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On the Influence of Seismically Induced Residual Forces on Bridge Abutment Design

by Raj Siddharthan, Univ of Nevada, Reno, United States,
Mahmoud El-Gamal, Univ of Nevada, Reno, United States,



Document Type: Proceeding Paper

Part of: Engineering Mechanics

Abstract:

The seismic design of bridge abutments depend on the anticipated movement of the abutment during the design earthquake. For seat-type abutments in which the backfill resistance can be mobilized, a displacement based approach is desirable. Such an approach should include the sliding as well as the titling modes of deformation. The approach presented here also includes the cyclically-induced increase in horizontal stress. The case study reported here reveals that the increase in lateral stress is not a major design concern.

Subject Headings: Bridge abutments | Seismic design | Bridge design | Case studies | Load and resistance factor design | Lateral stress | Structural design

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