Out-of-plane flexural rigidity of unstiffened eccentric rectangular hollow section joints

被引：0
|
作者：
Zhao B. [1 ]
Jiang W. [1 ]
Ke K. [2 ]
Liu C. [3 ]
机构：
[1] College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou
[2] College of Civil Engineering, Hu'nan University, Changsha
[3] School of Civil Engineering, Southwest JiaoTong University, Chengdu
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 06期
关键词：
Finite element analysis; Out-of-plane flexural rigidity; Parameterization calculation formula of joint rigidity; Rectangular hollow section(RHS); Regression analysis; Three-beam model; Unstiffened eccentric tubular joint; Yield line model;
D O I：
10.11990/jheu.201802020
中图分类号：
学科分类号：
摘要：
This work applied a theoretical model method combined with numerical analysis to establish a practical parameterized calculation formula for the out-of-plane flexural rigidity of unstiffened eccentric cross-type rectangular hollow section (UECRHS) joints. A three-beam model for calculating the elastic out-of-plane flexural rigidity of UECRHS joints was established on the basis of a yield line model and the connection deformation characteristic. Then, the theoretical formula for rigidity was established and corrected in accordance with the parametric analysis results from finite element (FE) analysis. A practical parameterized calculation formula for the out-of-plane flexural rigidity of UECRHS joints was obtained through multivariable nonlinear regression analysis. Results showed that rigidity was directly proportional to the cube of chord thickness, was linearly related to the brace width-to-chord depth ratio, and had a nearly exponential function relationship with the brace-to-chord depth ratio. Moreover, the relative errors between the out-of-plane flexural rigidity values obtained by the formula and FE results were mainly less than 10%. © 2019, Editorial Department of Journal of HEU. All right reserved.
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页码：1122 / 1127and1133
相关论文
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