Scale Effects of Direct Shear Box on Behavior of Geogrid-Sand Interface  

作　　者：Hamed Mirzaeifar 

机构地区：[1]Department of Civil Engineering,Islamic Azad University,Pardis Branch,Tehran,Iran

出　　处：《Journal of Civil Engineering and Architecture》2024年第11期552-557,共6页土木工程与建筑（英文版）

基　　金：The kind co-operation and financial support provided by Islamic Azad University-Pardis Branch and K.N.Toosi University of Technology(Faculty of Civil Engineering)is gratefully appreciated.

摘　　要：Direct shear test is one of the simplest and most economical tests to measure shear strength parameters of dry or saturated sandy soil as well as soil-geogrid interaction parameters.In the current study the effects of specimen size and density on soil-geogrid interaction parameters employing shear boxes of 6×6 cm,10×10 cm and 30×30 cm have been investigated.Results show that increasing specimen size of unreinforced sand with constant density results in a decrease in angle of friction which has been attributed to reduced confinement effect using larger shear boxes.The rate of reduction in angle of friction is increased by increasing soil density and using geogrid as reinforcement.

关 键 词：DIRECT SHEAR BOX GEOGRID SHEAR strength SPECIMEN size DIRECT SHEAR test 

分 类 号：TU44[建筑科学—岩土工程]