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复合墙板的强度取决于混凝土的强度、约束程度和钢-混组合作用。详细介绍了约束作用对钢-泡沫混凝土复合墙板轴向承载力和性能的影响的试验研究。在配置不同栓钉和薄板边界条件各异的墙板上进行5个小型试验。使用轻质的泡沫混凝土作用填充材料,并通过双向栓钉使墙板与混凝土相互作用。荷载主要分布在混凝土表面,从而避免了对墙板直接施加受压荷载时,薄板发生早期或脆性局部屈曲。试验发现:混凝土会发生如纵向分离和对角剪切破坏等失效模式,而随着栓钉和薄板边界条件的改变,墙体的轴向力也在逐步增加。由于互相连接的栓钉发生了延性变形,压型钢板也使约束混凝土产生了侧向变形。根据试验所获得的失效模式提出一种新的方法来测定复合墙板的轴向力。
The strength of the composite wall depends on the strength of the concrete, the degree of constraints and the role of steel-mix. The influence of restraint on the axial bearing capacity and performance of steel-foam concrete composite wallboard is introduced in detail. Five small trials were carried out on wall panels with different studs and different boundary conditions. Fill the material with lightweight foam concrete and interact with the concrete through two-way pegs. The load is mainly distributed on the concrete surface, thus avoiding the local or early brittle local buckling when the panel is directly subjected to the compressive load. It is found that the failure modes such as longitudinal separation and diagonal shear failure occur in concrete, and the axial force of wall increases gradually with the change of the boundary conditions of pegs and thin plates. Due to the ductile deformation of the interconnected pegs, the profiled steel also causes lateral deformation of the confined concrete. A new method is proposed to determine the axial force of composite wallboard according to the failure mode obtained from the experiment.