Numerical Dynamic Analysis of Sonnateh Dam Body Located on an Active Fault

The design of dam body for an earthfill dam is the most important analysis in dam study. The Sonnateh dam is located on an active fault with measured deflections. The dam body analyses are performed based on two methods in order to reach a suitable slope for upstream and downstream of dam body. The upstream and downstream slope of dam body is calculated based on optimal analyses of dam body in different load conditions with linear and nonlinear determination. The two dimensional analysis of dam body with MCL and MDL is performed by GEO-SLOPE program. This analysis was a preliminary determination of dam body dimensions. The amount of safety factor and steady displacement of dam body is calculated during the earthquake. Also, the three dimensional analysis of fault movement is performed using ANSYS finite element based program. This analysis indicated the displacement of dam body which has to compare with allowable displacement of clay core. Based on this analysis, the safety factor of dam body is determined.