Investigation of the coupling dynamic response between bidirectional seismic isolated railway bridge and train load

被引：2
|
作者：
Yu F. [1 ]
Zhou F. [1 ,2 ]
Wenliuhan H. [2 ]
机构：
[1] Shenzhen Graduate School, Harbin Institute of Technology
[2] Earthquake Engineering Research and Test Center, Guangzhou University
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2010年 / 40卷 / 03期
关键词：
Bidirectional seismic isolation; Coupled oscillations; Lead rubber bearing; Railway bridge; Train-bridge system;
D O I：
10.3969/j.issn.1001-0505.2010.03.025
中图分类号：
学科分类号：
摘要：
A three-dimension FEM (finite element method) model of a three-span seismic isolated bridge is established using the ANSYS program. And a coupling analysis program is written by Matlab to analyze the interaction performance of a railway and train load bidirectional seismic isolated train-bridge system. The results show that as the isolated period of the bridge (IPB) increases, the transverse displacement of the girder increases remarkably but the torsion drift and the vertical displacement changes little. When the IPB is great, the attenuation effect of the rubber bearing's damping on transverse displacement is obvious, and the horizontal wave of the train and the side rolling displacement become severe. The damping ratio of the seismic isolation bearing can reduce the horizontal wave and side rolling displacement. The study also proves that the IPB and the damping ratio have little effect on the wave displacement, the up-and-down displacement and the nodding displacement of the train.
引用
收藏
页码：565 / 569
页数：4
相关论文
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