内置碳纤维增强复材管的双管海水海沙混凝土柱轴压性能

缪坤廷; 魏洋; 王高飞; 董峰辉; 郑开启

doi:10.13204/j.gyjzG22030410

内置碳纤维增强复材管的双管海水海沙混凝土柱轴压性能

doi: 10.13204/j.gyjzG22030410

南京林业大学土木工程学院, 南京 210037

基金项目:

国家自然科学基金项目(51778300)

江苏省重点研发计划项目(BE2020703)

江苏省高校“青蓝工程”项目(2020)

江苏省自然科学基金项目(BK20151520、BK20191390)

江苏省研究生科研与实践创新计划项目(KYCX21_0880)

江苏省六大人才高峰项目(JZ-017)

详细信息

作者简介:
缪坤廷,男,1997年出生,硕士研究生

通讯作者:
魏洋,男,1978年出生,博士,教授,wy78@njfu.edu.cn。

计量
- 文章访问数: 353
- HTML全文浏览量: 22
- PDF下载量: 19
- 被引次数: 0
出版历程
- 收稿日期: 2022-03-04
- 网络出版日期: 2023-02-06

Mechanical Properties of Double-Tube Seawater and Sea Sand Concrete Columns with Built-in CFRP Tubes Under Axial Compression

College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China

摘要

摘要: 为了解决海水海沙混凝土在实际工程中的腐蚀问题,增强结构的抗震性能,提出了一种内置碳纤维增强复材(CFRP)管的双管海水海沙混凝土柱的新型结构,对12个内置CFRP管的双管海水海沙混凝土柱和4个普通钢管混凝土柱进行了轴向压缩试验,研究了钢管厚度和CFRP管层数对于其轴压性能的影响。试验结果表明,内部的CFRP管可以有效提高结构的承载力和延性,增强结构的抗压性能和变形能力。内置CFRP管的双管海水海沙混凝土柱的破坏往往伴随着其中1根CFRP管破坏,其余的CFRP管仍然可以提供约束,并在加载过程中依次破坏。基于面积等效和区域分割的理念,提出了内置CFRP管的双管海水海沙混凝土柱的轴压承载力计算式,并对预测精度和离散度进行了评估。
- 内置CFRP管 /
- 海水海沙混凝土 /
- 钢管 /
- 轴压性能 /
- 计算模型
Abstract: In order to solve the corrosion problems caused by seawater and sea sand concrete in the engineering practice and enhance the seismic performance of structure, a novel structure called double-tube seawater and sea sand concrete columns with built-in CFRP tubes was proposed. Axial compression test was performed on 12 double-tube seawater and sea sand concrete columns with built-in CFRP tubes and 4 concrete-filled steel tube columns. The effect of the thickness of steel tube and the layers of CFRP tube was investigated. Test results indicated that the built-in CFRP tube could improve the bearing capacity and deformation capacity of the structure. The failure of double-tube seawater and sea sand concrete columns with built-in CFRP tubes was usually accompanied by the failure of one of built-in CFRP tubes, while the rest of CFRP tubes could still provide confinement and broke in turn during loading. Based on the theory of area equivalence and area segmentation, a model for ultimate load of double-tube seawater and sea sand concrete columns with built-in CFRP tubes was proposed. Finally, the prediction accuracy and dispersion of the formula were evaluated.
- built-in CFRP tube /
- seawater and sea sand concrete /
- steel tube /
- mechanical properties under axial compression /
- calculation model

HTML全文

参考文献(27)

[1]	秦斌.海水海沙混凝土基本力学性能研究[J].混凝土, 2019(2):90-91.
[2]	DHONDY T, REMENNIKO V A, SHIEKH M N.Benefits of using sea sand and seawater in concrete:a comprehensive review[J].Australian Journal of Structural Engineering, 2019, 16(2):2204-2261.
[3]	GUO M H, HU B, XING F, et al.Characterization of the mechanical properties of eco-friendly concrete made with untreated sea sand and seawater based on statistical analysis[J].Construction and Building Materials, 2020, 234(20).DOI: 10.1016/j.conbuildmat.2019.117339.
[4]	ZHAO Y F, HU X, SHI C J, et al.A review on seawater sea-sand concrete:mixture proportion, hydration, microstructure and properties[J].Construction and Building Materials, 2021, 295(9).DOI: 10.1016/j.conbuildmat.2021.123602.
[5]	冯鹏, 王杰, 张枭, 等.FRP与海沙混凝土组合应用的发展与创新[J].玻璃钢/复合材料, 2014(12):13-18.
[6]	ZENG J J, DUAN Z J, GAO W Y, et al.Compressive behavior of FRP-wrapped seawater sea-sand concrete with a square cross-section[J].Construction and Building Materials, 2020, 262(30).DOI: 10.1016/j.conbuildmat.2020.120881.
[7]	SUN J Z, DING Z H, LI X L, et al.Bond behavior between BFRP bar and basalt fiber reinforced seawater sea-sand recycled aggregate concrete[J] Construction and Building Materials, 2021, 285(24).DOI: 10.1016/j.conbuildmat.2021.122951.
[8]	LI P D, YANG T Q, ZENG Q, et al.Axial stress-strain behavior of carbon FRP-confined seawater sea-sand recycled aggregate concrete square columns with different corner radii[J].Composite Structures, 2021, 262(15).DOI: 10.1016/j.compstruct.2021.113589.
[9]	柏佳文, 魏洋, 张依睿, 等.新型碳纤维增强复合材料-钢复合管海水海沙混凝土圆柱轴压试验[J].复合材料学报, 2021, 38(9):1-11.
[10]	DING F X, LU D R, BAI Y, et al.Behaviour of CFRP-confined concrete-filled circular steel tube stub columns under axial loading[J].Thin-Walled Structure, 2018, 125(5):107-118.
[11]	魏洋, 李国芬, 端茂军.矩形FRP-钢复合管混凝土短柱的轴压试验研究[J].玻璃钢/复合材料, 2014(12):47-51.
[12]	CHOI K K, XIAO Y.Analytical model of circular CFRP confined concrete-filled steel tubular columns under axial compression[J].Journal of Composites for Construction, 2010, 14(1):125-133.
[13]	WEI Y, BAI J W, ZHANG Y R, et al.Compressive performance of high-strength seawater and sea sand concrete filled circular FRP-steel composite tube columns[J].Engineering Structures, 2021, 240(8).DOI: 10.1016/j.engstruct.2021.112357.
[14]	ZHANG Y R, WEI Y, BAI J W, et al.A novel seawater and sea sand concretefilled FRP-carbon steel composite tube column:concept and behavior[J].Composite Structures, 2020, 246(8).DOI: 10.1016/j.compstruct.2020.112421.
[15]	潘雷.钢管内置FRP约束高强混凝土组合短柱轴压性能的试验研究[D].广州:广东工业大学, 2014.
[16]	WEI Y, WU G, LI G F.Performance of circular concrete-filled fiber-reinforced polymer-steel composite tube columns under axial compression[J].Journal of Reinforced Plastics and Composites, 2014, 33(20):1911-1928.
[17]	TENG J G, YU T, WONG Y L.Hybrid FRP-concrete-steel tubular columns:concept and behavior[J].Construction and Building Materials, 2007, 21(4):846-854.
[18]	李帼昌, 麻丽, 杨景利, 等.内置CFRP圆管的方钢管高强混凝土轴压短柱承载力计算初探[J].沈阳建筑大学学报(自然科学版), 2008, 24(1):62-66.
[19]	陶毅, 张海镇, 史庆轩, 等.内置FRP约束混凝土的方钢管混凝土轴压承载力[J].土木建筑与环境工程, 2017, 39(2):43-49.
[20]	陈程绩.内置高强芯柱的钢管混凝土组合柱力学性能研究[D].西安:西安建筑科技大学, 2019.
[21]	LONG Y L, LI W T, DAI J G, et al.Experimental study of concrete-filled CHS stub columns with inner FRP tubes[J].Thin-Walled Structures, 2018, 122(1):606-621.
[22]	HASSANEIN M F, KHAROOB O F, LIANG Q Q.Circular concrete-filled double skin tubular short columns with external stainless steel tubes under axial compression[J].Thin-Walled Structures, 2013, 73(4):252-263.
[23]	WANG W Q, SHEIKH N M, MUHAMMAD N S H, et al.Behaviour of concrete-encased concrete-filled FRP tube (CCFT) columns under axial compression[J].Engineering Structures, 2017, 147(15):256-268.
[24]	YU T, ZHANG S S, HUANG L, et al.Compressive behaviour of hybrid double-skin tubular columns with a large rupture strain FRP tube[J].Composite Structures, 2017, 171(1):10-18.
[25]	TIAN H W, ZHOU Z, WEI Y, et al.Experimental investigation on axial compressive behavior of ultra-high performance concrete (UHPC) filled glass FRP tubes[J].Construction and Building Materials, 2019, 225(20):678-691.
[26]	YU T, CHAN C W, TEH L, et al.Hybrid FRP-concrete-steel multitube concrete columns:concept and behavior[J].Journal of Composites for Construction, 2017, 21(6).DOI: 10.1061/(ASCE)CC.1943-5614.0000826.
[27]	查晓雄, 徐海俭.内配异心及多层钢管混凝土柱承载力统一公式研究[J].建筑结构学报, 2015, 36(增刊1):192-198.