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ע⣺ՓڡBWW2004,44(3):421-424l
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Nonlinear stochastic static analysis of long span suspension bridge

SHI Lei LIU Chun-Cheng ZHANG Zhe DU Peng-Juan
(Department of civil engineering, Dalian university of technology ,Dalian 116024)


Abstract: Geometrical nonlinear behaviors are very significant in long span suspension bridges, and the uncertainties of material, physical dimension etc greatly influence the structural response of suspension bridge. Beam element with small EI is used for the certain analysis of suspension bridge. Based on the Response Surface approach, the non-linearity of suspension bridge is researched in this paper. Finally, the mid-span deflection of a long span suspension bridge under vertical live load is analyzed when the elastic module of cable and hangers are assumed to be random correlated variables. Numerical results show that the randomness has a significant effect on the mid-span deflection.
Key words: Suspension bridge; Response Surface approach; Geometric non-linearity; Random

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