«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

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

卷:

40卷

期数:

2023年05期

页码:

89-98

栏目:

建筑结构

出版日期:

2023-09-15

文章信息/Info

Title:

Influence of double bar spacing on anchorage performance of concrete planting bar beams

文章编号:

1673-2049(2023)05-0089-10

作者:

阎西康^1,2,贾云飞¹,梁琳霄³,刁然治¹,王士达¹,谢函霖¹

(1. 河北工业大学 土木与交通学院,天津 300401; 2. 河北工业大学 河北省土木工程技术研究中心,天津 300401; 3. 北华航天工业学院 建筑工程学院,河北 廊坊 065000)

Author(s):

YAN Xikang^1,2, JIA Yunfei¹, LIANG Linxiao³, DIAO Ranzhi¹, WANG Shida¹, XIE Hanlin¹

(1. School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China; 2. Hebei Civil Engineering Technology Research Center, Hebei University of Technology, Tianjin 300401, China; 3. Architectural Engineering Institute, North China Institute of Aerospace Engineering, Langfang 065000, Hebei, China)

关键词:

混凝土植筋梁;  加固;  植筋间距;  锚固性能

Keywords:

concrete planting bar beam;  reinforcement;  planting bar spacing;  anchorage performance

分类号:

TU375.1

DOI:

10.19815/j.jace.2021.12002

文献标志码:

A

摘要:

为研究双植筋锚固间距对受弯植筋梁锚固性能的影响,对植筋间距2d(d为植筋直径)的双筋植筋梁进行了受弯加载试验,结合单植筋拉拔试验结果,对比了双植筋与单植筋构件的差异; 在试验基础上,利用ABAQUS有限元软件分析了植筋梁在不同植筋间距下力学性能的差异; 通过植筋的平均黏结应力和混凝土的等效塑性应变云图,找到了植筋梁的双筋界限间距; 通过不同植筋间距下黏结应力的关系,提出了与植筋间距系数相关的基本锚固深度计算公式。结果表明:由于2根植筋在混凝土中应力重叠作用的影响,当植筋间距较小时会导致植筋应力发展不充分,削弱植筋的锚固性能; 随着植筋间距增大,两植筋的应力重叠作用减弱,当植筋间距大于6d时可忽略植筋应力重叠作用带来的影响,故工程中梁式受弯构件的植筋间距建议大于6d; 针对实际工程中因原构件尺寸限制,植筋间距无法设计为6d以上的问题,建议适当增加锚固深度。

Abstract:

In order to study the effect of the anchorage spacing of double planting bars on the anchorage performance of bent planting bar beams, bending loading tests were conducted on double planting bar beams with a spacing of 2d(d is the diameter of planting bar)between planting bars. Based on the results of the single planting bar pull-out test, the differences between the double planting bar component and the single planting bar were compared. On the basis of experiments, the differences in mechanical properties of reinforced beams with different spacing of planting bars were analyzed using ABAQUS finite element software. The boundary spacing between the double bars of the reinforced concrete beam was found through the average bond stress of the planting bars and the equivalent plastic strain nephogram of the concrete. A basic anchoring depth calculation formula related to the spacing coefficient of planting bars was proposed based on the relationship between bonding stress under different spacing of planting bars. The results show that due to the impact of stress overlap between two planting bars in concrete, when the spacing between planting bars is small, it can lead to insufficient stress development and weaken the anchoring performance of planting bars. As the spacing between planting bars increases, the stress overlap between the two planting bars weakens. When the spacing between planting bars is greater than 6d, the impact of overlapping stress of planting bars can be ignored. Therefore, it is recommended that the spacing between planting bars for beam bending components in engineering should be greater than 6d. In response to the problem that the spacing between planting bars cannot be designed to be more than 6d due to the size limitations of the original components in practical engineering, it is recommended to increase the anchorage depth appropriately.

参考文献/References:

[1] LI Z L,YANG J M,KANG F L,et al.Mechanical property study on the planting bar strengthening structure based on MIDAS/Civil solid element[J].IOP Conference Series:Earth and Environmental Science,2019,267(4):042092.
[2]李 悦,张国胜,刘雄飞.混凝土加固植筋技术研究进展[J].建筑技术,2017,48(3):302-304.
LI Yue,ZHANG Guosheng,LIU Xiongfei.Research progress of post-installed rebar technology of concrete reinforcement[J].Architecture Technology,2017,48(3):302-304.
[3]DOYLE J M.Behavior of chemically bonded anchors[J].Journal of Structural Engineering,1995,121(2):386-388.
[4]阎 锋,张惠英.在钢筋混凝土基材上植筋的拉拔试验研究[J].建筑技术,2003,34(6):442-444.
YAN Feng,ZHANG Huiying.The research on the drawing test of planting bars in the reinforced concrete[J].Architecture Technology,2003,34(6):442-444.
[5]张建荣,石丽忠,杨建华,等.混凝土化学植筋锚固性能的试验研究[J].建筑结构,2006,36(3):17-21.
ZHANG Jianrong,SHI Lizhong,YANG Jianhua,et al.Experimental research on the behavior of chemical adhesive steel bar in concrete under tensile load[J].Building Structure,2006,36(3):17-21.
[6]刘羽纶,徐福泉,谢 剑,等.连接锚固钢筋受剪性能试验研究[J].建筑结构学报,2018,39(增2):374-379.
LIU Yulun,XU Fuquan,XIE Jian,et al.Experimental study on shear behavior of anchor steel connections[J].Journal of Building Structures,2018,39(S2):374-379.
[7]舒睿彬.植筋系统粘结滑移性能及受力机理研究[D].上海:同济大学,2008.
SHU Ruibin.Study on the bond-slip performance and load-transfer mechanism of bonded rebars system[D].Shanghai:Tongji University,2008.
[8]郑晓芬,张建荣,艾永江,等.植筋胶与混凝土界面结合性能的试验研究[J].结构工程师,2016,32(5):139-145.
ZHENG Xiaofen,ZHANG Jianrong,AI Yongjiang,et al.Experimental study on bonding behavior of adhesive and concrete interface[J].Structural Engineers,2016,32(5):139-145.
[9]程麦理,张 立,李青宁.植筋混凝土界面剪切性能试验与数值模拟[J].建筑结构,2019,49(15):104-109.
CHENG Maili,ZHANG Li,LI Qingning.Experiment and numerical simulation of shear performance of concrete interface for bonded rebars[J].Building Structure,2019,49(15):104-109.
[10]YAN X K,LIANG L X.Fatigue performance of post-installed anchorage beams[J].Construction and Building Materials,2019,229:116597.
[11]黎 群,张建荣,吴 进.钢筋混凝土梁纯弯段植筋试验研究[J].工业建筑,2007,37(增1):1265-1269.
LI Qun,ZHANG Jianrong,WU Jin.Experimental research on pure bending of concrete beam with adhesive reinforcing rods under static load[J].Industrial Construction,2007,37(S1):1265-1269.
[12]COOK R A,KUNZ J,FUCHS W,et al.Behavior and design of single adhesive anchors under tensile load in uncracked concrete[J].ACI Structural Journal,1998,95(1):9-26.
[13]张建荣,石丽忠,吴 进,等.植筋锚固拉拔试验及破坏机理研究[J].结构工程师,2004,20(5):47-51.
ZHANG Jianrong,SHI Lizhong,WU Jin,et al.Experimental research on the behavior of adhesive reinforcement under tensile load[J].Structural Engineers,2004,20(5):47-51.
[14]刘启真,唐兴荣.约束拉拔植筋锚固性能的试验研究[J].苏州科技大学学报(工程技术版),2020,33(2):18-22.
LIU Qizhen,TANG Xingrong.Experimental study on anchorage performance of restrained pull-out planting bars[J].Journal of Suzhou University of Science and Technology(Engineering and Technology),2020,33(2):18-22.
[15]阎西康,梁琳霄,梁 琛.疲劳荷载作用下植筋锚固粘结的滑移性能[J].土木与环境工程学报(中英文),2020,42(2):149-156.
YAN Xikang,LIANG Linxiao,LIANG Chen.Bond slip behavior of post-installed anchorage under fatigue load[J].Journal of Civil and Environmental Engineering,2020,42(2):149-156.
[16]何 勇,徐远杰,林 涛.混凝土结构的双筋粘结锚固性能试验研究[J].武汉大学学报(工学版),2003,36(2):88-91.
HE Yong,XU Yuanjie,LIN Tao.Experimental study on performance double adhesive anchors for strengthening concrete structure[J].Engineering Journal of Wuhan University,2003,36(2):88-91.
[17]淳 庆,邱洪兴,黄志诚,等.钢筋混凝土结构双筋植筋的锚固性能试验研究[J].工业建筑,2006,36(2):98-100,74.
CHUN Qing,QIU Hongxing,HUANG Zhicheng,et al.Experimental study on anchorage performance of double adhesive anchors for RC structures[J].Industrial Construction,2006,36(2):98-100,74.
[18]司伟建,周新刚,黄金枝,等.混凝土结构植筋粘结锚固性能的试验研究[J].建筑结构,2001,31(3):9-12.
SI Weijian,ZHOU Xingang,HUANG Jinzhi,et al.Experimental research on the bonding and anchoring behaviours of reinforced bars inserted in concrete structure[J].Building Structure,2001,31(3):9-12.
[19]赵 军,唐兴荣,刘启真,等.混凝土结构双筋植筋的锚固性能试验研究[J].建筑科学,2019,35(9):106-111.
ZHAO Jun,TANG Xingrong,LIU Qizhen,et al.Experimental study on anchorage property of double adhesive anchors for concrete structures[J].Building Science,2019,35(9):106-111.
[20]混凝土结构加固设计规范:GB 50367—2013[S].北京:中国建筑工业出版社,2014.
Code for design of strengthening concrete structure:GB 50367—2013[S].Beijing:China Architecture & Building Press,2014.

相似文献/References:

[1]周朝阳,黄林,贺学军.粘贴预应力碳纤维布钢梁的放张效应[J].建筑科学与工程学报,2010,27(04):14.
　ZHOU Chao-yang,HUANG Lin,HE Xue-jun.Effect of Releasing Pretension for Steel Beams Bonded with Prestressed Carbon Fiber Sheet[J].Journal of Architecture and Civil Engineering,2010,27(05):14.
[2]李俊华,于长海,唐跃锋,等.CFRP布加固火灾后钢筋混凝土柱的试验研究[J].建筑科学与工程学报,2011,28(04):48.
　LI Jun-hua,YU Chang-hai,TANG Yue-feng,et al.Experimental Research on Rehabilitation with CFRP Sheets for ReinforcedConcrete Columns After Exposure to Fire[J].Journal of Architecture and Civil Engineering,2011,28(05):48.
[3]王苏岩,余文华,曹怀超,等.CFRP加固高强混凝土方柱的延性性能试验分析与计算[J].建筑科学与工程学报,2012,29(02):21.
　WANG Su-yan,YU Wen-hua,CAO Huai-chao,et al.Experiment Analysis and Calculation on Ductility Behaviors of High-strength RC Square Columns Strengthened with CFRP[J].Journal of Architecture and Civil Engineering,2012,29(05):21.
[4]黄奕辉,王全凤.FRP加固砖砌体的抗剪承载力研究[J].建筑科学与工程学报,2009,26(01):12.
　HUANG Yi-hui,WANG Quan-feng.Research on Shear Capacity for Brick Masonry Strengthened by FRP[J].Journal of Architecture and Civil Engineering,2009,26(05):12.
[5]姚南,张天申,王元清,等.景观桥钢箱梁加固方案的设计计算及比较分析[J].建筑科学与工程学报,2009,26(02):68.
　YAO Nan,ZHANG Tian-shen,WANG Yuan-qing,et al.Designing Computation and Comparative Analysis on Strengthening Schemes of Sight Bridge's Steel Box Girder[J].Journal of Architecture and Civil Engineering,2009,26(05):68.
[6]钟龙,郑山锁,王斌,等.采用碳纤维布加固预应力混凝土吊车梁的设计方法[J].建筑科学与工程学报,2007,24(02):54.
　ZHONG Long,ZHENG Shan-suo,WANG Bin,et al.Design Method of Strengthening Prestressed Concrete Crane Girder Using CFRP[J].Journal of Architecture and Civil Engineering,2007,24(05):54.
[7]刘占省,白文燕,杜修力.融合数字孪生与混合现实的震损建筑指导加固方法[J].建筑科学与工程学报,2022,39(04):146.[doi:10.19815/j.jace.2022.04015]
　LIU Zhan-sheng,BAI Wen-yan,DU Xiu-li.Guidance Method for Earthquake-damaged Building Reinforcement Integrating Digital Twin and Mixed Reality[J].Journal of Architecture and Civil Engineering,2022,39(05):146.[doi:10.19815/j.jace.2022.04015]
[8]孔纲强,于江华,任连伟,等.微型钢管桩加固既有基础变形特性现场试验[J].建筑科学与工程学报,2022,39(05):222.[doi:10.19815/j.jace.2021.08066]
　KONG Gang-qiang,YU Jiang-hua,REN Lian-wei,et al.Field Test on Deformation Characteristics of Existing Foundation Reinforced by Micro Steel Pipe Pile[J].Journal of Architecture and Civil Engineering,2022,39(05):222.[doi:10.19815/j.jace.2021.08066]
[9]张双茁,高桂庆,赖金星,等.MJS不同加固方式对降低顶管施工影响的效果分析[J].建筑科学与工程学报,2023,40(05):183.[doi:10.19815/j.jace.2021.12101]
　ZHANG Shuangzhuo,GAO Guiqing,LAI Jinxing,et al.Analysis of effect of different reinforcement methods of MJS on reducing impact of pipe jacking construction[J].Journal of Architecture and Civil Engineering,2023,40(05):183.[doi:10.19815/j.jace.2021.12101]

备注/Memo

备注/Memo:

收稿日期:2021-12-05
基金项目:河北省自然科学基金项目(E2017202111); 河北省高等学校科学技术研究项目(QN2023245); 河北省住建厅建设科技研究项目(2023-2155); 廊坊市科学技术研究与发展计划项目(2022011042)
作者简介:阎西康(1966-),男,工学博士,教授,博士生导师,E-mail:tjsyxk@163.com。
通信作者:梁琳霄(1990-),女,工学博士,讲师,E-mail:15131429280@163.com。

常用功能

更新日期/Last Update: 2023-09-01