大跨空间网格结构在多维多点输入下的地震响应分析
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摘要
同时考虑地震动2个水平和1个竖直共3个平动分量,并考虑了地震动场的空间相关性,用时程分析法对大跨空间结构进行了多维多点输入和多维一致输入下的响应分析。考查了2种输入方法下结构杆件内力的分布特点,并对其进行了对比分析,在多维多点输入和多维一致输入下结构响应的差异、视波速及结构跨度对这种差异的影响方面得出了一些结论。
In this paper, the dynamic behavior of long-span space lattice structures subjected to multi-dimensional and multi-support excitation, as well as to multi-dimensional and simple-support excitation are thoroughly analyzed based upon time history method. The characteristic of the distribution of element forces under these two kinds of earthquake motions is studied and some differences are reached. Furthermore, the effects of the structural span and the apparent wave velocity on these differences are also suggested.
In this paper, the dynamic behavior of long-span space lattice structures subjected to multi-dimensional and multi-support excitation, as well as to multi-dimensional and simple-support excitation are thoroughly analyzed based upon time history method. The characteristic of the distribution of element forces under these two kinds of earthquake motions is studied and some differences are reached. Furthermore, the effects of the structural span and the apparent wave velocity on these differences are also suggested.
引文
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[5]刘先明.大跨度空间网格结构多点输入反应谱理论的研究和应用[D].南京:东南大学,2003.LIUXian ming.Theoreticresearchandapplicationofresponsespectrumoflongspanspacereticulatedundermultiplesupportexcitations[D].Nanjing:SoutheastUniversity,2003.
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