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A Procedure for Predicting Seismic Deformation of Earth Structures

by Hendra Jitno, Univ of British Columbia, Vancouver, BC, Canada,
Peter M. Byrne, Univ of British Columbia, Vancouver, BC, Canada,



Document Type: Proceeding Paper

Part of: Vertical and Horizontal Deformations of Foundations and Embankments

Abstract:

This paper presents an analysis procedure for predicting the earthquake induced displacements of earth structures. The procedure is an extension of the simple Newmark method from a single-degree-of-freedom rigid plastic to a multi-degree-of-freedom flexible system using post-liquefaction stress-strain relations and energy concepts. The method has been validated by comparison with field experience during earthquakes, including the response of the San Fernando Dams. The method is described and applied here to La Marquesa Dam in Chile, which liquefied during the earthquake of 1985. The results show that the predicted displacements agree well with the observed displacements in terms of both the magnitude and the pattern of displacements.

Subject Headings: Soil liquefaction | Displacement (mechanics) | Stress strain relations | Embankment dams | Earthquakes | Structural analysis | Degrees of freedom | Chile | South America

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