不同加载顺序下某高心墙堆石坝静动力计算  

Static and Dynamic Analysis of High Earth Core Rock-Fill Dam with Two Different Orders of Applying Loads

作　　者：周磊[1,2] 陆静[1,2] 张楠[1,2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水工结构研究所,江苏南京210098

出　　处：《人民黄河》2013年第5期96-98,共3页Yellow River

基　　金：中央高校基本科研业务费专项(2010B01414);江苏高校优势学科建设工程资助项目(水利工程)(YS11001)

摘　　要：某拟建高心墙堆石坝考虑完全填筑后蓄水和边填筑边蓄水两种加载顺序,采用有限元方法对其进行静动力分析,结果表明:加载顺序对动力计算的影响很小,对静力计算的影响较大。在边填筑边蓄水的加载顺序下,坝体的竖向沉降和应力值较大,心墙较大的中主应力能够减小水力劈裂的可能性,同时这种加载顺序也可提高心墙和反滤层抗液化的能力。This paper analyzed the static and dynamic settlement and stress of a proposed high earth core rock-fill dam by the finite element meth- od, considering two different orders of applying loads of completely filling after impoundment and turns of filling and impoundment. The results show that the two different orders of applying loads have little impact on the dynamic analysis, but have great impact on the static analysis which mainly reflected in vertical settlement and stress values. The vertical settlement and stress values are larger when filling and impoundment take turns. The larger medium principal stress of core-wall can reduce the possibility of hydraulic fracturing. This order of applying loads also can im- prove the liquefaction resistant ability of core-wall and inverted filter.

关 键 词：加载顺序 沉降 应力 静动力分析 高心墙堆石坝 

分 类 号：TV641.41[水利工程—水利水电工程]