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Indexed by:期刊论文

Date of Publication:2009-04-01

Journal:SOIL DYNAMICS AND EARTHQUAKE ENGINEERING

Included Journals:SCIE、EI、Scopus

Volume:29

Issue:4

Page Number:620-629

ISSN No.:0267-7261

Key Words:Random vibration; Earthquake; Wave passage effect; Incoherence effect; Site-response effect

Abstract:On the basis of the pseudo-excitation method (PEM), a random vibration methodology is formulated for the seismic analysis of multi-supported structures subjected to spatially varying ground motions. The ground motion spatial variability consists of the wave passage, incoherence and site-response effects. Advantages of this method are that less computation effort is required and that the cross-correlations both between normal modes and between excitations are automatically included. Random seismic responses of a realistic long-span bridge due to the wave passage, incoherence and site-response effects are extensively investigated. It is shown that all these effects have significant influence on the seismic response of the structure. (c) 2008 Elsevier Ltd. All rights reserved.