- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | YAO Xingyou, HU Chengli, LIU Yafei, GUO Yanli. Axial Compression Test and Bearing Capacity Design Method of Cold-Formed Steel with Unequal-Leg Lipped Angles[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20230010
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To study the buckling performance and bearing capacity design method of the cold-formed thin-walled steel (CFTWS) with unequal-leg lipped angles under axial compression, the tests were conducted, and a finite element program was used to analyze the buckling performance and ultimate bearing capacity. Based on the direct strength method, the bearing capacity design method was presented. Firstly, the 32 CFTWS with unequal-leg lipped angles with different sections, slenderness ratios, and width-to-thickness ratios were tested under axial compression. Then, ABAQUS finite element software was used to perform parametric analysis on the buckling performance and bearing capacity of CFTWS with unequal-leg lipped angles with different width-to-thickness ratios, width ratios of legs, and slenderness ratios. Finally, the modified direct strength method for calculating the bearing capacity of CFTWS with unequal-leg lipped angles under axial compression was proposed based on the results of the test and finite element analysis. The results show that the specimens with a small width-to-thickness ratio are prone to flexural-torsional buckling, while the specimens with a large width-to-thickness ratio are prone to the local buckling or buckling related to flexural-torsional buckling and local buckling. The ultimate bearing capacity of the specimens decreases with the increase in the slenderness ratio, and the increase amplitude of the bearing capacity slows down with the increase in the width-to-thickness ratio. The reliability analysis shows that the reliability indexes of the bearing capacity of the CFTWS with unequal-leg lipped angles under axial compression calculated using the modified direct strength method are greater than 3.2, indicating that the proposed method is accurate and reliable.
| [1] |
陈明,鲁卫波,武志远,等. 双肢冷弯C型钢蒙古包刚架的平面内稳定性[J]. 西南交通大学学报,2022,57(1):215-222.
CHEN Ming, LU Weibo, WU Zhiyuan,et al. Investigation on in-plane stability of double-limb cold-formed C-shaped steel rigid frame of yurt[J]. Journal of Southwest Jiaotong University, 2022, 57(1):215-222.
|
| [2] |
ADLURI S M R, MADUGULA M K S. Flexural buckling of steel angles: experimental investigation[J]. Journal of Structural Engineering, 1996, 122(3): 309-317. doi: 10.1061/(ASCE)0733-9445(1996)122:3(309)
|
| [3] |
DINIS P B, CAMOTIM D, SILVESTRE N. On the mechanics of thin-walled angle column instability[J]. Thin-Walled Structures, 2012, 52: 80-89. doi: 10.1016/j.tws.2011.12.007
|
| [4] |
American Iron and Steel Institute. North American specification for the design of cold-formed steel structural members: AISI S100-16[S]. Washington D. C.: American Ir-on and Steel Institute, 2016.
|
| [5] |
YOUNG B. Tests and design of fixed-ended cold-formed steel plain angle columns[J]. Journal of Structural Engineering, 2004, 130(12): 1931-1940. doi: 10.1061/(ASCE)0733-9445(2004)130:12(1931)
|
| [6] |
DE BARROS CHODRAUI G M, SHIFFERAW Y, MALITE M, et al, On the stability of cold-formed steel angles undercompression[J]. Rev Esc Minas, 2007, 60(2): 355-363.
|
| [7] |
SILVESTRE N, DINIS P B, CAMOTIM D. Developments on the design of cold-formed steel angles[J]. Journal of Structural Engineering, 2013, 139(5): 680-694. doi: 10.1061/(ASCE)ST.1943-541X.0000670
|
| [8] |
ELLOBODY E, YOUNG B. Behavior of cold-formed steel plain angle columns[J]. Journal of Structural Engineering, 2005, 131(3): 457-466. doi: 10.1061/(ASCE)0733-9445(2005)131:3(457)
|
| [9] |
YOUNG B, ELLOBODY E. Buckling analysis of cold-formed steel lipped angle columns[J]. Journal of Structural Engineering, 2005, 131(10): 1570-1579. doi: 10.1061/(ASCE)0733-9445(2005)131:10(1570)
|
| [10] |
YOUNG B, CHEN J. Column tests of cold-formed steel non-symmetric lipped angle sections[J]. Journal of Constructional Steel Research, 2008, 64(7): 808-815.
|
| [11] |
SHIFFERAW Y, SCHAFER B W. Cold-formed steel lipped and plain angle columns with fixed ends[J]. Thin-Walled Structures, 2014, 80: 142-152. doi: 10.1016/j.tws.2014.03.001
|
| [12] |
ZHANG L L, WANG F Y, LIANG Y T, et al. Press-braked S690 high strength steel equal-leg angle and plain channel section stub columns: testing, numerical simulation and design[J]. Engineering Structures, 2019, 201: 109764.1-109764.12. doi: 10.1016/j.engstruct.2019.109764
|
| [13] |
姚行友,胡成立,聂泽谕,等. 冷弯不等肢复杂卷边角钢轴压试验及承载力设计方法[J]. 建筑钢结构进展,2024,26(2): 34-44.
YAO Xingyou1,HU Chengli,NIE Zeyu,et al. Experiment and design method of cold-formed thin-walled steel unequal-legged complex-lipped angles under axial Compressio[J]. Progress in Steel Building Structures, 2024, 26(9): 34-44.
|
| [14] |
周宜松. 复杂卷边不等边角形截面冷弯薄壁型钢柱轴压稳定承载力研究[D]. 郑州:郑州大学,2020.
|
| [15] |
徐步洲. 双卷边不等肢角钢冷弯薄壁型钢柱轴压稳定承载力研究[D]. 西安:西安建筑科技大学,2017.
|
| [16] |
中华人民共和国建设部,中华人民共和国国家质量监督检验检疫总局. 冷弯薄壁型钢结构技术规范:GB 50018—2002[S]. 北京:中国计划出版社,2002.
|
| [17] |
国家市场监督管理总局,国家标准化管理委员会. 金属材料拉伸试验第1部分:室温试验方法:GB/T 228.1—2021[S]. 北京:中国标准出版社,2021.
|
| [18] |
YOUNG B. Tests and design of fixed-ended cold-formed steel plain angle columns[J]. Journal of Structural Engineering, 2004, 130(12): 1931-1940. doi: 10.1061/(ASCE)0733-9445(2004)130:12(1931)
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