Y形偏心支撑钢框架耗能段长度研究

发布时间：2018-12-17 15:25

【摘要】：为研究耗能段长度对Y形偏心支撑钢框架滞回性能的影响,应用ABAQUS 13.0建立了8个不同耗能段长度的Y形偏心支撑钢框架模型并对其进行了数值分析,研究了耗能段长度变化对Y形偏心支撑钢框架承载力、刚度、耗能能力和延性的影响。结果表明:Y形偏心支撑钢框架具有良好的滞回性能,耗能段长度变化对Y形偏心支撑钢框架的承载力、刚度、耗能能力及延性均有较大影响;随着耗能段长度的增大,Y形偏心支撑钢框的承载力及刚度呈降低趋势,功比指数和延性系数先增大后降低。此外,根据有限元分析结果确定了Y形偏心支撑钢框架耗能段长度的合理取值。
[Abstract]:In order to study the effect of energy dissipation length on hysteretic behavior of Y-shaped eccentrically braced steel frame, eight Y-shaped eccentrically braced steel frames with different energy dissipation lengths were established by ABAQUS 13.0 and analyzed numerically. The influence of the length of energy dissipation section on the bearing capacity, stiffness, energy dissipation capacity and ductility of Y-shaped eccentrically braced steel frame is studied. The results show that the Y-shaped eccentrically braced steel frame has good hysteretic performance, and the variation of energy dissipation section length has great influence on the bearing capacity, stiffness, energy dissipation capacity and ductility of Y-shaped eccentrically braced steel frame. With the increase of the length of the energy dissipation section, the bearing capacity and stiffness of the Y-shaped eccentric braced steel frame tend to decrease, while the power ratio index and ductility coefficient increase first and then decrease. In addition, according to the results of finite element analysis, the reasonable value of energy dissipation section length of Y-shaped eccentrically braced steel frame is determined.
【作者单位】：陕西理工大学土木工程与建筑学院;西安建筑科技大学土木工程学院;
【分类号】：TU391

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