Experimental investigation on interaction ofconcrete gravity dam-reservoir-foundation on shaking table

Interaction of concrete gravity dam with foundation and reservoir is one of the most important subjects in analyzing seismic behavior of dams. This paper presents an experimental study on seismic behavior analysis of dams considering the Interaction among concrete gravity dam, foundation and reservoir. Herein,a scaled dam has been constructed with scale factor of 1:30 (model: prototype)and modeled with foundation and reservoir on shaking table. Using different sensors on critical points of the model and also inside the concrete dam, the interaction behaviorhas been investigatedduring a specific applied earthquake. In this regard, multiple parameters have been evaluated during the earthquake, including displacements, hydrodynamic pressurein upstream, variation of acceleration/pore-water-pressure from bottom layers of foundation to free surface andfinally, variation of the soil dynamic responses beneath the dam.The results of experimental model are useable for verifying numerical models

Keywords:

Dam foundation reservoir Interaction , Concrete gravity dam , shakingtable tests , Dynamic responses , Hydrodynamic pressure