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浙江大学学报(工学版)
浙江大学学报(工学版)  2018, Vol. 52 Issue (8): 1575-1582    DOI: 10.3785/j.issn.1008-973X.2018.08.018
土木与水利工程     
多点激励下高烈度区接触网系统地震响应分析
徐军1, 李英民1, 杨旭尧2, 胡晓平1
1. 重庆大学 土木工程学院, 重庆 400045;
2. 中铁电气化局宝鸡器材有限公司, 陕西 宝鸡 721000
Seismic response of overhead catenary system in high-intensity seismic zones under multi-support excitations
XU Jun1, LI Ying-min1, YANG Xu-yao2, HU Xiao-ping1
1. School of Civil Engineering, Chongqing University, Chongqing 400045, China;
2. Baoji Line Parts Co. Ltd of China Railway Electrification Bureau Group, Baoji 721000, China
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摘要：

以某高烈度区电气化铁路接触网系统为研究对象，建立考虑材料非线性和几何非线性特性的三维柱-线有限元模型.采用SMIQKE-II软件合成与规范反应谱相吻合的空间相关地震动时程，基于相对位移法进行接触网系统在一致激励、相干激励、行波激励和多点激励下的非线性时程分析，对比研究系统关键部件在不同地震激励模式下的响应规律.结果表明，多点激励明显放大接触网系统的地震响应，对接触线横向位移响应的放大最为显著，对支柱底部应力的放大相对较小；接触网系统地震响应的放大程度主要取决于激励方式与视波速的大小；为了得到接触网系统各关键部件的最不利地震响应，应该综合考虑多点激励的影响和场地条件，以选择合适的视波速进行抗震分析.
Abstract:

A three-dimensional finite element pole-wire system model with material and geometric nonlinearity was developed to analyze the overhead catenary system in high-intensity seismic zones. Spatially correlated ground motion time histories compatible with the normalized response spectum were generated by SIMQKE-ll software. Relative displacement-based nonlinear time history analyses of the overhead catenary system were conducted under uniform excitation, coherence excitation, traveling wave excitation and multi-support seismic excitations. Seismic response characteristics of the key parts in overhead catenary system under different excitation methods were analyzed and compared. Results show that the seismic responses of overhead catenary system are obviously amplified by multi-support excitations. The influence of multi-support excitations on the amplification of transverse displacement response of contact wires is the most significant, while the influence on stress at pole bottom sections is relatively small. The amplification of structural responses depend largely on the excitation method and traveling wave velocity. To get the most critical seismic response for all the key parts of overhead catenary system, multi-support excitations should be considered with proper site conditions and traveling wave velocities in the seismic analysis of overhead catenary systems.
收稿日期: 2017-06-19 出版日期: 2018-08-23
CLC:  U225  
基金资助:

中国中铁股份有限公司科技开发计划资助项目（2015-重大-20）
通讯作者: 李英民,男,教授.orcid.org/0000-0003-0079-4130.     E-mail: liyingmin@cqu.edu.cn
作者简介: 徐军(1986-),男,博士生,从事结构抗震研究.orcid.org/0000-0002-7823-2851.E-mail:junxusc@gmail.com
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引用本文:

徐军, 李英民, 杨旭尧, 胡晓平. 多点激励下高烈度区接触网系统地震响应分析[J]. 浙江大学学报(工学版), 2018, 52(8): 1575-1582.

XU Jun, LI Ying-min, YANG Xu-yao, HU Xiao-ping. Seismic response of overhead catenary system in high-intensity seismic zones under multi-support excitations. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(8): 1575-1582.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2018.08.018    或    http://www.zjujournals.com/eng/CN/Y2018/V52/I8/1575

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