- 摘 要
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（1 上海建筑設(shè)計研究院有限公司，上海建筑空間結(jié)構(gòu)工程技術(shù)研究中心， 上海 200041;2 上海市建筑科學(xué)研究院（集團）有限公司， 上海市工程結(jié)構(gòu)安全重點實驗室，上海 200032）
［摘要］地震波的傳播是隨時間和空間的不同而變化的，對于超長結(jié)構(gòu)，地震行波效應(yīng)的影響不能忽略。采用MIDAS/Gen對上海虹橋搜候（SOHO）超長結(jié)構(gòu)進(jìn)行地震時程分析，分別采用一致輸入和行波輸入，比較分析不同波速對結(jié)構(gòu)的影響，分析研究地震行波效應(yīng)下結(jié)構(gòu)端部和中部梁柱內(nèi)力、樓層位移特征，并與一致激勵下的地震反應(yīng)進(jìn)行比較分析，得到行波效應(yīng)對超長結(jié)構(gòu)端部及底部樓層構(gòu)件內(nèi)力影響明顯，構(gòu)件軸力最大可增大2倍以上。
［關(guān)鍵詞］上海虹橋搜候(SOHO)； 超長結(jié)構(gòu)； 水平地震； 一致激勵； 行波效應(yīng)； 時程分析
中圖分類號：TU398-7文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)03-0017-04
Time-history analysis of horizontal seismic traveling wave excitation for Hongqiao SOHO project in Shanghai
Li Ruixiong1, Jiang Qi2, Li Yaming1, Jia Shuizhong1
(1 Shanghai Institute of Architectural Design & Research, Shanghai 200041, China; 2 Shanghai Key Laboratory of Engineering Structure Safety，Shanghai Research Institute of Building Sciences Group Co., Ltd.，Shanghai 200032, China)
Abstract:The seismic wave dissemination changes along with different time and space, so seismic traveling-wave effect should not be ignored for super-long structure. The general finite element software MIDAS/Gen was applied to analyze time-history responses for super-long structure of Hongqiao SOHO project in Shanghai under the uniform excitation input and traveling-wave excitation input to compare the influences of different traveling speeds on the structure. The characteristics of the internal force and displacement of the beams and the columns that locate in the middle and end of the structure were researched under seismic traveling-wave effect, and the results were compared with the seismic responses under the uniform excitation. It is concluded that travelling-wave effect has obvious effect on the internal forces of components that locate at end of super-long structure and bottom story, and axial forces of components can increase more than 2 times than origin.
Keywords:Hongqiao SOHO project in Shanghai; super-long structure; horizontal earthquake; uniform excitation; traveling-wave effect; time-history analysis
*華東建筑集團股份有限公司（15-1類-0037-結(jié)），上海建筑設(shè)計研究院有限公司（院-15-1類-0006-結(jié)）。
作者簡介：李瑞雄，博士，高級工程師，Email: ruixiong_li@126.com。
