On-line Journal of the IASS

Response Analysis of National Stadium Under Spatially Varying Earthquake Ground Motions

< Table of Contents for Vol. 47 (2006) No. 3 December n. 152

• Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
• ISSN: (Electronic Version) 1996-9015, (Print Version) 1028-365X
• Issue: Vol. 47 (2006) No. 3 December n. 152
• Pages: 261-270
• Title: Response Analysis of National Stadium Under Spatially Varying Earthquake Ground Motions
• Author(s): W. H. Liu, Q. S. Yang and Y. J. Tian
• Keywords: multi-support seismic analysis, phase-difference spectrum, time-history response, power spectrum

Abstract
The responses of uniform support excitation and multiple support excitations of the National Stadium for 2008 Olympic games in Beijing are studied, in which the uniform excitation and spatially varying excitations in two horizontal and vertical directions are considered, respectively. The time history analysis method is applied, and spatially varying ground motion time histories are simulated. It is found that the uniform ground motion cannot represent the critical cases for the response of National Stadium structure. Multiple support excitations, which is a more realistic assumption, may result in larger displacements and forces in some cases or smaller displacements and forces in others.

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