Vol. 19, No. 3, pp. 262-272 (2023)
DISTRIBUTION OF RESIDUAL STRESS IN THE SPHERE-PIPE
CONNECTION WELDS OF WELDED HOLLOW SPHERICAL JOINTS
Ren-Zhang Yan 1, 2, Chang-Long Zhang 1, 2, Shuai Wang 3, Jia-Qi Liu 2 and Tao Sun 4, *
1 State Key Laboratory of Mountain Bridge and Tunnel Engineering,
Chongqing Jiaotong University, Chongqing 400074, China
2 School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
3 Chongqing Aerospace Polytechnic College, Chongqing 400021, China
4 Department of Military Facility, Army Logistics Acadmy of PLA, Chongqing 401331, China
* (Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 12 October 2022; Revised: 27 April 2023; Accepted: 10 May 2023
DOI:10.18057/IJASC.2023.19.3.7
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ABSTRACT
Welded hollow spherical joint is widely used in large-span spatial structures due to its simple structure, clear mechanical behavior and convenient connection. However, a large number of sphere-pipe connection welds at the joints will inevitably produce complex welding residual stress, which will have adverse effects on the stiffness of the joints and the overall safety of the structure. Focusing on the sphere-pipe connection welds on the hollow spherical joints, this paper keeps track of the whole process of sphere-pipe welding, analyzes and summarizes the distribution law and specific distribution mode of welding residual stress on the joints and parametrically analyzes the influence trend of the configuration dimension of joints on the distribution of welding residual stress. Studies have found that the circumferential welding residual tensile stress is mainly concentrated in and near the weld, while the compressive stress is concentrated in the outer area of the weld. The longitudinal residual stress shows the obvious bending features of external compression and internal tension along the wall thickness direction near the weld; The configuration dimension of the hollow spherical joint mainly affects the influence range of welding residual stress, that is, with the change of dimension, the welding heat-affected zone on steel pipes will vary within the area with a distance to the weld 0.6~1.35 times the diameter, and the heat-affected zone on spherical joints will vary within the area with a distance to the weld no more than 0.5 times the diameter. The above-mentioned refined research on the residual stress of the hollow spherical joint can lay a foundation for the accurate evaluation of the stiffness and overall safety of the welded hollow spherical joints.
KEYWORDS
Welded hollow spherical joint, Welding residual stress, Experiment, Refined numerical simulation
REFERENCES
[1] Zhongwei Zhao, Hongwei Zhang, Lina Xian, Haiqing Liu. Tensile strength of Q345 steel with random pitting corrosion based on numerical analysis. Thin-Walled Structures. 2020;148, 106579.
[2] ZHANG Yanhua. Principles of Welding Mechanics and Structural Integrity. Architecture & Building Press. 2007; China: Beijing.
[3] Farajian, M. Welding residual stress behavior under mechanical loading. Welding in the World. 2013; 57 (2), 157-169.
[4] Osgood W F. Mechanics[M]. Crawford: Crawford Press, 2007.
[5] Brar, G. S., and Singh, C. S. Fea of residual stress in cruciform welded joint of hollow sectional tubes. Journal of Constructional Steel Research. 2014;102, 44-58.
[6] W. Y. Wang, G. Q. Li, Y. Ge. Residual Stress Study on Welded Section of High Strength Q460 Steel After Fire Exposure. Advanced Steel Construction. 2015;11(2), 150-164.
[7] Bo Yang, Shidong Nie, Shao-Bo Kang, Gang Xiong, Ying Hu, Jubo Bai, Weifu Zhang, Guoxin Dai. Residual Stress Measurement on Welded Q345GJ Steel H-Sections by Sectioning Method and Method Improvement. Advanced Steel Construction. 2017;13(1), 78-95.
[8] Yong-Lei Xu, Yong-Jiu Shi, Yi-Ran Wu, Ling-Ye Meng. Residual Stress of Welded I Sections Fabricated from High Performance Steel: Experimental Investigation and Modelling. Advanced Steel Construction, 15(1), 1-8, 2019.
[9] Mirzaee-Sisan and A. Welding residual stresses in a strip of a pipe. International Journal of Pressure Vessels and Piping. 2018;159, 28-34.
[10] GUO Zhengxing, ZHU Zhangfeng, NIU Meng. Case Analysis and Warning of Installation Collapse Accidents of Steel Structure. Construction Technology. 2010;39 (07): 35-39.
[11] Ding Y., Qi L., Li Z.X. Mechanical calculation model for welded hollow spherical joint in spatial latticed structures. Advanced Steel Construction. 2011;7(4), 330-343.
[12] Zang Qian, LIU Hongbo, LI Yanbo, CHEN Zhihua, LI Xinghao. Mechanical properties of welded hollow spherical joints reinforced with external ribs under axial tension. Spatial Structures. 2022;28 (01): 71-78.
[13] YU Kequan, YU Jiangtao, TANG Bo. Experimental And Finite Element Analysis on The Ultimate Bearing Capacity of Hollow Spherical Joints with Ribbed Stiffener. Industrial Construction. 2011;41 (08): 85-90.
[14] CHEN Zhihua, WEN Suolin, LIU Hongbo, WANG Xiaodun, HU Hongzhi, HAN Ruijing. A Study on the Mechanical Properties of Large-Size Welded Hollow Spherical Joints of Beijing Daxing International Airport. Progress in Steel Building Structures. 2022;24 (01): 15-23.
[15] Li X. Load-carrying Capacity and Practical Design Method of Welded Hollow Spherical Joints in Space Latticed Structures. Advanced Steel Construction. 2010;6(4), 976-1000.
[16] Liao, J., Zhang, Y., Wu, J. Short-member model of reticulated shell with semi-rigid welded hollow spherical joints for elastic-plastic analysis. World Earthquake Engineering. 2010; 26 (3), 37-42.
[17] LIU Haifeng, LUO Yaozhi, XU Xian. Rigiditty of Welded Hollow Spherical Joints on Finite Element Analysis Precesion of Reticulated Shells. Engineering Mechanics. 2013;30 (01): 350-358+364.
[18] Lopez A, Puente l, Aizpurua H. Experimental and analytical studies on the rotational stiffness of joints for single-layer structures. Engineering Structures. 2010;33 (3): 731-737.
[19] Wang, X., Wang, F. Stiffness analysis of welded spherical joints with rib stiffeners. Applied Mechanics and Materials. 2011;71-78, 3756-3759.
[20] YAN Xiangyu, ZHANG Qiwu, QI Guocai, CHEN Zhihua. Study on bending stiffness of welded hollow spherical joints based on bending loading states. Journal of Experimental Mechanics. 2019; 34 (06): 945-953．
[21] Yan X, Zhang Y, Chen Z, Liu H, Zhang Q. Flexural capacity and bending stiffness of welded hollow spherical joints with H-beams. Advances in Structural Engineering. 2021;24(5):1024-1039.
[22] Liu Hongbo, Gao Haotian, Chen Zhihua. Research on reinforcing method for welded hollow spherical joints. Journal of Constructional Steel Research. 182, 2021.
[23] Hong-bo Liu, Ying-jie Zhang, Lan Wang, Zhi-hua Chen. Mechanical Performance of Welded Hollow Spherical Joints at Elevated Temperatures. Advanced Steel Construction. 2020;16(1), 1-12.
[24] Lu J, Chen Z, Liu H, Guo Z. Behavior of eccentrically loaded welded hollow spherical joints after elevated-temperature exposure. Advances in Structural Engineering. 2019;22 (6):1352-1367.
[25] ZHAO Zhongwei, WU Gang. Random Compression Capacity of Corroded Whsjs. Engineering Mechanics. 2021;38 (05): 219-228+238.]
[26] Zhao Zhongwei, Dai Bozhi, Xu Hao, Li Tianhe. Bending capacity of corroded welded hollow spherical joints with considering interaction of tension force and bending moment. Structures. 34, 2021.2656-2664
[27] Zhongwei Zhao, Pingyi Zhang, Song Zhou, Xiongtao Fan. Collapse pressure of randomly corroded spherical shell. Ocean Engineering. 2022;246, 110604.
[28] Zhao Zhong Wei, H. Zhu, Z. H. Chen. Mechanical behavior of single-layer reticulated shell connected by welded hollow spherical joints with considering welding residual stress. Welding in the World. 2016;60(1), 61-69.
[29] LIU Mingjiong. Manual of practical mechanical Engineering materials. 2004; China: Liaoning.
[30] LIU Xiaoyu. Magnetic Measurement Method to Test Steel Bridge Welding Residual Stress. Journal of Chongqing Jiaotong University (Natural Science). 2010;29 (01): 38-41+84.