Civil Engineering Association

Design Problems In Soil Liquifaction

A Report on research sponsored by National Science Foundation
Report no : UCB/EERC-86/02

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UCB/EERC-86/02, Earthquake Engineering Research Center, University of California, Berkeley, 1986-02, 39 pages (475/S41/1986)

An attempt is made to clarify some aspects of the problems encountered in evaluating the stability of embankments under conditions where a potential for soil liquefaction exists. It is suggested that the most prudent method of minimizing the hazards associated with liquefaction-induced sliding and deformations is to plan new construction or devise remedial measures in such a way that high pore water pressures cannot build up in the potentially liquefiable soil. When large deformations can possibly be tolerated, however, it may be adequate to simply ensure stability against major sliding after liquefaction has occurred. Evaluating this possibility requires a knowledge of the residual strength of the liquefied soil. Available data is summarized and plotted in chart form for evaluating residual strengths for this purpose. Finally, the general principles of a design philosophy for handling liquefaction problems at the present state of knowledge are presented.

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