灌芯混凝土砌块砌体破坏准则研究  

RESEARCH ON THE FAILURE CRITERION OF GROUTED CONCRETE MASONRY

作　　者：吕伟荣[1,2] 王猛[2] 刘锡军[2] 

机构地区：[1]湖南科技大学湖南省普通高等学校土木工程施工过程与质量安全控制重点实验室,湖南湘潭411201 [2]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《工程力学》2011年第11期251-256,共6页Engineering Mechanics

基　　金：湖南科技大学科学校博士启动基金项目(E58129);湖南省教育厅优秀青年项目(10B035)

摘　　要：该文在Tsai-Wu张量多项式和试验的基础上,构造出灌芯混凝土砌块砌体平面受力状态下三应力参数的破坏准则;并引入材料力学的应力转换公式,将破坏准则转换为以主应力和主应力与材料主轴夹角为参数的公式。同时,结合国内灌芯混凝土砌块砌体的试验结果,利用最小二乘法确定相关参数,最终形成可适用于工程实际应用的三次多项式破坏公式,并绘制出相应的三维和二维破坏曲面。计算结果表明,计算曲线与试验结果吻合较好,可用于中高层配筋砌块砌体剪力墙结构的设计和数值分析。Based on the Tsai-Wu＇s tensor polynomial and test of grouted concrete masonry, a cubic polynomialfailure criterion equation involving three stress parameters under plane stress state, is presented in the paper. By using the stress transform equation of material mechanics, the above equation can be deduced into one depended on two principal stresses and its angles. Using experimental data and the least-squares method, the parameters of the grouted concrete block masonry have been calculated, and the cubic polynomial failure criterion equation applicable to engineering is obtained, and the 3D failure surfaces and the 2D failure curves are gained. The calculated results show that the calculated curves are in a good agreement with the experimental results and used for the design and numerical analysis of grouted concrete masonry structures.

关 键 词：灌芯混凝土砌块砌体 破坏准则 张量多项式 破坏曲面 最小二乘法 

分 类 号：TU398.5[建筑科学—结构工程]