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THE PSEUDO-EXCITATION METHOD OF LONG-SPAN SPACE LATTICED STRUCTURES UNDER MULTIPLE SUPPORT EXCITATION
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摘要: 采用虚拟激励法分析大跨度空间网格结构的随机地震响应，从结构节点位移响应方差和加速度功率谱两个方面考察了一致输入与非一致输入下结构响应的差异，得出了一些重要结论。虚拟激励法是一种高效且精确的方法，对于分析大跨度网壳、网架这样复杂结构在多点输入下的地震响应是很合适的。Abstract: The pseudo-excitation method is applied to the random seismic response analysis of long-span space latticed structures.The difference of the structure response is studied generally under multiple support excitation and simple support excitation from two aspects of the displacements response variance and acceleration power spectrum.Some important conclusions are gained.On the other hand,it shows the pseudo-excitation method is efficient and precise and is applicable to the random seismic response analysis of the complicated structure under multiple support excitation,such as long-span space latticed structure.
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