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为评估矩形钢管混凝土框架节点的抗剪承载力,以杭州瑞丰大厦梁柱节点为研究背景,基于混凝土塑性损伤理论,采用有限元分析软件abaqus,对矩形钢管混凝土框架节点核心区的削弱变化进行了非线性有限元分析,得到其抗剪承载力.结果表明:经过节点核心区轴压比、壁厚比、高宽比的线性变化,其结构发生了破坏,破坏区域主要发生在节点的核心区域.本文研究成果为矩形钢管混凝土框架节点核心区抗剪承载力的设计提供了理论依据.
In order to evaluate the shear resistance of rectangular CFST frame joints, taking the beam-column joint of Ruifeng Building in Hangzhou as the research background and the abaqus finite element analysis software based on the plastic damage theory of concrete, the weakening changes of the core area of the rectangular CFST frame joints The results show that the failure of the structure occurs after the linear change of axial compression ratio, wall thickness ratio and aspect ratio of the core of the node, and the failure area mainly occurs in the core of the node Area.The research results in this paper provide a theoretical basis for the design of shear strength of the core of rectangular CFST frame joints.