Effects of the adhesive layer and prestress on the flexural behavior of damaged steel beams strengthened with CFRP plates

WANG Haitao; BIAN Zhining; XIONG Hao; CHEN Minsheng; WU Qiong

doi:10.13801/j.cnki.fhclxb.20220409.001

Volume 40 Issue 3

Mar. 2023

Turn off MathJax

Article Contents

Article Navigation > Acta Materiae Compositae Sinica > 2023 > 40(3): 1718-1728

WANG Haitao, BIAN Zhining, XIONG Hao, et al. Effects of the adhesive layer and prestress on the flexural behavior of damaged steel beams strengthened with CFRP plates[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1718-1728. doi: 10.13801/j.cnki.fhclxb.20220409.001

Citation:

WANG Haitao, BIAN Zhining, XIONG Hao, et al. Effects of the adhesive layer and prestress on the flexural behavior of damaged steel beams strengthened with CFRP plates[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1718-1728. doi: 10.13801/j.cnki.fhclxb.20220409.001

Citation:

PDF( 5034 KB)

Effects of the adhesive layer and prestress on the flexural behavior of damaged steel beams strengthened with CFRP plates

doi: 10.13801/j.cnki.fhclxb.20220409.001

1.
College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
2.
China Construction Eighth Engineering Division CO., LTD., Shanghai 200122, China
3.
Research Center of Shanghai Carbon Fiber Composite Application Technology in Civil Engineering, Shanghai 200122, China

Funds: National Natural Science Foundation of China (51708174); CSCEC Technology R&D Program (CSCEC-2020-Z-1); Shanghai Science and Technology Program (20DZ2253000)

Received Date: 2022-02-21
Accepted Date: 2022-04-01
Rev Recd Date: 2022-03-31

Available Online: 2022-04-12

Publish Date: 2023-03-15

Abstract

Abstract

In order to investigate the effects of the adhesive layer and prestress on the flexural behavior of damaged steel beams strengthened with carbon fiber reinforced polymer (CFRP) plates, five damaged H-steel beams were tested under flexure. The characteristic load, load-deflection curve, CFRP plate strain and its strength utilization were analyzed. Test results show that the unbonded CFRP plate has a similar strengthening efficiency to the bonded CFRP plate, with a difference of less than 2% in the characteristic loads. The non-prestressed CFRP plate provides only a very small strengthening efficiency under the normal service state. However, the characteristic loads of steel beams strengthened with the prestressed CFRP plate can be significantly increased by about 30% compared with the non-prestressed CFRP plate. The plane section assumption is satisfied in the bonded CFRP plate-steel beam composite section while it is not satisfied in the unbonded CFRP plate-steel beam composite section. Compared with the non-prestressed CFRP plate, the strength utilization of the CFRP plate can be obviously increased when a prestress is applied in the CFRP plate. The developed finite element model can predict the flexural behavior of the specimens with good accuracy. The increase in the prestress, thickness and elastic modulus of the CFRP plate can increase the flexural strengthening efficiency of damaged steel beams.
- CFRP plate,
- bonded strengthening,
- unbonded strengthening,
- prestressing,
- steel beam,
- flexural behavior
Long Abstrsct
Innovation Points

FullText(HTML)

References(23)

References

[1]	王海涛, 吴刚, 张磊. FRP修复开裂钢板的应力强度因子影响因素分析[J]. 河海大学学报(自然科学版), 2020, 48(5):440-445. WANG Haitao, WU Gang, ZHANG Lei. Influencing factor analysis of stress intensity factor for FRP-strengthened cracked steel plates[J]. Journal of Hohai University (Natural Sciences),2020,48(5):440-445(in Chinese).
[2]	柏佳文, 魏洋, 张依睿, 等. 新型碳纤维增强复合材料-钢复合管海水海砂混凝土圆柱轴压试验[J]. 复合材料学报, 2021, 38(9):3076-3085. BAI Jiawen, WEI Yang, ZHANG Yirui, et al. Axial compression behavior of new seawater and sea sand concrete filled circular carbon fiber reinforced polymer-steel composite tube columns[J]. Acta Materiae Compositae Sinica,2021,38(9):3076-3085(in Chinese).
[3]	陈卓异, 彭彦泽, 李传习, 等. 高温下双搭接钢-CFRP板胶粘界面力学性能试验[J]. 复合材料学报, 2021, 38(2):449-460. CHEN Zhuoyi, PENG Yanze, LI Chuanxi, et al. Experimental study for the adhesive interface mechanical properties of double lapped steel-CFRP plate at high temperature[J]. Acta Materiae Compositae Sinica,2021,38(2):449-460(in Chinese).
[4]	WANG H T, LIU S S, LIU Q L, et al. Influences of the joint and epoxy adhesive type on the CFRP-steel interfacial behavior[J]. Journal of Building Engineering,2021,43:103167. doi: 10.1016/j.jobe.2021.103167
[5]	王海涛, 吴刚, 吴智深. FRP布置方式对含裂纹钢板加固后的疲劳性能影响分析[J]. 土木工程学报, 2015, 48(1):56-63. WANG Haitao, WU Gang, WU Zhishen. Study on the effect of FRP configurations on the fatigue behavior of strengthened steel plate with an initial crack[J]. China Civil Engineering Journal,2015,48(1):56-63(in Chinese).
[6]	YOUSEFI O, NARMASHIRI K, GHAEMDOUST M R. Structural behaviors of notched steel beams strengthened using CFRP strips[J]. Steel and Composite Structures,2017,2(1):35-43.
[7]	SWEEDAN A M I, ALHADID M M A, EL-SAWY K M. Experimental study of the flexural response of steel beams strengthened with anchored hybrid composites[J]. Thin-Walled Structures,2016,99:1-11. doi: 10.1016/j.tws.2015.10.026
[8]	TENG J G, YU T, FERNANDO D. Strengthening of steel structures with fiber-reinforced polymer composites[J]. Journal of Constructional Steel Research,2012,78:131-143. doi: 10.1016/j.jcsr.2012.06.011
[9]	GALAL K, SEIF ELDIN H M, TIRCA L. Flexural perfor-mance of steel girders retrofitted using CFRP materials[J]. Journal of Composites for Construction,2011,16(3):265-276.
[10]	LI J, WANG Y, DENG J, et al. Experimental study on the flexural behaviour of notched steel beams strengthened by prestressed CFRP plate with an end plate anchorage system[J]. Engineering Structures,2018,171:29-39. doi: 10.1016/j.engstruct.2018.05.042
[11]	SIWOWSKI T W, SIWOWSKA P. Experimental study on CFRP-strengthened steel beams[J]. Composites Part B: Engineering,2018,149:12-21. doi: 10.1016/j.compositesb.2018.04.060
[12]	卢亦焱, 张学朋, 吴涛, 等. 预应力碳纤维布加固钢梁的试验研究[J]. 应用基础与工程科学学报, 2009, 17(5):707-715. LU Yiyan, ZHANG Xuepeng, WU Tao, et al. Experimental research on steel beams strengthened by prestressed CFRP[J]. Journal of Basic Science and Engineering,2009,17(5):707-715(in Chinese).
[13]	GHAFOORI E, MOTAVALLI M. Flexural and interfacial behavior of metallic beams strengthened by prestressed bonded plates[J]. Composite Structures,2013,101:22-34. doi: 10.1016/j.compstruct.2013.01.021
[14]	万世成, 黄侨, 关健. 预应力CFRP板加固钢-混凝土组合梁受弯性能试验[J]. 哈尔滨工业大学学报, 2019, 51(3):86-93. WAN Shicheng, HUANG Qiao, GUAN Jian. Test on flexural behavior of steel-concrete composite beams strengthened with prestressed carbon fiber reinforced polymer plates[J]. Journal of Harbin Institute of Technology,2019,51(3):86-93(in Chinese).
[15]	GHAFOORI E, MOTAVALLI M. Innovative CFRP-prestressing system for strengthening metallic structures[J]. Jour-nal of Composites for Construction,2015,19(6):1-14.
[16]	HOSSEINI A, GHAFOORI E, MOTAVALLI M, et al. Flat prestressed unbonded retrofit system for strengthening of existing metallic I—Girders[J]. Composites Part B: Engi-neering,2018,155:156-172. doi: 10.1016/j.compositesb.2018.08.026
[17]	叶华文, 李新舜, 帅淳, 等. 无粘结预应力CFRP板加固受损钢梁疲劳试验研究[J]. 西南交通大学学报, 2019, 54(1):129-136. YE Huawen, LI Xinshun, SHUAI Chun, et al. Fatigue experimental analysis of damaged steel beams strengthened with prestressed unbonded CFRP plates[J]. Journal of South-west Jiaotong University,2019,54(1):129-136(in Chinese).
[18]	中国国家标准化管理委员会. 金属材料拉伸试验: 第一部分: 室温试验方法: GB/T 228.1—2010[S]. 北京: 中国标准出版社, 2010. Standardization Administration of China. Tensile test of metallic materials: Part 1: Test method at room tempera-ture: GB/T 228.1—2010[S]. Beijing: Standards Press of China, 2010(in Chinese).
[19]	中国国家标准化管理委员会. 定向纤维增强聚合物基复合材料拉伸性能试验方法: GB/T 3354—2014[S]. 北京: 中国标准出版社, 2014. Standardization Administration of China. Test method for tensile properties of directional fiber reinforced polymer matrix composites: GB/T 3354—2014[S]. Beijing: Standards Press of China, 2014(in Chinese).
[20]	中华人民共和国工业和信息化部. 纤维增强复合材料加固修复钢结构技术规程: YB/T 4558—2016[S]. 北京: 冶金工业出版社, 2017. Ministry of Industry and Information Technology of the People’s Republic of China. Technical specificaition for strengthening steel structures with fiber reinforced polymer: YB/T 4558—2016[S]. Beijing: Metallurgical Industry Press, 2017(in Chinese).
[21]	WANG H T, WU G. Bond-slip models for CFRP plates externally bonded to steel substrates[J]. Composite Structures,2018,184:1204-1214. doi: 10.1016/j.compstruct.2017.10.033
[22]	中华人民共和国住房和城乡建设部. 钢结构设计标准: GB/T 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(in Chinese).
[23]	庞育阳. 极端服役环境下CFRP-钢界面粘结性能研究[D]. 南京: 东南大学, 2019. PANG Yuyang. Study on the bond behavior of CFRP-steel interfaces under extreme service environment[D]. Nanjing: Southeast University, 2019(in Chinese).