Simplified procedure for estimating liquefaction-induced settlement

Abstract

A simplified procedure for estimating liquefaction-induced settlement is proposed within the conventional liquefaction analysis framework. Closed-form solutions and approximate methods for computing volumetric, shear-induced and ejecta-related settlements for level ground and shallow foundations are presented. The proposed approach aims to facilitate engineering assessment of liquefaction-induced settlement by placing greater focus on the: (a) engineering interpretation of computed settlements; (b) holistic evaluation of the response over a wide range of ground motion intensities; (c) identification of key variables that most significantly influence the settlement response; and (d) consideration of uncertainties in the estimates. The procedure is applicable to all types of liquefiable deposits and has accuracy consistent with the conventional simplified liquefaction analysis methodology.