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Influence of strain localization on reliability based design of bridge abutments using pseudo-dynamic method

Basha, Munwar B and Sivakumar Babu, GL (2011) Influence of strain localization on reliability based design of bridge abutments using pseudo-dynamic method. In: Proceedings of Advances in Geotechnical Engineering, March 13-16, 2011, Dallas, Texas, United States.

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Official URL: http://dx.doi.org/10.1061/41165(397)308

Abstract

The paper focuses on reliability based design of bridge abutments when subjected to earthquake loading. Planar failure surface has been used in conjunction with pseudo-dynamic approach to compute the seismic active earth pressures on the bridge abutment. The proposed pseudo dynamic method, considers the effects of strain localization in the backfill soil and associated post-peak reduction in the shear resistance from peak to residual values along a previously formed failure plane, phase difference in shear waves and soil amplification along with the horizontal seismic accelerations. Four modes of stability viz. sliding, overturning, eccentricity and bearing capacity of the foundation soil are considered for the reliability analysis. The influence of various design parameters on the seismic reliability indices against four modes of failure is presented, following the suggestions of Japan Road Association, Caltrans Bridge Design Specifications and U.S Department of the Army.

Item Type: Conference Proceedings
Additional Information: Copyright of this article belongs to American Society of Civil Engineers.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 21 May 2013 11:28
Last Modified: 21 May 2013 11:28
URI: http://eprints.iisc.ernet.in/id/eprint/46364

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