Analysis for Seismic Responses of Continuous Girder Bridge under Strong Near-Fault Earthquake Level

Xin Le Li; Hui Juan Dou; Dan Shen

doi:10.4028/www.scientific.net/AMM.353-356.1901

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 353-356Analysis for Seismic Responses of Continuous...

Analysis for Seismic Responses of Continuous Girder Bridge under Strong Near-Fault Earthquake Level

Abstract:

In order to explore the safety performance of continuous structure bridge near fault zone, a typical three spans continuous girder bridge of highway was selected to study the structural seismic response. The finite element model of whole bridge considered the force characteristics of bearing and pile-soil interaction was constructed. Typical near-fault records were selected from the important earthquake events. Several artificial waves characterized with the soil type in bridge site were simulated and used for dynamic analysis. The seismic performance of continuous bridge was studied by nonlinear dynamic time-history method. Research results indicate that, especially large amplitude pulse effect of near-fault records for strong near-fault earthquake, will significantly enhance the seismic response of continuous girder bridge under the second seismic level (EL2) leads to structure to collapse. The fact that the near-fault effect is not considered in China existing highway bridge seismic design code will increase the destructive risk of structure.

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Periodical:

Applied Mechanics and Materials (Volumes 353-356)

Pages:

1901-1906

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.353-356.1901

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Online since:

August 2013

Authors:

Xin Le Li*, Hui Juan Dou, Dan Shen

Keywords:

Continuous Girder Bridge, Dynamic Time-History Method, Near-Fault Ground Motions, Seismic Response

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* - Corresponding Author

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