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结构受多点非平稳随机地震激励的响应
引用本文:林家浩,李建俊,张文首.结构受多点非平稳随机地震激励的响应[J].力学学报,1995,27(5):567-576.
作者姓名:林家浩  李建俊  张文首
作者单位:大连理工大学工业装备结构分析国家重点实验室,116024
基金项目:国家自然科学基金,国家教委博士点基金
摘    要:对结构所受的地震作用既考虑了地面运动的非平稳性,又计及了行波效应及激励点之间相干性的部分损失,给出了计算结构响应时变功率谱的虚拟激励算法。该法不仅计及了振型间的耦合项及激励间的耦合项,而且简便高效。

关 键 词:非平稳  结构动力学  随机地震激励

STRUCTURAL RESPONSES TO NONSTATIONARY MULTI-POINT RANDOM SEISMIC EXCITATIONS
Lin Jiahao,Li Jianjun,Zhang Wenshou.STRUCTURAL RESPONSES TO NONSTATIONARY MULTI-POINT RANDOM SEISMIC EXCITATIONS[J].chinese journal of theoretical and applied mechanics,1995,27(5):567-576.
Authors:Lin Jiahao  Li Jianjun  Zhang Wenshou
Abstract:A highly efficient, convenient and accurate method,i.e。the pseudo-excitationmethod for analyzing the nonstationary responses of structures subjected to multi-piontevolutionary random seismic excitations is established.Both the traveiling wave effect cansedby limited earthquake wave speed and the arbitrary coherency between the structural groundjoints are taken into account.The cross-correlation items between the participant modes andbetween the excitations have been both included,so that this is a complete ...
Keywords:nonstationary  random  arbitrary coherency  earthquake
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