考虑灌浆料龄期的钢筋-金属波纹管浆锚连接锚固性能试验研究
CSTR:
作者:
作者单位:

1.重庆大学 土木工程学院,重庆 400045;2.中冶赛迪工程技术股份有限公司,重庆 402460;3.重庆巨龙管业有限公司,重庆 401122

作者简介:

郭家旭(1995- ),男,主要从事钢-混组合结构研究,E-mail:guojiaxu@cqu.edu.cn。
GUO Jiaxu (1995- ), main research interest: composite construction, E-mail: guojiaxu@cqu.edu.cn.

通讯作者:

胡少伟(通信作者),男,教授,博士生导师,E-mail:hushaowei@cqu.edu.cn。

中图分类号:

TU398

基金项目:

重庆市技术创新与应用发展专项(cstc2019jscx-gksbX0013);国家自然科学基金(52130901);重庆市自然科学基金创新群体科学基金(cstc2020jcyj-cxttX0003)


Experimental study on anchorage property of rebar-metallic bellows slurry anchor connection considering grout age
Author:
Affiliation:

1.School of Civil Engineering, Chongqing University, Chongqing 400045, P. R. China;2.CISDI Engineering Co., Ltd., Chongqing 402460, P. R. China;3.Chongqing Julong Pipe Industry Co., Ltd., Chongqing 401122, P. R. China

Fund Project:

Technology Innovation and Application Development Project of Chongqing (No. cstc2019jscx-gksbX0013); National Natural Science Foundation of China (No. 52130901); Innovation Group Science Fundation of the Natural Science Fundation of Chongqing (No. cstc2020jcyj-cxttX0003)

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    摘要:

    为研究钢筋-金属波纹管浆锚连接的锚固性能,设计制作18组连接件,并完成拉拔试验。基于试验结果研究钢筋锚固长度la、灌浆料龄期T与螺旋箍筋约束对浆锚连接锚固性能的影响。试验结果表明,所有锚固钢筋均经历完整的弹性阶段与屈服阶段,最终试件表现为钢筋粘结-滑移破坏、钢筋拉断两种破坏形式。当灌浆料龄期T=3 d时,试件均发生粘结-滑移破坏;当灌浆料龄期T=7 d且锚固长度la13d时,试件均出现钢筋断裂破坏;当灌浆料龄期T=28 d时,无配箍试件锚固长度la=7d时、配箍试件la=5d时出现钢筋断裂破坏。提高钢筋锚固长度、灌浆料龄期与配置螺旋箍筋约束有利于试件的极限强度提高,并趋近钢筋实验抗拉强度,显著降低钢筋的弹性阶段滑移量,提高初始刚度,提升试件的锚固性能。实际工程中,当孔径比不小于2.6时,为确保3 d与7 d锚固性能,锚固长度应大于13d;为确保正常工作中钢筋充分发挥其力学性能,锚固长度应不小于10d

    Abstract:

    In order to study the anchorage property of rebar-metallic bellows slurry anchor connection, 18 groups of connection specimens were designed and fabricated in this study, and the pull-out tests were completed. The influences of anchorage length la, grouting material curing age T and spiral confinement on the anchorage property of the connection were analyzed based on the test results. The experimental results show that all the anchored rebars had undergone integral elastic stage and yielding stage, and the ultimate performance of specimens were bond slip failure and rebar fracture. When T=3 d, bond-slip failure occurred in all specimens. When T=7 d and la≥13d, rebars fractured. When T=28 d, specimens whose la=7d without stirrup and la=5d with stirrup began to failure of rebar fracture. With application of spiral confinement and the increase of anchorage length and grout age, the ultimate strength of specimens increased first and then approached to the tensile strength of rebar, the maximum sliding displacement of rebars in the elastic stage decreased significantly, the initial stiffness of specimens increased, and anchorage property improved significantly. In engineering practice, when D/d≥2.6, the anchorage length should be greater than 13d to ensure the anchorage performance of 3 d and 7 d. In order to fully exert its mechanical properties in normal work stage, anchorage length is prohibited to be less than 10d.

    参考文献
    [1] 李宪军, 邓美林, 何廷树. 装配式建筑套筒灌浆连接系统膨胀约束关键技术研究[J]. 建筑结构, 2021, 51(9): 43-48.LI X J, DENG M L, HE T S. Research on the key technology of restrained expansion of the sleeve grouting connection system in prefabricated building [J]. Building Structure, 2021, 51(9): 43-48. (in Chinese)
    [2] 毛小勇, 高奕昕. 约束浆锚搭接连接高温性能试验研究[J]. 建筑结构学报, 2020, 41(7): 117-123.MAO X Y, GAO Y X. Experimental research on connection performance of restraint grouting-anchoring overlap-joint of steel bar subjected to high temperature [J]. Journal of Building Structures, 2020, 41(7): 117-123. (in Chinese)
    [3] 胡少伟, 赵克宇, 喻江. 复合弯扭作用下预应力单箱组合梁的扭转承载能力分析[J]. 华北水利水电大学学报(自然科学版), 2015, 36(2): 1-6.HU S W, ZHAO K Y, YU J. Analysis on the torsional bearing capacity of prestressed single-box composite beam under combined bending and torsion [J]. Journal of North China University of Water Resources and Electric Power (Natural Science Edition), 2015, 36(2): 1-6. (in Chinese)
    [4] 聂建国, 熊辉, 胡少伟. 开口截面钢-混凝土组合梁弯扭性能的理论分析与试验研究[J]. 土木工程学报, 2004, 37(11): 6-10, 66.NIE J G, XIONG H, HU S W. Experimental analysis on steel-concrete composite beams with open section under combined flexure and torsion [J]. China Civil Engineering Journal, 2004, 37(11): 6-10, 66. (in Chinese)
    [5] 余琼, 许雪静, 尤高帅. 带肋钢筋与灌浆料黏结性能试验[J]. 哈尔滨工业大学学报, 2017, 49(12): 91-101.YU Q, XU X J, YOU G S. Experimental study on bond behavior for ribbed steel bars and grout [J]. Journal of Harbin Institute of Technology, 2017, 49(12): 91-101. (in Chinese)
    [6] WU Y T, XIAO Y, ANDERSON J C. Seismic behavior of PC column and steel beam composite moment frame with posttensioned connection [J]. Journal of Structural Engineering, 2009, 135(11): 1398-1407.
    [7] TAZARV M, SAIIDI M S. UHPC-filled duct connections for accelerated bridge construction of RC columns in high seismic zones [J]. Engineering Structures, 2015, 99: 413-422.
    [8] 金峤, 李京龙, 孙丽, 等. 含FRP约束环钢筋锚固性能试验[J]. 沈阳建筑大学学报(自然科学版), 2018, 34(6): 998-1007.JIN Q, LI J L, SUN L, et al. Experimental study on anchorage performance of steel bars with FRP confined rings [J]. Journal of Shenyang Jianzhu University (Natural Science), 2018, 34(6): 998-1007. (in Chinese)
    [9] 陈俊. 预制混凝土底层柱抗震性能试验研究与分析[D]. 长沙: 湖南大学, 2016.CHEN J. Experimental research and analysis on seismic performance of precast concrete bottom column [D]. Changsha: Hunan University, 2016. (in Chinese)
    [10] 陈俊, 肖岩, 尹齐. 预埋波纹套管的钢筋-高强浇筑料黏结锚固性能试验研究[J]. 建筑结构学报, 2015, 36(7): 140-147.CHEN J, XIAO Y, YIN Q. Bonding strength of rebar anchorage in embedded corrugated sleeve with high strength grout [J]. Journal of Building Structures, 2015, 36(7): 140-147. (in Chinese)
    [11] 陈俊, 肖岩. 纵筋浆锚连接预制柱的抗震性能试验研究[J]. 土木工程学报, 2016, 49(5): 63-73.CHEN J, XIAO Y. Experimental study on seismic behavior of precast concrete column with longitudinal reinforcement grouting-anchoring connections [J]. China Civil Engineering Journal, 2016, 49(5): 63-73. (in Chinese)
    [12] 何宇, 刘汗青, 霍静思, 等. 钢管混凝土预埋波纹管浆锚钢筋连接件抗拔性能试验研究[J]. 建筑钢结构进展, 2020, 22(3): 22-29.HE Y, LIU H Q, HUO J S, et al. Pull-out test study of rebar anchorage in embedded corrugated sleeve in the concrete-filled steel tubular column [J]. Progress in Steel Building Structures, 2020, 22(3): 22-29. (in Chinese)
    [13] 王浩, 柳家为, 石棚, 等. 钢筋-金属波纹管灌浆连接的锚固性能试验研究[J]. 东南大学学报(自然科学版), 2020, 50(2): 215-221.WANG H, LIU J W, SHI P, et al. Experimental study on anchorage performance of rebar-corrugated metal duct for grout splicing [J]. Journal of Southeast University (Natural Science Edition), 2020, 50(2): 215-221. (in Chinese)
    [14] HOSSEINI S J A, RAHMAN A B A, OSMAN M H, et al. Bond behavior of spirally confined splice of deformed bars in grout [J]. Construction and Building Materials, 2015, 80: 180-194.
    [15] HOSSEINI S J A, RAHMAN A B A. Effects of spiral confinement to the bond behavior of deformed reinforcement bars subjected to axial tension [J]. Engineering Structures, 2016, 112: 1-13.
    [16] WANG Y M, HU S W, HE Z. Mechanical and fracture properties of fly ash geopolymer concrete addictive with calcium aluminate cement [J]. Materials (Basel, Switzerland), 2019, 12(18): 2982.
    [17] ZHANG P, WANG K X, WANG J, et al. Mechanical properties and prediction of fracture parameters of geopolymer/alkali-activated mortar modified with PVA fiber and nano-SiO2 [J]. Ceramics International, 2020, 46(12): 20027-20037.
    [18] 潘南君. 预埋金属波纹管浆锚钢筋锚固性能试验研究[D]. 湖南 湘潭: 湘潭大学, 2018.PAN N J. Experimental study of anchoring performance of steel bars anchored into the embedded metal bellows [D]. Xiangtan, Hunan: Xiangtan University, 2018. (in Chinese)
    [19] 徐有邻, 沈文都, 汪洪. 钢筋砼粘结锚固性能的试验研究[J]. 建筑结构学报, 1994, 15(3): 26-37.XU Y L, SHEN W D, WANG H. An experimental study of bond-anchorage properties of bars in concrete [J]. Journal of Building Structures, 1994, 15(3): 26-37. (in Chinese)
    [20] WALKER P R, BATAYNEH M K, REGAN P E. Bond strength tests on deformed reinforcement in normal weight concrete [J]. Materials and Structures, 1997, 30(7): 424-429.
    [21] ALIAS A, ZUBIR M A, SHAHID K A, et al. Structural performance of grouted sleeve connectors with and without transverse reinforcement for precast concrete structure [J]. Procedia Engineering, 2013, 53: 116-123.
    [22] 鞠彦忠, 沈浩, 王德弘, 等. 活性粉末混凝土梁柱节点抗裂性能试验研究[J]. 中南大学学报(自然科学版), 2019, 50(5): 1203-1209.JU Y Z, SHEN H, WANG D H, et al. Experimental study on crack resistance of reactive powder concrete beam-column joints [J]. Journal of Central South University (Science and Technology), 2019, 50(5): 1203-1209. (in Chinese)
    [23] 邵卓民, 沈文都, 徐有邻. 钢筋砼的锚固可靠度及锚固设计[J]. 建筑结构学报, 1987, 8(4): 36-49.SHAO Z M, SHEN W D, XU Y L. The reliability and design for anchorage of reinforcing bars [J]. Journal of Building Structures, 1987, 8(4): 36-49. (in Chinese)
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郭家旭,胡少伟,齐浩,聂影,陶修,赵轩,罗李鹏.考虑灌浆料龄期的钢筋-金属波纹管浆锚连接锚固性能试验研究[J].土木与环境工程学报(中英文),2024,46(2):108-116. GUO Jiaxu, HU Shaowei, QI Hao, NIE Ying, TAO Xiu, ZHAO Xuan, LUO Lipeng. Experimental study on anchorage property of rebar-metallic bellows slurry anchor connection considering grout age[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2024,46(2):108-116.10.11835/j. issn.2096-6717.2022.056

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  • 收稿日期:2022-01-19
  • 在线发布日期: 2024-03-20
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