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首页> 外文期刊>Engineering Structures >Sensitivity analysis of geometrical design parameters on the compressive strength of the vertical inner-plate reinforced square hollow section T-joints: A finite element study
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Sensitivity analysis of geometrical design parameters on the compressive strength of the vertical inner-plate reinforced square hollow section T-joints: A finite element study

机译：几何设计参数对垂直内板增强方空心截面T关节抗压强度的敏感性分析：有限元研究

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摘要

In present study, the normalized axial compressive strength (Q(u)) of the vertical inner-plate reinforced (VIPR) square hollow section (SHS) T-joints was systematically investigated under various geometrical design parameters of the joint, such as width ratio of the brace and the chord (beta), thickness ratio of the vertical inner plate and chord flange (tau(ip)) ratio of the outstretch length of the vertical inner plate from the brace to the width of the chord (gamma(ip)), height and width ratio of the brace (eta(1)). First, a finite element (FE) model of the VIPR SHS T-joint was developed and validated by using experimental data. Then, a large scale of parametric studies was carried out to identify the critical geometrical design parameters that influence the Q(u) of the VIPR SHS T-joint. The results show that Q(u) increases with the increase of beta, and the rate of increase becomes more obvious under a large beta. In addition, under a relatively small beta (i.e. beta 0.6), the yielding of the chord flange is mainly controlled by the vertical inner plate, whereas the yielding of the chord flange is controlled by the brace under a large beta. It also demonstrates that the vertical inner plate can mitigate the risk of buckling failure of chord web, and Q(u) increases with the increase of gamma(ip). Furthermore, this study proposed an empirical equation which could potentially be used by the practicing engineers to evaluate the axial compressive strength of VIPR SHS T-joints under various geometrical design parameters.
机译：在本研究中，在接头的各种几何设计参数下系统地研究了垂直内板增强（VIPR）方中部分（SHS）T关节的归一化轴向压缩强度（Q（U）），例如宽度比支架和弦（β），垂直内板的厚度比和弦法兰（TAU（IP））与垂直内板的伸出长度的比率从支撑到弦的宽度（伽玛（IP） “括号”（ETA（1））的高度和宽度比。首先，通过使用实验数据开发和验证VIPR SHS T关节的有限元素（FE）模型。然后，进行大规模的参数研究以识别影响VIPR SHS T关节的Q（U）的临界几何设计参数。结果表明，随着β的增加，Q（U）增加，并且在大β下增加速度变得更加明显。另外，在相对较小的β（即beta <0.6）下，弦凸缘的屈服主要由垂直内板控制，而弦凸缘的屈服由大β下的支架控制。它还表明，垂直内板可以减轻屈曲Web的屈曲失败的风险，并且随着伽马（IP）的增加，Q（U）增加。此外，该研究提出了一种经验方程，其可能由实践工程师使用，以评估VIPR SHS T关节在各种几何设计参数下的轴向抗压强度。

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  • 来源
    《Engineering Structures》 |2020年第1期|110308.1-110308.14|共14页
  • 作者

    Chang Hongfei; Zuo Wenkang; Xia Junwu; Xu Bo; Ma Renwei; Zhang Lihai;

  • 作者单位

    China Univ Min & Technol JiangSu Key Lab Environm Impact & Struct Safety E Xuzhou Jiangsu Peoples R China|China Univ Min & Technol State Key Lab Geomech & Deep Underground Engn Xuzhou Jiangsu Peoples R China;

    China Univ Min & Technol JiangSu Key Lab Environm Impact & Struct Safety E Xuzhou Jiangsu Peoples R China;

    China Univ Min & Technol JiangSu Key Lab Environm Impact & Struct Safety E Xuzhou Jiangsu Peoples R China|China Univ Min & Technol State Key Lab Geomech & Deep Underground Engn Xuzhou Jiangsu Peoples R China;

    China Univ Min & Technol JiangSu Key Lab Environm Impact & Struct Safety E Xuzhou Jiangsu Peoples R China;

    China Univ Min & Technol JiangSu Key Lab Environm Impact & Struct Safety E Xuzhou Jiangsu Peoples R China;

    Univ Melbourne Dept Infrastruct Engn Melbourne Vic 3010 Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Axial compressive strength; Vertical inner plate; Square hollow section; T-joints; Finite element analysis;

    机译：轴向抗压强度;垂直内板;方形中空部分;T关节;有限元分析;

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