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《Rock and Soil Mechanics》 2003-01
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Experimental researches on unloading deformation of clay in excavation of foundation pit

HE Shi-xiu1, HAN Gao-sheng1, ZHUANG Xin-shan1, WU Xiang-guo2 (1. Department of Civil Engineering, Hubei Polytechnic University, Wuhan 430068, China; 2.Institute of Civil Engineering, Harbin Engineering University, Harbin 150001, China)  
A series of experimental researches on the deformation character were made of twenty undisturbed saturated samples of silty clay from a deep foundation pit in Wuhan at K0 consolidation and no drained shear test. The aim of the tests is to find the test curve of stress-strain and equation of elastic modulus in unloading of silty clay. The research results have shown that the curve of stress-strain in unloading is a hyperbola and is similar to the curve of triaxial compression test, but there is difference of a constant between them, and the equation of elastic modulus is different each other.
【Fund】: 湖北省教委重点科研课题资助项目(99A009)
【CateGory Index】: TU433
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