EXPERIMENTAL RESEARCH ON REINFORCEMENT METHOD AND BEARING CAPACITY OF STEEL PURLINS ON ROOFS OF LIGHT-GAUGE STEEL PLANTS

LIU Meijing; WU Qixun; ZHOU Hang; DING Runmin; FAN Shenggang

doi:10.13204/j.gyjzG21021802

Volume 51 Issue 11

Mar. 2022

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2021 > 51(11): 186-194

LIU Meijing, WU Qixun, ZHOU Hang, DING Runmin, FAN Shenggang. EXPERIMENTAL RESEARCH ON REINFORCEMENT METHOD AND BEARING CAPACITY OF STEEL PURLINS ON ROOFS OF LIGHT-GAUGE STEEL PLANTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 186-194. doi: 10.13204/j.gyjzG21021802

Citation:

LIU Meijing, WU Qixun, ZHOU Hang, DING Runmin, FAN Shenggang. EXPERIMENTAL RESEARCH ON REINFORCEMENT METHOD AND BEARING CAPACITY OF STEEL PURLINS ON ROOFS OF LIGHT-GAUGE STEEL PLANTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 186-194. doi: 10.13204/j.gyjzG21021802

Citation:

LIU Meijing, WU Qixun, ZHOU Hang, DING Runmin, FAN Shenggang. EXPERIMENTAL RESEARCH ON REINFORCEMENT METHOD AND BEARING CAPACITY OF STEEL PURLINS ON ROOFS OF LIGHT-GAUGE STEEL PLANTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 186-194. doi: 10.13204/j.gyjzG21021802

PDF( 14706 KB)

EXPERIMENTAL RESEARCH ON REINFORCEMENT METHOD AND BEARING CAPACITY OF STEEL PURLINS ON ROOFS OF LIGHT-GAUGE STEEL PLANTS

doi: 10.13204/j.gyjzG21021802

1. Department of Civil Engineering, Southeast University Chengxian College, Nanjing 210088, China;
2. School of Civil Engineering, Southeast University, Nanjing 210096, China

Received Date: 2021-02-18
Available Online: 2022-03-29

Abstract

Abstract

With the increase of photovoltaic power generation projects, more and more industrial plants have been equipped with photovoltaic panels on the roofs. With the increase of service loads on roof, purlins can not meet the requirements of bearing capacity, so it is often necessary to be reinforced. Combined with the background of a 5 MW self-consumption distributed photovoltaic power generation project, a new method for purlin reinforcement was proposed based on the reinforcement method of enlargement sections, that was, L-shaped angle steel was added at the lower flange of the original C-section purlins for reinforcement, and the two were connected by core-pulling rivets. On that basis, the bearing capacity tests of three reinforced steel purlin specimens were conducted to study the mechanical properties and failure modes of purlins, and the load-displacement curve, load-strain curve, bearing capacity, and stiffness of specimens were obtained. Through the finite element software ABAQUS, the accurate finite element models of specimens were constructed, and the numerical simulation analysis was conducted. The finite element results and test results were compared and analyzed to verify the accuracy of test results and the effectiveness of the new reinforcement method. The results showed that: the new reinforcement method of C-section steel purlins proposed in the paper was feasible. The bearing capacity and stiffness of the reinforced steel purlins could satisfy the requirements of relevant specifications, and the ultimate bearing capacity was about 1.49 times of the design value of bearing capacity of original purlins.
- steel purlin,
- reinforcement method,
- experimental study,
- C-section,
- core-pulling rivet

FullText(HTML)

References(21)

References

[1]	吴宗华.钢结构厂房屋顶安置光伏电站的加固设计研究[J].居舍,2020(9):31.
[2]	张魁,宗钟凌,朱立位.冷弯薄壁C型钢檩条增设缀板加固方法与力学性能分析[J].建筑技术,2017,48(8):844-846.
[3]	赵海斌,包文龙,张良利,等.分布式光伏电站中屋面檩条设计及加固方案探究[J].中国新技术新产品,2019(14):92-94.
[4]	佘远善,陈颢元,郭耀杰.冷弯型钢檩条屋面增设光伏板的下撑式檩条结构加固受力性能分析及改造方案[J].科学技术与工程,2020,20(35):14571-14578.
[5]	黄炳生,冯方涛,孙留洋,等.既有简支薄壁C型钢檩条连续化加固研究[J].建筑结构学报,2021,42(12):101-112.
[6]	郑云,叶列平,岳清瑞.FRP加固钢结构的研究进展[J].工业建筑,2015,45(8):20-25 ,34.
[7]	张正涛,任庆新,任德斌,等.外包钢加固火灾后钢管混凝土叠合短柱轴压性能研究[J].工业建筑,2020,50(10):187-193.
[8]	王元清,宗亮,施刚,等.钢结构加固新技术及其应用研究[J].工业建筑,2015,45(2):1-7 ,22.
[9]	中华人民共和国住房和城乡建设部.金属材料拉伸试验第1部分室温试验方法:GB/T 228.1-2010[S].北京:中国建筑工业出版社,2010.
[10]	TANG J,YOUNG B.Column Tests of Cold-Formed Steel Channels with Complex Stiffeners[J].Journal of Structural Engineering,2002,128(6):737-745.
[11]	YU C,SCHAFER B W.Local Buckling Tests on Cold-Formed Steel Beams[J].Journal of Structural Engineering,2003,129(12):1596-1606.
[12]	YU C,SCHAFER B W.Distortional Buckling Tests on Cold-Formed Steel Beams[J].Journal of Structural Engineering,2006,132(4):515-528.
[13]	王海明.冷弯薄壁型钢受弯构件稳定性能研究[D].哈尔滨:哈尔滨工业大学,2009.
[14]	章阳.冷弯薄壁C形钢受弯构件畸变屈曲和局部屈曲性能研究[D].重庆:重庆大学,2014.
[15]	NIU S,RASMUSSEN K J R,ASCE M,et al.Local-Global Interaction Buckling of Stainless Steel I-Beams.I:Experimental Investigation[J/OL].Journal of Structural Engineering,2015,141(8).https://doi.org/10.1061/(ASCE) ST.1943-541X.0001137.
[16]	NIU S,RASMUSSEN K J R,ASCE M,et al.Local-Global Interaction Buckling of Stainless Steel I-Beams.II:Numerical Study and Design[J/OL].Journal of Structural Engineering,2015,141(8).https://doi.org/10.1061/(ASCE) ST.1943-541X.0001131.
[17]	丁智霞.考虑局部屈曲卷边C形截面不锈钢构件承载力研究[D].南京:东南大学,2017.
[18]	杜利.卷边C形截面不锈钢受弯构件畸变屈曲承载力研究[D].南京:东南大学,2019.
[19]	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,2018.
[20]	中华人民共和国住房和城乡建设部.门式刚架轻型房屋钢结构技术规范:GB 51022-2015[S].北京:中国建筑工业出版社,2015.
[21]	European Committee for Standardisation (CEN).Eurocode 3:Design of Steel Structures-Part 1-5:Plated Structural Elements:EN 1993-1-5:2006[S].Burussels,Belgium:CEN,2006.