[1]马宏伟,徐健聪,吴文斌,等.异形单层网壳结构的整体稳定性研究及关键节点分析[J].西安建筑科技大学学报(自然科学版),2024,56(01):47-56.[doi:10.15986/j.1006-7930.2024.01.007]
　MA Hongwei,XU Jiancong,WU Wenbin,et al.Study on overall stability of specialshaped single-layer reticulated shell structure and its tubular joint analysis[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2024,56(01):47-56.[doi:10.15986/j.1006-7930.2024.01.007]
点击复制

异形单层网壳结构的整体稳定性研究及关键节点分析()
分享到：

西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
56
期数:
2024年01期
页码:
47-56
栏目:
出版日期:
2024-02-28

文章信息/Info

Title:
Study on overall stability of specialshaped single-layer reticulated shell structure and its tubular joint analysis
文章编号:
1006-7930(2024)01-0047-10
作者:
马宏伟1; 徐健聪1; 吴文斌1; 莫振忠2
（1.华南理工大学 土木与交通学院，广东 广州 510641；2.广东廷旭建筑工程有限公司，广东 广州 510641）
Author(s):
MA Hongwei1;  XU Jiancong1;  WU Wenbin1;  MO Zhenzhong2
（1.School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;2.Guangdong Tingxu Construction Engineering Co., Ltd., Guangzhou 510641, China）
关键词:
单层网壳结构; 整体稳定; 相贯节点; 有限元分析
Keywords:
single layer reticulated shell structure;  overall stability;  tubular joint;  finite element analysis
分类号:
TU392.3
DOI:
10.15986/j.1006-7930.2024.01.007
文献标志码:
A
摘要:
单层网壳结构属于缺陷敏感结构，整体稳定问题是结构设计的关键.单层网壳结构可以采用空间相贯节点，有必要对节点进行三维实体有限元分析，在此基础上研究节点的力学性能.本文总结了单层网壳结构整体稳定分析的方法，归纳了空间相贯节点三维实体有限元分析方法；针对异形单层网壳结构，研究了结构的静力性能、结构网格与建筑形状对结构承载能力的影响，确定了结构的弹性稳定承载力和弹塑性稳定承载力；对空间相贯节点进行了有限元分析，得到节点处应力的分布情况，并研究了节点隐蔽部位有无焊缝对节点力学性能的影响.结果表明：异形单层网壳的曲率变化和结构网格对关键部位处杆件受力影响较大；稳定承载力对单层网壳结构起控制作用，对此异形单层网壳进行弹塑性稳定分析，结构安全系数达到24；隐蔽部位焊缝对节点承载力的影响较大，设置隐蔽部位焊缝后，节点处各杆件的最大应力可减小20%以上.
Abstract:
The single-layer reticulated shell structure is a defectsensitive structure, and the overall stability is the key to structural design. Multiplanar tubular joints can be used in single-layer reticulated shell structures, so it is necessary to carry out three-dimensional solid finite element analysis of the joints, and study the mechanical properties of the joints on this basis. In this paper, the overall stability analysis method of singlelayer reticulated shell structure and the threedimensional solid finite element analysis method of multiplanar tubular joints are summarized. For the special-shaped singlelayer reticulated shell structure, the static performance of the structure, the influence of structural grid and building shape on the structural bearing capacity are studied, and the elastic stability bearing capacity and the elasto-plastic stability bearing capacity of the structure are determined. The finite element analysis of multiplanar tubular joints is carried out to obtain the stress distribution of the joints, and the influence of the hidden part of the joints with or without welds on the mechanical properties of the joints is studied. The results show that the curvature change and structure mesh of the special-shaped single-layer reticulated shell have a great influence on the stress of key members, and the stability bearing capacity plays a controlling role in the single-layer reticulated shell structure. The elasto-plastic stability analysis of the special-shaped single-layer reticulated shell shows that the structural safety factor reaches 24. The weld in the hidden part has a great influence on the bearing capacity of the joint, so after setting the weld in the hidden part, the maximum stress of each member of one joint can be reduced by more than 20%.

参考文献/References:

［1］MORRIS N F. Effect of imperfections on lattice shells［J］. Journal of Structural Engineering, 1991, 118(6):1722-1723.
［2］曹正罡, 孙瑛, 范峰, 等. 单层柱面网壳弹塑性稳定性能研究［J］. 土木工程学报, 2009, 42(3): 55-59.
CAO Zhenggang, SUN Ying, FAN Feng, et al. Elastoplastic stability of single-layer cylindrical reticulated shells［J］. China Civil Engineering Journal, 2009, 42(3): 55-59.
［3］BRUNO L, SASSONE M, VENUTI F. Effects of the equivalent geometric nodal imperfections on the stability of single layer grid shells［J］. Engineering Structures, 2016, 112: 184-199.
［4］YU P, YUN W J, Stéphane B, et al. Static stability analysis of singlelayer reticulated spherical shell with kiewitt-sunflower type［J］. International Journal of Steel Structures, 2021, 21(5): 1859-1877.
［5］蔡健, 贺盛, 姜正荣, 等. 单层网壳结构稳定分析中初始几何缺陷最大值的研究［J］.建筑结构学报, 2015, 36(6): 86-92.
CAI Jian, HE Sheng, JIANG Zhengrong, et al. Investigation on maximum value of initial geometric imperfection in stability analysis of single layer reticulated shells［J］. Journal of Building Structures, 2015, 36(6): 86-92.
［6］薛雪. 某马蹄莲形单层网壳结构稳定性分析［D］. 武汉：武汉大学, 2018.
XUE Xue. Stability analysis of single laver reticulated shell with calla lily appearance［D］. Wuhan:Wuhan University, 2018.
［7］PAUL J C, MAKINO Y, KUROBANE Y. Ultimate resistance of unstiffened multiplanar tubular TT‐ and KK-joints［J］. Journal of Structural Engineering, 1994, 120(10): 2853-2870.
［8］FORTIN C S, REQUENA J A V, FORTI T L D. Parametric study of tubular KK multiplanar steel connections［J］. Journal of Constructional Steel Research, 2015, 114: 188-195.
［9］GHO W M, YANG Y, GAO F. Failure mechanisms of tubular CHS joints with complete overlap of braces［J］.Thin-Walled Structures, 2006, 44(6): 655-666.
［10］王鹏, 王湛, 潘建荣, 等.空间隔板焊接X形圆钢管相贯节点受力性能试验研究［J］. 建筑结构学报, 2019, 40(3): 221-229.
WANG Peng, WANG Zhan, PAN Jianrong, et al. Investigation on mechanical behavior of Xshaped welded spatial partition plate tubular joints［J］. Journal of Building Structures, 2019, 40(3): 221-229.
［11］杨文伟, 王秀丽. 钢管桁架结构K形搭接节点抗震性能试验研究［J］. 建筑结构学报, 2013, 34(1): 85-92.
YANG Wenwei, WANG Xiuli. Experimental research on seismic behavior of unstiffened overlapped CHS K-joints［J］. Journal of Building Structures, 2013, 34(1): 85-92.
［12］中华人民共和国住房和城乡建设部. 钢结构设计标准: GB 50017—2017［S］. 北京: 中国建筑工业出版社, 2017.
Ministry of Housing and UrbanRural Development of the People′s Republic of China. Standard for design of steel structures: GB 50017—2017［S］. Beijing: China Architecture & Building Press, 2017.
［13］陈昕, 沈世钊. 单层穹顶网壳的荷载-位移全过程及缺陷分析［J］. 建筑结构学报, 1992(3): 11-18.
CHEN Xin, SHEN Shizhao. Complete loaddeflection response and imperfection analysis of singlelayer lattice dome［J］. Journal of Building Structures, 1992(3): 11-18.
［14］中华人民共和国住房和城乡建设部. 空间网格结构技术规程: JGJ 7—2010［S］. 北京: 中国建筑工业出版社, 2010.
Ministry of Housing and Urban-Rural Development of the People′s Republic of China. Technical specification for space frame structures: JGJ 7—2010［S］. Beijing: China Architecture & Building Press, 2010.
［15］中华人民共和国住房和城乡建设部. 建筑结构荷载规范: GB 50009—2012［S］. 北京: 中国建筑工业出版社, 2012.
Ministry of Housing and Urban-Rural Development of the People′s Republic of China. Load code for the design of building structures: GB 50009—2012［S］. Beijing: China Architecture & Building Press, 2012.
［16］中华人民共和国住房和城乡建设部. 建筑结构可靠性设计统一标准: GB 50068—2018［S］. 北京: 中国建筑工业出版社, 2018.
Ministry of Housing and Urban-Rural Development of the People′s Republic of China. Unified standard for reliability design of building structures: GB 50068—2018［S］. Beijing: China Architecture & Building Press, 2018.
［17］FORDEB W R, STIEMER S F. Improved arc length orthogonality methods for nonlinear finite element analysis［J］. Computers & Structures, 1987, 27(5): 625-630.

相似文献/References:

[1]杨应华,张振彬.Q460高强钢焊接工形截面梁整体稳定分析[J].西安建筑科技大学学报(自然科学版),2014,46(05):651.[doi:10.15986/j.1006-7930.2004.05.006]
　YANG Yinghua,ZHANG Zhenbin.Analysis of lateral-torsional buckling of Q460 highstrength steel welded I-section beams[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2014,46(01):651.[doi:10.15986/j.1006-7930.2004.05.006]

备注/Memo

备注/Memo:
收稿日期:2022-07-07修回日期:2022-09-09
基金项目:亚热带建筑科学国家重点实验室开放课题（2018ZB29）
第一作者:马宏伟（1973—），男，博士，副教授，主要从事钢结构和组合结构研究．E-mail：hwma@scut.edu.cn
更新日期/Last Update: 2024-04-08