Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2009-04-01

Journal: SOIL DYNAMICS AND EARTHQUAKE ENGINEERING

Included Journals: Scopus、EI、SCIE

Volume: 29

Issue: 4

Page Number: 620-629

ISSN: 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.