吕大刚, 于晓辉, 杜文晨. 基于改进Bouc-Wen模型的RC梁-柱节点抗震性能研究[J]. 工程力学, 2015, 32(增刊): 45-49,54. DOI: 10.6052/j.issn.1000-4750.2014.05.S015
引用本文: 吕大刚, 于晓辉, 杜文晨. 基于改进Bouc-Wen模型的RC梁-柱节点抗震性能研究[J]. 工程力学, 2015, 32(增刊): 45-49,54. DOI: 10.6052/j.issn.1000-4750.2014.05.S015
LÜ Da-gang, YU Xiao-hui, DU Wen-chen. STUDY ON SEISMIC PERFORMANCE OF RC BEAM-COLUMN JOINTS WITH A MODIFIED BOUC-WEN MODEL[J]. Engineering Mechanics, 2015, 32(增刊): 45-49,54. DOI: 10.6052/j.issn.1000-4750.2014.05.S015
Citation: LÜ Da-gang, YU Xiao-hui, DU Wen-chen. STUDY ON SEISMIC PERFORMANCE OF RC BEAM-COLUMN JOINTS WITH A MODIFIED BOUC-WEN MODEL[J]. Engineering Mechanics, 2015, 32(增刊): 45-49,54. DOI: 10.6052/j.issn.1000-4750.2014.05.S015

基于改进Bouc-Wen模型的RC梁-柱节点抗震性能研究

STUDY ON SEISMIC PERFORMANCE OF RC BEAM-COLUMN JOINTS WITH A MODIFIED BOUC-WEN MODEL

  • 摘要: 在传统的Bouc-Wen材料模型中引入捏缩函数,提出了一种可以考虑材料捏缩行为的改进Bouc-Wen材料模型。将该模型引入到OpenSees软件平台中,基于Joint2D节点单元,对钢筋混凝土(RC)梁-柱节点的抗震性能进行了研究。通过对两个钢筋混凝土梁-柱中节点的往复加载试验结果进行数值模拟,验证了该文提出的改进Bouc-Wen模型的合理性。进一步对RC框架梁-柱节点抗震性能的影响因素进行了研究,结果表明:截面高宽比和剪跨比对节点的剪切强度和延性影响显著。

     

    Abstract: A pinching function is introduced into the conventional Bouc-Wen material model, and an improved Bouc-Wen material model is proposed considering the pinching behavior of materials. Such a model is incorporated into the OpenSees software platform, and is then combined with the Joint2D element to study the seismic performance of the RC beam-column joints. Two hysteretic experiments of middle beam-column joints are simulated and the improved Bouc-Wen model is verified. Finally the influence factors of RC beam-column joints are examined. The results show that the aspect ratio and the shear span ratio have significant effects on the shear strength and the ductility of joints.

     

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