【摘要】 首先开展了预应力套接装配式混凝土框架节点及现浇钢筋混凝土框架节点的低周往复加载试验。试验结果表明，预应力套接装配式混凝土框架节点的承载力和耗能能力优于现浇钢筋混凝土框架节点。基于试验结果，采用ABAQUS软件对预应力套接装配式混凝土框架节点进行数值模拟，模拟所得的破坏形态和应力分布与试验结果相吻合，验证了建模的合理性。在此基础上研究了轴压比、有效预应力、梁钢套竖向钢板厚度、螺栓位置和加劲肋对预应力套接装配式混凝土框架节点抗震性能的影响，得到了最佳设计参数。结果表明：轴压比应控制在0.05～0.3的范围内，有效预应力应控制在0.3f_ptk～0.7f_ptk的范围内，梁钢套竖向钢板厚度应控制在10～15mm之间，螺栓位置l应控制在90～100mm范围内，加劲肋应在梁钢套上下两侧每侧布置两个，尺寸按照宽厚比12适当放宽。更多还原

【Abstract】 Firstly, the low-cycle reciprocating loading test of prestressed sleeve assembled concrete frame joints and cast-in-place reinforced concrete frame joints was carried out. The test results show that the bearing capacity and energy dissipation capacity of prestressed sleeve assembled concrete frame joints are better than those of cast-in-place reinforced concrete frame joints. Based on the test results, ABAQUS software was used to simulate the prestressed sleeve assembled concrete frame joints. The failure mode and stress distribution obtained by simulation were consistent with the test results, which verified the rationality of the modeling. On this basis, the effects of axial compression ratio, effective prestress, vertical steel plate thickness of beam steel sleeve, bolt position and stiffening rib on the seismic performance of prestressed sleeve assembled concrete frame joints were studied, and the optimal design parameters were obtained. The results show that the axial compression ratio should be controlled in the range of 0.05 ～ 0.3, the effective prestress should be controlled in the range of 0.3f_ptk ～ 0.7f_ptk, the vertical steel plate thickness of beam steel sleeve should be controlled between 10 ～ 15mm, the bolt position should be controlled in the range of 90 ～ 100mm, and the stiffening rib should be arranged on both sides of the upper and lower sides of the beam steel sleeve, the size is appropriately relaxed according to the width-thickness ratio of 12.更多还原