Seismic isolation analysis of friction pendulum bearing on coupling system for high-speed train and simply supported beam bridge

被引：0
|
作者：
Guo W. [1 ]
Hong X. [1 ]
Wang Z. [1 ]
机构：
[1] School of Civil Engineering, Central South University, Changsha
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2020年 / 50卷 / 02期
关键词：
Friction pendulum bearing(FPB); High-speed train and multi-span simply supported beam bridge coupling system; Seismic action; Seismic isolation; Virtual rigid body;
D O I：
10.3969/j.issn.1001-0505.2020.02.009
中图分类号：
学科分类号：
摘要：
To study the seismic isolation effect of friction pendulum bearing (FPB) on the dynamic response of the coupling system of high-speed trains and simply supported beam bridges under earthquake, based on ANSYS and SIMPACK software platforms, a three-dimensional finite element model for a coupling system in a high-speed train and a multi-span simply supported beam bridge was established. In the model, the FPB was simulated by 104# force element. The track irregularities and the seismic force were applied to the model as the excitation. The seismic isolation of FPB in the coupling system of the high-speed train and a simply supported beam bridge under the seismic action was studied. The results show that under the action of El Centro seismic wave, the dynamic response of the train-bridge system increases with the increase of the train speed, the seismic intensity and the pier height. When the seismic intensity is less than 0.12g, FPB can reduce the dynamic response of the train-bridge system except the lateral acceleration of the pier top. The higher the speed and the pier, the greater the seismic isolation of FPB. When the seismic intensity is more than 0.12g, FPB can increase the dynamic response of the train-bridge system. In the seismic isolation design of the simply supported beam bridge on high-speed railway, the pier height should be less than 16 m, and the parameters of FPB should be selected according to the bridges. © 2020, Editorial Department of Journal of Southeast University. All right reserved.
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页码：267 / 273
页数：6
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