Response analysis of curved bridge with unseating failure control system under near-fault ground motions

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Zuo, Ye^1 ; Sun, Guangjun^1 ; Li, Hongjing^1

College of Civil Engineering, Nanjing Tech University, Nanjing

211800, China^1

关键词: Curved bridge;    Elastic-plastic behavior;    Failure controls;    In-depth analysis;    Near fault ground motion;    Nonlinear time history methods;    Research results;    Response analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/2/022065/pdf
DOI  :  10.1088/1755-1315/108/2/022065

来源: IOP

【 摘 要 】

Under the action of near-fault ground motions, curved bridges are prone to pounding, local damage of bridge components and even unseating. A multi-scale fine finite element model of a typical three-span curved bridge is established by considering the elastic-plastic behavior of piers and pounding effect of adjacent girders. The nonlinear time-history method is used to study the seismic response of the curved bridge equipped with unseating failure control system under the action of near-fault ground motion. An in-depth analysis is carried to evaluate the control effect of the proposed unseating failure control system. The research results indicate that under the near-fault ground motion, the seismic response of the curved bridge is strong. The unseating failure control system perform effectively to reduce the pounding force of the adjacent girders and the probability of deck unseating.