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

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2008

Without internal affiliation

  • Author: Konakli, Katerina

    Unknown

  • Author: Der Kiureghian, A.

    University of California, Berkeley

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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
StatePublished

Conference

ConferenceProceedings of 14th World Conference on Earthquake Engineering
Number14
CityBeijing, China
Period01/01/08 → …
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