用双剪强度理论解混凝土板冲切的轴对称问题  

SOLUTION OF THE AXISYMMETRICAL PUNCHING PROBLEM OF CONCRETE SLAB BY THE TWIN SHEAR STRENGTH THEORY

作　　者：严宗达[1] 

机构地区：[1]天津大学

出　　处：《工程力学》1996年第1期1-7,共7页Engineering Mechanics

基　　金：国家教委博士点基金

摘　　要：本文采用双剪强度理论，对混凝土板轴对称冲切破坏强度进行了计算。采用刚塑性模型，给出轴对称破坏机构，得到极限应力圆的包络线为二条直线，再利用虚功方程求得破坏荷载的上限。公式形式简单，与已有结果相比符合很好。in this paper, the axisymmetrical ultimate punching Strength of concrete slabs is obtained by using the twin shear strength theory. Rigid-plastic model has been adopted, an axisymmetrical failure mechanism given, the envelope of failure Mohr circles is found to be two straight lines. Then,the upper-bound of ultimate punching load is obtained by the virtual work equation. The numerical results are shown to be satisfactory compared with known results.

关 键 词：双剪强度理论 混凝土板 轴对称 冲切 

分 类 号：TU375.201[建筑科学—结构工程]