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主要通过试验研究与数值模拟,分析钢板-混凝土组合板在受剪状态下的承载力、变形、裂缝发展情况以及钢板与混凝土参与抗剪程度等。进行了3块钢板-混凝土组合板试件和1块无钢板混凝土试件的抗剪承载力试验。结果表明:钢板-混凝土组合板试件的剪切破坏形式主要是斜拉破坏;钢板承担了约50%以上总剪力,由于钢板的协同作用,混凝土承担的剪力与按照规范计算的混凝土抗剪承载力相比有较大幅度的提高;随着栓钉间距的增大,构件的抗剪承载力减小。基于修正压力场理论对ABAQUS进行了材料层面的二次开发,建立了适合钢板-混凝土组合板抗剪分析的数值仿真模型,模拟结果与试验结果吻合较好。
Mainly through experimental research and numerical simulation, analysis of steel-concrete composite plate in shear state bearing capacity, deformation, crack development and the participation of steel and concrete shear strength and so on. The shear capacity tests of three steel-concrete composite plates and one steel-free concrete plate were carried out. The results show that the shear failure modes of steel-concrete composite plate are mainly tensile failure; the steel plate takes over 50% of the total shear force. Due to the synergistic effect of the steel plate, the shear strength of the concrete and the concrete resistance Shear capacity compared to a more substantial increase; with the stud spacing increases, the shear strength of the component decreases. Based on the modified pressure field theory, the material layer secondary development of ABAQUS was carried out. The numerical simulation model suitable for the shear analysis of steel-concrete composite slab was established. The simulation results are in good agreement with the experimental results.