钢框架梁柱T型钢连接节点的性能研究

Research on the Behavior of Beam-to-column T-connections of Steel Frame

根据钢框架梁柱剖分T型钢连接节点的简化力学模型,提出一种用已知节点尺寸来预测其Mθr关系的非线性数学模型,模型中的主要参数是节点初始转动刚度和极限承载力。在对节点的初始位移和极限承载力做了理论分析后,给出了计算初始转动刚度和极限承载力的方法。将建议公式计算值和试验结果作了比较,验证了初始转动刚度和极限承载力的计算方法和数学模型的正确性。

Based on the simplified mechanical model of beam-to-column T-connections of steel frame, a nonlinear mathematic model was proposed to predict the M-θ r? relations by use of the known sizes of the connections.The major parameters of the model are the initial rotational stiffness and the bearing capacity. After the theoretical analysis about the initial deformation and the bearing capacity of the connections, formulas of calculating the initial rotational stiffness and the bearing capacity were proposed. Compared with the test results, the calculation methods of the initial rotational stiffness and the bearing capacity and the mathematic model were testified to be true.