面板堆石坝模型动力破坏试验与数值仿真分析

通过类比试验方法 ,观察、比较了振动台上面板堆石坝和普通堆石坝的破坏过程及其破坏性态 ,分析了面板对坝坡稳定性的影响。由于堆石颗粒之间以及堆石体与面板之间的位移不连续 ,采用非连续变形分析方法对两种模型坝进行了数值模拟 ,结果表明 :数值模拟的结果与振动台模型试验的结果很相似 ,从而从模型试验和数值仿真分析两个方面探讨了地震时面板堆石坝的破坏过程及其破坏形态 ,对面板坝的抗震设计提供了依据。

Dynamic failure test and numerical simulation of model concrete-faced rockfill dam

In this paper, the dynamic failure phenomena of two kinds of model dams, i.e., homogeneous rock fill dams and faced rock fill dams, are investigated by large scale shaking table tests. Numerical simulations of model dams are performed by Discontinuous Deformation Analysis that takes the displacement discontinuity of filled materials and contact between facing slab and dam body into consideration. The results obtained from numerical simulations are consistent with those from the corresponding dynamic experiments. Based on the results from the experiments and numerical simulations, some beneficial conclusions are obtained.