|本期目录/Table of Contents|

[1]戴绍斌,郑小林,黄 俊,等.组合方形灌浆套筒连接性能试验[J].建筑科学与工程学报,2020,37(02):54-61.[doi:10.19815/j.jace.2019.01041]
 DAI Shao-bin,ZHENG Xiao-lin,HUANG Jun,et al.Experiment on Behavior of Composite Square Grout-filled Pipe Splice[J].Journal of Architecture and Civil Engineering,2020,37(02):54-61.[doi:10.19815/j.jace.2019.01041]
点击复制

组合方形灌浆套筒连接性能试验(PDF)
分享到:

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
37卷
期数:
2020年02期
页码:
54-61
栏目:
出版日期:
2020-03-30

文章信息/Info

Title:
Experiment on Behavior of Composite Square Grout-filled Pipe Splice
文章编号:
1673-2049(2020)02-0054-08
作者:
戴绍斌12郑小林1黄 俊12李玉博1刘 轩1
(1. 武汉理工大学 土木工程与建筑学院,湖北 武汉 430070; 2. 武汉理工大设计研究院有限公司,湖北 武汉 430070)
Author(s):
DAI Shao-bin12 ZHENG Xiao-lin1 HUANG Jun12 LI Yu-bo1 LIU Xuan1
(1. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, Hubei, China; 2. Design & Research Institute Co., Ltd of Wuhan University of Technology, Wuhan 430070, Hubei, China)
关键词:
方形钢管 螺旋箍筋 组合套筒 锚固长度 黏结强度
Keywords:
square steel pipe spiral stirrup composite sleeve embedded length bond strength
分类号:
TU375.1
DOI:
10.19815/j.jace.2019.01041
文献标志码:
A
摘要:
针对套筒加工工艺、材料、成本等问题,提出了一种由标准无缝方形钢管与带肋钢筋以及螺旋箍筋通过组合拼装而成的新型组合方形灌浆套筒。利用该组合方形套筒,制作了9个7.5倍~12.5倍直径锚固长度的接头试件,通过轴拉试验对接头拉伸性能和工作机理进行研究。结果表明:所有试件均在接头外钢筋某处断裂,接头抗拉强度与连接钢筋抗拉强度标准值的比值均大于1.10,满足规程JGJ 107—2010中对Ⅰ级接头单向拉伸强度要求,当试件的锚固长度达7.5d(d为连接钢筋直径)即可满足条件; 套筒内腔中四角嵌入的焊接钢筋以及螺旋箍筋对套筒的约束机理和应变分布有重要的影响,嵌入的焊接钢筋能承担接头传过来的部分拉力,从而降低方形钢管表面的应力,同时焊接钢筋表面的横肋能有效增加套筒内壁与灌浆料之间的黏结力; 箍筋能进一步约束灌浆料从而提高接头的整体性; 套筒表面应变基本均匀分布,不会出现因套筒截面加工变形导致应变反转等现象。
Abstract:
Considering the problems of sleeve processing technology, materials, cost and etc., a new type of combined square grouting sleeve was proposed. The sleeve was assembled by standard seamless square steel pipe, ribbed steel bar and spiral stirrup. Using the combined square sleeve, nine joint specimens with a diameter of 7.5 times to 12.5 times the anchor length were fabricated, and the tensile properties and working mechanism of the joint were studied by the axial incremental tension test. The results show that all the test pieces are broken off somewhere outside the joint, and the ratio of the tensile strength of the joint to the standard value of the tensile strength of the steel bar is greater than 1.10, which satisfies the requirements for the tensile strength of the joint of Ⅰ grade in JGJ 107—2010. The condition can be satisfied when the anchor length of the piece reaches 7.5d(d is diameter of connecting steel bar). The welded steel bars embedded in the four corners of the sleeve cavity and the spiral stirrups have an important influence on the confinement mechanism and strain distribution of the sleeve. The embedded welded steel bars can bear part of the tensile force transmitted from the joint, thereby reducing the stress on the surface of the square steel pipe. The transverse rib on the surface of the welded steel bar can effectively increase the bonding force between the inner wall of the sleeve and the grouting material; the hoop can further restrain the grouting material to improve the integrity of the joint; the surface strain of the sleeve is evenly distributed, and the strain inversion caused by deformation of the section processing does not appear.

参考文献/References:

[1] MALVAR L J.Bond of Reinforcement Under Controlled Confinement[J].ACI Materials Journal,1992,89(6):593-601.
[2]MOOSAVI M,JAFARI A,KHOSRAVI A.Bond of Cement Grouted Reinforcing Bars Under Constant Radial Pressure[J].Cement and Concrete Composites,2005,27(1):103-109.
[3]LING J H,RAHMAN A B A,IBRAHIM I S,et al.Behaviour of Grouted Pipe Splice Under Incremental Tensile Load[J].Construction and Building Materials,2012,33:90-98.
[4]LING J H,RAHMAN A B A,IBRAHIM I S,et al.Feasibility Study of Grouted Splice Connector Under Tensile Load[J].Construction and Building Materials,2014,50:530-539.
[5]LING J H,RAHMAN A B A,IBRAHIM I S,et al.Tensile Capacity of Grouted Splice Sleeves[J].Engineering Structures,2016,111:285-296.
[6]EINEA A,YAMANE T,TADROS M K.Grout-filled Pipe Splices for Precast Concrete Construction[J].PCI Journal,1995,40(1):82-93.
[7]RAHMAN A B A,HONG T K,IBRAHIM I S,et al.Influence of Rectangular Steel Splice-sleeve for Precast Concrete Connection[J].Jurnal Teknologi:Sciences & Engineering,2015,77(12):45-54.
[8]RAHMAN A B A,MAHDINEZHAD M,IBRAHIM I S,et al.Bond Stress in Grouted Spiral Connections[J].Jurnal Teknologi:Sciences & Engineering,2015,77(23):49-57.
[9]郑永峰,郭正兴,曹 江.新型灌浆套筒的约束机理及约束应力分布[J].哈尔滨工业大学学报,2015,47(12):106-111.
ZHENG Yong-feng,GUO Zheng-xing,CAO Jiang.Confinement Mechanism and Confining Stress Distribution of New Grouting Coupler for Rebars Splicing[J].Journal of Harbin Institute of Technology,2015,47(12):106-111.
[10]郑永峰,郭正兴.变形灌浆套筒连接性能试验研究及有限元分析[J].建筑结构学报,2016,37(3):94-102.
ZHENG Yong-feng,GUO Zheng-xing.Experimental Study and Finite Element Analysis on Behavior of Deformed Gout-filled Pipe Splice[J].Journal of Building Structures,2016,37(3):94-102.
[11]ZHENG Y F,GUO Z X.Parametric Study on a Novel Grouted Rolling Pipe Splice for Precast Concrete Construction[J].Construction and Building Materials,2018,166:452-463.
[12]JGJ 107—2010,钢筋机械连接技术规程[S].
JGJ 107—2010,Technical Specification for Mechanical Splicing of Steel Reinforcing Bars[S].
[13]姜洪斌,张海顺,刘文清,等.预制混凝土插入式预留孔灌浆钢筋搭接试验[J].哈尔滨工业大学学报,2011,43(10):18-23.
JIANG Hong-bin,ZHANG Hai-shun,LIU Wen-qing,et al.Experimental Study on Plug-in Filling Hole for Steel Bar Lapping of Precast Concrete Structure[J].Journal of Harbin Institute of Technology,2011,43(10):18-23.
[14]余 琼,许志远,袁炜航,等.两种因素影响下套筒约束浆锚搭接接头拉伸试验[J].哈尔滨工业大学学报,2016,48(12):34-42.
YU Qiong,XU Zhi-yuan,YUAN Wei-hang,et al.Experimental Study of Grouted Sleeve Lapping Connectors Varied in Two Factors Under Tensile Load[J].Journal of Harbin Institute of Technology,2016,48(12):34-42.
[15]JG/T 398—2012,钢筋连接用灌浆套筒[S].
JG/T 398—2012,The Grouting Coupler for Rebars Splicing[S].
[16]赵卫平,肖建庄.带肋钢筋与混凝土间粘结滑移本构模型[J].工程力学,2011,28(4):164-171.
ZHAO Wei-ping,XIAO Jian-zhuang.On Bond-slip Constitutive Model Between Ribbed Steel Bars and Concrete[J].Engineering Mechanics,2011,28(4):164-171.
[17]JANSSON P O.Evaluation of Grout-filled Mechanical Splices for Precast Concrete[R].Lansing:Michigan Department of Transportation,2008.
[18]COOGLER K L,HARRIES K A,GALLICK M.Experimental Study of Offset Mechanical Lap Splice Behavior[J].ACI Structural Journal,2008,105(4):478-487.
[19]LIM C T.The Effect of Pitch Distance of Steel Spiral Reinforcement to the Performance of Grouted Sleeve Connector Under Direct Tensile Load[R].Kuala Lumpur:University of Technology Malaysia,2010.
[20]SOROUSHIAN P,CHOI K B,PARK G H,et al.Bond of Deformed Bars to Concrete:Effects of Confinement and Strength of Concrete[J].ACI Materials Journal,1991,88(3):227-232.
[21]LOH H Y.Development of Grouted Splice Sleeve and Its Performance Under Axial Tension[R].Kuala Lumpur:University of Technology Malaysia,2008.
[22]UNTRAUER R E,HENRY R L.Influence of Normal Pressure on Bond Strength[J].ACI Journal Proceedings,1965,65(5):577-585.
[23]ROBINS P J,STANDISH I G.The Influence of Lateral Pressure upon Anchorage Bond[J].Magazine of Concrete Research,1984,36(129):195-202.
[24]LEE G S.Parametric Studies of Sleeve Connector Using Steel Pipe With Spiral Steel for Precast Concrete Connection[R].Kuala Lumpur:University of Technology Malaysia,2008.

相似文献/References:

[1]梁力,李鑫,李明,等.预制混凝土桩体抗扭设计及试验[J].建筑科学与工程学报,2009,26(02):87.
 LIANG Li,LI Xin,LI Ming,et al.Design and Experiment on Torsional Behaviors of Precast Concrete Pile Body[J].Journal of Architecture and Civil Engineering,2009,26(02):87.

备注/Memo

备注/Memo:
收稿日期:2019-05-17
基金项目:湖北省建设科技计划项目(20171103); 武汉市城乡建设委员会科技计划项目(201812); “十二五”国家科技支撑计划项目(2011BAJ03B03)
作者简介:戴绍斌(1965-),男,湖北武汉人,教授,博士研究生导师,工学博士,E-mail:dsb123@whut.edu.cn。
更新日期/Last Update: 2020-04-21