堆石坝面防渗土工膜接触剪切作用下本构模型的构建  

The Constitutive Model of Rockfill Dam's Geomembrane Undering the Contact Shearing Action

作　　者：夏姝珺 陈丹 王军[2] 

机构地区：[1]南京市水利规划设计院责任有限公司,南京210006 [2]江苏省交通规划设计院股份有限公司,南京210006

出　　处：《中国农村水利水电》2015年第4期153-155,158,共4页China Rural Water and Hydropower

摘　　要：堆石坝面土工膜与面板联合防渗结构中,土工膜与相接触的垫层材料之间的界面力学特性是关系坝体稳定性的关键因素。首先利用土工膜直剪设备,对堆石坝面膜联合防渗工程中复合土工膜与无砂混凝土垫层材料之间的接触剪切力学特性进行了试验研究,并对不同工况下土工膜的界面力学特性进行了对比分析;然后借助相关力学知识推导得出了土工膜在剪切力作用下的本构模型,最后利用试验测试与理论推导的方式对所得到的本构模型进行了验证。In the rockfill dam＇s united con-seepage system, the interface mechanical properties of the geo-membrane and the cushion material have an important influence on the stability of the dam. At first, an experimental study is made of the interface mechanical properties of the geo-membrane in this paper with the use of the direct shear equipment. Besides, an analysis of it has made with dif- ferent shear conditions of geo-membrane. On the basis of this, a constitutive model of geo-membrane is constructed with the relevant knowledge of mechanics, which is under the condition of shear stress. Finally, the obtained constitutive model is validated by using the experimental data.

关 键 词：防渗土工膜 界面力学特性 堆石坝 本构模型 

分 类 号：TV49[水利工程—水工结构工程]