- 摘 要
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(中國建筑西南設(shè)計(jì)研究院有限公司，成都 610081)
［摘要］ 采用時程分析方法對成都雙流國際機(jī)場T2航站樓結(jié)構(gòu)進(jìn)行了多點(diǎn)多維地震反應(yīng)分析，地震波波速從266m/s變化到533m/s，并與一致輸入結(jié)果比較可知：考慮行波效應(yīng)后，鋼結(jié)構(gòu)部分的多數(shù)桿件內(nèi)力小于一致輸入的，且行波效應(yīng)影響系數(shù)多數(shù)小于1.2；沿地震波傳播方向上的底層框架柱內(nèi)力多數(shù)增大，而垂直于地震波傳播方向上的柱內(nèi)力多數(shù)減?。恢С袖摴暗匿撝S力行波效應(yīng)影響系數(shù)基本上小于1；支承鋼拱的框架柱列行波效應(yīng)影響系數(shù)呈現(xiàn)出兩端大、中間小的規(guī)律；多點(diǎn)輸入下的基底剪力小于一致輸入下的，為多點(diǎn)輸入下結(jié)構(gòu)中各構(gòu)件振動不同步所致，疊加為總地震力時往往相互抵消。
［關(guān)鍵詞］ 航站樓； 多點(diǎn)多維； 行波效應(yīng)； 時程分析Time-history analysis on the hall structure in Chengdu Shuangliu International Airport T2 Terminal
Building under multi-support and multi-dimension seismic excitation
Zhou Dingsong, Xiao Kejian, Chen Zhiqiang
(China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610081, China)
Abstract:Time history seismic analysis considering multi-support and multi-dimension effect for Chengdu Shuangliu Airport T2 Terminal Building was carried out. Travelling wave velocity varied from 266m/s to 533m/s. The results from multi-support and multi-dimension seismic analysis had been compared with the results from single-support and multi-dimension analysis, and the significant differences of these results were shown. It was found that the internal force of steel members became smaller when travelling wave effect was considered. The travelling wave effect coefficients of steel members were almost less than 1.2. The internal force along the seismic wave propagation direction of the first floor RC frame column would increase, but the internal force of the first floor RC frame column which was perpendicular to wave direction would decrease. The travelling wave effect coefficients of the steel columns which support the steel arches were almost less than 1.0. The travelling wave effect coefficients of the side column became bigger from the middle to two sides. Base shear force caused by multi-support excitation was less than that caused by uniform excitation. The reason is that the vibration of structure members is not synchronized when multi-support excitation occurs, so that superposition of the total base shear tends to mutually counterbalance.
Keywords:airport terminal building; multi-support and multi-dimension; travelling wave effect; time-history seismic analysis
作者簡介：周定松，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：zhoudingsong@163.com。參考文獻(xiàn)
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