复杂应力状态下混凝土强度理论研究  

Study on concrete strength theory in complex stress state

作　　者：金生吉[1] 陈四利[1] 孙一民[2] 

机构地区：[1]沈阳工业大学建筑工程学院,辽宁沈阳110023 [2]沈阳双兴建设集团,辽宁沈阳110004

出　　处：《沈阳工业大学学报》2004年第3期329-332,共4页Journal of Shenyang University of Technology

摘　　要：混凝土的强度理论是土木、采矿和水利等众多混凝土工程中的安全性和稳定性设计的重要基础理论,对它进行研究具有重要的意义.为此,在双τ2屈服准则的基础上,建立了两参数双τ2强度理论,给出了材料的极限强度比,从而说明了不同的材料对应着不同的强度理论.其次,利用两参数双τ2强度理论分析了混凝土的脆性破坏,并同某些混凝土的实验数据进行了对比,最后,讨论了中间主应力效应,结果表明,运用两参数双τ2强度理论分析混凝土强度的结果是令人满意的.The strength theory of concrete is an important theory in the safety and stability designs of the civil, mining and hydraulic concrete engineering etc, and it has important significance in the study of concrete mechanics. At first, based on the twin τ~2 strength theory in this paper, the twin τ~2 strength theory of two parameters is derived under the complex stress state. The relation among the compressive strength and tensile strength is proposed. Secondly, the brittle failure of concrete is analyzed by using the twin τ~2 strength theory of two parameters and compared with the available experimental data for some concrete materials. At last, middle principal stress effect is discussed. The results of the twin τ~2 strength theory of two parameters are shown to be satisfactory.

关 键 词：混凝土 强度理论 复杂应力状态 

分 类 号：TU528.1[建筑科学—建筑技术科学]