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为深入研究开孔板连接件的抗剪传力机理,基于ABAQUS平台建立了开孔板连接件的精细有限元模型,详细介绍了开孔板连接件的建模方法和材料本构关系。首先通过与典型开孔板连接件抗剪试验结果对比,验证了数值仿真方法的可靠性。其次对混凝土榫和贯通钢筋的应力特性进行了分析。最后深入探讨了开孔板连接件抗剪承载力的主要影响因素。结果表明,提高混凝土强度等级、增大混凝土榫直径可提高开孔板连接件的抗剪承载力;孔内贯通钢筋对抗剪刚度影响小,但可有效提高开孔板连接件的抗剪承载力和延性。
In order to study the shear resistance mechanism of perforated plate connector deeply, a precise finite element model of perforated plate connector was established based on ABAQUS platform. The modeling method of perforated plate connector and the material constitutive relation were introduced in detail. Firstly, the reliability of the numerical simulation method is verified by comparison with the shear test results of typical perforated plate connectors. Secondly, the stress characteristics of concrete tenons and through bars are analyzed. Finally, the main influencing factors of shear bearing capacity of perforated plate connectors are discussed in depth. The results show that increasing the concrete strength grade and increasing the diameter of concrete tenons can increase the shear capacity of the perforated plate connectors. The penetration through the holes has little effect on the shear stiffness but can effectively improve the shear bearing capacity of the perforated plate connectors Force and ductility.