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

卷:

39卷

期数:

2022年06期

页码:

113-121

栏目:

结构工程

出版日期:

2022-11-30

文章信息/Info

Title:

Experimental Research on FRP-steel Composite Tube Confined High-strength Concrete Short Column Under Axial Compression

文章编号:

1673-2049(2022)06-0113-09

作者:

张剑瑞¹,何泽朝²,马恺泽²

(1. 西安长安大学工程设计研究院有限公司,陕西 西安 710061; 2. 长安大学 建筑与土木工程学院,陕西 西安 710061)

Author(s):

ZHANG Jian-rui¹, HE Ze-zhao², MA Kai-ze²

(1. The Engineering Design Academy of Chang'an University Co., Ltd., Xi'an, Xi'an 710061, Shaanxi, China; 2. College of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China)

关键词:

FRP-钢复合管;  轴心受压;  极限承载力;  变形能力;  峰值应变

Keywords:

FRP-steel composite tube;  axial compression;  ultimate bearing capacity;  deformation capacity;  peak strain

分类号:

TU398.9

DOI:

10.19815/j.jace.2021.11019

文献标志码:

A

摘要:

为研究纤维增强复合材料(FRP)-钢复合管约束高强混凝土短柱的轴压性能,以混凝土强度、钢管厚度、FRP层数和种类为参数开展了轴压试验研究,分析了试件的约束机制、破坏机理、轴向荷载-应变曲线和环向荷载-应变曲线。结果表明:所有试件表现出相似的破坏特征,即FRP发生断裂、钢管鼓曲变形明显,增加钢管厚度和混凝土强度均可有效提高短柱的极限承载力,但增加混凝土强度会降低短柱的变形能力,加快其承载力下降速率; 增加FRP层数可以明显提高短柱的承载能力和塑性变形能力,并延缓承载力下降速率,但对短柱弹性段和下降段的刚度以及强化平台段影响较小; 碳纤维增强复合材料(CFRP)对短柱极限承载力的提高要优于玻璃纤维增强复合材料(GFRP),但CFRP约束的短柱承载力下降速率更快; 与CFRP相比,GFRP对短柱刚度退化的延缓作用要更明显; FRP断裂时,测点位置CFRP、GFRP的应变仅为极限应变的0.54倍、0.56倍; 提出的短柱轴压承载力和峰值应变计算方法的计算结果与试验结果吻合良好。

Abstract:

An experimental study on high-strength concrete short columns confined by FRP-steel composite tube was carried out to study the axial compression performance, and the variables included the strength of concrete, the thickness of steel tube, the layer and type of FRP. The restraint mechanism, failure mechanism, axial and circumferential load-vertical strain curves of the specimens were investigated. The results show that all specimens show similar failure modes, FRP is broken and the steel is buckled and deformed obviously. The increases in the thickness of steel tube and strength of concrete can effectively improve the ultimate bearing capacity of the short columns, but the increase of concrete strength weakens the deformation capacity and increases the degradation rate of the bearing capacity. The increase in the layer number of FRP improves the bearing and plastic deformation capacities of the short columns, and decreases the degradation rate of the bearing capacity, but it has little effect on the stiffness in the elastic and decline stages and the strengthening platform stage. The improvement of CFRP on the bearing capacity is more obvious than that of GFRP, but the short columns confined by CFPR shows a faster degradation rate in the bearing capacity. Compared with CFRP, GFRP delays the stiffness degradation of short columns more obviously. When FRP breaks, the strains of CFRP and GFRP at the measured point are only 0.54 times and 0.56 times of the limit strain. The calculated results of the proposed calculation methods of axial bearing capacity and peak strain of short columns are in good agreement with the experimental results.

参考文献/References:

[1] 黄煜镔,钱觉时.龄期和养护方式对高强混凝土力学性能的影响[J].硅酸盐通报,2007,26(3):427-430.
HUANG Yu-bin,QIAN Jue-shi.The Influence on High Strength Concrete Mechanical Properties by Age and Curing Condition[J].Bulletin of the Chinese Ceramic Society,2007,26(3):427-430.
[2]祖 坤,熊二刚,宋良英,等.高强混凝土构件力学性能研究综述[J].硅酸盐通报,2019,38(10):3178-3192.
ZU Kun,XIONG Er-gang,SONG Liang-ying,et al.Review on Mechanical Properties of High-strength Concrete Members[J].Bulletin of the Chinese Ceramic Society,2019,38(10):3178-3192.
[3]HUNG C C,HSIEH P L.Comparative Study on Shear Failure Behavior of Squat High-strength Steel Reinforced Concrete Shear Walls with Various High-strength Concrete Materials[J].Structures,2020,23:56-68.
[4]史亚涛,胡忠君,谈明睿,等.CFRP布约束方钢管混凝土短柱轴压性能试验研究[J].混凝土,2021(1):1-5.
SHI Ya-tao,HU Zhong-jun,TAN Ming-rui,et al.Experimental Study on Axial Compression Performance of CFRP-confined Square Concrete-filled Steel Tube Short Columns[J].Concrete,2021(1):1-5.
[5]张倚天,肖 岩.FRP约束方钢管混凝土短柱轴压性能研究[J].湖南大学学报(自然科学版),2019,46(11):50-56.
ZHANG Yi-tian,XIAO Yan.Study on Behaviors of FRP Confined Stub Concrete Filled Square Steel Tubes Under Axial Load[J].Journal of Hunan University(Natural Sciences),2019,46(11):50-56.
[6]张昆昆,廖飞宇,黄志伟.CFRP加固带球冠形脱空缺陷的钢管混凝土短柱轴压性能研究[J].建筑结构学报,2019,40(增1):220-225.
ZHANG Kun-kun,LIAO Fei-yu,HUANG Zhi-wei.Axial Compression Behavior of CFRP Reinforced Concrete Filled Steel Tubes with Spherical-cap Gap[J].Journal of Building Structures,2019,40(S1):220-225.
[7]顾维平,蔡绍怀,冯文林.钢管高强混凝土的性能与极限强度[J].建筑科学,1991,7(1):23-27.
GU Wei-ping,CAI Shao-huai,FENG Wen-lin.Behavior and Ultimate Strength of Steel Tubes Filled with High-strength Concrete[J].Building Science,1991,7(1):23-27.
[8]JIN L,FAN L L,LI D,et al.Size Effect of Square Concrete-filled Steel Tubular Columns Subjected to Lateral Shear and Axial Compression:Modelling and Formulation[J].Thin-walled Structures,2020,157:107158.
[9]吴炎海,林震宇.钢管活性粉末混凝土轴压短柱受力性能试验研究[J].中国公路学报,2005,18(1):57-62.
WU Yan-hai,LIN Zhen-yu.Experimental Study of Behavior on RPC Filled Steel Tubular Stub Columns Under Axial Compression[J].China Journal of Highway and Transport,2005,18(1):57-62.
[10]韦建刚,罗 霞,欧智菁,等.圆高强钢管超高性能混凝土短柱轴压性能试验研究[J].建筑结构学报,2020,41(11):16-28.
WEI Jian-gang,LUO Xia,OU Zhi-jing,et al.Experimental Study on Axial Compressive Behavior of Circular UHPC Filled High-strength Steel Tube Short Columns[J].Journal of Building Structures,2020,41(11):16-28.
[11]夏 松,卢得仁,丁发兴.带拉筋方中空夹层钢管混凝土轴压短柱受力性能研究[J].建筑结构学报,2017,38(增1):204-209.
XIA Song,LU De-ren,DING Fa-xing.Experiment Study of Stirrup-confined Concrete-filled Square Double-skin Steel Tubular Stub Columns Under Axial Loading[J].Journal of Building Structures,2017,38(S1):204-209.
[12]李 斌,郭世壮,高春彦.带肋薄壁方钢管混凝土轴压短柱受力性能试验研究[J].建筑结构学报,2017,38(增1):218-225.
LI Bin,GUO Shi-zhuang,GAO Chun-yan.Experimental Research on Mechanical Behavior of Concrete-filled Thin-walled Stiffened Square Steel Tubular Short Column Under Axial Load[J].Journal of Building Structures,2017,38(S1):218-225.
[13]邓宗才,阚德新,王 力,等.HFRP约束长龄期混凝土柱轴压性能的试验研究[J].北京工业大学学报,2011,37(9):1367-1371.
DENG Zong-cai,KAN De-xin,WANG Li,et al.Experimental Study on Mechanical Property of Long-age Concrete Columns Confined by HFRP Under Axial Compression[J].Journal of Beijing University of Technology,2011,37(9):1367-1371.
[14]马 高,陈晓煌.BFRP约束损伤混凝土圆柱体长细比效应[J].建筑结构,2020,50(24):91-98.
MA Gao,CHEN Xiao-huang.Slenderness Ratio Effect of BFRP-confined Damaged Concrete Cylinders[J].Building Structure,2020,50(24):91-98.
[15]SHAYANFAR J,REZAZADEH M,BARROS J A.Analytical Model to Predict Dilation Behavior of FRP Confined Circular Concrete Columns Subjected to Axial Compressive Loading[J].Journal of Composites for Construction,2020,24(6):91-98.
[16]魏 洋,李国芬,曹 兴.不同径厚比下纤维-钢复合管混凝土柱轴压性能[J].建筑结构,2014,44(21):32-35,6.
WEI Yang,LI Guo-fen,CAO Xing.Axial Compressive Behavior of Concrete-filled FRP-steel Composite Tubular Columns with Different Diameter-thickness Ratios[J].Building Structure,2014,44(21):32-35,6.
[17]郭 莹,许天祥,刘界鹏.圆CFRP-钢复合管约束高强混凝土短柱轴压试验研究[J].建筑结构学报,2019,40(5):124-131.
GUO Ying,XU Tian-xiang,LIU Jie-peng.Experimental Study on Axial Behavior of Circular CFRP-steel Composite Tubed High-strength Concrete Stub Columns[J].Journal of Building Structures,2019,40(5):124-131.
[18]王吉忠,刘建伟,杨 柳.CFRP-钢复合管约束型钢高强混凝土短柱的轴压力学性能[J].建筑科学与工程学报,2017,34(2):48-55.
WANG Ji-zhong,LIU Jian-wei,YANG Liu.Mechanical Behavior of CFRP-steel Composite Tube Confined Steel High Strength Reinforced Concrete Stub Columns Under Axial Compression[J].Journal of Architecture and Civil Engineering,2017,34(2):48-55.
[19]XIAO Y,HE W H,CHOI K K.Confined Concrete-filled Tubular Columns[J].Journal of Structural Engineering,2005,131(3):488-497.
[20]PARK J W,HONG Y,CHOI S M.Behaviors of Concrete Filled Square Steel Tubes Confined by Carbon Fiber Sheets(CFS)Under Compression and Cyclic Loads[J].Steel and Composite Structures,2010,10:187-205.
[21]碳纤维片材加固修复混凝土结构技术规程:CECS 146:2003[S].北京:中国计划出版社,2003.
Technical Specification for Strengthening Concrete Structures with Carbon Fiber Reinforced Polymer Laminate:CECS 146:2003[S].Beijing:China Planning Press,2003.
[22]混凝土结构试验方法标准:GB/T 50152—2012[S].北京:中国建筑工业出版社,2012.
Standard for Test Method of Concrete Structures:GB/T 50152—2012[S].Beijing:China Architecture & Building Press,2012.
[23]邓宗才,孙 彤,张亚宁.CFRP-钢复合管约束UHPC轴压短柱试验研究[J].哈尔滨工程大学学报,2020,41(11):1695-1702.
DENG Zong-cai,SUN Tong,ZHANG Ya-ning.Experimental Study of the Axial Behavior of Carbon Fiber-reinforced Polymer-steel Composite Tubes-confined UHPC Stub Columns[J].Journal of Harbin Engineering University,2020,41(11):1695-1702.

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[1]裴万吉,赵均海,魏雪英.钢管混凝土的截面形式及其承载力分析[J].建筑科学与工程学报,2006,23(01):49.
　PEI Wan-ji,ZHAO Jun-hai,WEI Xue-ying.Analysis of Section Types of Concrete-Filled Steel Tube and Its Load Capacity[J].Journal of Architecture and Civil Engineering,2006,23(06):49.
[2]周宏宇,袁 慧,邢晓帅,等.钢筋混凝土柱轴心受压动态破坏尺寸效应[J].建筑科学与工程学报,2019,36(05):62.
　ZHOU Hong-yu,YUAN Hui,XING Xiao-shuai,et al.Size Effect of Dynamic Failure of Reinforced Concrete Column Under Axial Compression[J].Journal of Architecture and Civil Engineering,2019,36(06):62.
[3]邓宗才,姚军锁.箍筋约束超高性能混凝土柱受压性能研究进展[J].建筑科学与工程学报,2020,37(01):14.[doi:10.19815/j.jace.2019.01046]
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[4]高小育,段 海,杨正朴,等.CFRP加固圆形钢管抗压承载力研究[J].建筑科学与工程学报,2020,37(06):55.
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[6]程东辉,姚宇航,王 丽.CFRP布对不同截面混凝土柱加固性能分析[J].建筑科学与工程学报,2023,40(03):40.[doi:10.19815/j.jace.2021.12004]
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备注/Memo

备注/Memo:

收稿日期:2021-11-15
基金项目:国家自然科学基金项目(51578077); 陕西省自然科学基础研究计划项目(2017JM5037)
作者简介:张剑瑞(1982-),女,陕西咸阳人,高级工程师,工学硕士,E-mail:zjr-snow@163.com。通信作者:马恺泽(1981-),男,内蒙古包头人,副教授,工学博士,E-mail:makaize@chd.edu.cn。

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更新日期/Last Update: 2022-12-20