基于协同学分析的岩体累积损伤力学模型研究  

A NEW MECHANICAL MODEL FOR ACCUMULATIVE DAMAGE OF ROCK MASS BASED ON SYNERGETIC ANALYSIS

作　　者：于广明[1] 潘永战[1,2] 曹善忠 吴艳霞[1] 康寅[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]河南科技大学建筑工程学院,河南洛阳471003 [3]中矿金业股份有限公司,山东招远265400

出　　处：《岩石力学与工程学报》2012年第A01期3051-3054,共4页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50874064;50904039);山东省科技攻关项目(2009GGB01010)

摘　　要：基于岩体材料的非连续特征,将岩体视为由岩石和结构面组成的系统。基于协同学研究问题的微观处理方法,以被结构面分割的岩石块体相对于其原始平衡位置的位移作为序参量,建立岩石块体运动序参量的主方程。通过对主方程进行求解,建立一种考虑累积损伤的岩体力学模型。通过与已有研究成果对比分析,结果表明,该模型能够很好地解释在动载条件下岩石所表现出来的承载能力变化、损伤累积效应等现象。Rock mass is treated as a system composed of rock and discontinuities based on the its characteristics of discontinuous. The order parameter equation of rock block was gained by means of synergetic microtreatment method, where the order parameter is displacement of rock blocks, which is divided by structural plane, relative to its original balance position. A new mechanical model for accumulative damage of rock mass is put forward through the solution of this equation. Comparison between the calculation results and other research results shows that this new mechanical model can explain many phenomena of rock mass under dynamic loads such as bearing capacity and damage accumulative effect more rationally.

关 键 词：岩石力学 协同学 岩体 累积损伤 力学模型 

分 类 号：TU452[建筑科学—岩土工程]