Shake Table 2-D Models of a Concrete Gravity Dam For Computer Code Validation

One of the most famous and studied cases of dams subjected to earthquake loading is the Koyna Dam in India. In this study, a 2-dimensional model of Koyna Dam at 1/50 scale was used on a shake table to simulate effects and serve as data for nonlinear computer model calibration. A new concrete mix was designed for the nonlinear similitude modeling. This new mix provided the correct kinematic failure of concrete at scale. Two models were tested to failure: one with an initial shrinkage crack and one monolith. Reservoir effects were not modeled. The results of both models are discussed and compared. The ability to model nonlinear effects is discussed.