双向预应力钢筋混凝土叠合板裂缝试验研究

Experimental Study on Cracking of Two-Way Prestressed Composite Concrete Slabs Without Web Reinforcement

通过 9块中置集中荷载下 ,对边简支、对边自由的双向预应力混凝土无腹筋叠合板裂缝的试验研究 ,探讨了裂缝种类 ,并根据实测数据建立了板底纵缝的开裂荷载计算公式。

Experiments are conducted of nine web reinforcement absent two way pretressed composite concrete slabs with simply supported and free boundary on the opposite sides subjected to concentrated load at the center. The kinds of cracking are analysed, at the same time the formula for the cracking load of the longitudinal cracks in the bottom is put forward. The formula is simple in form and the calculated results are in good agreement with the measured ones.