龙滩碾压混凝土坝渗流场对应力场的影响  

Influence of Seepage Field on Stress Field in Longtan Roller Compacted Concrete Dam

作　　者：柴军瑞[1] 

机构地区：[1]四川大学水电学院

出　　处：《红水河》2001年第2期47-50,共4页Hongshui River

基　　金：陕西省自然科学研究计划项目! (99C2 2 ) ;"九五"国家科技攻关项目! (96 -2 2 0 -0 1-0 1-0 2 (3) )

摘　　要：结合龙滩水电站工程 ,分析碾压混凝土重力坝坝体及碾压层 (缝 )面渗流的特点 ,提出碾压混凝土坝渗流的渗透静水压力和渗透动水压力及其对坝体应力的影响机理 ,采用有限元数值方法计算出渗流场影响下的龙滩坝应力场分布。可以看出 ,由于渗透静水压力和渗透动水压力的作用 ,使坝体各应力分量最大值增大 ,也使坝踵处应力集中现象加剧。The characteristic of seepage through dam body and layers in Longtan roller compacted concrete dam(RCCD)is analyzed, the hydrostatic and hydrodynamic seepage pressures in RCCD and their effects on stress in the dam are also presented. From the seepage_influenced stress distribution in the dam computed by finite element method, it can be shown that the maximum values of stress components increase and the stress concentration in dam heel is more obvious because of the action of hydrostatic and hydrodynamic seepage pressures.

关 键 词：碾压混凝土 渗透静水压力 应力场 龙滩工程 渗流 

分 类 号：TV642.2[水利工程—水利水电工程] TV139.1