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为研究V形偏心支撑钢框架耗能单元的抗震性能,利用有限元软件ABAQUS建立模型并进行了数值分析,研究了梁柱线刚度比、耗能段长度、轴压比变化对其抗震性能的影响。研究表明:V形偏心支撑钢框架具有良好的滞回能力,梁柱线刚度比越大,其承载力越高、刚度越大,但耗能能力和延性越差;耗能段长度越大,其承载力越低、刚度越小,但延性几乎不变;轴压比越大,其承载力越低、耗能能力越差,轴压比大于0.6时,轴压比增大其刚度和延性呈减弱趋势。
In order to study the seismic performance of V-shaped eccentric supported steel frame energy dissipation unit, the finite element software ABAQUS was used to establish the model and conduct numerical analysis. The effects of stiffness ratio, energy dissipation section length and axial compression ratio on the seismic performance influences. The results show that the V-shaped eccentric steel frame has good hysteretic capacity. The greater the stiffness ratio of the beam-column is, the higher the bearing capacity is. The higher the stiffness is, the worse the energy dissipation and ductility are. The lower the bearing capacity, the lower the stiffness, but the ductility is almost unchanged. The larger the axial compression ratio is, the lower the bearing capacity is, and the poorer the energy dissipation is. When the axial compression ratio is greater than 0.6, the axial compression ratio increases its stiffness and ductility Weakening trend.