开菱形孔钢板墙性能参数分析
发布时间：2018-12-14 00:31
【摘要】：提出一种开菱形孔钢板墙,采用有限元程序Abaqus对开孔参数和蝶形带参数进行数值分析,研究不同参数变化对其抗震性能的影响,结果表明:增大加劲肋宽度时,小高宽比开孔墙比大高宽比开孔墙的临界屈曲荷载增幅较大;当增大开孔参数α或β,或减小γ、θ,初始刚度和极限承载力都将增大,但延性将变差,耗能性能减弱,建议合理选择参数满足α≤0.25且β≤0.25,使蝶形带以弯曲变形为主;相对而言,大高宽比的开孔钢板墙具有更好的延性和耗能效率;初始缺陷幅值较小时,其对极限承载力的影响较小。采用壁式框架对开菱形孔钢板墙模型进行简化,分析表明该模型能满足工程精度要求。
[Abstract]:A new type of steel plate wall with diamond hole is proposed. The parameters of perforation and butterfly belt are numerically analyzed by finite element program Abaqus. The effects of different parameters on the seismic performance of the wall are studied. The results show that when the width of stiffener is increased, The critical buckling load of the open-hole wall with small aspect ratio is larger than that of the open-hole wall with large aspect ratio. When the opening parameter 伪 or 尾 is increased, or the 纬, 胃 is decreased, the initial stiffness and ultimate bearing capacity will increase, but the ductility will become worse and the energy dissipation performance will weaken. It is suggested that the reasonable selection of parameters can satisfy 伪 鈮，
本文编号：2377549
[Abstract]:A new type of steel plate wall with diamond hole is proposed. The parameters of perforation and butterfly belt are numerically analyzed by finite element program Abaqus. The effects of different parameters on the seismic performance of the wall are studied. The results show that when the width of stiffener is increased, The critical buckling load of the open-hole wall with small aspect ratio is larger than that of the open-hole wall with large aspect ratio. When the opening parameter 伪 or 尾 is increased, or the 纬, 胃 is decreased, the initial stiffness and ultimate bearing capacity will increase, but the ductility will become worse and the energy dissipation performance will weaken. It is suggested that the reasonable selection of parameters can satisfy 伪 鈮，
本文编号：2377549
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