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对组合楼板的挠度进行研究,其值直接取决于异型钢板与混凝土间连接的剪切刚度。基于架构理论,直接考虑连接的剪切刚度,提出计算组合楼板挠度的方法,考虑混凝土层正常裂缝和受压下塑性变形对结构刚度的影响。采用本方法,可获得这些影响因素从初始阶段至极限状态全范围的变化情况。对异型钢板与混凝土的连接试件进行试验,结果表明:其连接性能分3个阶段。每个阶段都有不同的剪切特性,用于计算楼板挠度。从加载初期至极限状态,分析Holorib异型板组合楼板变形试验值的变化。采用本方法计算的楼板变形值,与试验值吻合较好。
The deflection of the composite slab is studied, the value of which depends directly on the shear stiffness of the connection between the profiled slab and the concrete. Based on the framework theory, the shear stiffness of the joint is considered directly and a method to calculate the deflection of the composite slab is proposed. The influence of the plastic deformation on the stiffness of the structure under the normal crack and compression of the concrete layer is considered. Using this method, the full range of these factors can be obtained from the initial stage to the limit state. The test of connecting specimens of special-shaped steel plate and concrete shows that the connection performance is divided into three stages. Each stage has different shear characteristics, used to calculate the floor deflection. From the initial stage of loading to the limit state, the change of deformation test value of Holorib shaped plate composite floor was analyzed. The floor deformation calculated by this method is in good agreement with the experimental value.