杨  劲，  蒋  凡，  刘  丰
（中铁第四勘察设计院集团有限公司，武汉430063）

[摘要] 以宿州东站主站房为研究对象，将Pushover分析方法引入到站房结构的抗震性能评估研究中。采用SAP2000程序，通过模态分析和反应谱分析研究该站房结构的动力抗震特性，发现结构主振型模态为Y向平动，在Y向水平地震作用下结构地震响应较大。采用Pushover分析方法对站房结构的抗震性能进行研究，发现该站房结构超强系数大于2，满足相应的弹塑性要求。相关结论和建议对中小站房的结构分析有参考意义。
[关键词] 铁路客站；Pushover; 模态分析；抗震性能
中图分类号：TU352.11    文献标识码：A  文章编号：1002-848X(2012) S2-0145-04

Study on seismic performance of station main building based on the Pushover method
Yang Jing, Jiang Fan, Liu Feng
( China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China)

Abstract: The seismic performance of the Suzhou East stations' main building structure was studied based on the Pushover analysis method.  The dynamic characteristics of the station structure were obtained by modal analysis and response spectrum method with the SAP2000 program.  It is found that the first mode vibration state is parallel with Y axis, and it has a big seismic response in Y-direction horizontal earthquake.  The seismic performance of the station structure is analyzed by the Pushover analysis approach. It is concluded that over-strength factor of such structure is more than 2 and meet the corresponding elastic-plastic requirements. This is a crucial guideline for the structure analysis of actual projects.
Keywords: railway station; Pushover; dynamic characteristic; seismic performance