Effect of modal truncation in multiple support response spectrum analysis of bridges

Katerina Konakli, A. Der Kiureghian

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The question of how many modes to include in the dynamic analyses of multiply-supported structures subjected to spatially varying ground motions is considered in this paper. The issue is investigated within the framework of the Multiple Support Response Spectrum (MSRS) method developed by Der Kiureghian and Neuenhofer (1992). The original MSRS rule is extended to approximately account for the contribution of the truncated highfrequency modes. A bridge structure designed by the California Department of Transportation (Caltrans) is used as an example application. The modal contributions to various response quantities are examined in conjunction with measures of the participating modal mass and the improvement achieved with the extended MSRS rule.
Original languageEnglish
Title of host publicationProceedings of 14th World Conference on Earthquake Engineering
Publication date2008
Publication statusPublished - 2008
Externally publishedYes
Event14th World Conference on Earthquake Engineering - Beijing, China
Duration: 12 Oct 200817 Oct 2008
Conference number: 14

Conference

Conference14th World Conference on Earthquake Engineering
Number14
Country/TerritoryChina
CityBeijing
Period12/10/200817/10/2008

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