标题：Study on Post-failure Deformation and Residual Strength of Rock Mass Based on Hoek-Brown Criterion
作者：Han, Jianxin; Tong, Xinghua; Wang, Lei; Sun, Guofu
作者机构：[Han, Jianxin; Tong, Xinghua; Wang, Lei; Sun, Guofu] Shandong Univ, Geotech & Struct Engn Res Ctr, Jinan 250061, Shandong, Peoples R China.
会议名称：2nd International Conference on Civil Engineering, Architecture and Building Materials (CEABM 2012)
会议日期：MAY 25-27, 2012
来源：PROGRESS IN CIVIL ENGINEERING, PTS 1-4
关键词：Hoek-Brown criterion; strength parameter evolution; residual strength;; post-failure deformation
摘要：In order to predict the stability of surrounding rock mass in geotechnical engineering, it is important to study the post-failure deformation property and residual strength of rock mass. Based on evolutional behavior of strength parameters, aiming at generalized Hoek-Brown strength criterion, selecting major principal strain epsilon(1) as strain softening parameter, this paper presents the method of solving post-failure stress-strain curve. In numerical case, the effect of evolutional law of strength parameters m, s and a to deformation and residual strength is discussed and we can draw the following conclusions: the greater the residual values of m, s are and the smaller the residual value of a is, the post-failure strain softening curve falls more gently and the greater the residual strength is.