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为分析带支撑梁柱节点对屈曲约束支撑混凝土框架体系抗震性能的影响,建立了考虑节点性能影响的屈曲约束支撑混凝土框架模型。分别采用有限元软件OpenSEES和ABAQUS对框架中普通梁柱节点和带支撑梁柱节点进行模拟分析,证明了建模的合理性。在此基础上,用OpenSEES对三种形式的支撑框架结构的抗震性能进行对比分析,同时采用逐步增量时程分析方法对考虑支撑与梁柱节点的屈曲约束支撑混凝土框架的抗震性能进行全面评估。结果表明:所采用的带支撑梁柱节点具有良好的承载能力,考虑节点性能的支撑框架能够提高模拟精度和真实反映结构的地震反应。
In order to analyze the influence of the beam-column joints on the seismic performance of the RC frame system with buckling restraint, the buckling-restrained brace concrete frame model considering the influence of joint performance was established. The finite element software OpenSEES and ABAQUS are respectively used to simulate the ordinary beam-column joints and the beam-column joints with support beams, which proves the rationality of modeling. On this basis, the seismic performance of three kinds of supporting frame structures is analyzed by OpenSEES. Meanwhile, the incremental incremental time-history method is used to comprehensively evaluate the seismic performance of the RC frame considering buckling and restraining. . The results show that the supported beam-column joint has good bearing capacity and the support frame considering the joint performance can improve the simulation accuracy and reflect the seismic response of the structure.