岩土力学2018，Vol.39Issue(5)：1761-1766,6.DOI:10.16285/j.rsm.2016.2407
泥皮存在时防渗墙与复合土工膜联接型式模型试验
Experiment on connecting form between cutoff wall and composite geomembrane of cofferdam with existing wall mud
摘要
Abstract
The combination of cutoff wall and composite geomembrane is usually used as the imperious system recent years.The uncoordinated deformation between the cutoff wall and the fillings will cause the composite geomembrane cracks.The connecting form between cutoff wall and composite geomembrane is studied through geotechnical centrifuge tests.Four model tests considering the cutoff wall,wall mud,the backfilled materials and the connecting form are performed to investigate the variation of the strain of the composite membrane.When the geomembrane is laid horizontally on the top level of the cutoff wall,it is seriously strengthened at the connection near the cutoff wall,and the geomembrane is broken down when the differential settlement increases to a certain value.When the geomembrane is first laid vertically above the cutoff wall and then horizontally extended outward,the tensile strain of geomembrane is less at the connection.The longer the distance to the connection point,the less the strain.The existence of wall mud can effectively alleviate the local strain of the geomembrane.关键词
围堰/离心模型试验/复合土工膜/应变/防渗墙/泥皮Key words
cofferdam/centrifugal model test/composite geomembrane/strain/cutoff wall/mud分类
建筑与水利引用本文复制引用
李波,肖先波,徐唐锦,周嵩..泥皮存在时防渗墙与复合土工膜联接型式模型试验[J].岩土力学,2018,39(5):1761-1766,6.基金项目
中央级公益性科研院所基本科研业务费(No.CKSF2017012/YT) （No.CKSF2017012/YT）
国家自然科学基金项目(No.51308067) （No.51308067）
浙江省公益技术研究计划项目(LGF18E080004) （LGF18E080004）
湖州市自然科学资金项目(No.2016GY19) （No.2016GY19）
广西重点实验室系统性研究项目(No.2016ZDK011,No.2014ZDK0010). This work was supported by the Central Research Institutes of Basic Research and Public Service Special Operations (CKSF2017012/YT),the National Natural Science Foundation of China (51308067),Zhejiang Public Welfare Technology Research Project (LGF18E080004),Huzhou Natural Science Fund Project(2016GY19) and the Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Structural Safety (2016ZDK011,2014ZDK0010). （No.2016ZDK011,No.2014ZDK0010）
