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楊 勁， 蔣 凡， 劉 豐
（中鐵第四勘察設計院集團有限公司，武漢430063）[摘要] 以宿州東站主站房為研究對象，將Pushover分析方法引入到站房結構的抗震性能評估研究中。采用SAP2000程序，通過模態(tài)分析和反應譜分析研究該站房結構的動力抗震特性，發(fā)現結構主振型模態(tài)為Y向平動，在Y向水平地震作用下結構地震響應較大。采用Pushover分析方法對站房結構的抗震性能進行研究，發(fā)現該站房結構超強系數大于2，滿足相應的彈塑性要求。相關結論和建議對中小站房的結構分析有參考意義。
[關鍵詞] 鐵路客站；Pushover; 模態(tài)分析；抗震性能
中圖分類號：TU352.11 文獻標識碼：A 文章編號：1002-848X(2012) S2-0145-04Study 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
