RESEARCH ON COUPLED VIBRATION OF TRAIN-BRIDGE SYSTEM OF STEEL TRUSS BRIDGE WITH SEISMIC EFFECT

被引:0
|
作者
Deng, Z. M. [1 ]
Dai, H. M. [1 ]
Guo, X. R. [1 ]
机构
[1] Cent S Univ, Dept Civil & Architectural Engn, Changsha 410075, Hunan, Peoples R China
关键词
steel-truss girder; earthquake acceleration; drift phenomenon; coupling vibration; limit element model; dynamic response;
D O I
暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The drift phenomenon of displacement time history caused by the direct integration of acceleration time history is eliminated, by the introduction of the least squares method to correct and fit the seismic acceleration, considering the seismic excitation, the coupling vibration equation of train-bridge system is build up. Focused on a steel truss girder, a limit element model of train-bridge dynamic system is established to research the effect of coupling vibration of train-bridge system on earthquake response. The results show that the dynamic response of the bridge depends primarily on the size of the earthquake. Specifically speaking, the transverse seismic wave has important impact on the transverse dynamic response of the vehicles and bridges, and the influence of the vertical seismic wave to the derailment coefficient, the load decrement rate of wheel weight and the vertical acceleration is significant.
引用
收藏
页码:1288 / 1293
页数:6
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