【摘要】 复合土工膜心墙堆石坝是为了防止堆石坝渗流和应力变形问题而设计的一种新型坝体。以白龙江某复合土工膜心墙堆石坝为例,建立三维有限元模型,并利用MIDAS/GTS大型岩土分析软件,对正常蓄水期、正常蓄水期加8度地震烈度和无膜情况三种工况下坝体和复合土工膜心墙的应力变形进行了模拟,分析了地震作用下复合土工膜对坝体应力变形的影响。比较发现,复合土工膜在很大程度上抑制了坝体的应力变形。更多还原

【Abstract】 Geomembrane wall rock-fill dam is a new rock-fill dam to prevent the seepage and stress deformation.A three-dimensional finite element model was developed for a composite geomembrane wall rock-fill dam in Bailongjiang.The large geotechnical analysis software MIDAS/GTS was used to simulate the stress deformation of the composite geomembrane wall rock-fill dam under three working conditions,including the normal storage period,normal storage period with 8-degree earthquake,and normal storage period with 8-degree earthquake but without membrane.The effects of composite geomembrane on the stress deformation of the rock-fill dam were analyzed under earthquake.The results showed that the composite geomembrane restrains the stress deformation of the rock-fill dam.更多还原