孙国华, 顾强, 何若全, 方有珍, 申林. 半刚接钢框架内填RC 墙结构简化分析模型[J]. 工程力学, 2012, 29(2): 149-158.
引用本文: 孙国华, 顾强, 何若全, 方有珍, 申林. 半刚接钢框架内填RC 墙结构简化分析模型[J]. 工程力学, 2012, 29(2): 149-158.
SUN Guo-hua, GU Qiang, HE Ruo-quan, FANG You-zhen, SHEN Lin. SIMPLIFIED FE MODEL OF PARTIALLY-RESTRAINED STEEL FRAME WITH RC INFILL WALLS[J]. Engineering Mechanics, 2012, 29(2): 149-158.
Citation: SUN Guo-hua, GU Qiang, HE Ruo-quan, FANG You-zhen, SHEN Lin. SIMPLIFIED FE MODEL OF PARTIALLY-RESTRAINED STEEL FRAME WITH RC INFILL WALLS[J]. Engineering Mechanics, 2012, 29(2): 149-158.

半刚接钢框架内填RC 墙结构简化分析模型

SIMPLIFIED FE MODEL OF PARTIALLY-RESTRAINED STEEL FRAME WITH RC INFILL WALLS

  • 摘要: 该文提出了一种用于分析半刚接钢框架内填RC 墙结构(简称PSRCW)滞回性能的简化分析模型(即斜向板带模型),基于混凝土应力-应变关系给出了斜向板带的轴力-位移关系曲线,采用Pivot 塑性滞回模型模拟斜向板带的力学行为。采用有限元方法分析了板带恢复力模型、板带数量及倾角对PSRCW 结构斜向板带模型的影响,结果表明Pivot 塑性滞回模型可较好地模拟斜向板带的滞回性能,可采用7 条以上板带及40°~50°之间板带倾角描述PSRCW 结构的整体性能。应用该简化模型对有关试件进行了滞回性能模拟,并与试验结果比较,两者吻合良好。

     

    Abstract: A simple inclined strip model for analyzing the hysteretic behavior of partially-restrained steel frame with reinforced concrete walls (PSRCW) is presented. The axial force vs displacement of inclined strip is derived according to the constitutive relationship of concrete, and the hysteretic rules of inclined strips is determined through multi-linear plastic pivot of non-linear link element. The main parameters of PSRCW are analyzed, including mechanical model, quantity and inclined angles of strips. The results demonstrate that multi-linear plastic pivot can be used to simulate the hysteretic behavior of inclined strip, and more than seven strips and an inclined strip angle of 40-50 degree are suggested. The comparison between the results of calculation and those of corresponding tests shows good agreement.

     

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