水库高土石坝地震动力反应特性试验研究  

Experimental Study on Seismic Dynamic Response Characteristics of High Earth-rockfill Dams

作　　者：刘小婧 LIU Xiaojing(Zhidan County Water Bureau Groundwater Supervision and Monitoring Management Station,Zhidan 717500,China)

机构地区：[1]志丹县水务局地下水监督监测管理站,陕西志丹717500

出　　处：《河南水利与南水北调》2022年第10期87-89,共3页Henan Water Resources & South-to-North Water Diversion

摘　　要：高地震烈度区建设高坝通常采用心墙堆石坝和面板堆石坝,大型土石坝振动台模型试验可以为土石坝的结构-动力特性的研究提供一定的数据参考。基于大型振动台模型对某高土石坝的地震动力特性进行研究分析,其结果表明:所构建的三种不同高土石坝模型的抗震性能都较为良好;水库蓄水与否影响坝体动力特性,且水库蓄水量对坝体动力特性参数的影响规律有所不同;面板堆石坝防护效果更为明显,有效抑制了上坝坡的破坏。Core rockfill dam and face rockfill dam are usually used to construct high dams in high seismic intensity areas.The shaking table model test of large-scale earth-rockfill dam can provide certain data reference for the study of the structure-dynamic characteristics of earth-rockfill dam. The seismic dynamic characteristics of a high earth-rockfill dam are studied and analyzed in this paper based on large-scale shaking table model. The results suggest three points. First, the seismic performance of the three different high earth-rockfill dam models is relatively good. Second, the impoundment of the reservoir affects the dynamic characteristics of the dam body, and the influence law of the reservoir water storage on the dynamic parameters of the dam body is different. Third, the protection effect of face rockfill dam is more obvious, which can effectively restrain the damage of the upper dam slope.

关 键 词：土石坝 振动台模型试验 动力特性 地震反应 

分 类 号：TV6[水利工程—水利水电工程]