Mohammadhosein Aminfar - Faculty of Civil Engineering, University of Tabriz, Tabriz ۵۱۶۶۶۱۶۴۷۱, Iran
Amin Jalali - Faculty of Civil Engineering, University of Tabriz, Tabriz ۵۱۶۶۶۱۶۴۷۱, Iran
Ali Aminfar - Faculty of Civil Engineering, University of Tabriz, Tabriz ۵۱۶۶۶۱۶۴۷۱, Iran

An important issue that’s the reason of damages and collapses during earthquake is liquefaction of loose and saturated sands. After reduction of soil strength, piles will behave like unsupported columns. So it seems that behavior of these piles and their analysis method isn't clear and suitable. For a better view, a pile group is modeled using FLAC3D software that is connected to each other with a cap. Soil profile has three layers that middle layer is liquefiable and other two layers isn’t. In this research generated bending moment in pile group in different values for liquefied layer’s thickness and pile length has investigated. Before analysis of model, sensitivity analyses is carried out to achieve accurate results in less computing time.

Soil Liquefaction, Pile Groups, Dynamic Analysis, Bending moment