Numerical investigation of variable uplift distribution at the level of landslide-induced acceleration at the concrete dam body crack position

The study of seismic behavior of concrete dams has been considered by many researchers due to the importance of dam safety during earthquakes. Because the destruction of these structures by earthquakes can have adverse economic and social effects. On the other hand, predicting the behavior of concrete dams during an earthquake is one of the most complex and difficult issues in structural dynamics. In the present study, the effects of compressive force (uplift) and its distribution as a variable on the nonlinear dynamic response of a weighted concrete dam under earthquakes near and far from the fault have been studied using a numerical model. The results showed that the waves generated by the earthquake in the reservoir of the dam prevent the return of the dam to the reservoir and at the same time help to move downstream of the dam, therefore the lateral displacement of the dam is generally inclined downstream. The results also showed that the cavity water pressure fluctuates very strongly during the earthquake but with a small amplitude, therefore it has little effect on lateral and vertical displacements of the structure.