2025年6月18日 周三
期刊社主页编辑部首页编委会期刊简介过刊浏览
首页 > 优先出版
PDF HTML阅读 XML下载 导出引用 引用提醒
TRC复合嵌入式预应力CFRP筋加固RC梁抗弯性能研究
CSTR:
[cstr]
作者:
作者单位:

1.广西北投交通养护科技集团有限公司;2.中国矿业大学

基金项目:

广西重点研发计划项目(AB17292062)


Research on flexural performance of RC beams reinforced by TRC composite embedded prestressed CFRP bars
Author:
Affiliation:

1.Guangxi Beitou Transportation Maintenance Technology Group Co. LTD.;2.School of mechanics and civil engineering,China University of Mining and Technology

  • 摘要
    • | |
  • 访问统计
    • |
  • 参考文献 [28]
    • |
  • 相似文献
    • |
  • 引证文献
    • | |
  • 文章评论
    摘要:

    为研究TRC复合嵌入式预应力CFRP筋加固钢筋混凝土梁的受弯性能，对1根普通钢筋混凝土梁和5根TRC复合嵌入式预应力CFRP筋加固梁进行了四点弯曲加载，分析了开槽尺寸和CFRP筋直径对复合加固梁承载力、破坏形态和裂缝分布等受弯性能的影响。试验结果表明：复合加固梁各阶段荷载均较未加固梁提升明显。加固梁极限荷载随开槽尺寸增加提升较小，随CFRP筋直径增加提升较大；复合加固梁抗弯刚度明显高于未加固梁；开槽尺寸和CFRP筋直径的增加与梁刚度的增加不成正比；复合加固梁裂缝呈现细而密的分布特点，裂缝数量明显多于普通钢筋混凝土梁并随开槽尺寸增加有所增多，但受CFRP筋直径影响较小；未加固梁的延性明显高于加固梁，随着CFRP筋直径的增大，复合加固梁延性下降，开槽尺寸的增大对梁延性的提升效果不明显；基于文献中提出的单一加固钢筋混凝土梁的开裂荷载计算模型，提出了复合加固梁的开裂荷载计算公式，计算值与试验值误差在6.5%以内，该开裂荷载计算公式的适用性较好。

    Abstract:

    In order to study the flexural performance of reinforced concrete beams reinforced by TRC composite embedded prestressed CFRP bars, a four-point flexural load was carried out on 1 ordinary reinforced concrete beam and 5 TRC composite embedded prestressed CFRP bars, and the effects of slot size and diameter of CFRP bars on the flexural performance of the composite reinforced beams were analyzed. The test results show that the load increase of the composite reinforced beam is more obvious in each stage than that of the unreinforced beam. The ultimate load of the reinforced beam increases slightly with the increase of slot size and greatly with the increase of CFRP bar diameter. The flexural stiffness of the composite reinforced beam is obviously higher than that of the unreinforced beam. The increase of slot size and diameter of CFRP bars is not proportional to the increase of beam stiffness. The number of cracks in composite reinforced beams is obviously more than that of ordinary reinforced concrete beams and increases with the increase of slot size, but the diameter of CFRP bars has little effect. The ductility of the unreinforced beam is obviously higher than that of the reinforced beam. The ductility of the composite reinforced beam decreases with the increase of the diameter of the CFRP bar, and the increase of the slot size has no obvious effect on the ductility of the beam. Based on the calculation model of the cracking load of a single reinforced concrete beam proposed in the literature, a formula for calculating the cracking load of a composite reinforced concrete beam is proposed. The error between the calculated value and the test value is less than 6.5%, which indicates that the formula has good applicability.

    参考文献
    [1] 尹世平,王璐晨,王聪聪,等.不同尺寸对TRC永久性模板叠合钢筋混凝土梁弯曲性能影响研究[J].建筑结构学报,2021,42(S1):291-301.YIN S P, WANG L C, WANG C C, et al. Influence of Different Sizes on bending performance of TRC Permanent formwork Composite reinforced concrete beams [J]. Journal of Building Structures, 21,42(S1):291-301.(in Chinese)
    [2] MOTT R, BRAMESHUBER W. Subequently applied waterproof basements made of textile reinforced concrete using the method[R]. Farmington Hills: American Spraying Concrete Institute, SP-251, 2008: 59-72.
    [3] 郭嘉欢,王伯昕,张添奇,等.纤维编织网增强混凝土抗渗性能研究[J].东北大学学报(自然科学版),2022,43(09):1354-1360.GUO J H, WANG B X, ZHANG T Q, et al. Study on impermeability of concrete reinforced with fiber braided mesh [J]. Journal of Northeastern University (Natural Science),2022,43(09):1354-1360. (in Chinese)
    [4] CALABRESE A S, D’ANTINO T, COLOMBI P, et al. Low- and High-Cycle Fatigue Behavior of FRCM Composites[J]. Materials, 2021,14(18).
    [5] 李赫, 徐世烺. 纤维编织网增强混凝土薄板力学性能的研究[J]. 建筑结构学报, 2007, 28(4): 117-22.LI H, XU S L. Study on mechanical properties of fiber woven Net reinforced Concrete sheet [J]. Journal of Building Structures, 2007, 28(4): 117-22. (in Chinese)
    [6] 陈辉, 杨彦克, 王传波. 纤维增强聚合物筋混凝土的研究与应用[J]. 混凝土, 2007(01): 42-45.CHEN H, YANG Y K, WANG C B. Research and application of fiber reinforced polymer reinforced concrete [J]. Concrete, 2007(01): 42-45. (in Chinese)
    [7] 荀勇, 支正东, 张勤. 织物增强混凝土薄板加固钢筋混凝土梁受弯性能试验研究[J]. 建筑结构学报, 2010, 31(03): 70-76.XUN Y, ZHI Z D, ZHANG Q. Experimental study on flexural performance of reinforced concrete beams reinforced by fabric reinforced concrete sheets [J]. Journal of Building Structures, 2010, 31(03): 70-76. (in Chinese)
    [8] 任伟, 刘贺, 李平, 等. 预应力TRM加固RC梁正截面承载能力试验[J]. 广西大学学报(自然科学版), 2020, 45(01): 113-120.REN W, LIU H, LI P, et al. Test of normal section bearing capacity of RC beams reinforced by Prestressed TRM [J]. Journal of Guangxi University (Natural Science Edition), 2020, 45(01): 113-120. (in Chinese)
    [9] 杜运兴, 邵喜诚, 周芬. 预应力CTRC板加固持载混凝土梁的抗弯性能研究[J]. 铁道科学与工程学报, 2020, 17(1): 189-197.DU Y X, SHAO X C, ZHOU F. Research on flexure performance of loaded concrete beams reinforced by Prestressed CTRC plates [J]. Journal of Railway Science and Engineering, 2020, 17(1): 189-197. (in Chinese)
    [10] YIN S P, HUA Y T, YU Y L. Flexural durability and chloride diffusion equation of TRC-strengthened beams under a chloride environment[J]. KSCE Journal of Civil Engineering, 2020, 24: 1-13.
    [11] 徐世烺, 尹世平, 蔡新华. 纤维编织网增强混凝土加固钢筋混凝土受弯梁的抗裂性能研究[J]. 水利学报, 2010, 41(07):833-840.XU S L, YIN S P, CAI X H. Study on Crack resistance of Reinforced concrete beams reinforced by fiber braided mesh [J]. Journal of Hydraulic Engineering, 2010, 41(07):833-840. (in Chinese)
    [12] 徐世烺, 尹世平, 蔡新华. 纤维编织网增强混凝土加固钢筋混凝土梁受弯性能研究[J]. 土木工程学报, 2011, 44(04): 23-34.XU S L, Yin S P, CAI X H. Study on flexural performance of reinforced concrete beams reinforced by fiber braided mesh [J]. Journal of Civil Engineering, 2011, 44(04): 23-34. (in Chinese)
    [13] 徐世烺, 沈玲华, 王激扬, 等. 纤维编织网增强混凝土薄板的高温力学性能与微观界面粘结破坏分析[C]//. 第22届全国结构工程学术会议论文集第Ⅱ册. [出版者不详], 2013: 165-172.XU S L, SHEN L H, WANG X Y, et al. Analysis of high temperature mechanical Properties and micro-interface bond failure of concrete sheet reinforced with fiber braided mesh [C]. Proceedings of the 22nd National Structural Engineering Conference Vol. Ii. [Publisher unknown], 2013:165-172. (in Chinese)
    [14] 尹世平, 盛杰, 徐世烺. 疲劳荷载下纤维编织网增强混凝土加固RC梁的弯曲性能[J]. 水利学报, 2014, 45(12): 1481-1486.Yin S P, SHENG J, XU S L. Bending behavior of RC beams reinforced by fiber braided mesh reinforced by concrete under fatigue load [J]. Journal of Hydraulic Engineering, 2014, 45(12): 1481-1486. (in Chinese)
    [15] 郝永超. 内嵌FRP筋材加固混凝土连续梁抗弯性能研究[D]. 焦作: 河南理工大学,2010.HAO Y C. Research on flexural performance of Concrete continuous beams reinforced with embedded FRP bars [D]. Jiaozuo: Henan Polytechnic University,2010. (in Chinese)
    [16] MOATAZ B, KHALED S. Flexural strengthening of RC beams with prestressed NSM CFRP rods experimental and analytical investigation[J]. Construction and Building Materials, 2009, 23(10).
    [17] 余舒宇. 表层嵌贴预应力CFRP板条加固RC梁抗弯性能影响因素研究[D]. 长沙: 长沙理工大学, 2012.Yu S Y. Study on the Influence Factors of flexural performance of RC Beams Reinforced with prestressed CFRP Slabs [D]. Changsha: Changsha University of Science and Technology, 2012. (in Chinese)
    [18] WU G, DONG Z Q, WU Z S, et al. Performance and parametric analysis of flexural strengthening for RC beams with NSM-CFRP bars[J]. Journal of Composites for Construction,2014,18(4).
    [19] JAHANI Y., BAENA M., GÓMEZ J., et al. (2022). Flexural performance of NSM CFRP strengthened concrete beams under temperature. In: Ilki, A., Ispir, M., Inci, P. (eds) 10th International Conference on FRP Composites in Civil Engineering. CICE 2021. Lecture Notes in Civil Engineering, vol 198. Springer, Cham.
    [20] TOUTANJI H., ELJUFOUT T. (2022). Effect of under-stressing on the fatigue strength of RC beams rehabilitated with NSM CFRP reinforcement. In: Ilki, A., Ispir, M., Inci, P. (eds) 10th International Conference on FRP Composites in Civil Engineering. CICE 2021. Lecture Notes in Civil Engineering, vol 198. Springer, Cham.
    [21] 卞任远. 多种方法组合加固钢筋混凝土梁抗弯性能研究[D]. 南京: 东南大学,2016.BIAN R Y. Research on flexural performance of Reinforced concrete beams strengthened by Combination of various methods [D]. Nanjing: Southeast University,2016. (in Chinese)
    [22] 于雯,黄悦,黄谦等.FRP筋预应力混凝土梁长期性能研究进展[J].复合材料科学与工程,2022(04):111-119.Yu W, HUANG Y, HUANG Q, et al. Research progress on long-term Performance of prestressed concrete beams with FRP bars [J]. Composite Materials Science and Engineering,2022(04):111-119. (in Chinese)
    [23] 尹世平,余玉琳,那明望.氯盐侵蚀下TRC加固承载RC受弯梁抗裂性能[J].水利学报,2018,49(07):886-891.YIN S P, YU Y L, NA M W. Crack resistance of RC flexural beams reinforced by TRC under chloride erosion [J]. Journal of Hydraulic Engineering,2018,49(07):886-891. (in Chinese)
    [24] 盛杰.海洋大气环境下TRC加固RC梁受弯时变性能[J].建筑结构学报,2021,42(S1):284-290.SHENG J. Time-varying behavior of RC beams reinforced by TRC under Marine atmosphere [J]. Journal of Building Structures,2021,42(S1):284-290. (in Chinese)
    [25] 许成祥, 吴永昂, 罗恒等. CFRP及外包钢复合加固震损双层高架桥框架墩地震易损性分析[J]. 铁道科学与工程学报, 2022, 19(03): 733-742.XU C X, WU Y A, LUO H, et al. Seismic Vulnerability Analysis of Double-layer Viaduct frame pier reinforced by CFRP and Clad Steel [J]. Journal of Railway Science and Engineering, 2022, 19(03): 733-742. (in Chinese)
    [26] 尹世平. TRC基本力学性能及其增强钢筋混凝土梁受弯性能研究[D]. 大连: 大连理工大学, 2010.YIN S P. Research on Basic Mechanical Properties of TRC and Flexural properties of Reinforced Concrete Beams [D]. Dalian: Dalian University of Technology, 2010. (in Chinese)
    [27] 蒋鑫. 表层嵌入式预应力CFRP板条加固RC梁抗弯能力试验研究[D]. 长沙: 长沙理工大学, 2011.JIANG X. Experimental Study on flexural strength of RC beams Reinforced by Surface embedded prestressed CFRP slats [D]. Changsha: Changsha University of Science and Technology, 2011. (in Chinese)
    [28] 张勤. 织物增强混凝土（TRC）加固RC梁正截面抗弯性能试验研究[D]. 镇江: 江苏大学,2009.ZHANG Q. Experimental Study on flexural Performance of RC beam reinforced by Fabric Reinforced Concrete (TRC) [D]. Zhenjiang: Jiangsu University,2009. (in Chinese)
    相似文献
    引证文献
引用本文

复制
相关视频

分享
文章指标
  • 点击次数:72
  • 下载次数: 0
  • HTML阅读次数: 0
  • 引用次数: 0
历史
  • 收稿日期:2023-09-03
  • 最后修改日期:2023-11-02
  • 录用日期:2023-11-20
文章二维码

您是本站第 4754718 访问者

通信地址：重庆市沙坪坝区沙正街174号，重庆大学A区     邮编：400044

电话：023-65111322；023-65111863     E-mail：xuebao@cqu.edu.cn

版权所有：土木与环境工程学报（中英文） ® 2025 版权所有