Ptr1Ptd3Ptd2Ptd1Ni lc do ti trng trcTngTruckkN.mTandemkN.mH s phn b ngang mmeng =Ni lc do hot ti tiu chunMtch =kN.mkN.mNi lc do hot ti tnh tonMtth =kN.mkN.m5.3.2. Xc nh mmen ti cc mt ct- Mt ct O-O (mt ct gi)ng nh hng lc ctng nh hng lc ct ti mt ct 0 - 0Cc i lngXe ti thit kXe 2 trc thit kxyV tr t tix1x2x3x4x5x60.000.0000Tung AHy1y2y3y4y5y6Ti trng trcPtr3Ptr2Ptr1Ptd2Ptd1Ni lc do ti trng trcTngTruckkNTandemkNH s phn b ngang lc ctg =Ni lc do hot ti tiu chunVtch =kNkNNi lc do hot ti tnh tonVtth =kNkN- Mt ct I-Ing nh hng lc ctng nh hng lc ct ti mt ct I - ICc i lngXe ti thit kXe 2 trc thit kxyV tr t tix1x2x3x4x5x60.000.0000Tung AHy1y2y3y4y5y6Ti trng trcPtr3Ptr2Ptr1Ptd2Ptd1Ni lc do ti trng trcTngTruckkNTandemkNH s phn b ngang lc ctg =Ni lc do hot ti tiu chunVtch =kNkNNi lc do hot ti tnh tonVtth =kNkN- Mt ct II-IIng nh hng lc ctng nh hng lc ct ti mt ct II - IICc i lngXe ti thit kXe 2 trc thit kxyV tr t tix1x2x3x4x5x60.000.0000Tung AHy1y2y3y4y5y6Ti trng trcPtr3Ptr2Ptr1Ptd2Ptd1Ni lc do ti trng trcTngTruckkNTandemkNH s phn b ngang lc ctg =Ni lc do hot ti tiu chunVtch =kNkNNi lc do hot ti tnh tonVtth =kNkN- Mt ct III-IIIng nh hng lc ctng nh hng lc ct ti mt ct III - IIICc i lngXe ti thit kXe 2 trc thit kxyV tr t tix1x2x3x4x5x60.000.0000Tung AHy1y2y3y4y5y6Ti trng trcPtr3Ptr2Ptr1Ptd2Ptd1Ni lc do ti trng trcTngTruckkNTandemkNH s phn b ngang lc ctg =Ni lc do hot ti tiu chunVtch =kNkNNi lc do hot ti tnh tonVtth =kNkN- Mt ct IV-IV (mt ct gia nhp)ng nh hng lc ctng nh hng lc ct ti mt ct IV - IVCc i lngXe ti thit kXe 2 trc thit kxyV tr t tix1x2x3x4x5x60.000.0000Tung AHy1y2y3y4y5y6Ti trng trcPtr3Ptr2Ptr1Ptd2Ptd1Ni lc do ti trng trcTngTruckkNTandemkNH s phn b ngang lc ctg =Ni lc do hot ti tiu chunVtch =kNkNNi lc do hot ti tnh tonVtth =kNkN- Mt ct V-V (mt ct D - D)ng nh hng lc ctng nh hng lc ct ti mt ct V - VCc i lngXe ti thit kXe 2 trc thit kxyV tr t tix1x2x3x4x5x60.000.0000Tung AHy1y2y3y4y5y6Ti trng trcPtr3Ptr2Ptr1Ptd2Ptd1Ni lc do ti trng trcTngTruckkNTandemkNH s phn b ngang lc ctg =Ni lc do hot ti tiu chunVtch =kNkNNi lc do hot ti tnh tonVtth =kNkN- Mt ct VI-VI (mt ct E - E)ng nh hng lc ctng nh hng lc ct ti mt ct VI - VICc i lngXe ti thit kXe 2 trc thit kxyV tr t tix1x2x3x4x5x60.000.0000Tung AHy1y2y3y4y5y6Ti trng trcPtr3Ptr2Ptr1Ptd2Ptd1Ni lc do ti trng trcTngTruckkNTandemkNH s phn b ngang lc ctg =Ni lc do hot ti tiu chunVtch =kNkNNi lc do hot ti tnh tonVtth =kNkN5.4. Xc nh ni lc do ti trng Ln v ti trng NgiNi lcDin tch AHTi trngH s phn b ngangNi lc tiu chun(TTGH S dng)Ni lc tnh ton(TTGH Cng I)nvv+qlanqNgglangNgStclanStcNgSttlanSttNgM1kN.mM2kN.mM3kN.mM4kN.mM5kN.mM6kN.mVokNV1kNV2kNV3kNV4kNV5kNV6kN5.5. Xc nh ni lc do tnh ti.Ni lcDin tch AHTnh titiu chun (kN/m)Ni lc tiu chun(TTGH S dng)Ni lc tnh ton(TTGH Cng I)nvvDCtcDWtcStcDCStcDWTngSttDCSttDWTngM1kN.mM2kN.mM3kN.mM4kN.mM5kN.mM6kN.mVokNV1kNV2kNV3kNV4kNV5kNV6kN5.6. Tng hp ni lc5.6.1. Tng hp ni lc tiu chun (TTGH S dng)Ni lcDo tnh ti TCDo hot ti tiu chunTT+Xe ti+Ln+NgTT+2 trc+Ln+NgNi lc TC maxnvTnh ti 1Tnh ti 2Xe tiXe 2 trcLnNgiM1kN.mM2kN.mM3kN.mM4kN.mM5kN.mM6kN.mVokNV1kNV2kNV3kNV4kNV5kNV6kN5.6 .2. Tng hp ni lc tnh ton (TTGH Cng I)Ni lcDo tnh ti TTDo hot ti tnh tonTT+Xe ti+Ln+NgTT+2 trc+Ln+NgNi lc TT maxnvTnh ti 1Tnh ti 2Xe tiXe 2 trcLnNgiM1kN.mM2kN.mM3kN.mM4kN.mM5kN.mM6kN.mVokNV1kNV2kNV3kNV4kNV5kNV6kN

Noi luc

Kiem toan

STC

Neo

Lien ket

Ban MC

Bang tra

6. Kim ton dm ch theo cc TTGH6.1. Kim ton dm theo iu kin cu to6.1.1. Kim tra t l cu to chung ca dm chu un- Cng thc kim ton:- B rng bn cnh chu nnbccm- S tp bn cnh chu nnnccm- Chiu dy mt bntcm- Tng chiu dy bn cnh chu nntccm- MMQT ca bn cnh chu nn trong mt phng bn bngIyccm4- MMQT ca mt ct dm ch i vi trc OyIycm4- Kim tonTa c:0.1>Kt lun:t6.1.5. Kim tra iu kin tc ng qua li gia sn dm v cnh nn.- Cng thc kim ton:- Kim ton:Ta c:>Kt lun:Khng t6.1.6. Kim ton iu kin ging bn cnh chu nn ca mt ct c chc.- Cng thc kim ton:- Chiu di on bn cnh khng c ging- Bn knh qun tnh ca mt ct thp i vi trc Oy- Mmen nh trong 2 u ca on khng c ging- Mmen do ca mt ct dm6.2. Kim ton sc khng un ca dm ch.6.2.1. Xc nh sc khng un ca mt ct lin hp c.- Mmen khng un tnh ton.Mr = Ff.MnTrong :+ Mr: Mmen khng un tnh ton+ Mn: Mmen khng un danh nh+ Ff: H s sc khng un- Xc nh mmen khng un danh nh.+ Nu:thMn = Mp(1)+ Nu:th(2)- Xc nh D':- Chiu cao dm thpHsbcm- Chiu dy bn btngtscm- Chiu cao vt dmthcm- H sb- Chiu cao so snhD'cm- Khong cch t mp trn bn BT n TTH doDpcm- Kim tra iu kin kim ton:D' =>Dp=>5.D' =Kt lun:Tnh Mn theo cng thc:(2)- Mmen chy ca mt ct dmMykN.m- Mmen do ca mt ct dmMpkN.m- Mmen khng un danh nh ca mt ctMnkN.m- H s sc khng unFf100- Mmen khng un tnh ton ca mt ctMrkN.m6.2.2. Kim ton kh nng chu lc ca dm- Cng thc kim ton.- Mmen tnh ton ln nhtMukN.m- Mmen khng un tnh ton ca mt ctMrkN.m- Kim ton:Ta c:Mr =Dm khng kh nng chu lcT l:Kt lun:Khng t6.3. Kim ton sc khng ct ca dm ch.6.3.1. Xc nh h s c.- H s c: L t s gia ng sut on ct v cng chy ct.- Cng thc tnh ton:+ Nu:thc = 1(1)c1 =1+ Nu:th(2)c2 =0.000+ Nu:th(3)c3 =0Vi- Mun n hi ca thpEsMpa- Chiu cao ca cc sn tng cng nghscm- Chiu rng ca cc sn tng cng ngtscm- Chiu dy ca cc sn tng cng ngbscm- Khong cch gia cc sn tng cng ngdom- Chiu cao ca sn dmDwcm- H s kk- Kim tra iu kin tnh ton:>>=> h s c tnh theo cng thc:(2)Vyc =6.3.2. Xc nh sc khng ct ca sn dm.a. iu kin tnh ton.- Mt ct dm ch l mt ct c chc.- Sn dm c b tr sn tng cng.- Mt ct dm s dng mt loi thpb. Mnh sn dm pha trong:- Cng thc tnh ton:+ Nu:Mu 0,5 Ff Mp+ Nu:Mu > 0,5 Ff Mp(1)(2)Vi:v- Mmen un tnh ton ln nhtMukN.m- Sc khng un danh nh ca mt ct.MnkN.m- H s sc khng unFf- Sc khng un tnh ton ca mt ct.MrkN.m- Mmen chy ca mt ctMykN.m- Mmen do ca mt ctMpkN.m- H s RRR=0- Sc khng ct doVpkN- Kim tra iu kin tnh ton:Ta c:Mu =0.0>0,5 Ff Mp =0kN.m=> Vy Vn tnh theo cng thc:(1)- Sc khng ct danh nhVnkN- H s sc khng ctFv100- Sc khng ct tnh tonVrkNc. Mnh sn dm u dm c lc ct ln nht.- Cng thc tnh ton:+ Sc khng ct danh nh:Vn = c.Vp+ Sc khng ct do:Vp = 0,58 Fyw Dw. tw- Sc khng ct doVpkN- H s cc- Sc khng ct danh nhVnkN- H s sc khng ctFv- Sc khng ct tnh tonVrkN6.3.3. Kim ton kh nng chu ct ca sn dm.- Cng thc kim ton:- Sc khng ct tnh ton.Vr = Fv.VnTrong :+ Vr: Sc khng ct tnh ton+ Vn: Sc khng ct danh nh+ Fv: H s sc khng ct.- Kim ton mnh sn dm u dm:Ta c:Lc ct tnh ton ln nht:Vu=kNSc khng ct tnh ton:Vr =kNVy:Vr =0.00 0,6m.+ Trong t hp ti trng mi khng xt n ni lc do ti trng thng xuyn.- ng sut un v ng sut ct do ti trng mi phi c ly bng 2 ln gi tr tng ngtheo t hp ti trng mi c quy nh trong bng t hp ti trng v h s ti trng.- Kim ton mi phi thc hin khi sn dm khng b tr sn tng cng dc.6.4.2. Kim ton theo iu kin ng sut do un.- Cng thc kim ton:+ Nu:thfcf Fyw(1)+ Nu:th(2)- S xp ti trng khi tnh ni lc mi.- ng sut trong dm thp do hot ti tiu chun.+ Mmen tiu chun do xe ti thit kMTrtckN.m+ Mmen tiu chun do ti trng lnMLantckN.m+ Mmen tiu chun do ti trng NgiMNgtckN.m+ H s vt ti i vi hot tigh'+ H s xung kch khi tnh mi(1+IM)'+ H s ln khi tnh mim'+ Mmen tiu chun do tnh ti giai on IIMLLtckN.m+ Mmen qun tnh mt ct LH di hnISTcm4+ KC t mp trn dm thp n TTH II - II'yIItcm+ KC t mp di dm thp n TTH II - II'yIIbcm+ ng sut mp trn dm thp.fLLtMpa+ ng sut mp di dm thp.fLLbMpa- ng sut tnh mi trong dm thp- Chiu cao chu nn n hi ca sn dmDccm- Xc nh cng thc kim ton:Ta c:>Vy kim ton theo cng thc:(1)- Kim ton theo iu kin (1):Ta c:fcf =0.000>Fyw =0MpaKt lun:Khng t6.4.3. Kim ton theo iu kin ng sut do ct.- Cng thc kim ton:fcf 0,58 c Fyw- ng sut mp trn dm thp do ti trng mifttMpa- T s ng sut on ct v cng chy ctc- T s ng sut on ct v cng chy ct- Kim ton:Ta c:fcf =0.00>0,58.c.fy =0MpaKt lun:Khng t6.5. Kim tra vng ca KCN theo TTGH s dng.6.5.1. Kim tra vng do tnh ti theo phn tch n hi.- Mc ch kim tra vng do tnh ti l m bo vng do tnh ti khngnh hng n giao thng trn cu.- vng do tnh ti c kim tra thng qua gi tr ng sut trong cc bn cnh ca dm.- Cng thc kim ton ng sut trong bn cnh ca dm lin hp:+ ng sut ti bn cnh trn:+ ng sut ti bn cnh di:Trong :+ fc: ng sut ti mp bn cnh trn do tnh ti gy ra.+ ft: ng sut ti mp bn cnh di do tnh ti gy ra.+ Rb: H s truyn ti trng.+ Rh: H s lai.- ng sut trong dm thp do tnh ti tiu chun giai on I+ Mmen un do tnh ti tiu chun GIMD1tckN.m+ Mmen qun tnh mt ct dm thpINCcm4+ KC t mp trn dm thp n TTH I - IyItcm+ KC t mp di dm thp n TTH I - IyIbcm+ ng sut mp trn dm thp do MD1f1tMpa+ ng sut mp di dm thp do MD1f1bMpa- ng sut trong dm thp do tnh ti tiu chun giai on II+ Mmen tiu chun do tnh ti giai on IIMD2tckN.m+ Mmen qun tnh mt ct LH di hnILTcm4+ KC t mp trn dm thp n TTH II - II'yII'tcm+ KC t mp di dm thp n TTH II - II'yII'bcm+ ng sut mp trn dm thp.f2tMpa+ ng sut mp di dm thp.f2bMpa- ng sut mp trn dm thp do tnh tiftMpa- ng sut mp di dm thp do tnh tifbMpa- H s truyn ti trngRb100- H s laiRh100- Kim ton ng sut bn cnh trn:ft =0.00>MpaKt lun:Khng t- Kim ton ng sut bn cnh di:fb =0.00>MpaKt lun:Khng t6.5.2. Kim tra vng do hot ti theo phn tch n hi.a. Nguyn tc kim tra vng.- Khi tnh vng tuyt i ln nht phi t ti tt c cc ln xe v ng b hnh.- Khi tnh chuyn v tng i ln nht th s lng v cc v tr cc ln t ti phi chn sao cho hiu ng chnh lch ln nht.- Ti trng tnh ton l ti trng tiu chun c xt lc xung kch IM v h s ln xe nhngkhng xt n h s ti trng.- vng do hot ti cn ly theo gi tr ln hn ca+ Kt qu tnh ton do mt mnh xe ti thit k trong mi ln xe.+ Kt qu tnh ton do 25% xe ti thit k cng vi ti trng ln thit k.b. Tnh vng ca kt cu nhp.- i vi kt cu nhp gin n ta c th tnh vng theo cng thc:+ vng do ti trng tp trung gy ra i vi mt ct cch gi on x.+ vng do ti trng di u gy ra ti mt ct gia nhp.Trong :+ a: L khong cch tnh t ti trng n gi bn tri.+ L: L chiu di tnh ton kt cu nhp.+ x: Khong cch t mt ct tnh ton n gi bn tri.+ E: L mun n hi ca dm ch.+ I: Mmen qun tnh ca mt ct dm ch.+ g: H s phn b ngang ca hot ti.+ 1+ IM: H s xung kch+ P: Ti trng tp trung.+ q: Ti trng di u.- Tnh vng ca dm do hot ti+ Chiu di tnh ton kt cu nhpLttm+ Mt ct tnh ton vngMt ct5+ Khong cch t mt ct tnh ton n gi bn trixm+ Mun n hi ca dm chEsMpa+ Mmen qun tnh ca mt ct lin hp ngn hnISTcm4+ H s phn b ngang ca hot tig+ Ti trng ln di uqlankN/m+ vng do ti trng lnDlancm+ H s phn b ngang ca ti trng Ngigng+ Ti trng Ngi di uqngkN/m+ vng do ti trng NgiDNgcm+ vng do xe ti thit kTn trcP3P2P1Ti trng trckNKC trc n gi triam vng do trc th iDPicmTng vng do xe ti TKDtrcmc.Cng thc kim ton vng do hot ti.- Cng thc kim ton:Trong :+ DLL: vng do hot ti tiu chun.+ [D]: vng gii hn cho php.+ i vi ti trng xe ni chung:- Kim ton vng:+ vng do ti trng lnDlancm+ vng do ti trng lnDNgcm+ vng do xe ti thit kDtrcm+ vng do xe ti thit k + NgiDtr+Ngcm+ vng do 25% xe ti thit k + ln + NgiDtr+lan+Ngcm+ vng do hot ti thit kDLLcmTa c:DLL =0.000>0cmKt lun:Khng t6.5.3. Tnh ton vng kt cu nhp.- Cng thc tnh ton vng thit k:- Xc nh vng do tnh ti.+ Cng thc tnh ton:+ Chiu di tnh ton kt cu nhpLttm+ Mun n hi ca dm chEsMpa+ Mmen qun tnh ca mt ct dm thpINCcm4+ Mmen qun tnh ca mt ct lin hp di hnILTcm4+ Tnh ti tiu chun giai on IDCtckN/m+ Tnh ti tiu chun giai on IIDWtckN/m+ vng do tnh ti tiu chun giai on IDDCcm+ vng do tnh ti tiu chun giai on IIDDWcm+ vng tng cng do tnh ti tiu chunDcm- Xc nh vng thit k+ vng do hot ti tiu chunDLLcm+ vng do tnh ti tiu chunDtcm+ vng tnh tonDvcm+ vng thit kDvtkcm+ Kim tra vng thit kKt lun6.6. Kim tra dao ng ca KCN theo TTGH s dng.6.6.1. Nguyn tc tnh ton.- Ti trng s dng kim ton l tnh ti tiu chun.- Ta dng cng thc n gin tnh chu k dao ng khi m bo cc iu kin sau:+ Tnh chu k dao ng ca KCN dm gin n.+ cng EI khng thay i trn ton chiu di dm.+ Tnh ti thay i khng qu 10% theo phng dc dm.6.6.2. Kim ton dao ng ca dm- Cng thc tnh chu k dao ng theo phng thng ng.Trong + L: L khu tnh ton nhp.+ qtc: L tnh ti tiu chun+ EI: cng chng un theo phng thng ng+ g: gia tc trng trng- Tnh chu k dao ng theo phng thng ng+ Tnh ti giai on I tiu chunDCtckN/m+ Tnh ti giai on II tiu chunDWtckN/m+ Tnh ti tiu chun ton bqtckN/m+ Mun n hi ca dm chEsMpa+ Mmen qun tnh ca mt ct lin hp ngn hnISTcm4+ Gia tc trng trnggcm/s2+ Chu k dao ng theo phng thng ng.Ts- Kim ton dm theo iu kin dao ng:Ta c :Chu k dao ng theo phng thng ng:0.3>T =0.000Bf =0.00kNKt lun:Khng t7.2.3. Kim ton sc khng nn dc trc.- Cng thc kim ton:Trong :+ Vu: Lc ct tnh ton ln nht ti mt ct gi.+ Pr: Sc khng nn tnh ton.Pr = Fc Pn+ Pn: Sc khng nn danh nh.1. Nu mnh l < 2,25 th:Pn = 0,66l Fy As(1)2. Nu mnh l > 2,25 th:(2)+ l: mnh ca sn tng cng.+ K: H s chiu di hiu dng.K =0.75+ rs: Bn knh qun tnh ca mt ct hiu dng ly i vi trc i qua giachiu dy sn dm.- Xc nh mnh ca sn tng cng.+ H s chiu di hiu dngK+ Chiu di tnh ton ca sn tng cngLcm+ Din tch mt ct sn tng cngApncm2+ MMQT ca sn tng cng vi trc qua gia bn bngItcm4+ Bn knh qun tnh ca mt ct sn tng cngrscm+ mnh ca sn tng cngl- Xc nh sc khng nn danh nh ca sn tng cng.+ Ta cl =0Pr =0kNKt lun:Khng t7.2.4. Kim tra mnh gii hn ca sn tng cng.- Cng thc kim ton:Trong :+ L: Chiu di khng ging ca sn tng cng.+ K: H s chiu di hiu dng.+ rs: Bn knh qun tnh ca mt ct hiu dng ly i vi trc i qua giachiu dy sn dm.- Kim ton:Ta c0.000120Kt lun:07.3. Kim tra sn tng cng ti trung gian.7.3.1. Kim tra iu kin cu to.- Cng thc kim ton b rng ca sn tng cng:(1)(2)- Cu to sn tng cng ti mt ct trung gian.+ S sn tng cng hai bn sn dmn+ Sn tng cng n hay kp1+ B rng ca sn tng cngbtcm+ B rng chn ng hn bn bng vi bn cnhbdhcm+ Chiu dy ca sn tng cngtpcm+ Din tch mt ct sn tng cngApncm2+ MMQT ca sn tng cng vi trc qua gia bn bngItcm4- Kim ton iu kin (1)Ta c5.00>bt =0.0000.00Kt lun:0- Kim ton iu kin (2)+ B rng bn cnh chu nnbccm+ B rng ca sn tng cngbtcm+ Chiu dy ca sn tng cngtpcm0,25.bf =0>bt =>16.tp =cmKt lun:Khng t7.3.2. Kim tra mmen qun tnh ca sn tng cng.- Cng thc kim ton:vi- MMQT ca sn tng cng vi trc qua gia bn bngItcm4- Khong cch gia cc sn tng cngdocm- Chiu cao mnh sn dm ln nhtDpcm- H sJ- Kim tonTa cJ =0Kt lun:t85

8. Tnh ton lin kt dm ch.8.1. Tnh ton lin kt bn cnh vi bn bng.8.1.1. Lc gy trt gia bn cnh v bn bng.- Cng thc tnh:Trong :+ Vtt: Lc ct tnh ton ln nht trong dm.+ Sc: L mmen tnh ca bn btng v cnh trn dm thp vi TTH II - II- Lc gy trt do tnh ti giai on I+ Lc ct tnh ton do tnh ti giai on IVIttkN+ Mmen tnh ca cnh trn dm thp vi trc TTH I-IScIcm3+ Mmen qun tnh ca mt ct nguynINCcm4+ Lc gy trt do tnh ti giai on ITIkN/m- Lc gy trt do tnh ti giai on II+ Lc ct tnh ton do tnh ti giai on IIVIIttkN+ Mmen tnh ca cnh trn dm thp vi trc TTH II-II'ScII'cm3+ Mmen tnh ca bn btng vi trc TTH II-II'SsII'cm3+ Mmen qun tnh ca mt ct LH di hnILTcm4+ Lc gy trt do tnh ti giai on IITIIkN/m- Lc gy trt do hot ti+ Lc ct tnh ton do tnh ti giai on IIVhttkN+ Mmen tnh ca cnh trn dm thp vi trc TTH II-IIScIIcm3+ Mmen tnh ca bn btng vi trc TTH II-IISsIIcm3+ Mmen qun tnh ca mt ct LH ngn hnISTcm4+ Lc gy trt do hot tiTIIkN/m- Tng lc gy trt gia bn cnh v bn bngTkN/m8.1.2. Xc nh p lc phn b do ti trng bnh xe.- Cng thc tnh:Trong + P: L ti trng bnh xe nng c xt n h s vt ti v h s xung kch+ a: H s xt n tnh cht tip xc gia mp nh bn bng v bn cnh.+ l: Chiu di phn b ca ti trngl= a2+2.H+ a2: Chiu di tip xc ca bnh xe vi mt ng.+ H: Khong cch t bn mt cu trn dm n ng tim ca ng hn.- Chiu di tip xc ca bnh xea2cm- Ti trng bnh xePkN- H s vt ti ca hot ti tnh tongh- H s xung kch.1+IM- Chiu dy bn mt cu (k c lp ph)Hcm- Chiu di phn b p lclcm- H s tip xc gia bn cnh v bn bnga- p lc phn b do ti trng bnh xe.VkN/m8.1.3. Tnh chiu cao ng hn- Xc nh cng tnh ton ca ng hn gc+ H s sc khng i vi thp hnfe280+ Loi que hn+ Cng thp que hnFexxMPa+ Cng tnh ton ca ng hn gcRrgMPa- Chiu cao tnh ton ca ng hn- Chiu cao thc t ca cnh ng hnTrong + b: H s ph thuc vo phng php hn v cu to ng hn.+ Rrg: Cng ca ng hn gc.+ w: Chiu cao thc t ca cnh ng hn.+ a: Gc nghing gia mt ng hn vi cnh ng hn- Lc gy trt gia bn cnh vi bn bng.TkN/m- p lc phn b do ti trng bnh xe.VkN/m- Cng tnh ton ng hn gc.RrgMPa- Chiu cao tnh ton ca ng hntdhcm- H s trit gim chiu cao tnh ton ng hnb- Gc nghing gia mt ng hn vi cnh ng hna- Chiu cao thc t cn thit ca cnh ng hnwcm- Chiu cao ng hn thit kwdhtkcm20- Kim tra ng hn b trKt lun8.2. Tnh ton mi ni dm ch.8.2.1. Xc nh kh nng chu lc ca bulng CC- Sc khng trt danh nh:Rn = Kh Ks Ns Pt- Sc khng trt tnh ton:Rr = f.Rn- Loi bulng thit k01- ng knh thn bulngdcm244- ng knh l bulngdlocm- Lc ko ti thiu trong bulngPtkN- H s kch thc l (l tiu chun)Kh- iu kin b mt loi1- H s iu kin b mtKs- S mt ct ct qua thn bulngNsmt- Sc khng trt danh nh ca bulngRnkN- H s sc khng trtf100- Sc khng trt tnh ton ca bulngRrkN8.2.2. Tnh mi ni bn cnh dm ch- S tnh mi ni bn cnh.85- Mi ni bn cnh chu lc dc NoNo = Fy.AthbcTrong + Fy: Cng chy quy nh nh nht ca thp+ Abcth: Din tch bn cnh thu hp.- S bu lng cn thit b tr mt bn mi ni.- Kt qu tnh v b tr mi ni cnh trn dm thp.Tn gi cc i lngK hiun vChiu dy bn tp ni cnh trn.tbtcm20B rng bn p ngoi.bbtncmB rng bn p trong.bbttcmS ct bu lng b tr trn bn cnh.ncotctDin tch bn cnh thu hpAfthcm2Lc dc trc tc dng ln mi niNokNKh nng chu lc ca bu lng.RrbkNS bu lng cn b tr mt bn mi ninctbu lngChn s bu lng b tr 1 bn mi ninbtbu lngS hng bu lngnhhngKhong cch gia cc hngahangcmKhong cch t bu lng ngoi cng n mpamepcm50Chiu di bn tp ni cnh trn.LbtcmKim tra s bu lng b trKt lun- Kt qu tnh v b tr mi ni cnh di dm thp.Tn gi cc i lngK hiun vChiu dy bn tp ni cnh di.tbtcm20B rng bn p ngoi.bbtncmB rng bn p trong.bbttcmS ct bu lng b tr trn bn cnh.ncotctDin tch bn cnh thu hpAfthcm2Lc dc trc tc dng ln mi niNokNKh nng chu lc ca bu lng.RrbkNS bu lng cn b tr mt bn mi ninctbu lngChn s bu lng b tr 1 bn mi ninbtbu lngS hng bu lngnhhngKhong cch gia cc hngahangcmKhong cch t bu lng ngoi cng n mpamepcmChiu di bn tp ni cnh trn.LbtcmKim tra s bu lng b trKt lun8.2.3. Tnh mi ni bn bng dm cha. Cu to mi ni- Mi ni bn bng c b tr theo cu to sau kim tra kh nng chu lc ca bu lng.- Cu to mi ni dm:b. B tr bulng trn mi ni.Tn gi cc i lngK hiun vS ct bulng b tr 1 bn mi nincotctS hng bulng b tr 1 bn mi ninhanghngTng s bulng 1 bn mi ninbu lngKhong cch gia cc ctacotcmKhong cch gia cc hngahangcmK/c t tim bu lng ngoi cng n mp bn thpamepcmChiu dy bn tp nitbtcmB rng thit k ca bn tp ni.bbtcmChiu cao thit k ca bn tp ni.hbtcmChiu cao ti a ca bn tp.hbtcmKim tra chiu cao ca bn tp.Kt lunKC t bulng xa nht n trc OyxmaxcmKC t bulng xa nht n trc OxymaxcmKhong cch t bulng xa nht n trng tmrmaxcmGc nghing gia phng ca bulng xa nht vi trc OxaTng bnh phng cc khong cchcm2c. Xc nh lc tc dng ln bulng xa nht.- Lc tc dng ln bulng do lc ct:- Lc tc dng ln bulng do mmen:Phn chia TM thnh hai thnh phn lcTMx = TM .sinaTMy = TM. cosa- Lc tc dng ln bulng xa nht l:- Kim ton kh nng chu lc ca bulngTrong + Mw: L mmen un do bn bng chu+ Mtt: L mmen tnh ton ti v tr mi ni dm.+ Vw = Vtt: L lc ct tnh ton ti v tr mi ni.+ n: S bu lng b tr mt bn mi ni bn bng.+ ri: Khong cch t bu lng th i n trng tm ca m bu lng lin kt.+ rmax: Khong cch t bu lng xa nht n trng tm ca m bu lng lin kt.+ Iw: Mmen qun tnh ca tit din bn bng.+ Itd: Mmen qun tnh ca tit din dm ch.- Mmen qun tnh ca mt ct lin hp ngn hnIST0cm4- Mmen qun tnh ca mt ct bn bngIw0cm4- Mmen un tnh ton ti v tr mi niMttkN.m- Mmen un do bn bng chuMwkN.m- Lc ct tnh ton ti v tr mi niVttkN- Lc tc dng ln 1 inh do lc ctTVkN- Gc nghing gia phng ca bulng xa nht vi trc Oxa- Lc tc dng ln 1 inh do mmenTMkN+ Thnh phn lc TM song song vi trc OxTMxkN+ Thnh phn lc TM song song vi trc OxTMykN- Lc tc dng ln bu lng xa nhtTkN- Kim tra kh nng chu lc ca bulngT [Rc,em]Ta c:T =0.00>Rrb=0kNKt lunKhng tBng to bulng trn mi niBng to theo hngBng to theo ctKhong cch t hng 1 n trc Oxy10Khong cch t ct 1 n trc Oyx10000000000000000000000000000000000000000000000000000000xi0000000000yi1234567891001000000000002000000000003000000000004000000000005000000000006000000000007000000000008000000000009000000000001000000000000000000000020

9. Tnh ton bn mt cu.9.1. Tnh ton ni lc.9.1.1. Din tch tip xc ca bnh xe.- Din tch tip xc ca bnh xe c lp n hay lp kp c gi thit l hnh ch nht cb rng l 510mm v chiu di xc nh theo cng thc sau:- Xe thit k bn mt cuXexe ti- Ti trng trcPtrkN- Ti trng bnh xePkN- B rng vt bnh xebcm- Chiu di vt bnh xeLcm- Chiu dy lp ph mt cuhmccm- Chiu dy bn btng mt cutscm- B rng din tch phn b p lcbpbcm- Chiu di din tch phn b p lcLpbcm9.1.2. B rng tnh ton ca di bn.a. B rng tnh ton ca di bn trong.- Cng thc tnh ton+ Khi tnh mmen dngSW = 660 + 0,55.S (mm)+ Khi tnh mmen mSW = 1220 + 0,25.S (mm)(Vi S: L khong cch gia hai dm ch)- Chiu di tnh ton nhp bnScm- B rng di bn khi tnh mmen dngSWcm- B rng di bn khi tnh mmen mSWcmb. B rng tnh ton ca di bn hng.- Bn hng c coi nh mt di bn ngm mt u vo dm ch, c chiu rng tnh tonSW = 1140 + 0,833.X(Vi X: L khong cch t im t ti trong n gi bn)- Chiu di phn cnh hngdecm- B rng phn chn lan canbclccm- Khong cch t im t ti trng n gi bnXcm- B rng tnh ton ca di bn hngSWcm9.1.3. Xc nh ni lc bn trong.a. Ni lc bn chu mmen dng.- S tnh bn l s dm lin tc k trn cc gi cng l cc dm ch.- AH mmen dng ti mt ct gia nhpDin tch AH dngS+ =0.50Din tch AH mS- =-0.20Tng din tch AH:S =0.30- AH lc ct ti mt ct giDin tch AH dngS+ =1.30Din tch AH dngS- =-0.20Tng din tch AH:S =1.10- B rng tnh ton ca bnbscm- Chiu dy bntscm- Din tch mt ct ngangAscm2- Mmen qun tnhIscm4- Tnh ti di u ca bnDCtckN/m- Tnh ti di u ca lp ph mt cuDWtckN/m- Bng tnh ton ni lc do tnh tiCc i lngTi trnggSMMtckN.mMttkN.mSVVtckNVttkNTrng lng bn0.001.250.3000.0000.0001.1000.0000.000Lp ph mt cu0.001.50.3000.0000.0001.1000.0000.000- Bng tnh ton ni lc do hot tiCc i lngPkNgyMMtckN.mMttkN.myVVtckNVttkNBnh 1 ca xe 1Bnh 2 ca xe 1Bnh 1 ca xe 2Bnh 2 ca xe 2Tng- Tng hp ni lc bn chu mmen dngCc i lngTitrngMtckN.mMttkN.mVtckNVttkNDo trng lng bnDo lp ph mt cuDo hot tiTngb. Ni lc bn chu mmen m.- S tnh bn l s dm lin tc k trn cc gi cng l cc dm ch.- AH mmen m ti mt ct giDin tch AH dngS+ =0.20Din tch AH dngS- =-0.60Tng din tch AH:S =-0.40- AH lc ct ti mt ct giDin tch AH dngS+ =1.30Din tch AH dngS- =-0.20Tng din tch AH:S =1.10- B rng tnh ton ca bnbscm- Chiu dy bntscm- Din tch mt ct ngangAscm2- Mmen qun tnhIscm4- Tnh ti di u ca bnDCtckN/m- Tnh ti di u ca lp ph mt cuDWtckN/m- Bng tnh ton ni lc do tnh tiCc i lngTi trnggSMMtckN.mMttkN.mSVVtckNVttkNTrng lng bn0.00Lp ph mt cu0.00- Bng tnh ton ni lc do hot tiCc i lngPkNgyMMtckN.mMttkN.myVVtckNVttkNBnh 1 ca xe 1Bnh 2 ca xe 1Bnh 1 ca xe 2Bnh 2 ca xe 2Tng- Tng hp ni lc bn chu mmen mCc i lngTitrngMtckN.mMttkN.mVtckNVttkNDo trng lng bnDo lp ph mt cuDo hot tiTng9.1.4. Xc nh ni lc bn hng.- S tnh: Dm ngm cng xon- Chiu di tnh tonLm- B rng tnh ton ca bnbscm- Chiu dy bntscm- Din tch mt ct ngangAscm2- Mmen qun tnhIscm4- Tnh ti di u ca bnDCtckN/m- Tnh ti di u ca lp ph mt cuDWtckN/m- Trng lng lan canPlckN- Ti trng bnh xePxekN- Bng tnh ton ni lc do ti trngCc i lngTi trnggamMtckN.mMttkN.mVtckNVttkNTrng lng bn (kN/m)Lp ph mt cu (kN/m)Lan can + chn lan can (kN)Ti trng bnh xe (kN)Tng9.2. B tr ct thp chu lc theo phng ngang cu.9.2.1. Tnh ton v b tr ct thp chu mmen.a. B tr ct thp- Chn bn tnh tonBn2- Mmen tnh ton ln nhtMttmaxkN.m- B rng mt ctbcm- Chiu cao mt cthcm- Chiu cao b tr ct thp DLatpcm- Chn s b b trnbtb- Ct thp thng chu ko+ ng knh ct thpdcm16+ Din tch 1 thanhathcm2+ S li thp chu kob trnluoili+ S thanh thp trn 1 linthanhthanh+ Khong cch t li n mp bn btngascm+ Khong cch b tr@cm- Ct thp thng chu nn+ ng knh ct thpdcm16+ Din tch 1 thanhath'cm2+ S li thp chu nn b trnluoili+ S thanh thp trn 1 linthanhthanh+ Khong cch t li n mp bn btngas'cm+ Khong cch b tr@cm- H s sc khng unff90b. Kim ton kh nng chu lc mt ctK hiuMukN.mhcmbcmAgcm2atpcmdpcmfAsmmnth thanhnlli@AscmGii h phng trnh tm aGi tr0.000000000000A0.0K hiuascmdscmAscm2fAs'mmnth' thanhnl'li@As'cmas'cmds'cmAs'cm2B0Gi tr000.000000000.00C0K hiuacmccmfpscmAps cncm2ncnbnb trb@ApscmApscm2Delta0Gi tr0.0000.0000.00.0000.000000.00cn Delta0K hiuatpcmdpcmccmacmfpsMpadecmc/deMnkN.mMrkN.mMr//Mtta10Gi tr0.000.000.000.000.000.00.000.00.00.00a20Kt lun009.2.3. Tnh ton v b tr ct thp chu lc ct.a. B tr ct thpTn gi cc i lngK hiuChnGi trn vHsLc ct tnh tonVukNB rng mt ctbcmChiu cao mt cthcmC cn phi b tr ct ai hay khng ?Bc ct ai phi b trScmBc ct ai b trSbtcmng knh ct ai b trdcm12Din tch 1 nhnh ct aiathcm2S nhnh ct ai thit knnhnhnhS thanh ct ai chu ctnththanhGc nghing ca thp ai vi trc dcaH s ch kh nng b nt cho ca b tngbGc nghing ca ng sut nn choqH s sc khngj90b. Kim ton kh nng chu ctK hiuVukNbvcmdvcm0.5.j.Vc+Vp0,1.fc.bv.dvSbtcmf mmAvcncm2n nhnhAscm2Gi tr0.0000.00.000000.00000.00K hiun thanhAvbtcm2a b q VckNVskNVnkNVnkNVrkNGi tr00.000000.000.00.00.00.0Kt lun0.0009.3. B tr ct thp chu lc ca theo phng dc cu.- B rng tnh ton ca bn btng.bscm- Li ct thp pha trn+ ng knh ct thpdrtcm12+ Din tch 1 thanhartcm2+ S li thp chu kob trnluoili+ S thanh thp trn 1 linthanhthanh+ Din tch ct thp li trnArtcm28+ Khong cch t li n mp bn btngartcm+ Khong cch b tr@cm- Li ct thp pha di+ ng knh ct thpdrbcm12+ Din tch 1 thanharbcm2+ S li thp chu kob trnluoili+ S thanh thp trn 1 linthanhthanh+ Din tch ct thp li trnArbcm2+ Khong cch t li n mp bn btngarbcm+ Khong cch b tr@cm- Tng din tch ct thp bn btng.Arcm2- KC t trng tm ct thp bn n mp trn dm thp.Yrcm

10. Bng tra cc s liu tnh ton thit k1 - Bng tra c trng hnh hc ca thp hnh mt ct ch ISTTS hiuTrng lng 1mkGKch thc (mm)Fcm2THH vi trc x - xTHH vi trc y - yhbdtJxcm4Wxcm3rxcmSxcm3Jycm4Wycm3rycmJxycm4123456789101112131415161I109.46100554.57.21219839.74.062317.96.491.222.282I1211.5120644.87.314.735058.44.8833.727.98.721.382.883I1413.7140734.97.517.457281.75.7346.841.911.51.553.54I16151608157.820.28731096.5762.358.614.51.74.465I1818.4180905.18.123.412901437.4281.482.318.41.885.66I18a19.91801005.18.325.414301597.5189.811422.82.126.547I20212001005.28.426.818401848.2810411523.12.076.928I20a22.72001105.28.628.920302038.3711415528.22.327.949I22242201105.48.730.625502329.1313118728.62.278.610I22a25.82201205.48.932.827902549.1214320634.32.59.7711I2427.32401155.69.534.834602809.9716319834.52.3711.112I24a20.42401255.69.837.5380031710.117826041.62.6312.813I2731.527012569.840.2501037111.221026041.52.5413.614I27a33.9270135610.243.2580040711.3229337502.816.715I30036.53001356.510.246.5708047212.326833749.92.6917.416I300a39.23001456.510.749.9778051812.529243660.12.9520.317I33042.2330140711.253.8984059713.533941959.92.7928.818I36048.63601457.512.361.91338074314.742351671.12.8931.419I40056.140015581371.41893094716.354066685.93.0540.620I45065.24501608.614.28327450122018.26998071013.1254.721I50076.85001709.515.297.83929015702090510041223.2675.422I55089.855018010.316.511455150200022115013501503.4410023I60010460019011.117.813275450251023.9145017201813.613524I6501206502001219.2153101400312025.8180021702173.7718025I7001387002101320.8176134600384027.7223027302603.9424426I700a1587002101524202152700436027.5253032403094.013522 - Bng tra c trng hnh hc ca thp hnh mt ct ch [STTS hiuTrng lng 1mkGKch thc (mm)Fcm2THH vi trc x - xTHH vi trc y - yhbdtJxcm4Wxcm3rxcmSxcm3Jycm4Wycm3rycmzocmJxycm41[54.4850324.476.1622.89.11.925.595.612.750.9541.1612[6.55.965364.47.27.5148.6152.5498.73.681.081.2413[87.0580404.57.48.9889.422.43.1613.312.84.751.191.3114[108.59100464.57.610.917434.83.9920.420.46.461.371.441.965[1210.4120524.87.813.330450.64.7829.631.28.521.531.542.526[1412.3140584.98.115.649170.25.640.845.4111.71.673.197[14a13.3140624.98.71754577.85.6645.157.513.31.841.8748[1614.21606458.418.174793.46.4254.163.313.81.871.83.979[16a15.3160685919.58231036.4959.478.816.42.0124.9310[1816.3180705.18.720.710901217.2469.886172.041.944.8711[18a17.4180745.19.322.211901327.3276.1105202.182.13512[2018.4200765.2923.415201528.0787.811320.52.22.075.913[20a19.8200805.29.725.216701678.1595.913924.22.352.287.3614[2221220825.49.526.721101928.8911015125.122.217.4815[22a22.6220875.410.228.823302128.99121187302.552.469.3516[2424240905.61030.629002429.7313920831.62.62.429.617[24a25.8240955.610.732.931802659.8415125437.22.782.6711.8518[2727.727095610.535.2416030810.917826237.32.732.4711.9819[3031.83001006.51140.558103871222432743.62.842.5214.9820[3336.5330105711.746.5798048413.128141051.82.972.5919.2121[3641.93601107.512.653.41082060114.235051361.73.12.6825.122[4048.3400115813.661.51522076115.744464273.43.232.7532.413 - Bng tra c trng hnh hc ca thp hnh mt ct ch LSTTS hiuKch thcRmmFcm2Trng lng 1mTrc x - xTrc xo - xoTrc yo - yobdzo (cm)Jx (cm4)rx (cm)Jxo (cm4)rxo (cm)Jyo (cm4)ryo (cm)12345678910111213141L45x445453.482.731.266.631.3810.51.742.740.892L45x54554.293.371.38.031.3712.71.723.330.883L50x55055.54.83.771.4211.21.5317.81.924.630.984L56x556565.414.251.57161.7225.42.166.591.15L63x463474.963.91.6918.91.9529.92.457.811.256L63x56356.134.811.7423.11.9436.62.449.521.257L63x66367.285.721.7827.11.9342.92.4311.21.248L70x570586.865.381.931.92.1650.72.7213.21.399L70x67068.156.391.9437.62.1559.62.7115.51.3810L75x575597.395.82.0239.52.3162.62.9116.41.4911L75x67568.786.892.0646.62.373.92.919.31.4812L80x680699.387.362.19572.4790.43.1123.51.5813L80x780710.88.512.2365.32.451043.09271.5814L90x69061010.68.332.4382.12.781303.5341.7915L90x790712.39.642.4794.32.771503.493.891.7816L100x710071213.810.82.711313.082073.8854.21.9817L100x8100815.612.22.751473.072333.8760.91.9818L100x101001019.215.12.831793.052843.8474.11.9619L110x811081217.213.531983.393154.2881.82.1820L125x91259142217.33.43273.865204.861352.4821L125x101251024.319.13.453603.855714.841492.4722L140x914091424.719.43.784664.347395.471922.7923L140x101401027.321.53.825124.338145.462112.7824L160x10160101631.424.74.37744.9612296.253193.1925L160x111601237.429.44.399134.9414506.233763.1726L180x11180111638.830.54.8512165.619337.065003.5927L180x121801242.233.14.8913175.5920937.045403.5828L200x12200121847.1375.3718236.2228967.847493.9929L200x132001350.939.95.4219616.2131167.838053.9830L200x142001454.642.85.4620976.233337.819613.9731L200x16200166248.75.5423636.1737557.789703.9632L200x202002076.560.15.728716.1245607.7211823.9333L200x252002594.3745.8934666.0654947.6314383.9134L200x3020030115.387.66.074020663517.5516883.894. Cp thng thuyn ca sng5. Bng tra h s lnSTTCpBtt (m)Htt (m)STTS lnm1Ko TT00111.22I80102213II609330.854III507440.655IV406550.656V253.5660.657VI152.56. B rng xe chy trn cu7. Chiu cao lan can v g chn bnhSttBn vStthn v10. B rng g chn bnh1700cm120cmSttBgGi trn v2750cm225cm12x2550cm3800cm330cm22x3060cm4900cm435cm32x4080cm51200cm540cm42x50100cm61500cm650cm8. B rng l ngi i b9. B rng lan canSttBleGi trNgiSttBlcGi trn v12x0m0012x00cm22x1m20030022x2040cm32x1,5m30045032x2550cm42x2m40060042x3060cm52x2,5m50075052x4080cm62x50100cm10. Dm tnh ton11. Loi thp ch to dm:STTDmTn DmSTTK hiuTn thp1Dam 1Dm 11Cac bonCc bon2Dam 2Dm 22HK CDCHK thp CC3Dam 3Dm 33HK ToiHK thp ti nhng4Dam 4Dm 44HK Toi CDCHK thp ti nhng CC5Dam 5Dm 56Dam 6Dm 67Dam 7Dm 712. Bng cng thp13. H s xung kch14. Loi bulng thit kSTTCpfyfuSTT1+IMSTTK hiu125025040011.151M164 (A325M)234534545021.252M253 (A490M)3345W34548531.754485W48562056906907606690W69076015. Khong cch gia cc xe theo phng ngang cuKhong cch (m)Kh cu W (m)< 6677.28910< 10.5a0.50.50.50.60.50.50.50.5b0.01.21.71.81.71.71.71.7c0.00.00.50.60.50.50.50.5d0.00.00.00.01.02.03.03.516. Sn tng cng17. Neo lin hpSTTSTCTnSTTNeoTn neoTiu Kch thcQn1Donn1Neo memNeo mm- ng knh neo002KepKp2Neo cungNeo cng- S hiu thp lm neo00.003BaBa3Neo dinh muNeo inh m- ng knh thn neo00.004BonBn18. Bng gi tr lc ko ti thiu ca bulngSTTddloM164M253Ptn v116189111491kN22022142179142kN32224176221176kN42426205257205kN52730267334267kN63033326408326kN73639475595475kN18. H s iu kin b mtSTTLoi b mtks1ALoi A0.332BLoi B0.53CLoi C0.3319. Bn tnh tonSTTK hiuTn1Ban duongBn dng2Ban amBn m3Ban hangBn hng1. Bng tra cng thp DL ch to dmSTTLoi thpf1dfpyfpufpsfsafpjEpsn v120d53.921520167015036000.00197000Mpa224d54.701520167015036000.00197000Mpa3tao 12.70.921640182016388190.00197000Mpa4tao 15.21.401670186016748370.00197000Mpa5tao 15.71.501570177015937960.00197000Mpa6tao 17.81.951590177015937960.00197000Mpa8. S tao cp thit kSttn tao11233447512619737

MBD0006B869.unknown

MBD0006DA4F.unknown

MBD000E4853.unknown

MBD000EC00C.unknown

MBD001214D1.unknown

MBD00131701.unknown

MBD001336CC.unknown

MBD00131700.unknown

MBD00112D3A.unknown

MBD00112E86.unknown

MBD000EE996.unknown

MBD000E4857.unknown

MBD000E485A.unknown

MBD000E485B.unknown

MBD000E4859.unknown

MBD000E4855.unknown

MBD000E4856.unknown

MBD000E4854.unknown

MBD00080CDA.unknown

MBD000C226E.unknown

MBD000DE227.unknown

MBD000E23B5.unknown

MBD000E23B6.unknown

MBD000DE228.unknown

MBD000DE223.unknown

MBD000DE225.unknown

MBD000DE226.unknown

MBD000DE224.unknown

MBD000CE17D.unknown

MBD000DE222.unknown

MBD000DE221.unknown

MBD000C22E3.unknown

MBD000A2830.unknown

MBD000C21F2.unknown

MBD000A130B.unknown

MBD0008B81F.unknown

MBD0006DA54.unknown

MBD00076F6B.unknown

MBD000794A0.unknown

MBD0006F927.unknown

MBD0006DA51.unknown

MBD0006DA52.unknown

MBD0006DA50.unknown

MBD0006B881.unknown

MBD0006B88D.unknown

MBD0006B891.unknown

MBD0006DA4B.unknown

MBD0006DA4D.unknown

MBD0006DA4E.unknown

MBD0006DA4C.unknown

MBD0006C632.unknown

MBD0006DA49.unknown

MBD0006DA4A.unknown

MBD0006DA48.unknown

MBD0006DA47.unknown

MBD0006B893.unknown

MBD0006B88F.unknown

MBD0006B890.unknown

MBD0006B88E.unknown

MBD0006B885.unknown

MBD0006B889.unknown

MBD0006B88A.unknown

MBD0006B886.unknown

MBD0006B883.unknown

MBD0006B884.unknown

MBD0006B882.unknown

MBD0006B879.unknown

MBD0006B87D.unknown

MBD0006B87F.unknown

MBD0006B880.unknown

MBD0006B87E.unknown

MBD0006B87B.unknown

MBD0006B87C.unknown

MBD0006B87A.unknown

MBD0006B870.unknown

MBD0006B876.unknown

MBD0006B878.unknown

MBD0006B875.unknown

MBD0006B86B.unknown

MBD0006B86C.unknown

MBD0006B86A.unknown

MBD0004264B.unknown

MBD0006B85E.unknown

MBD0006B865.unknown

MBD0006B867.unknown

MBD0006B868.unknown

MBD0006B866.unknown

MBD0006B862.unknown

MBD0006B864.unknown

MBD0006B861.unknown

MBD00061D13.unknown

MBD00065ECC.unknown

MBD0006B856.unknown

MBD0006B85B.unknown

MBD0006B850.unknown

MBD0006B853.unknown

MBD0006B6E7.unknown

MBD00062D89.unknown

MBD000650DB.unknown

MBD00064A41.unknown

MBD00062A7B.unknown

MBD0004E202.unknown

MBD00051DEC.unknown

MBD00052932.unknown

MBD0004F658.unknown

MBD00051D1A.unknown

MBD0004EF46.unknown

MBD000475A8.unknown

MBD00049695.unknown

MBD00044041.unknown

MBD00046AEE.unknown

MBD0001FAA0.unknown

MBD0002DA0F.unknown

MBD0003EDA5.unknown

MBD000413F5.unknown

MBD00041E4E.unknown

MBD0003FC36.unknown

MBD00040EE0.unknown

MBD000401CB.unknown

MBD0003F56D.unknown

MBD0003F2F3.unknown

MBD000373C1.unknown

MBD0003B65F.unknown

MBD0003DC13.unknown

MBD0003BCE3.unknown

MBD0003B05A.unknown

MBD000374C9.unknown

MBD0002F7A2.unknown

MBD00034041.unknown

MBD00030C16.unknown

MBD0002E240.unknown

MBD0002A700.unknown

MBD0002AFF2.unknown

MBD0002C04E.unknown

MBD0002CAFE.unknown

MBD0002D9EE.unknown

MBD0002C8C8.unknown

MBD0002B0F4.unknown

MBD0002B1B1.unknown

MBD0002ABFE.unknown

MBD00025F98.unknown

MBD000280C4.unknown

MBD00029F26.unknown

MBD0002A5F1.unknown

MBD00029CA8.unknown

MBD00026DD2.unknown

MBD00026F45.unknown

MBD00027D0A.doc

35 kN

145 kN

145 kN

4300 mm

4300 mm ti 900mm mmm

600 mm ni chung

300mm mt tha ca mt cu

Ln thit k 3600 mm

MBD00026CA8.unknown

MBD000264F9.unknown

MBD00021AD5.unknown

MBD00023C5C.unknown

MBD0002401F.unknown

MBD0002377D.unknown

MBD000205EE.unknown

MBD00020E6E.unknown

MBD0001FF05.unknown

MBD00010D11.unknown

MBD0001C2FF.unknown

MBD0001CF28.unknown

MBD0001F485.unknown

MBD0001CF10.unknown

MBD0001504F.unknown

MBD0001B6B7.unknown

MBD0001C2EA.unknown

MBD00018A59.unknown

MBD00012B2A.unknown

MBD000131F0.unknown

MBD00013AAA.unknown

MBD00012EAD.unknown

MBD00012B9B.unknown

MBD00011E7E.unknown

MBD00011F18.unknown

MBD000119E9.unknown

MBD00011A1B.unknown

MBD0000A72A.unknown

MBD0000DBB3.unknown

MBD0000F468.unknown

MBD0000F547.unknown

MBD0000DEFC.unknown

MBD0000F409.unknown

MBD0000CD73.unknown

MBD0000CF07.unknown

MBD0000B6F6.unknown

MBD0000C859.unknown

MBD0000B6F4.unknown

MBD000077CB.unknown

MBD00007B12.unknown

MBD000054E8.unknown

MBD000067ED.unknown

MBD000065B9.unknown

MBD00002B96.unknown