摘要
基于多孔连续介质模型,从理论上探讨了作用在地基上的水荷载作为渗流体荷载时引起混凝土重力坝的位移,导出了均质各向同性地基在渗流体荷载作用下的应力解答和位移解答.通过理论分析得到:(1)由于渗流体荷载引起上游地基下沉,下游地基上抬,从而使地基转动,导致坝体向上游位移.(2)作用在地基上的水荷载按面荷载分析的位移大于按渗流体荷载分析的位移,但它们都引起坝体向上游位移.
The concrete gravity dam＇s displacement caused by foundation seepage volume forces was studied based on the elastic theory and a porous continuum model.Stresses and displacements in the isotropic foundation with seepage volume forces are obtained.Some conclusions are drawn：（1） With the upstream foundation subsidence and the downstream foundation elevation by the seepage volume forces,the dam has an upcurrent displacement.（2） The displacement caused by the foundation area force is larger than that cansed by the foundation seepage volume force,but these loads all lead to the dam upcurrent displacement.
出处
《力学与实践》
CSCD
北大核心
2010年第1期33-36,共4页
Mechanics in Engineering
基金
三峡大学基金项目资助(2008A007
20088041)
关键词
重力坝
渗流体荷载
弹性理论
多孔连续介质
gravity dam
seepage volume force
elastic theory
porous continuum model
