Numerical Built-In Method for the Nonlinear JRC/JCS Model in Rock Joint.

The joint surface is widely distributed in the rock, thus leading to the nonlinear characteristics of rock mass strength and limiting the effectiveness of the linear model in reflecting characteristics. The JRC/JCSmodel is the nonlinear failure criterion and generally believed to describe the characteristics of joints better than other models. In order to develop the numerical program for JRC/JCS model, this paper established the relationship between the parameters of the JRC/JCS and Mohr-Coulomb models. Thereafter, the numerical implement method and implementation process of the JRC/JCSmodel were discussed and the reliability of the numerical method was verified by the shear tests of jointed rockmass. Finally, the effect of the JRC/JCSmodel parameters on the shear strength of the joint was analyzed. [ABSTRACT FROM AUTHOR]