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A Study on Shear Behaviors for the Rock Joint in the Constant Normal Stiffness Condition  

Kim Yong-Jun (대림산업(주) 토목사업본부 토목사업부)
Lee Young-Huy (영남대학교 공과대학 토목도시공학부)
Kim Sun-Ki (대림산업(주) 토목사업본부 토목사업부)
Kim Chu-Hwa (대림산업(주) 토목사업본부)
Publication Information
Tunnel and Underground Space / v.15, no.5, 2005 , pp. 330-337 More about this Journal
Abstract
Apart from the geometric features of the rock joints, the shear characteristics of rock mass subject to shear force are also significantly affected by the boundary conditions in the neighborhood of the rock mass. The boundary conditions of the rock mass can be classified into 4 categories according to the stress state of the rock joint, of which the constant normal load (CNL) is the most used for shear test and produces the lowest shear strength and different behavior. In this study, the shear behavior under constant normal stiffness condition was able to replicated by the graphic method normalized by the test results under constant normal stress condition.
Keywords
Boundary condition; Constant normal stress; Constant normal stiffness; Graphic method;
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