Research on the random seismic response analysis for multi- and large-span structures to multi-support excitations

被引:0
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作者
Bo Zhao
Yuanqing Wang
Zhihua Chen
Yongjiu Shi
Yang Jiang
Yihong Wang
机构
[1] Tianjin University,School of Civil Engineering
[2] Tsinghua University,Key Laboratory of Structural Engineering and Vibration of Education Ministry, Department of Civil Engineering
关键词
random seismic response; multi-support excitations; large-span structures; wave-passage frequency; coherence function;
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摘要
The pseudo excitation method (PEM) has been improved into a more practical form, on which the analytic formulae of seismic response power spectral density (PSD) of simplified large-span structural models have been derived. The analytic formulae and numerical computing results of seismic response PSD have been derived to study the mechanism of multi-support excitation effects, such as the wave-passage effect and incoherence effect, for the seismic response of multiand large-span structures. By using a multi-span truss as an example, the influence of multi-support excitation effects on the seismic response of such structures is studied.
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页码:527 / 538
页数:11
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