土工防渗膜在地基中的力学作用机理分析  

Analysis on Mechanical Behavior Mechanism of Geomembrane in Foundation

作　　者：杨云[1] 雒亿平[1,2] 言志信[2,3] 

机构地区：[1]国网甘肃省电力公司经济技术研究院,甘肃兰州730050 [2]兰州大学土木工程与力学学院,甘肃兰州730000 [3]河南城建学院土木工程学院,河南平顶山467036

出　　处：《铁道建筑》2016年第10期89-92,共4页Railway Engineering

基　　金：国家电网公司科技项目(KJ[2013]9;SGGSJYOOGHJS1400056;SGTYHT/13-JS-175)

摘　　要：针对湿陷性黄土构建了土工防渗膜灰土垫层复合地基,并获得发明专利。结合理论和数值模拟探讨了上部灰土垫层、下部原状湿陷性黄土体之间设置土工防渗膜构建的复合地基中,土工防渗膜与灰土垫层和黄土体的相互作用机理及效应,揭示了土工防渗膜限制复合地基的侧向变形、增强地基自稳能力并与地基协调变形的规律。土工防渗膜对地基力及变形的影响不大,主要起防渗隔水作用。In this paper,the geomembrane lime soil cushion composite foundation was constructed for the collapsible loess,which obtained the invention patent.Interaction mechanism and effect among the geomembrane,the lime soil cushion and the loess mass were studied in the composite foundation where the geomembrane was set between the upper lime soil cushion layer and the lower original collapsible loess mass layer.The results showed that geomembrane could constrain lateral deformation of composite foundation,strengthen the self-stabilization ability of the composite foundation and concluded the coordinated deformation law interacted with foundation.Geomembrane has little effect on foundation force and deformation and mainly plays the role of seepage prevention and water isolation.

关 键 词：土工防渗膜 复合地基 湿陷性黄土 承载变形特性 地基处理 

分 类 号：TU472.34[建筑科学—结构工程]