人民长江Issue(7)：48-51,65,5.
堆石坝心墙内增设加固防渗墙的结构特性研究
Study on structural characteristics of supplemented concrete cutoff wall in core wall of high rockfill dam
摘要
Abstract
When seepage is found in the core wall of a high rockfill dam, a new modified design is proposed to supplement a concrete cutoff wall in the core wall for reinforcement. The 3D FEM calculation was performed for the dam and cutoff wall to sim-ulate the stress and deformation characteristics as well as deformation compatibility between cutoff wall and the adjacent clay un-der reinforcement construction and water impoundment process. The results show that deformation of the cutoff wall and dam body is mainly caused by the rise of water level, a certain horizontal deflection of cutoff wall along river flow direction is found, never-theless, stress of the dam body is not influenced obviously. The middle part of cutoff wall along dam axis is the weakest link and its bending capacity should be improved. The relative displacement between cutoff wall and adjacent clay is within the permissible range.关键词
心墙加固/塑性混凝土/防渗墙/接触面单元/高心墙堆石坝Key words
seepage control reinforcement/plastic concrete/cutoff wall/contact element/high core rockfill dam分类
建筑与水利引用本文复制引用
邵磊,余挺,贾宇峰,迟世春..堆石坝心墙内增设加固防渗墙的结构特性研究[J].人民长江,2014,(7):48-51,65,5.基金项目
国家重点基础研究发展计划“973”项目(2013CB036400) （2013CB036400）
国家自然科学基金项目(50979014,50979014) （50979014,50979014）
