Abstract:The paper presents a review of the research developments of fluidization behavior of postliquefied soils and a discussion on the phenomenon and mechanism of fluidization.Then,two constitutive models adopted in liquefaction analysis,the pseudoplastic and the Bingham models,are introduced.Also,a further study is made on hydrodynamical characteristics of liquefied soils to modify the fluidmodels on the basis of the engineering practice.Finally,a solidliquidair multiphase flow model is proposed to be developed in a future unified analysis of liquefied soils.