Abstract
It is well-known that the mechanical behaviors of rock joints due to shearing generally are heavily dependent on the their geometrical condition, which is so-called roughness profile. Therefore, it is inevitable factor to evaluate the effect of roughness profile on the shear behavior. Up to now, many researchers have proposed the formulations, which associate the shear strength with roughness profile of rock joints, under the idealized assumption that no change of the configuration of joint surface due to shearing occurs. From these viewpoints, focusing on the geometrical change of joint surface due to shearing, this study proposes the formulation of shear strength based on digital data of roughness profile.
