Seismic Performance Assessment of Simply Supported and Continuous Multispan Concrete Girder Highway Bridges
Publication: Journal of Bridge Engineering
Volume 12, Issue 5
Abstract
Seismic evaluations of typical concrete girder bridges are conducted for both a multispan simply supported and a multispan continuous girder bridge common to the Central and Southeastern United States. These evaluations are performed for an approximate hazard level of 2% in by performing nonlinear time history analyses on three-dimensional analytical models. The results show significant vulnerabilities in the reinforced concrete columns, the abutments, and also in unseating of the girders. In general, the longitudinal loading of the bridges results in larger demands than the transverse loading. However, the simply supported bridge sustains bearing deformations in the transverse direction which are on the same order as their longitudinal response. These results suggest that both longitudinal and transverse loading are significant and should be considered when performing seismic hazard analyses of these bridges.
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Acknowledgments
This study has been supported by the Earthquake Engineering Research Center program of the National Science Foundation under Award No. NSFEEC-9701785 (Mid-America Earthquake Center).
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 12 • Issue 5 • September 2007
Pages: 611 - 620
Copyright
© 2007 ASCE.
History
Received: Jun 29, 2005
Accepted: Sep 22, 2006
Published online: Sep 1, 2007
Published in print: Sep 2007
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