Calculation formula of SCF for CHS-CFSHS welded T-joints with brace under axial tension

被引：0
|
作者：
Yang D.-L. [1 ,2 ]
Tong L.-W. [1 ]
机构：
[1] School of Civil Engineering, Tongji University, Shanghai
[2] School of Architecture and Civil Engineering, University of Huanghuai, Zhumadian
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2019年 / 49卷 / 06期
关键词：
Calculation formula of SCF; CHS-CFSHS welded T-joints; Fatigue properties; Parameters analysis; Stress concentration factors (SCF); Structural engineering;
D O I：
10.13229/j.cnki.jdxbgxb20180737
中图分类号：
学科分类号：
摘要：
Based on the finite element method of SCF of CHS-CFSHS T-joints with reliable accuracy, 160 finite element models were established to calculate SCF of CHS-CFSHS T-joints when brace is under axial tension which are made up of circular hollow section (CHS) braces and concrete-filled square hollow section (CFSHS) chords. Parameters affecting SCF of the joint were analyzed. In addition, while grasping the influence law of each parameter on SCF, it proposed a calculation formula for SCF when brace is under axial tension, and made a comparison between the calculated value and finite element data. The results show that the six positions of 0°, 60° and 90° on the brace and the chord basically cover the position at which maximum SCF may occur when brace is under axial tension; and quadratic functions of β and 2γ as well as power function of τ should be included in the calculation formula of SCF. Moreover, the influences of the three parameters are coupled with each other, and the regressive calculation formulas of SCF have reliable accuracy. © 2019, Jilin University Press. All right reserved.
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页码：1891 / 1899
页数：8
相关论文
共 23 条
  • [1] IIW: Recommendations for fatigue design of welding joints and components, (2008)
  • [2] Packer J.A., Concrete-filled rectangular hollow section X and T connections, pp. 382-391, (1991)
  • [3] van Wingerde A.M., The fatigue behaviour of T-and X-joints made of square hollow sections, pp. 1-180, (1992)
  • [4] van Wingerde A.M., Packer J.A., Wardenier J., Criteria for the fatigue assessment of hollow structural section connections, Journal of Constructional Steel Research, 35, 1, pp. 71-115, (1995)
  • [5] Zhao X.-L., Herion S., Packer J.A., Et al., Design Guide for Circular and Rectangular Hollow Section Welded Joints under Fatigue Loading, (2001)
  • [6] Cao S.-S., Lei J.-Q., Fatigue Life Prediction of Steel Structure Considering Interval uncertainty, Journal of Jilin University(Engineering and Technology Edition), 46, 3, pp. 804-810, (2016)
  • [7] Sakai Y., Hosaka T., Isoe A., Et al., Experiments on concrete filled and reinforced tubular K-joints of truss girder, Journal of Constructional Steel Research, 60, 3-5, pp. 683-699, (2004)
  • [8] Tong L.-W., Wang K., Experimental study on stress concentration factors of concrete-filled circular hollow section T-joints under axial loading, China: Pacific Structural Steel Conference 2007, 2
  • [9] Tong L.-W., Sun C.-Q., Chen Y.-Y., Et al., Experimental comparison in hot spot stress between CFCHS and CHS K-joints with gap, Proceedings of 12th International Symposium on Tubular Structures, pp. 389-395, (2008)
  • [10] Gu M., Tong L.W., Zhao X.L., Et al., Stress intensity factors of surface cracks in welded T-joints between CHS brace and concrete-filled CHS chord, Tubular Structures XII: Proceedings of Tubular Structures XII, (2008)
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