岩土力学2012，Vol.33Issue(8)：2465-2471,7.
加肋土工膜与砂性土界面相互作用机制分析
Analysis of interaction mechanism of reinforced geomembrane and sandy soil interface
摘要
Abstract
Interface instability between high-density pdyethylene (HDPE) geomembrane and sand is a main reason for landfill structural failure on lining interface. A series of direct shear tests are carried out to investigate interfacial characteristics and specimen failure types of a novel geosynthetics-reinforced HDPE geomembrane and sandy soil interface. Based on the results of direct shear tests, the interaction mechanism of interface is analyzed. It is proposed that the total resistance of interface between reinforced geomembrane and sandy soil is made up of skin friction resistance, side frictional resistance and bearing resistance of reinforcement. Bearing resistance of reinforcement is given by using the theory of slip line field. Results also show that the interface shear strength is significantly enhanced by the bearing resistance of reinforcement, especially in the higher normal stress. The results show that the theoretical value and experimental value varies in the same trend. The analytic solutions can reasonably indicate the interface total resistance.关键词
加肋土工膜/机制分析/端承阻力Key words
reinforced geomembrane/ mechanism analysis/ bearing resistance分类
建筑与水利引用本文复制引用
高俊丽,张孟喜,林永亮,邱成春..加肋土工膜与砂性土界面相互作用机制分析[J].岩土力学,2012,33(8):2465-2471,7.基金项目
国家自然科学基金资助项目(No.40972192). （No.40972192）
