|本期目录/Table of Contents|

[1]赵阳,聂少锋,周天华,等.冷弯薄壁型钢六肢拼合截面柱轴压性能研究[J].建筑科学与工程学报,2026,(02):42-50.[doi:10.19815/j.jace.2025.10005]
　ZHAO Yang,NIE Shaofeng,ZHOU Tianhua,et al.Study on axial compression behaviour of cold-formed thin-walled steel six-limbs built-up section columns[J].Journal of Architecture and Civil Engineering,2026,(02):42-50.[doi:10.19815/j.jace.2025.10005]
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
期数:
2026年02期
页码:
42-50
栏目:
建筑结构
出版日期:
2026-03-30

文章信息/Info

Title:
Study on axial compression behaviour of cold-formed thin-walled steel six-limbs built-up section columns
文章编号:
1673-2049(2026)02-0042-09
作者:
赵阳1,2,聂少锋1,周天华1,刘向斌2,桑刘睿3,王旭东1
(1. 长安大学 建筑工程学院,陕西 西安 710061; 2. 长安大学 基建处,陕西 西安 710064; 3. 长安大学 理学院,陕西 西安 710061)
Author(s):
ZHAO Yang1,2, NIE Shaofeng1, ZHOU Tianhua1, LIU Xiangbin2, SANG Liurui3, WANG Xudong1
(1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. Infrastructure Department, Chang'an University, Xi'an 710064, Shaanxi, China; 3. School of Sciences, Chang'an University, Xi'an 710061, Shaanxi, China)
关键词:
冷弯薄壁型钢;  六肢拼合柱;  试验研究;  轴压性能
Keywords:
cold-formed thin-walled steel;  six-limbs built-up column;  experimental study;  axial compression behaviour
分类号:
TU392.5
DOI:
10.19815/j.jace.2025.10005
文献标志码:
A
摘要:
为研究冷弯薄壁型钢六肢拼合截面柱的轴压性能,对12根六肢拼合截面冷弯薄壁型钢柱进行轴压试验研究,得到了试件的荷载-轴向位移曲线、荷载-柱中挠度曲线、荷载-应变曲线和极限承载力,并分析了试件的屈曲模式和破坏模式。利用有限元分析软件ANSYS建立六肢拼合柱的精细化有限元模型,并以此为基础开展系统性研究,探究长细比、腹板高厚比等参数对拼合柱力学性能的影响规律。结果表明:轴压短柱试件的屈曲模式主要为局部-畸变相关屈曲,轴压长柱试件的主要破坏模式为局部-畸变-整体相关屈曲; 拼合柱试件的极限承载力与刚度均随其长细比及腹板高厚比的增大而减小; 当长细比从18.0增至216.7(90系列)及从12.4增至221.1(140系列)时,极限承载力分别下降81.76%与82.71%; 腹板高厚比由46.0增至115.0(90系列)及由71.5增至178.8(140系列)时,不同长度试件的承载力降幅达63.0%～88.0%。
Abstract:
In order to investigate the axial compression behaviour of cold-formed thin-walled steel six-limbs built-up section columns, 12 such columns were subjected to axial compression tests. The load-axial displacement curves, load-mid-column deflection curves, load-strain curves, and ultimate bearing capacities of the specimens were obtained. The buckling modes and failure modes of the specimens were analyzed. Using the finite element analysis software ANSYS, a refined finite element model of the six-limbs built-up column was established, and systematic research was conducted to explore the influence of parameters such as slenderness ratio and web height-to-thickness ratio on the mechanical performance of the built-up column. The results show that the buckling mode of short axial compression columns is primarily local-distortional related buckling, while the main failure mode of long axial compression columns is local-distortional-global related buckling. The ultimate bearing capacity and stiffness of the built-up columns decrease as the slenderness ratio and web height-to-thickness ratio increase. When the slenderness ratio increases from 18.0 to 216.7(90 series)and from 12.4 to 221.1(140 series), the ultimate bearing capacity decrease by 81.76% and 82.71%, respectively. When the web height-to-thickness ratio increases from 46.0 to 115.0(90 series)and from 71.5 to 178.8(140 series), the bearing capacity reduction of specimens with different lengths reaches 63.0%-88.0%.

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备注/Memo

备注/Memo:
收稿日期:2025-10-02
基金项目:国家自然科学基金项目(51878055); 陕西省自然科学基础研究计划项目(2025JC-YBMS-385)
作者简介:赵 阳(1993-),男,工程师,E-mail:190103zhao@chd.edu.cn。
通信作者:聂少锋(1981-),男,工学博士,教授,E-mail:niesf@chd.edu.cn。
Author resume: ZHAO Yang(1993-), male, engineer, E-mail: 190103zhao@chd.edu.cn; NIE Shaofeng(1981-), male, PhD, professor, E-mail: niesf@chd.edu.cn.
更新日期/Last Update: 2026-04-01