Investigation of Liquefaction Mechanism and Displacement in Buried Sand Layers

One of the most important reasons for damages during earthquakes is the liquefaction of loose and saturated sand soils. However, in many regions with proper soil specifications, the large settlements have been observed in the ground surface. Loose sand layers buried in fine soils are one of the cases which may result in these problems and as a weak point during earthquake can cause this phenomenon. In this paper, the behaviour of buried sand layer affected by cyclic loading and its deformation during liquefaction has been studied and investigated using FDM. Then, the results have been compared with those of other investigators. Based on comparisons, the deformation of liquefied layer resulted in current study is in a good agreement with experimental methods proposed by “Seed-Tokimatsu” and “Ishihara-Yoshimine”.