三参数双τ^2强度理论及其在岩石材料中的应用  

A TRI-PARAMETER STRENGTH THEORY (TWIN τ2 AND ITS APPLICATION FOR ROCK MATERIALS

作　　者：陈四利[1] 宁宝宽[1] 鲍文博[1] 周辉[2] 金生吉[1] 孙秀丽[1] 

机构地区：[1]沈阳工业大学建筑工程学院,辽宁沈阳110023 [2]中国科学院岩土力学重点实验室,湖北武汉430071

出　　处：《岩石力学与工程学报》2005年第7期1106-1109,共4页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50204009);沈阳工业大学学科建设基金资助项目(521100401)

摘　　要：岩石力学中的强度理论是土木、采矿和水利等众多岩石工程中的安全性和稳定性设计的重要基础理论,它的研究具有重要的意义。首先,在二参数的双τ2强度理论的基础上,建立了三参数双τ2强度理论,并给出了材料的极限强度比,从而说明了对应不同材料的不同强度理论。其次,利用三参数双τ2强度理论分析了岩石材料的脆性破坏,并同某些岩石岩样的试验数据进行了对比。结果表明,三参数双τ2强度理论在岩样的强度分析中是令人满意的。Strength theory of rock is important in safety evaluation and designs of the civil,mining and hydraulic rock engineering,and has important significance in the study of rock mechanics. In this paper,the tri-parameter strength theory under complex stress states, called twin 2τ,is derived. At first,the relations among the compressive strength,tensile strength and shear strength are proposed. Secondly,the brittle failure of rock is analyzed by using the developed twin 2τ strength theory and compared with the available experimental data for some rock materials. The results are shown to be satisfactory.

关 键 词：岩石力学 复杂应力状态 强度理论 

分 类 号：TU451[建筑科学—岩土工程]