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Analyses of Through-Diaphragm Connections to CFT Columns

机译：跨膜到CFT色谱柱连接的分析

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摘要

Available theoretical equations for the shear capacity of composite joints vary in their assumptions for the shear deformation mechanisms and give different equations for calculating its shear strength. This paper discusses previously proposed equations for joint shear capacity, and suggests recommendations for obtaining more accurate predictions. Finite element analyses of through diaphragm connections to CFT columns were carried out in ABAQUS. ABAQUS results and theoretical estimations of the shear capacities were then used to define the properties of a rotational spring in a joint element in OpenSEES representing the shear deformation behavior of the joint. The OpenSEES and ABAQUS results were validated with experimental results from the literature. The results show that: (1) the steel tube flanges and not diaphragms dominate the shear deformation of the joint; and (2) the global behavior of the connection is very sensitive to shear capacity of the joint in joint yielding case.
机译：复合节理的抗剪承载力的可用理论方程在其对剪切变形机制的假设中有所不同，并给出了用于计算其抗剪强度的不同方程。本文讨论了先前提出的联合剪力方程，并提出了获得更准确预测的建议。在ABAQUS中对与CFT色谱柱的直通隔膜连接进行了有限元分析。然后，ABAQUS结果和剪切能力的理论估计值被用来定义OpenSEES中代表关节剪切变形行为的关节元件中旋转弹簧的特性。 OpenSEES和ABAQUS的结果已得到文献的实验结果验证。结果表明：（1）钢管的法兰而不是隔板支配了接头的剪切变形。 （2）在屈服情况下，连接的整体行为对接头的剪切能力非常敏感。

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  • 来源
  • 会议地点 North Queensland(AU)
  • 作者

    Liping Kang; Roberto T. Leon; Xilin Lu;

  • 作者单位

    Staye Key Laboratory of Disaster Reduction in Civil Engineering, Tongji Univ., Shanghai 200092, PRC;

    The Via Dept. of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24061;

    Staye Key Laboratory of Disaster Reduction in Civil Engineering, Tongji Univ., Shanghai 200092, PRC;

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  • 正文语种 eng
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