Anti-Seismic Analysis of Shuangjiangkou Rock-Fill Dam Concerning Viscous-Spring Artificial Boundary

Abstract eng:
The anti-seismic reliability of high rock-fill dam is directly related to the operation safety of the dam built on the deep overburden layer. As an example, traditional fixed boundary with massless foundation and viscous-spring artificial boundary concerning radiation damping of foundation are separately applied in the dynamic response analysis of Shuangjiangkou core wall rock-fill dam. The latter can simulate the practical boundary conditions better. The calculation results show that the dynamic responses of the dam are small, which can satisfy the stability request. Meanwhile, the viscous-spring artificial boundary method decreases the dynamic response results of acceleration by 15%~30% comparing with which in the traditional fixed boundary with foundation of no weight, which should be taken into account in the dynamic response analysis with regard to the rock-fill dam.

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