小浪底斜心墙堆石坝坝顶纵向裂缝数值仿真分析  

Numerical Simulation Analysis of Crest Longitudinal Cracks of Xiaolangdi Sloping Core Rockfill Dam

作　　者：屈楚杰 朱晟[1] 罗坤 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]南京市水利规划设计院有限责任公司,江苏南京210006

出　　处：《水电能源科学》2015年第10期50-53,共4页Water Resources and Power

摘　　要：为了探究高心墙堆石坝产生坝顶纵向裂缝的原因,初步分析了小浪底工程产生坝顶裂缝的诱因,并依据变形倾度法原理,采用三维非线性有限元数值仿真算法,对产生坝顶纵向裂缝的三种可能诱导因素(蓄水作用、上游坝壳料的浸水湿化变形和筑坝料的流变变形)进行了计算分析。结果表明,蓄水作用、上游坝壳料的浸水湿化变形是产生坝顶纵向裂缝的主要原因,而筑坝料流变变形的长期发展对坝顶后期变形不利。In order to explore the factors which lead to the crest of longitudinal cracks,this paper initially analyzed the incentives that caused the crest cracks of Xiaolangdi Dam.It was found that water storage,wetting deformation and rheological deformation were the factors that lead to the cracks.And then the paper further studied the factors that influence the crest of longitudinal crack using three-dimensional nonlinear finite element simulation combined with the deformation gradient method.The results show that the water storage and wetting deformation of the upstream dam shell material are the main factors;besides the long-term development of rheological deformation is detrimental to the late deformation of the dam crest.

关 键 词：高心墙堆石坝 坝顶纵向裂缝 变形倾度法 有限元 蓄水作用 湿化变形 流变变形 

分 类 号：TV641.1[水利工程—水利水电工程]