灌浆缺陷对钢筋套筒灌浆连接接头强度影响的试验研究
详细信息    查看全文 | 推荐本文 |
  • 英文篇名:Experimental study on influence of grouting defect on joint strength of grout sleeve splicing of rebars
  • 作者:李向民 ; 高润东 ; 许清风 ; 王卓琳 ; 张富文
  • 英文作者:Li Xiangmin;Gao Rundong;Xu Qingfeng;Wang Zhuolin;Zhang Fuwen;Shanghai Key Laboratory of Engineering Structure Safety,Shanghai Research Institute of Building Sciences;
  • 关键词:钢筋套筒灌浆连接 ; 灌浆缺陷 ; 强度 ; 破坏形态
  • 英文关键词:grout sleeve splicing of rebars;;grouting defect;;strength;;failure mode
  • 中文刊名:JCJG
  • 英文刊名:Building Structure
  • 机构:上海市建筑科学研究院上海市工程结构安全重点实验室;
  • 出版日期:2018-04-10
  • 出版单位:建筑结构
  • 年:2018
  • 期:v.48;No.475
  • 基金:上海市科委课题(16DZ1201805)
  • 语种:中文;
  • 页:JCJG201807010
  • 页数:5
  • CN:07
  • ISSN:11-2833/TU
  • 分类号:57-61
摘要
钢筋套筒灌浆连接是装配整体式混凝土结构的核心,对结构整体性能至关重要。针对适应14,20,25mm三种直径的钢筋套筒灌浆连接接头GTZQ4-14,GTZQ4-20,GTZQ4-25,通过在套筒内下段钢筋锚固段底部设置灌浆缺陷,研究了不同大小的缺陷对接头对中单向拉伸强度的影响。研究结果表明,对于常用型号灌浆套筒,当套筒端头灌浆缺陷长度不超过套筒内一侧钢筋锚固长度(8d)的30%时,其接头的对中单向拉伸强度仍能符合要求。研究结果可为套筒灌浆质量检测评估和后续整治提供依据。
        Grout sleeve splicing of rebars is the core of monolithic precast concrete structure,which is quite important to the integrated performance of structure. For rebars' grout sleeve splicing joints of GTZQ4-14,GTZQ4-20 and GTZQ4-25 which adapt to three kinds of rebar diameter of 14 mm,20 mm and 25 mm,the grouting defects were set at the bottom of anchor segment of the lower rebar in the sleeve,and the influences of different size of defects on the centered uniaxial tensile strength of joint were studied. Results indicate that for common type of grout sleeves,when the grouting defect length is not more than 30% of the any side rebar anchor length( 8 d) in the sleeve,the centered uniaxial tensile strength of joint still meets the standard requirement. The research achievement can be used to evaluate the testing result of sleeve grouting quality,and further provides the basis for whether or not the grouting defect need to be treated.
引文
[1]KIM H K.Bond strength of mortar-filled steel pipe splices reflecting confining effect[J].Journal of Asian Architecture and Building Engineering,2012,11(1):125-132.
    [2]LING J H,RAHMAN A B A,IBRAHIM I S,et al.Behavior of grouted pipe splice under incremental tensile load[J].Construction and Building Materials,2012,33(3):90-98.
    [3]HENIN E,MORCOUS G.Non-proprietary bar splice sleeve for precast concrete construction[J].Engineering Structures,2015,83(1):154-162.
    [4]秦珩,钱冠龙.钢筋套筒灌浆连接施工质量控制措施[J].施工技术,2013,42(14):113-117.
    [5]吴小宝,林峰,王涛.龄期和钢筋种类对钢筋套筒灌浆连接受力性能影响的试验研究[J].建筑结构,2013,43(14):77-82.
    [6]王东辉,柳旭东,刘英亮,等.水泥灌浆料套筒连接接头拉伸极限承载力试验研究[J].建筑结构,2015,45(6):21-23.
    [7]郑永峰.GDPS灌浆套筒钢筋连接技术研究[D].南京:东南大学,2016.
    [8]高润东,李向民,王卓琳,等.基于预埋钢丝拉拔法的套筒灌浆饱满度检测技术研究[J].施工技术,2017,46(17):1-5.
    [9]张富文,李向民,高润东,等.便携式X射线技术检测套筒灌浆密实度研究[J].施工技术,2017,46(17):6-9,61.
    [10]钢筋连接用灌浆套筒:JG/T 398—2012[S].北京:中国标准出版社,2013.
    [11]钢筋连接用套筒灌浆料:JG/T 408—2013[S].北京:中国标准出版社,2013.
    [12]钢筋套筒灌浆连接应用技术规程:JGJ 355—2015[S].北京:中国建筑工业出版社,2015.
    [13]钢筋混凝土用钢第2部分:热轧带肋钢筋:GB1499.2—2007[S].北京:中国标准出版社,2007.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700