刘  枫1，杜义欣1，赵鹏飞1，潘国华2，陶  勇2，汤荣伟1，颜  峰1
（1 中国建筑科学研究院，北京100013； 2 中铁第四勘察设计院集团有限公司，武汉430063）

[摘要]  武汉火车站支撑结构东西向长度为258m(屋盖长度约300m)，南北向长度为476m，南北向超长。对武汉站采用时程分析法，进行了考虑行波效应的多点输入地震反应分析。对多点输入与单点输入情况下的基底总剪力、扭转效应以及重要构件内力均进行了比较，讨论了不同视波速度对分析结果的影响。针对不同类型构件，给出了考虑多点输入影响的地震作用效应调整系数，并对这些构件进行了在多点输入地震组合工况下的截面验算，计算结果表明全部构件均满足规范要求，不必要因多点输入而采取特殊的构造措施。
[关键词]  多点输入；地震反应：时程分析

    Time-history analysis of Wuhan railvay station under multi-support seismic excitation
    Liu Fengl ,Du Yixinl ,Zhao Pengjeil ,Pan Guohua2 ,Tao Yong2 ,Tang Rongweil ,Yan Fengl
    (1  China Academy of Building Research ,Beijing 100013 ,China;
    2 China Railway Siyuan Survey and Desigp Croup Co. /td. ,Wuhan 430063 ,China)

Abstract: The supporting structure of Wuhan railway station is super long in south to north direction, with dimension of 258m from east to west, and 476m from south to north. The time-history seismic analysis considering traveling effect is carried out. The base shear, torsion effect and internal force of important members between multi-support excitation and single-support excitation are compared. The corresponding analysis results under different traveling speed are discussed. The adjustive coefficients considering multi-support excitation based on different structure members are provided.  the section check is made to these members in multi-support excitation earthquake load combinations. All members satity the requirement of code through the calculation mentioned above, no need to adopt extra measures because of multi-support excitation.
Keywords:  multi- support excitation;  seismic; time-history analysis