Open Collections

Seismic response of retaining structures

University of British Columbia

A simple method of analyses which allows both the earthquake induced forces and displacements of retaining structures to be computed is presented. The method considers both the weight of the wall and the flexibility and strength of both the backfill and foundation soil. A single degree of freedom perfect elastic-plastic model is used and the equation of motion is integrated to yield the time histories of wall force and displacement. The method is applied to a gravity retaining wall structure subjected to three different acceleration time histories. The results indicate that: (1) the dynamic displacements will be small for walls having the usual factor of safety against sliding > 1.5; (2) the maximum dynamic force on the wall increases as the factor of safety against sliding increases and can be greater than the Mononobe-Okabe value when sliding is prevented from occurring.

Text

2010-03-26

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http://hdl.handle.net/2429/22793

Civil Engineering

University of British Columbia

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