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通过12组不同参数的开孔波折板连接件试件进行单调加载受剪试验,研究了不同构造参数的连接件试件的破坏形态、荷载-滑移特性、构造参数对受剪承载力的影响,以及贯穿钢筋的应变、开孔波折板的von Mises应力随荷载的变化规律。研究结果表明:开孔波折板连接件的荷载-滑移曲线基本可分为无滑移阶段、弹性阶段、塑性阶段及破坏阶段;波高和混凝土强度对连接件的承载能力、抗剪刚度、滑移特性等影响显著;开孔波折板焊接边的von Mises应力大于自由边,折板段的vonMises应力大于平板段,开孔周边板的von Mises应力随荷载增加而增加;结构参数相同的试件,贯穿钢筋直径越小,其承担的剪力越大,连接件波高越大,贯穿钢筋承担剪力越小;与开孔板连接件相比,无贯穿钢筋的开孔波折板连接件的受剪承载力提高了300%,设置贯穿钢筋的开孔波折板连接件的受剪承载力提高了约200%。
Twelve groups of specimens with different parameters were used to carry out monotonic loading shear tests. The failure modes, load-slip characteristics and the influence of structural parameters on the shear capacity of the specimens with different structural parameters were studied. , And the variation of the von Mises stress of the corrugated plate with the load through the strain of the steel bar. The results show that the load-slip curve of the perforated corrugated board connector can be basically divided into the non-slip phase, the elastic phase, the plastic phase and the failure phase. The effect of the wave height and the concrete strength on the bearing capacity, shear stiffness, The von Mises stress of the welded edge of the perforated corrugated plate is larger than that of the free edge, the von Mises stress of the folded plate section is larger than that of the flat plate section, and the von Mises stress of the perforated peripheral plate increases with the increase of the load. , The smaller the diameter of the through rebar, the greater the shear force it undertakes, the greater the wave height of the connecting member, the smaller the shear force through the rebars; Compared with the perforated plate connector, the perforated corrugated plate connector The shear capacity is increased by 300%, and the shear capacity of the perforated corrugated plate through the rebar is increased by about 200%.