[1]郑宝锋,吴步宸,张 奎,等.不锈钢圆管T形、Y形相贯节点支管受拉承载力研究[J].西安建筑科技大学学报(自然科学版),2022,54(04):508-516.[doi:10.15986/j.1006-7930.2022.04.005]
　ZHENG Baofeng,WU Buchen,ZHANG Kui,et al.Investigations on capacity of stainless steel T-and Y-joints in circular hollow sections with axial tension in brace[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2022,54(04):508-516.[doi:10.15986/j.1006-7930.2022.04.005]
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不锈钢圆管T形、Y形相贯节点支管受拉承载力研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
54
期数:
2022年04期
页码:
508-516
栏目:
出版日期:
2022-08-28

文章信息/Info

Title:
Investigations on capacity of stainless steel T-and Y-joints in circular hollow sections with axial tension in brace
文章编号:
1006-7930(2022)04-0508-09
作者:
郑宝锋1; 2; 吴步宸2; 张 奎3; 王嘉昌2; 舒赣平1; 2; 蒋庆林4
(1.东南大学 混凝土及预应力混凝土结构教育部重点实验室,江苏 南京 210096; 2.东南大学 土木工程学院,江苏 南京 210096; 3.中国建筑西北设计研究院有限公司,陕西 西安 710018; 4.江苏东阁不锈钢制品有限公司,江苏 盐城 224000)
Author(s):
ZHENG Baofeng1; 2; WU Buchen2; ZHANG Kui3; WANG Jiachang2; SHU Ganping1; 2; JIANG Qinglin4
(1.Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University,Nanjing 210096,China; 2.School of Civil Engineering,Southeast University,Nanjing 210096,China; 3.China Northwest Building Design & Research Institute Co.,Ltd,Xi'an 710018,China; 4.Jiangsu Dongge Stainless Steel Ware Co.,Ltd.,Jiangsu Yancheng 224000,China)
关键词:
不锈钢;  圆管;  T形节点;  Y形节点;  试验研究;  有限元分析;  设计方法
Keywords:
stainless steel;  circular hollow sections;  T-joints;  Y-joints;  test;  finite element analysis;  design
分类号:
TU391
DOI:
10.15986/j.1006-7930.2022.04.005
文献标志码:
A
摘要:
随着不锈钢结构的广泛应用,不锈钢相贯节点越来越多地用于建筑结构中.然而,不锈钢圆管相贯节点的性能和设计方法却鲜有研究.考虑几何因素和弦杆预加载荷对节点承载力的影响,共对6个T形和3个Y形不锈钢圆管相贯节点,进行了支管受拉承载力试验研究.获得了材料性能、破坏模式、节点承载力和载荷-变形曲线.试验结果表明:T形、Y形节点的破坏模式相似,均为节点域弦杆的塑性变形.基于试验结果建立了节点有限元分析模型,经试验验证后进行了参数化分析,以研究支管受力状态对节点承载力的影响.数值分析结果表明:不锈钢圆管T形、Y形相贯节点支管受拉承载力始终大于支管受压承载力.基于国内外设计规范中支管受拉与支管受压T形相贯节点采用相同设计公式的背景,采用文献[15]提出的不锈钢圆管T形和Y形支管受压相贯节点承载力设计公式预测节点承载力,并与CIDECT计算结果对比.结果表明:CIDECT计算结果是偏保守的,文献[15]提出的公式具有良好的准确性.
Abstract:
With the widespread application of stainless steel structures, stainless steel hollow section joints in cold-rolled tubes are increasingly used in building structures. However, the performance and design methods of stainless steel circular tubular joints are rarely studied. A total of six T-joints and three Y-joints were tested considering the effect of the geometric configurations and the preload in the chord on the behaviors of the joint. The material properties, failure modes, joint strengths and load-deformation curves were all reported. The test results showed that the failure mode of T-joints, as well as Y-joints, was the plastic deformation of the chord at the panel zone. Based on the test results, the finite element analysis model of the joint was established, and the parametric analysis was carried out to study the effect of brace load on the joint strength. The results showed that the capacity of stainless steel T- and Y-joints in circular hollow sections with brace under axial tension was always greater than that of those with brace under axial compression. According to the background of using the same design formula for both the braces under axial tension and compression in the specifications at home and abroad, the capacity of the stainless steel T- and Y-joints in circular hollow sections was finally calculated by using the formula proposed in Ref[12] and compared with predictions using the CIDECT recommendations. The results showed that the CIDECT's predictions were conservative and the formula proposed in Ref[12] had good accuracy.

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备注/Memo

备注/Memo:
收稿日期:2022-05-01修改稿日期:2022-08-08
基金项目:国家自然科学基金项目(51808110)
第一作者:郑宝锋(1984—), 男, 博士, 副教授,主要研究方向:不锈钢结构设计理论研究.E-mail:101012279@seu.edu.cn
更新日期/Last Update: 2022-08-28