| 行波效应对铁路大跨长联连续刚构桥地震反应的影响 |
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| 引用本文： | 陈兴冲,吴海燕,张永亮.行波效应对铁路大跨长联连续刚构桥地震反应的影响[J].世界地震工程,2010,26(1). |
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| 作者姓名： | 陈兴冲 吴海燕 张永亮 |
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| 作者单位： | 兰州交通大学,土木工程学院,甘肃,兰州,730070 |
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| 基金项目： | 铁道部科技研究开发计划项目 |
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| 摘 要： | 介绍了多点激励下结构运动方程的求解方法。以某大跨度铁路连续刚构桥为工程背景,用有限元软件MIDAS建立了结构有限元模型,选取地震波波速为主要参数,对某铁路大跨长联连续刚构桥进行了考虑行波效应的时程反应分析,并与一致激励下的结果进行了对比。结果表明:考虑行波效应后,跨中截面的弯矩增大,而墩底截面的弯矩减小。在梁部结构的抗震设计中应考虑行波效应的影响。
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| 关 键 词： | 连续刚构桥 行波效应 时程反应分析 地震反应 |
The effect of traveling waves on seismic response of railway long-span and long-conjunction continuous rigid-frame bridges under multi-support excitations |
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| CHEN Xingchong,WU Haiyan,ZHANG Yongliang.The effect of traveling waves on seismic response of railway long-span and long-conjunction continuous rigid-frame bridges under multi-support excitations[J].World Information On Earthquake Engineering,2010,26(1). |
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| Authors: | CHEN Xingchong WU Haiyan ZHANG Yongliang |
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| Institution: | CHEN Xingchong,WU Haiyan,ZHANG Yongliang(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | Solution of motion equations of a structure under multi-support excitations is introduced in this paper.Taking a long-span continuous rigid-frame railway bridge as an example,considering earthquake wave speed as main parameter,time history analysis of railway long-span and long-conjunction continuous rigid-frame bridge under traveling wave excitation is performed,and the comparative analysis of the results under the traveling wave and uniform excitation is made.The results show that the moment at the mid sp... |
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| Keywords: | continuous rigid-frame bridge traveling wave effect time history analysis seismic response |
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