Hot Spot Stress Concentration Factor of Welded Tubular T-Joints in Concrete-Filled Steel Tube Truss

被引：0
|
作者：
Wei X. [1 ]
Zhao J. [1 ]
Xiao L. [1 ]
Wu C. [2 ]
Wen Z. [1 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu
[2] Institute of Magnetic Levitation and Electromagnetic Propulsion, China Aerospace Science and Industry Aerodynamicsn Technology Academy, Beijing
来源：
Zhongguo Tiedao Kexue/China Railway Science | 2022年 / 43卷 / 02期
关键词：
Concrete-filled steel tube; Finite element analysis; Hot spot stress concentration factor; Truss; Welded tubular T-joint;
D O I：
10.3969/j.issn.1001-4632.2022.02.01
中图分类号：
学科分类号：
摘要：
Models of the welded tubular T-joints in concrete-filled steel tube trusses were established using the finite element software ANSYS, to study the hot spot stress concentration factor (SCF) of the tubular joint under axial tension in the brace was studied. Results show that the SCF at the chord crown point of the tubular T-joint is positively correlated with the brace-to-chord diameter ratio, the chord wall slenderness ratio and the brace-to-chord thickness ratio. The SCF at the chord saddle point is positively correlated with the chord wall slenderness ratio and the brace-to-chord thickness ratio, but is negatively correlated with the brace-to-chord diameter ratio. Compared with the chord, the whole level for the SCF of the brace is lower, and its variation with geometric parameters is smaller. The distribution pattern of the SCF along the chord intersection line of the tubular joint is related to the brace-to-chord diameter ratio and chord wall slenderness ratio, whereas the pattern is slightly influenced by the brace-to-chord thickness ratio. The maximum SCF of the tubular joint is positively correlated with the chord wall slenderness ratio and the brace-to-chord thickness ratio. The variation law of the maximum SCF with brace-to-chord diameter ratio is correlated to the chord wall slenderness ratio. Based on the finite element calculation results, the formulas of the maximum SCF for welded tubular T-joints in concrete-filled steel tubular trusses can be deduced. © 2022, Editorial Department of China Railway Science. All right reserved.
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页码：1 / 9
页数：8
相关论文
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