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Indexed by:期刊论文

Date of Publication:2022-06-29

Journal:大连理工大学学报

Affiliation of Author(s):运载工程与力学学部

Issue:4

Page Number:480-486

ISSN No.:1000-8608

Abstract:A comprehensive investigation of the variation of the random seismic responses due to the wave passage effect is performed based on the pseudo excitation method (PEM). For a single-degree-of-freedom with two supports, the power spectrum density functions of the internal forces are derived, and the means of maximum response values are investigated due to different apparent wave velocities. In addition, the influences of the responses of the quasi-static and the relative dynamic components are also discussed. It is pointed out that the internal forces vary significantly with the variation of the apparent wave velocities, especially for structures with larger span. The relative dynamic component has important effects on the dynamic responses of structures with lower natural frequencies. For structures with larger natural frequencies, the quasi-static component has important influence on the seismic responses. Moreover, random seismic responses of a suspension bridge are analyzed with different apparent wave velocities. It is also shown that the wave passage effect has great influence on the seismic responses.

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