【摘要】：提出一種開菱形孔鋼板墻,采用有限元程序Abaqus對(duì)開孔參數(shù)和蝶形帶參數(shù)進(jìn)行數(shù)值分析,研究不同參數(shù)變化對(duì)其抗震性能的影響,結(jié)果表明:增大加勁肋寬度時(shí),小高寬比開孔墻比大高寬比開孔墻的臨界屈曲荷載增幅較大;當(dāng)增大開孔參數(shù)α或β,或減小γ、θ,初始剛度和極限承載力都將增大,但延性將變差,耗能性能減弱,建議合理選擇參數(shù)滿足α≤0.25且β≤0.25,使蝶形帶以彎曲變形為主;相對(duì)而言,大高寬比的開孔鋼板墻具有更好的延性和耗能效率;初始缺陷幅值較小時(shí),其對(duì)極限承載力的影響較小。采用壁式框架對(duì)開菱形孔鋼板墻模型進(jìn)行簡化,分析表明該模型能滿足工程精度要求。
[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 偽 or 尾 is increased, or the 緯, 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 偽 鈮，

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