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利用有限元分析软件ANSYS对梁柱端板连接标准型和腹板开孔型节点进行了非线性有限元分析,研究了腹板开孔参数对节点区应力分布、屈服时应力-应变发展变化及节点的弹性极限承载力和刚度的影响,揭示了节点根部塑性铰外移的根本原因,对不同开孔尺寸节点的力学性能进行了分析比较,着重探讨了端板厚度、螺栓、开孔参数对节点延性性能的影响。结果表明:梁柱端板连接腹板开孔型节点是一种值得推广的新型抗震节点。
The finite element analysis software ANSYS is used to analyze the beam-column end-plate connection standard and web open-ended type nodes by finite element method. The influence of the parameters of the web openings on the stress distribution in the joint area, the stress-strain evolution during the yielding, The ultimate bearing capacity and the stiffness of the joints are discussed. The root causes of the plastic hinge in the root of the joints are revealed. The mechanical properties of the joints with different hole sizes are analyzed and compared. The effects of the thickness of the end plate, the parameters of the bolts and holes on the joint ductility The impact of performance. The results show that the new type of aseismic nodes is worth popularizing.