双向预应力混凝土叠合板抗剪强度试验研究

Experimental Study on Shear Strength of Two Way Prestressed Composite Concrete Slabs without Web Reinforcement

本文对九块在中置集中荷载作用下对边简支、对边自由的双向预应力无腹筋叠合板进行了试验研究 .通过对其破坏形态、破坏机理以及受力状态的分析 ,提出了板的抗剪承载力计算公式 ,该式与试验结果有较好的拟合优度 ,具有较高的应用价值 .

Experiments are conducted of nine web reinforcement absent two way prestressed composite concrete slabs with simply supported and free boundary on the opposite sides subjected to concentrated load at the center. The results are presented in this paper. The failure mode, failure mechanism and the state of stresses are analysed. Furthermore, formuas are proposed for the calculation of shear strength of slabs. The calculated results are in good agreement with the measured ones.