Overall Overturning and Sliding Stability Analysis of Girder Bridges Under Torsion-Slippage Coupling Constraints

TONG Shanghang; XIAO Rucheng; ZHUANG Dongli; SUN Bin

doi:10.21656/1000-0887.440138

Volume 44 Issue 12

Dec. 2023

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Article Navigation > Applied Mathematics and Mechanics > 2023 > 44(12): 1441-1452

TONG Shanghang, XIAO Rucheng, ZHUANG Dongli, SUN Bin. Overall Overturning and Sliding Stability Analysis of Girder Bridges Under Torsion-Slippage Coupling Constraints[J]. Applied Mathematics and Mechanics, 2023, 44(12): 1441-1452. doi: 10.21656/1000-0887.440138

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Overall Overturning and Sliding Stability Analysis of Girder Bridges Under Torsion-Slippage Coupling Constraints

doi: 10.21656/1000-0887.440138

Department of Bridge Engineering, Tongji University, Shanghai 200092, P.R.China

Received Date: 2023-05-09
Rev Recd Date: 2023-07-30
Publish Date: 2023-12-01

Abstract

Abstract

To analyze the overall overturning and sliding stability of girder bridges with bearing failures, the stiffness matrix of the 7-DOF curved beam element was derived, and the constraint equations for the bearing detachment and slippage failures were presented. The finite element equation with the constraint equations was solved with the Newton-Raphson method. A process of judging the instability modes of girder bridges according to the bearing failures was established, and the corresponding program was compiled. The accuracy of the 7-DOF curved beam element was verified through calculation of a simply supported statically indeterminate curved beam. A curved ramp bridge collapse accident was analyzed with the proposed method. The results show that, the proposed method could more accurately simulate the equilibrium state of the girder bridge under various bearing failure conditions, in comparison with the traditional bar-system finite element model.
- curved beam element,
- constraint equation,
- torsion-slippage coupling effect,
- overturn,
- slip

(Contributed by XIAO Rucheng, M. AMM Editorial Board)

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References(18)

References

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