钢纤维混凝土方形板的冲切强度统一解  

UNIFIED SOLUTIONS OF ULTIMATE PUNCHING SHEAR STRENGTH OF SQUARE STEEL FIBER CONCRETE SLABS

作　　者：杨青顺[1,2] 魏雪英[1] 赵均海[1] 

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]青海大学建筑工程系,青海西宁810016

出　　处：《工程力学》2008年第9期176-179,共4页Engineering Mechanics

基　　金：教育部博士点基金项目(2004710001);陕西省自然科学基金项目(2005E204)

摘　　要：该文基于统一强度理论对钢纤维混凝土方形板的冲切承载力进行了理论分析,推导了冲切破坏强度的计算公式。所得的解考虑了板的抗弯能力、纵向钢筋以及材料的中间主应力效应对冲切破坏强度的影响,可以灵活地应用于各种不同材料。将该文的理论计算值与试验值进行了比较,二者吻合较好。The punching shear in concrete slabs is a serious problem in certain structural systems. The steel fiber concrete has been widely used because it has higher tensile strength and ductility than ordinary concrete. A simple analytical model is presented to predict the ultimate punching shear strength of square steel fiber concrete slab. The unified strength theory is used for the failure criterion of steel fiber concrete. The effect of the flexure capacity of the slab, the effects of the reinforcement and the intermediate principal stress on the punching shear strength are taken into account in this solution. Good agreement can be observed from the comparison between the model prediction and various test data.

关 键 词：固体力学 冲切强度 钢纤维混凝土方形板 统一强度理论 抗弯能力 

分 类 号：TU375.2[建筑科学—结构工程] TU528.572