考虑地震行波效应的145m跨三心圆网壳结构时程分析
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（1 北京首钢国际工程技术有限公司， 北京 100043； 2 北京农业职业学院， 北京 102442)
［摘要］介绍空间结构的动力学平衡方程。通过对某145m跨三心圆网壳结构进行有限元建模分析，比较其在一致激励下输入加速度时程与位移时程的计算结果，并最终采用位移时程分析法作为考虑行波效应的计算方法。通过位移时程法分析了结构在不同地震波、不同波速下的响应。结果表明：在大跨度结构的抗震分析中，为得到杆件正确的内力计算结果，对其进行考虑行波效应的时程分析是必要的。［关键词］空间结构; 行波效应; 三心圆网壳; 时程分析中图分类号：TU393.3 文献标识码：A 文章编号：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
作者简介：张渊，硕士，高级工程师，一级注册结构工程师，Email:zhangyuan_bj@126.com。
