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劉  楓1，杜義欣1，趙鵬飛1，潘國(guó)華2，陶  勇2，湯榮偉1，顏  峰1
（1 中國(guó)建筑科學(xué)研究院，北京100013； 2 中鐵第四勘察設(shè)計(jì)院集團(tuán)有限公司，武漢430063）

[摘要]  武漢火車站支撐結(jié)構(gòu)東西向長(zhǎng)度為258m(屋蓋長(zhǎng)度約300m)，南北向長(zhǎng)度為476m，南北向超長(zhǎng)。對(duì)武漢站采用時(shí)程分析法，進(jìn)行了考慮行波效應(yīng)的多點(diǎn)輸入地震反應(yīng)分析。對(duì)多點(diǎn)輸入與單點(diǎn)輸入情況下的基底總剪力、扭轉(zhuǎn)效應(yīng)以及重要構(gòu)件內(nèi)力均進(jìn)行了比較，討論了不同視波速度對(duì)分析結(jié)果的影響。針對(duì)不同類型構(gòu)件，給出了考慮多點(diǎn)輸入影響的地震作用效應(yīng)調(diào)整系數(shù)，并對(duì)這些構(gòu)件進(jìn)行了在多點(diǎn)輸入地震組合工況下的截面驗(yàn)算，計(jì)算結(jié)果表明全部構(gòu)件均滿足規(guī)范要求，不必要因多點(diǎn)輸入而采取特殊的構(gòu)造措施。
[關(guān)鍵詞]  多點(diǎn)輸入；地震反應(yīng)：時(shí)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