Lateral spreads have been extensively found near waterfronts after major earthquakes as a consequence of liquefied saturated sandy soils, and they posed significant detrimental effects on widely-spreading urban lifelines. This paper proposes a displacement-based procedure for liquefaction hazard zonation by using a newly-developed probabilistic model of liquefaction-induced lateral displacements exceeding a pre-defined threshold. The probabilistic function was formulated from a regression analysis on case histories of liquefaction by employing probit modeling. The procedure for generating the liquefaction hazard map with this proposed model was demonstrated through a selected case study. The comparison between the predicted probability and the field measurements indicates that the model can provide reasonable prediction particularly in cases of large deformations. The displacement-based procedure is promising, providing probability map that highlights the regions where relatively large deformations have been observed.
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