«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03期

页码:

40-49

栏目:

建筑结构

出版日期:

2023-05-20

文章信息/Info

Title:

Analysis of reinforcement performance of CFRP strips on concrete columns with different cross-sections

文章编号:

1673-2049(2023)03-0040-10

作者:

程东辉,姚宇航,王 丽

(东北林业大学 土木工程学院,黑龙江 哈尔滨 150040)

Author(s):

CHENG Donghui, YAO Yuhang, WANG Li

(School of Civil Engineering, Northeast Forestry University, Harbin 150040, Heilongjiang, China)

关键词:

钢筋混凝土柱;  CFRP条带;  轴心受压;  力学性能

Keywords:

reinforced concrete column;  CFRP strip;  axial compression;  mechanical performance

分类号:

TU398

DOI:

10.19815/j.jace.2021.12004

文献标志码:

A

摘要:

为了探究碳纤维增强复合材料(CFRP)布对不同截面混凝土柱的加固性能,以条带用量、条带净间距、条带净宽等参数为控制变量,设计并制作了3组钢筋混凝土柱,第1组试件为方形截面柱,第2组试件为T形截面柱,第3组试件是在第2组试件的基础上,在翼缘与腹板转角处利用角钢对CFRP布进行锚固。通过对3组钢筋混凝土试件进行轴心受压试验,得到了试件极限荷载、轴向变形以及破坏形态等试验数据。采用有限元软件ABAQUS建立了一批CFRP布约束状态下的混凝土短柱,并对其力学性能进行了分析。根据试验数据及有限元分析结果,提出了CFRP条带约束状态下方形截面钢筋混凝土柱和角钢锚固CFRP条带约束状态下T形截面钢筋混凝土柱极限承载力的计算公式。结果表明:随着CFRP条带用量的增加,加固混凝土柱的承载力增大; 当CFRP条带的用量相同时,极限承载力随条带净间距的减小而增大; 使用角钢在T形截面柱的翼缘与腹板转角位置对CFRP条带锚固,可以更好地发挥出CFRP条带的抗拉强度,使混凝土柱的极限承载力有所提升。

Abstract:

In order to explore the reinforcement performance of carbon fiber reinforced polymer(CFRP)strip on concrete columns with different cross-sections, three groups of reinforced concrete columns were designed and fabricated with parameters such as strip amount, net spacing and net width of strips as control variables. The first group of specimens was a square section, the second group of specimens was a T-shaped section, the third group of specimens was based on the second group of specimens, and angle steel was used to anchor CFRP sheets at the corner of flange and web. Axial compression tests were carried out on three groups of reinforced concrete specimens, and the ultimate load, axial deformation and failure mode of the specimens were obtained. Based on the experimental data, a number of concrete short columns confined by CFRP strip were established by finite element software ABAQUS, and their mechanical properties were analyzed. According to the experimental data and finite element analysis results, the calculation formulas of ultimate bearing capacity of square section reinforced concrete columns and T-shaped section reinforced concrete columns confined by CFRP strips and angle steel anchored CFRP strips were proposed. The results show that the bearing capacity of reinforced concrete columns increases with the increase of CFRP strip usage. When the amount of CFRP strips is the same, the ultimate bearing capacity increases with the decrease of the net spacing of the strips. The use of angle steel to anchor CFRP strips at the flange and web corners of T-shaped columns can better exert the tensile strength of CFRP strips and improve the ultimate bearing capacity of concrete columns.

参考文献/References:

[1] CHEN Z P,XU J J,CHEN Y L,et al.Axial compression ratio limit values for steel reinforced concrete(SRC)special shaped columns[J].Steel and Composite Structures,2016,20(2):295-316.
[2]WU H P,QIAO Q Y,CAO W L,et al.Axial compressive behavior of special-shaped concrete filled tube mega column coupled with multiple cavities[J].Steel and Composite Structures,2017,23(6):633-646.
[3]YANG Y,ZHANG L,XUE Y C,et al.Experimental research on the fire performance of a special cross-shaped composite column with a high-strength concrete-filled steel tubular core[J].Advances in Structural Engineering,2018,21(11):1608-1619.
[4]王晓林.钢筋混凝土异形柱结构及其构件受力性能分析[D].太原:太原理工大学,2011.
WANG Xiaolin.The mechanical behavior analysis of R.C structure with specially shaped conlumns and related components[D].Taiyuan:Taiyuan University of Technology,2011.
[5]薛建阳,刘祖强,赵鸿铁,等.型钢混凝土异形柱结构受力性能研究的发展现状[J].工业建筑,2014,44(3):134-146.
XUE Jianyang,LIU Zuqiang,ZHAO Hongtie,et al.State-of-the-art research on mechanical performance of steel reinforced concrete irregular section column structures[J].Industrial Construction, 2014,44(3):134-146.
[6]崔熙光,万广宇,田 虹.CFRP加固钢筋混凝土腹板受拉L形柱的试验研究[J].沈阳建筑大学学报(自然科学版),2008,24(3):402-406.
CUI Xiguang,WAN Guangyu,TIAN Hong.Experimental study on reinforced concrete web plate tensioned L-shaped columns strengthened with CFRP[J].Journal of Shenyang Jianzhu University(Natural Science),2008,24(3):402-406.
[7]YOUSSEF M N,FENG M Q,MOSALLAM A S.Stress-strain model for concrete confined by FRP composites[J].Composites Part B:Engineering,2007,38(5/6):614-628.
[8]高丹盈,王廷彦,何亚军.碳纤维布加固钢筋混凝土短梁受弯试验及承载力计算[J].建筑结构学报,2017,38(11):122-131.
GAO Danying,WANG Tingyan,HE Yajun.Flexural test and calculation on capacity of reinforced concrete short beam strengthened by CFRP sheets[J].Journal of Building Structures,2017,38(11):122-131.
[9]薛鹏娜.钢筋混凝土轴心受压构件复合加固的试验研究[D].武汉:华中科技大学,2006.
XUE Pengna.Experimental research on uniaxial compressing structure member with composite[D].Wuhan:Huazhong University of Science and Technology,2006.
[10]卢亦焱,史健勇,赵国藩.碳纤维布和角钢复合加固轴心受压混凝土柱的试验研究[J].建筑结构学报,2003,24(5):18-23.
LU Yiyan,SHI Jianyong,ZHAO Guofan.Experimental research on concrete columns strengthened with the combination of CFRP and angle steel[J].Journal of Building Structures,2003,24(5):18-23.
[11]WANG K,CHEN Y,WAN J,et al.Compressive behavior of post-heated circular CFST short columns externally strengthened with CFRP sheets[J].Journal of Adhesion Science and Technology,2018,32(8):833-853.
[12]HEGDE S,SHENOY B S,CHETHAN K N.Review on carbon fiber reinforced polymer(CFRP)and their mechanical performance[J].Materials Today:Proceedings,2019,19:658-662.
[13]DURAN B,TUNABOYU O,KAPLAN O,et al.Effectiveness of seismic repairing stages with CFRPs on the seismic performance of damaged RC frames[J].Structural Engineering and Mechanics,2018,67(3):233-244.
[14]来文汇,潘景龙,金熙男.三种不同截面形状FRP约束混凝土应力-应变关系的试验研究[J].工业建筑,2004,34(10):81-84.
LAI Wenhui,PAN Jinglong,JIN Xinan.Compressive stress-strain behavior of concrete confined by fiber reinforced polymer[J].Industrial Construction,2004,34(10):81-84.
[15]谢志红,李健章,郭永昌.碳纤维增强复合材料条带约束圆弧化方柱轴压性能试验研究[J].工业建筑,2016,46(3):9-13.
XIE Zhihong,LI Jianzhang,GUO Yongchang.Experimental study of axial compressive properties of circularized square columns confined by CFRP strips[J].Industrial Construction,2016,46(3):9-13.
[16]彭亚萍,刘增夕,马 明.条带式FRP约束混凝土方柱的轴压承载力分析[J].武汉理工大学学报,2010,32(3):24-28.
PENG Yaping,LIU Zengxi,MA Ming.Analysis of axial compressive bearing capacity of square concrete columns confined with striped FRP[J].Journal of Wuhan University of Technology,2010,32(3):24-28.
[17]贾明英,程 华,陈小兵,等.不同FRP约束混凝土圆柱轴心受压性能试验研究[J].工业建筑,2002,32(5):65-67,56.
JIA Mingying,CHENG Hua,CHEN Xiaobing,et al.Experimental research of properties of circular-columns in different FRP shells under axial compression[J].Industrial Construction,2002,32(5):65-67,56.
[18]程东辉,杨燕红.预应力CFRP布加固负载混凝土柱轴心受压性能研究[J].建筑科学与工程学报,2017,34(4):34-40.
CHENG Donghui,YANG Yanhong.Research on axial compressive properties of preloaded concrete columns strengthened with prestressed CFRP sheets[J].Journal of Architecture and Civil Engineering,2017,34(4):34-40.
[19]程东辉,王孝婷,范永萱,等.CFRP条带加固方形截面混凝土柱力学性能研究[J].建筑科学,2021,37(11):105-112.
CHENG Donghui,WANG Xiaoting,FAN Yongxuan,et al.Research on mechanical properties of concrete columns with square section strengthened with CFRP strips[J].Building Science,2021,37(11):105-112.
[20]程东辉,高佩罡,曹佳丽.CFRP布带加固T形截面混凝土柱轴心受压试验[J].沈阳建筑大学学报(自然科学版),2021,37(2):235-242.
CHENG Donghui,GAO Peigang,CAO Jiali.Axial compression of T-section concrete columns strengthened with CFRP strip[J].Journal of Shenyang Jianzhu University(Natural Science),2021,37(2):235-242.
[21]混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2010.
Code for design of concrete structures:GB 50010—2010[S].Beijing:China Architecture & Building Press,2010.

相似文献/References:

[1]仇建磊,贡金鑫.基于简化修正压力场理论的钢筋混凝土柱荷载-变形分析[J].建筑科学与工程学报,2016,33(04):51.
　QIU Jian-lei,GONG Jin-xin.Analysis of Load-deformation of Reinforced Concrete Columns Based on Simplified Modified Compression Field Theory[J].Journal of Architecture and Civil Engineering,2016,33(03):51.
[2]田 力,胡 杨.汽车撞击和爆炸共同作用下钢筋混凝土柱的动力响应与破坏模式[J].建筑科学与工程学报,2017,34(01):41.
　TIAN Li,HU Yang.Dynamic Response and Failure Modes of Reinforced Concrete Columns Under Vehicle Impact and Blast[J].Journal of Architecture and Civil Engineering,2017,34(03):41.
[3]田 力,朱运华.冲击波和破片联合作用下RC柱的损伤分析[J].建筑科学与工程学报,2017,34(02):64.
　TIAN Li,ZHU Yun-hua.Damage Analysis of RC Column Subjected to Synergistic Effects of Blast Wave and Fragmentation[J].Journal of Architecture and Civil Engineering,2017,34(03):64.
[4]许 斌,王治原,陈洪兵.钢筋混凝土柱动力滞回性能两尺度数值模拟[J].建筑科学与工程学报,2017,34(03):16.
　XU Bin,WANG Zhi-yuan,CHEN Hong-bing.Numerical Simulation on Dynamic Hysteretic Behavior of Reinforced Concrete Columns with Two-scale Model[J].Journal of Architecture and Civil Engineering,2017,34(03):16.
[5]张勤,贡金鑫.弯剪破坏钢筋混凝土柱的荷载-变形关系[J].建筑科学与工程学报,2010,27(03):78.
　ZHANG Qin,GONG Jin-xin.Load-deformation Relations of Reinforced Concrete Columns Under Flexural-shear Failure[J].Journal of Architecture and Civil Engineering,2010,27(03):78.
[6]魏巍巍,贡金鑫.钢筋混凝土柱荷载-变形计算的理论模型[J].建筑科学与工程学报,2012,29(01):38.
　WEI Wei-wei,GONG Jin-xin.Theoretical Models of Load-deformation Calculation for Reinforced Concrete Columns[J].Journal of Architecture and Civil Engineering,2012,29(03):38.
[7]宋晓勇,邹银生,涂文戈,等.受火钢筋混凝土柱截面极限承载力研究[J].建筑科学与工程学报,2005,22(04):61.
　Research on ultimate load capacity of cross section of reinforced concrete columns exposing to fire.Research on ultimate load capacity of cross section of reinforced concrete columns exposing to fire[J].Journal of Architecture and Civil Engineering,2005,22(03):61.
[8]霍静思,杨鑫鑫,李 智.考虑初始荷载的火灾后RC柱抗震性能[J].建筑科学与工程学报,2019,36(05):21.
　HUO jing-si,YANG Xin-xin,LI Zhi.Seismic Performance of Post-fire RC Columns with Pre-load[J].Journal of Architecture and Civil Engineering,2019,36(03):21.

备注/Memo

备注/Memo:

收稿日期:2021-12-03
基金项目:哈尔滨市科技创新人才研究专项基金项目(2012RFXXS111); 黑龙江省教育厅基本科研业务项目(135309358);
中央高校基本科研业务费创新团队与重大项目培育资金项目(2572016EBC1)
作者简介:程东辉(1971-),男,工学博士,教授,博士生导师,E-mail:chengdonghui2000@126.com。

常用功能

更新日期/Last Update: 2023-05-20