岩土力学2017，Vol.38Issue(2)：400-408,418,10.DOI:10.16285/j.rsm.2017.02.013
基于修正Drucker-Prager准则的岩石次加载面模型
Subloading surface model for rock based on modified Drucker-Prager criterion
摘要
Abstract
To simulate the deformation behavior of rocks under cyclic loading and unloading,a cyclic loading-unloading model is developed based on Drucker-Prager (D-P) yield criterion and the subloading surface theory.Tensile strength and stress angle effect are considered in this model.By introducing the coruer model into the traditional D-P yield criterion,and referring the D-P-Y yield criterion proposed by Yin Youquan,a modified D-P yield criterion is put forward on the basis of strength characteristics of rocks under triaxial compression and tension.According to the modified yield criterion and the subloading surface theory,a subloading surface model for rock under cyclic loading and unloading is proposed.Numerical verification of this model is conducted by programing.The results show that the subloading surface model can be used to represent the Mansingh reaction and the ratchet effect of rock.As the tensile strength decreases,the deformation of rock increases,and the rate of increase is gradually improved,which demonstrates that the modified model can be used to well reflect the effect of tensile strength on the deformation of rock under cyclic loading and unloading.关键词
应力角效应/拉剪区/修正的D-P准则/次加载面/循环加载Key words
stress angle effect/tensile shear region/modified Drucker-Prager criterion/subloading surface/cyclic loading-unloading分类
建筑与水利引用本文复制引用
周永强,盛谦,朱泽奇,付晓东..基于修正Drucker-Prager准则的岩石次加载面模型[J].岩土力学,2017,38(2):400-408,418,10.基金项目
国家重点基础研究发展计划(973)项目(No.2015CB057905) （973）
国家自然科学基金项目集成项目(No.91215301) （No.91215301）
国家自然科学基金资助项目(No.11272331).This work was supported by the National Program on Key Basic Research Project of China (973 Program) (2015CB057905),the Integration Project of the National Natural Science Foundation of China (91215301) and the National Natural Science Foundation of China(11272331). （No.11272331）
