考慮地震行波效應(yīng)的145m跨三心圓網(wǎng)殼結(jié)構(gòu)時(shí)程分析
張淵1, 趙海艷2, 寧志剛1，劉巍1
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（1 北京首鋼國(guó)際工程技術(shù)有限公司， 北京 100043； 2 北京農(nóng)業(yè)職業(yè)學(xué)院， 北京 102442)
［摘要］介紹空間結(jié)構(gòu)的動(dòng)力學(xué)平衡方程。通過對(duì)某145m跨三心圓網(wǎng)殼結(jié)構(gòu)進(jìn)行有限元建模分析，比較其在一致激勵(lì)下輸入加速度時(shí)程與位移時(shí)程的計(jì)算結(jié)果，并最終采用位移時(shí)程分析法作為考慮行波效應(yīng)的計(jì)算方法。通過位移時(shí)程法分析了結(jié)構(gòu)在不同地震波、不同波速下的響應(yīng)。結(jié)果表明：在大跨度結(jié)構(gòu)的抗震分析中，為得到桿件正確的內(nèi)力計(jì)算結(jié)果，對(duì)其進(jìn)行考慮行波效應(yīng)的時(shí)程分析是必要的。［關(guān)鍵詞］空間結(jié)構(gòu); 行波效應(yīng); 三心圓網(wǎng)殼; 時(shí)程分析中圖分類號(hào)：TU393.3 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2015)21-0052-06
Time-history analysis of 145m-span three centered cylindrical latticed shell structure under seismic wave propagation effectZhang Yuan1, Zhao Haiyan2, Ning Zhigang1, Liu Wei1(1 Beijing Shougang International Engineering Technology Co., Ltd., Beijing 100043, China; 2 Beijing Agricultural Vocational College, Beijing 102442, China)Abstract: The dynamic equilibrium equation of space structure was introduced. By the finite element modeling analysis of a 145m-span three centered cylindrical latticed shell structure, the calculation results with inputs of acceleration and displacement time history under the uniform excitation were compared and finally the displacement time-history analysis method was adopted as the calculation method considering the seismic wave propagation effect. The seismic responses of the structure were analyzed under different seismic waves and different velocities using displacement time-history method. The results show that it is necessary to carry out the time-history analysis considering the seismic wave propagation effect in the seismic analysis of large-span structure to get the right internal force calculation results of the members.Keywords: space structure; seismic wave propagation effect; three centered cylindrical latticed shell; time-history analysis
作者簡(jiǎn)介：張淵，碩士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:zhangyuan_bj@126.com。
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