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“T形件”是组合结构梁柱连接节点的重要组件,文章利用组件法,以“T形件”为基本单元,分别给出了各组件的刚度计算方法,如钢筋抗拉刚度、柱壁抗压刚度、柱壁抗剪刚度、端板抗弯刚度、柱壁抗弯刚度、螺栓抗拉刚度,提出了负弯矩作用下端板连接半刚性钢管混凝土组合节点初始刚度计算公式;通过试验验证了所提负弯矩作用下组合节点初始刚度简化计算方法的正确性和准确性。该研究成果可为建立半刚性钢管混凝土组合框架设计方法提供科学依据。
“T-piece ” is an important component of combined structural beam-column connection. The article uses the component method and the “T-piece” as the basic unit, The stiffness of the column wall, the shear stiffness of the column wall, the bending stiffness of the end plate, the bending stiffness of the column wall and the tensile stiffness of the bolt, the formula for calculating the initial stiffness of the concrete- The correctness and accuracy of the simplified calculation method for the initial stiffness of the composite joints under the negative moment are verified through experiments. The research results can provide a scientific basis for the establishment of semi-rigid concrete-filled CFST frame design method.