钢筋局部钢纤维高强混凝土板冲切挠度计算  

Calculation on punching shear deflection of the local steel fiber reinforced high-strength concrete slabs with reinforcement

作　　者：谢晓鹏[1] 高丹盈[2] 许洪春[1] 

机构地区：[1]郑州航空工业管理学院,河南郑州450015 [2]郑州大学,河南郑州450002

出　　处：《四川建筑科学研究》2009年第5期36-39,共4页Sichuan Building Science

基　　金：国家自然科学基金资助项目(50678159)

摘　　要：根据钢筋局部钢纤维高强混凝土冲切板的试验结果,讨论了钢纤维体积率、钢纤维掺加范围和混凝土强度对试验板冲切变形的影响,建立了试验板开裂荷载及荷载—挠度曲线上升段挠度计算公式,并进行了数值计算。结果表明,钢纤维的掺入对钢筋高强混凝土板冲切变形性能的改善比较显著;试验板挠度计算值与试验值吻合较好。Based on the experimental results of local reinforc steel fiber hight-strength concrete slabs with reirdorcement, this paper discusses the effects of steel fiber volume ratio, filling range of steel fiber and concrete strength on the punching shear deformation of experimental slabs. The formulas for calculating cracking load and deflections of ascending branch of slabs are set up. Numerical calculation is also carried out. The test resuhs show that steel fiber added in concrete promoted obviously the punching shear performance of slabs. Good agreement between the calculating values and the testing values of deflection is reached.

关 键 词：钢纤维 高强混凝土板 冲切 挠度 

分 类 号：TU375[建筑科学—结构工程]