Numerical analysis of liquefaction-induced lateral spreading phenomenon and investigation of the effect of ground slope and liquefiable soil thickness on lateral displacement

摘要

Lateral spreading of liquefied granular soils induces large displacements and because of that it is one of the destructive phenomena which causes great damages to the buildings, roads, pipelines, and piles. Maximum ground displacement and it's variation with depth are the most necessary parameters for seismic design of earthworks and foundations, so this paper focuses upon these parameters. In this paper after validating numerical simulation with experimental observation, the verified model is used for parametric study. For parametric study the ground surface inclination and thickness of the liquefiable soil are selected as variable parameters and their effects on maximum lateral displacements which occurs at the ground surface are investigated. This study shows that ground surface inclination is a very important parameter on lateral displacement, its increase leads to increase in the amount of lateral displacement; however the amount of normalized lateral displacement is independent of the value of ground surface inclination.