Axial hysteretic behavior of vertical inner plate reinforced square hollow section tubular T-joints

被引：0
|
作者：
Chang H. [1 ,2 ]
Zhou L. [1 ]
Hu L. [1 ]
Zhou J. [1 ]
Xia J. [1 ,2 ]
机构：
[1] Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining & Technology, Xuzhou
[2] State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining & Technology, Xuzhou
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2021年 / 52卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Axial hysteretic behavior; Experimental study; Finite element analysis; Square tubular; T-joint; Vertical inner plate reinforced;
D O I：
10.11817/j.issn.1672-7207.2021.05.020
中图分类号：
学科分类号：
摘要：
In order to study the axial hysteretic behavior of vertical inner plate reinforced square tubular T-joints(IPT), two groups of vertical inner plate reinforced square tubular T-joints were tested under axial cyclic loading, and compared with the specimens of unreinforced(URT) and doubler-plate reinforced(DPT) joints. Finally, the effect of dimension and configuration of vertical inner plate was investigated by finite element analysis, and the configuration suggestions for the inner plate were proposed for design reference. The results show that the axial hysteretic behavior of the IPT specimens is superior to the corresponding URT specimens, and the bearing capacity and energy dissipation capacity of the IPT specimens are more than one times than that of URT specimens. The increase of bearing capacity is more significant for specimens with low brace-to-chord width ratio, and the vertical inner plate is more effective to increase the energy dissipation capacity for specimens with high brace-to-chord width ratio. The maximum energy dissipation capacity and the tension and compression symmetry of IPT specimen are higher than that of DPT specimen. The length of inner plate is proved to be the key parameter. The opening on the inner plate will not weaken the bearing and energy absorption capacity of IPT joints. © 2021, Central South University Press. All right reserved.
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页码：1591 / 1600
页数：9
相关论文
共 23 条
  • [1] LESANI M, BAHAARI M R, SHOKRIEH M M., Detail investigation on un-stiffened T/Y tubular joints behavior under axial compressive loads, Journal of Constructional Steel Research, 80, pp. 91-99, (2013)
  • [2] FAN Zhong, YANG Su, LUAN Haiqiang, Research progress and practice of design of spatial structure joints, Journal of Building Structures, 32, 12, pp. 1-15, (2011)
  • [3] SHAO Yongbo, LIE S T, CHIEW S P, Et al., Hysteretic performance of circular hollow section tubular joints with collar-plate reinforcement, Journal of Constructional Steel Research, 67, 12, pp. 1936-1947, (2011)
  • [4] CHANG Hongfei, XIA Junwu, GUO Zhen, Et al., Experimental study on the axial compressive strength of vertical inner plate reinforced square hollow section T-joints, Engineering Structures, 172, pp. 131-140, (2018)
  • [5] ZHU Lei, ZHAO Yan, LI Shuwen, Et al., Numerical analysis of the axial strength of CHS T-joints reinforced with external stiffeners, Thin-Walled Structures, 85, pp. 481-488, (2014)
  • [6] LI Tao, SHAO Yongbo, ZHANG Jichao, Study on static strength of tubular joints reinforced with vertical inner plate, Engineering Mechanics, 27, 4, pp. 133-140, (2010)
  • [7] WANG Ge, ZHANG Jichao, Study on application of igp-stiffen chs joints in Guangdong science center, Industrial Construction, 37, 10, pp. 93-97, (2007)
  • [8] ZHU Lei, YANG Kai, BAI Yu, Et al., Capacity of steel CHS X-joints strengthened with external stiffening rings in compression, Thin-Walled Structures, 115, pp. 110-118, (2017)
  • [9] ZHANG Qiaozhen, ZHOU Hongbin, ZHANG Mingli, Nonlinear finite element analysis of the ultimate bearing capacity of reinforced circular tubular gapped k-joints with a flashboard, Steel Construction, 21, 1, pp. 54-57, (2006)
  • [10] CHANG Hongfei, XU Wei, ZUO Wenkang, Et al., Compressive characteristics of vertical inner plate reinforced square hollow section tubular joints, Journal of Central South University(Science and Technology), 50, 9, pp. 2242-2251, (2019)
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