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为研究带开孔钢板剪力连接件的钢-混凝土组合桥面板的受力性能,以开孔钢板剪力连接件的布置形式、组合板的厚度、贯穿钢筋数量等为参数,设计制作了14块钢-混凝土组合板,对其进行正、负弯矩作用下的两点对称集中静力加载试验。分析了组合桥面板的破坏形态和变形能力、钢板与混凝土的应变发展情况、相对滑移量和受弯承载力。试验结果表明:大部分组合板发生弯曲破坏,少量组合板为竖向剪切破坏或纵向剪切破坏;组合桥面板具有较高的承载能力和抗弯刚度,并具有良好的延性。采用简化塑性理论对钢-混凝土组合桥面板进行了受弯承载力分析,得到了正、负弯矩作用下的受弯承载力的实用计算式,并与试验结果对比,二者吻合良好。
In order to study the mechanical properties of steel-concrete composite bridge deck with perforated steel plate shear connectors, the design of 14 Block steel-concrete composite plate, under positive and negative bending moment of the two-point symmetrical concentrated static loading test. The failure mode and deformation capacity of composite bridge deck, strain development of steel plate and concrete, relative slip and flexural capacity were analyzed. The test results show that most of the composite plates are bent and damaged, and a small number of composite plates are damaged by vertical shear or longitudinal shear failure. The composite bridge deck has high carrying capacity and flexural rigidity with good ductility. The simplified plasticity theory is used to analyze the flexural capacity of steel-concrete composite bridge deck, and the practical formulas of flexural capacity under positive and negative bending moments are obtained. The results are in good agreement with the experimental results.