带接缝的混凝土叠合楼板足尺试验研究

Experimental study on full-scale superimposed concrete slab with joints

对预制板带接缝的混凝土叠合楼板进行了足尺试验,研究了叠合板的受力性能,包括破坏机理、承载力、刚度、裂缝分布、叠合面抗剪性能等。并对比研究了钢筋桁架对叠合板的作用、拼接缝对叠合板的影响。通过与理论分析进行对比,提出了计算假定和计算方法,为带接缝的装配式叠合楼板的设计提供参考。

Full-scale test was carried out on superimposed concrete slab with joints in precast slabs to study the mechanical performance of superimposed slab. The properties were studied including failure mode,bearing capacity,stiffness,crack distribution and shear capacity of superimposed surface. The influences of steel bar truss and joints on superimposed slab were compared and investigated. By comparing with the theoretical analysis,the calculation assumptions and calculation methods were put forward,providing a reference for the design of precast superimposed slab with joints.