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介绍了钢管柱-H形梁连接内加劲铸钢模块节点的概念设计方法,对该节点进行了循环往复加载试验研究,考虑了不同轴压比对节点抗震性能的影响。试验结果表明:提出的铸钢模块节点具有良好的延性、较好的耗能能力、较高的承载力,可充分发挥节点域的剪切塑性耗能;铸钢模块节点的延性和耗能能力随着轴压比的增大略有降低。现行美国钢结构规范中的节点受剪承载力公式经修正后可适用于铸钢模块节点,且偏于安全;通过控制梁与节点域的相对强弱,可实现对节点屈服顺序的控制。
The concept design method of steel cast-in-steel joint in steel pipe column-H beam is introduced. The cyclic loading experiment is carried out for this node, and the influence of different axial compression ratio on the seismic performance of the joint is considered. The experimental results show that the proposed cast steel module joints have good ductility, good energy dissipation capacity and high bearing capacity, which can give full play to the shear plastic energy dissipation in the node region. The ductility and energy dissipation capacity of the cast steel module joints As the axial pressure ratio increases slightly lower. The current formulas of the shear strength of the joints in the current US steel code can be applied to the cast steel module nodes after being corrected, and are safe. The control of the yield order of the joints can be achieved by controlling the relative strength between the beam and the node.