Volume 39 Issue 11
Nov.  2022
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QIANG Xuhong, CHEN Longlong, JIANG Xu. Flexure tests on steel-concrete composite beams strengthened with prestressed CFRP plates by string system[J]. Acta Materiae Compositae Sinica, 2022, 39(11): 5135-5147. doi: 10.13801/j.cnki.fhclxb.20220629.004
Citation: QIANG Xuhong, CHEN Longlong, JIANG Xu. Flexure tests on steel-concrete composite beams strengthened with prestressed CFRP plates by string system[J]. Acta Materiae Compositae Sinica, 2022, 39(11): 5135-5147. doi: 10.13801/j.cnki.fhclxb.20220629.004

Flexure tests on steel-concrete composite beams strengthened with prestressed CFRP plates by string system

doi: 10.13801/j.cnki.fhclxb.20220629.004
Funds:  National Key Research and Development Program (2020 YFD1100403); National Natural Science Foundation of China (52142804; 51408150); Research and Development Program for Key Areas in Guangdong Province (2019 B111106002); China Construction Corporation Science and Technology Research and Development Program Funding (CSCEC-2020-Z-1); Shanghai Science and Technology Plan Project (20 DZ2253000); Study on Structural Safety Monitoring and Condition Assessment of Shuohuang Heavy Haul Railway Bridge under Multi-factor Coupling(SHGF-18-50)
  • Received Date: 2022-04-21
  • Accepted Date: 2022-06-11
  • Rev Recd Date: 2022-05-29
  • Available Online: 2022-06-30
  • Publish Date: 2022-11-01
  • The four-point flexure experiments of four steel-concrete composite beams including three beams strengthened with prestressed carbon fiber-reinforced polymer (CFRP) plates and one non-strengthened as reference were investigated. The CFRP plate was transverse stretched by independently designed string system equipment and fixed on bottom of steel beam by rotatable end-anchorage. Experimental results show that the failure modes of beams present typical bending failure characteristics. The ultimate load-bearing capacities of three beams strengthened with prestressed CFRP plates are significantly improved by 31.5%, 28.8% and 47.9%, respectively. Unfortunately, the failure of CFRP plate of 150CFRP(10)-S-C beam due to improper anchorage is premature. The ultimate deflections of 100CFRP(10)-S-C and 150CFRP(15)-S-C are little affected by the reinforcement method, reduced by 0.4% and 1.6%, respectively. The stress distribution of CFRP plate is almost uniform during the whole process, and the material strength utilization ratios of CFRP plates are more than 80% at failure. The prestress losses of CFRP plates after 90 h are not more than 2.5%, and its compensation is convenient. However, it should be noted that this method is highly dependent on the reliability of end anchorage.

     

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  • [1]
    聂建国. 钢-混凝土组合结构桥梁[M]. 北京: 人民交通出版社, 2011.

    NIE Jianguo. Steel-concrete composite bridge[M]. Beijing: China Communications Press, 2011(in Chinese).
    [2]
    张鹏, 桂金洋, 邓宇, 等. 偏心受拉作用下预应力CFRP筋-型钢混凝土构件抗裂试验[J]. 复合材料学报, 2021, 38(3):920-931. doi: 10.13801/j.cnki.fhclxb.20200710.001

    ZHANG Peng, GUI Jinyang, DENG Yu, et al. Experiment on crack resistance of prestressed CFRP tendons-steel reinforced concrete members under eccentric tension[J]. Acta Materiae Compositae Sinica,2021,38(3):920-931(in Chinese). doi: 10.13801/j.cnki.fhclxb.20200710.001
    [3]
    GHEITASI A, HARRIS D K. Performance assessment of steel-concrete composite bridges with subsurface deck deterioration[J]. Structures,2015,2:8-20. doi: 10.1016/j.istruc.2014.12.001
    [4]
    CHEN J, ZHANG H, YU Q. Monotonic and fatigue behavior of steel-concrete composite beams subjected to corrosion[J]. Structures,2021,34:1973-1984. doi: 10.1016/j.istruc.2021.08.110
    [5]
    LEBET J P, DUCRET J M. Le comportement dans le temps des ponts mixtes continus[R]. Lausanne: Office Fédéral Des Routes, 1997.
    [6]
    黄侨. 既有钢-混组合梁桥常见病害分析及其加固策略[C]//王永珩. 2008年全国既有桥梁加固: 改造与评价学术会议论文集. 北京: 人民交通出版社, 2008: 159-164.
    HUANG Qiao. Common diseases analysis and reinforcement strategy of existing steel-concrete composite beam bridge[C]//WANG Yongheng. The 2008 National Acade-mic Conference on Bridge Strengthening: Papers of Reconstruction and Evaluation. Beijing: China Communications Press, 2008: 159-164(in Chinese).
    [7]
    于志平. 钢-混凝土组合梁桥加固方法及加固质量检验评定方法研究[D]. 西安: 长安大学, 2013.

    YU Zhiping. Inspection and assessment methods research on the reinforcement measures and quality of steel-concrete composite girder bridge[D]. Xi’an: Chang’an University, 2013(in Chinese).
    [8]
    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):80-87. doi: 10.11918/j.issn.0367-6234.201801164

    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):80-87(in Chinese). doi: 10.11918/j.issn.0367-6234.201801164
    [9]
    许清风, 朱雷, 陈建飞, 等. 内嵌CFRP筋/片加固木梁受弯性能试验研究[J]. 建筑结构学报, 2012, 33(8):149-156. doi: 10.14006/j.jzjgxb.2012.08.018

    XU Qingfeng, ZHU Lei, CHEN Jianfei, et al. Experimental study on flexural behavior of strengthening timber beams with near surface mounted CFRP bars and strips[J]. Jour-nal of Building Structures,2012,33(8):149-156(in Chinese). doi: 10.14006/j.jzjgxb.2012.08.018
    [10]
    程璐, 冯鹏, 徐善华, 等. CFRP加固钢结构抗疲劳技术研究综述[J]. 玻璃钢/复合材料, 2013(4):58-62. doi: 10.3969/j.issn.1003-0999.2013.04.013

    CHENG Lu, FENG Peng, XU Shanhua, et al. The technology and research of steel structure strengthened with CFRP[J]. Fiber Reinforced Plastics/Compossites,2013(4):58-62(in Chinese). doi: 10.3969/j.issn.1003-0999.2013.04.013
    [11]
    陈卓异, 彭岚, 李传习, 等. CFRP全覆盖胶粘加固含中心裂纹钢板的静力性能[J]. 复合材料学报, 2022, 39(5):1810-1820.

    CHEN Zhuoyi, PENG Lan, LI Chuanxi, et al. Static behavior of CFRP full cover adjusted steel plate with center crack[J]. Acta Materiae Compositae Sinica,2022,39(5):1810-1820(in Chinese).
    [12]
    中华人民共和国住房和城乡建设部. 结构加固修复用碳纤维片材: JG/T 167—2016[S]. 北京: 中国标准出版社, 2016.

    Ministry of Housing and Urban-Rural Development of the People's Republic of China. Carbon fiber laminate for strengthening and restoring structures: JG/T 167—2016[S]. Beijing: Standards Press of China, 2016(in Chinese).
    [13]
    NABIL F G. Response of continuous CFRP prestressed concrete bridges under static and repeated loadings[J]. PCI Journal,2000,45(6):84-102. doi: 10.15554/pcij.11012000.84.102
    [14]
    黄滔. CFRP板预应力锚具试验研究[D]. 重庆: 重庆大学, 2009.

    HUANG Tao. Experimental study on CFRP plate prestressed anchor[D]. Chongqing: Chongqing University, 2009(in Chinese).
    [15]
    钟建. 预应力CFRP板加固混凝土梁的强度利用效率分析[C]//同济大学/《建筑结构》杂志社. 建筑科学与工程: 第二届大型建筑钢与组合结构国际会议论文集. 北京: 《建筑结构》编辑部, 2014: 578-581.

    ZHONG Jian. Analysis of the utilization efficiency of the strength of concrete beams strengthened with prestressed CFRP plates[C]//Tongji University/Building Structure. Building Science and Engineering: Papers of the Second International Conference on Steel and Composite Structures for Large Buildings. Beijing: Building Structure’s Editorial Department, 2014: 578-581(in Chinese).
    [16]
    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. doi: 10.3969/j.issn.0258-2724.20180297

    YE Huawen, LI Xinshun, SHUAI Chun, et al. Fatigue experimental analysis of damaged steel beams strengthened with prestressed unbonded CFRP plates[J]. Journal of Southwest Jiaotong University,2019,54(1):129-136(in Chinese). doi: 10.3969/j.issn.0258-2724.20180297
    [17]
    NORDIN H, TALJSTEN B. Concrete beams strengthened with prestressed near surface mounted CFRP[J]. Journal of Composites for Construction,2006,10(1):60-68. doi: 10.1061/(ASCE)1090-0268(2006)10:1(60
    [18]
    薛伟辰, 曾磊, 谭园. 预应力CFRP板加固混凝土梁设计理论研究[J]. 建筑结构学报, 2008, 29(4):127-133. doi: 10.3321/j.issn:1000-6869.2008.04.017

    XUE Weichen, ZENG Lie, TAN Yuan. Studies on design theories of concrete beams strengthened with prestressed CFRP plates[J]. Journal of Building Structures,2008,29(4):127-133(in Chinese). doi: 10.3321/j.issn:1000-6869.2008.04.017
    [19]
    陈思贵. 预应力CFRP板加固RC梁抗弯性能及尺寸效应试验研究[D]. 广州: 广东工业大学, 2017.

    CHEN Sigui. Experimental study on flexural performance and size effect of RC beam strengthened with prestressed CFRP plate[D]. Guangzhou: Guangdong University of Technology, 2017(in Chinese).
    [20]
    韩志强. 预应力碳纤维板加固受损混凝土梁的试验研究[D]. 重庆: 重庆交通大学, 2015.

    HAN Zhiqiang, The prestressed carbon fiber board experimental study of damaged reinforced concrete beam[D]. Chongqing: Chongqing Jiaotong University, 2015(in Chinese).
    [21]
    周知献. 预应力碳纤维板加固损伤混凝土梁的抗弯承载能力研究[D]. 重庆: 重庆交通大学, 2018.

    ZHOU Zhixian. Study on the bending capacity of damaged concrete beam reinforced by prestressed carbon fiber plate[D]. Chongqing: Chongqing Jiaotong University, 2018(in Chinese).
    [22]
    DENG J, RASHID K, LI X, et al. Comparative study on prestress loss and flexural performance of rectangular and T beam strengthened by prestressing CFRP plate[J]. Composite Structures,2021, 262:113340. doi: 10.1016/j.compstruct.2020.113340
    [23]
    DENG J, LI X, WANG Y, et al. RC beams strengthened by prestressed CFRP plate subjected to sustained loading and continuous wetting condition: Flexural behavior[J]. Construction and Building Materials,2021,311:125290.
    [24]
    LI X, DENG J, WANG Y, et al. RC beams strengthened by prestressed CFRP plate subjected to sustained loading and continuous wetting condition: Time-dependent prestress loss[J]. Construction and Building Materials,2021,275:122187. doi: 10.1016/j.conbuildmat.2020.122187
    [25]
    陶利. 预应力CFRP板加固钢梁抗弯性能的试验研究[D]. 柳州: 广西工学院, 2010.

    TAO Li. Research on flexural performance of steel beams reinforced by prestressed carbon fabric reinforced plate[D]. Liuzhou: Guangxi University of Science and Technology, 2010(in Chinese).
    [26]
    邓朗妮, 张鹏, 燕柳斌, 等. 预应力碳纤维板加固钢梁抗弯性能试验研究[J]. 工程力学, 2011, 28(10): 78-85.

    DENG Langni, ZHANG Peng, YAN Liubin, et al. Flexural performance experimental study on steel beam strengtheened with prestressed CFRP plate[J]. Engineering Mechanics, 2011, 28(10): 78-85(in Chinese).
    [27]
    朱捷. 预应力CFRP板加固钢梁抗弯受力性能研究[D]. 绵阳: 西南科技大学, 2019.

    ZHU Jie. Research on the flexural behavior of steel beams strengthened with prestressed CFRP plate[D]. Mianyang: Southwest University of Science and Technology, 2019(in Chinese).
    [28]
    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(9):29-39. doi: 10.1016/j.engstruct.2018.05.042
    [29]
    LI J, ZHU M, DENG J, et al. Flexural behaviour of notched steel beams strengthened with a prestressed CFRP plate subjected to fatigue damage and wetting/drying cycles[J]. Engineering Structures, 2022, 250: 113430
    [30]
    万世成, 黄侨, 关健, 等. 预应力碳纤维板加固钢-混凝土组合连续梁负弯矩区试验[J]. 吉林大学学报: 工学版, 2019(4):1114-1123. doi: 10.13229/j.cnki.jdxbgxb20180432

    WAN Shicheng, HUANG Qiao, GUAN Jian, et al. Strengthening of continuous steel-concrete composite beams in negative moment region using prestressed carbon fiber-reinforced polymer plates[J]. Journal of Jilin University (Engineering and Technology Edition),2019(4):1114-1123(in Chinese). doi: 10.13229/j.cnki.jdxbgxb20180432
    [31]
    GHAFOORI E, MOTAVALLI M. Innovative CFRP-prestressing system for strengthening metallic structures[J]. Jour-nal of Composites for Construction,2015,19(6):04015006. doi: 10.1016/j.engstruct.2019.109416
    [32]
    KIANMOFRAD F, GHAFOORI E, ELYASI M, et al. Strengthening of metallic beams with different types of prestressed unbonded retrofit systems[J]. Composite Structures,2017,159:81-95. doi: 10.1016/j.compstruct.2016.09.020
    [33]
    GHAFOORI E, MOTAVALLI M, NUSSBAUMER A, et al. Design criterion for fatigue strengthening of riveted beams in a 120-year-old railway metallic bridge using pre-stressed CFRP plates[J]. Composites Part B: Engineering,2015,68:1-13. doi: 10.1016/j.compositesb.2014.08.026
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