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以钢板混凝土板的平面外弯剪性能试验研究为基础,采用有限元软件ABAQUS建立了钢板混凝土板的非线性有限元模型,模拟弯剪破坏、剪切破坏、钢板剥离破坏3种破坏形态下构件的受力性能。模型考虑了材料的非线性、钢板与混凝土的接触和栓钉的滑移模型,计算结果与试验结果吻合良好。利用有限元模型,对影响钢板混凝土板面外受力性能的主要参数进行了分析,包括栓钉间距、钢板厚度。结合试验现象和有限元分析结果,指出了钢板混凝土板面外受力性能随参数变化的原因,并提出了在一定情况下不同破坏形态之间转化的参数临界值。结果表明:可以通过对栓钉间距与钢板厚度的控制来使得钢板屈服,从而保证无抗剪钢筋的钢板混凝土板在平面外可以达到弯剪破坏形式。
Based on the experimental study of the out-of-plane bending behavior of steel slab, the nonlinear finite element model of the slab is established with the finite element software ABAQUS to simulate three kinds of failure modes, including bending shear failure, shear failure and steel strip peeling failure The force performance. The model takes into account the nonlinearity of the material, the contact between the steel plate and the concrete and the slip model of the peg. The calculated results are in good agreement with the experimental results. The finite element model is used to analyze the main parameters which affect the external force performance of steel plate, including the pin spacing and plate thickness. Based on the experimental phenomena and the results of finite element analysis, the reasons for the change of the plate surface mechanical properties with parameters are pointed out. The critical value of the transformation of different failure modes under certain conditions is proposed. The results show that the plate yield can be controlled by the control of the pin spacing and the thickness of the steel plate so as to ensure that the steel plate slab without shear strength can reach the form of bending failure outside the plane.