Design of High Strength Bolt Joint for Steel Bridge





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(Controlling Flange)Pcu
(Noncontrolling Flange)Pncu
1681kgf/cm20.75Fb =1417.5kgf/cm2 N 3.2 60 1.6819.91332.5
1280.6 ⁄P π 4⁄ D 2 9.913 t σ 1.681 3.2 60.0179.21.801 /
60 1.6 2 261.6 179.2
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2 32mm600mmA709 Gr.50 3500kgf/cm 1890kgf/cm
1681kgf/cm20.75Fb =1417.5kgf/cm2 N 3.2 60 1.6819.91332.5 60 3.2 6 2.53.2 192.0 48.0144.01.681 3.2 60.0144.02.241 ⁄
38mm
N 192.0 1.7019.91332.9
fv0.5Fv Fw=0.5 (fv+Fv) fv
Fv
Fw Dw tw e
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1 2000mm 25mm A709 Gr.50 3500kgf/cm 1890kgf/cm 1190kgf/cm
A325 7/8” H.S.B. 2132.66 127.21 Iy=0.2268m4
2132.66 1.00.2268 940.3 kgf/cm σ Max 12 , 0.75Max 1415.2 , 1417.5 1417.5 kg f cm⁄
V 127.21 ∗ 1417.5940.3 191.77

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e 8.52 32 7.5 15.5191.77 15.5 2972.44 t cm 1417.5 16 2.5 200 23625 t cm 26597.44 P ∑ 2.917 P ∑ 7.992 P P P 8.508 9.913 ok
P
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Ph [t]
Pbt [t]
3 75 222187.5 11.75 90.0 7.50 2253.30 25878.30 3.430 10.482 11.029 4 100 299531.3 15.50 90.0 11.25 2972.44 26597.44 2.917 7.992 8.507 5 125 379687.5 19.25 90.0 15.00 3691.57 27316.57 2.613 6.475 6.983 6 150 463359.4 23.00 90.0 18.75 4410.71 28035.71 2.413 5.445 5.956 7 175 551250.0 26.75 90.0 22.50 5129.85 28754.85 2.269 4.695 5.214


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2 2000mm 25mmA709 Gr.50 3500kgf/cm 1890kgf/cm 1190kgf/cm
A325 7/8” H.S.B.

16P 1826 1575 /2 13.75 2.56 9742.4 kgf 9.913 26P 4707.8 kgf9.913 36P 4284.3 kgf9.913
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3 2000mm 25mmA709 Gr.50 3500kgf/cm 1890kgf/cm 1190kgf/cm
A325 7/8” H.S.B.

1.190 2.5 200.0 595.0 1.890 112 2.5 200.0 / 100 31500.0 c
∑ 595.0175 47416.25 22.5551250.0 5.335 ∑ 47416.25 90551250.0 7.741 5.335 7.741
9.401 9.913
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% 8 100
9 98 10 96 11 94 12 92
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(2015)
3()
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2000mm 25mmA709 Gr.50 3500kgf/cm 1890kgf/cm 1190kgf/cm
A325 7/8” H.S.B.0.9 1.190 2.5 200.0 0.9 595.0 = 535.5 t0.75 1.890 112 2.5 200.0 100⁄ 0.75 31500.0 c 23625
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(1)


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