Investigation of FRP-Confined UHPC Circular Stub Columns Under Axial Compression

MA Kaize; HAN Xiao; HE Tengwei; BAI Jingzhu

doi:10.3969/j.issn.0258-2724.20220332

Volume 59 Issue 5

Oct. 2024

Turn off MathJax

Article Contents

Abstract

References

Journal of Southwest Jiaotong University > 2024 > 59(5): 1132-1139.

DU Yingjin, XI Chuanjie, HU Xiewen, WU Jianli, LIU Bo, HE Kun. Susceptibility Assessment of Collapses and Landslides Based on Cluster and Random Forest Coupled Model[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20220864

Citation:

MA Kaize, HAN Xiao, HE Tengwei, BAI Jingzhu. Investigation of FRP-Confined UHPC Circular Stub Columns Under Axial Compression[J]. Journal of Southwest Jiaotong University, 2024, 59(5): 1132-1139. doi: 10.3969/j.issn.0258-2724.20220332

Citation:

PDF( 2219 KB)

Investigation of FRP-Confined UHPC Circular Stub Columns Under Axial Compression

doi: 10.3969/j.issn.0258-2724.20220332

College of Architecture and Engineering, Chang’an University, Xi’an 710061, China

Received Date: 17 May 2022
Rev Recd Date: 26 Jul 2022

Available Online: 22 Nov 2023

Publish Date: 29 Aug 2022

Abstract

Abstract

In order to study the influences of the number of fiber reinforced polymer (FRP) layers, the type of FRP, and the volume of steel fiber on the axial compression performance of ultra-high performance concrete (UHPC) circular stub columns, 21 FRP-confined UHPC circular stub columns were tested under axial compression. The typical failure characteristics and stress mechanism of the specimens were analyzed. In addition, the influence of various parameters on the ultimate strength and ultimate strain of the specimens was studied. The experimental results show that the ultimate strength of UHPC circular stub columns can be improved by increasing the number of FRP layers. The ultimate strength of C12, C22, and C32 is 17.8%, 25.4%, and 23.4% higher than that of C11, C21, and C31, respectively. With the increase in the volume of steel fiber, the ultimate strength and ultimate strain, and the ductility of UHPC circular stub columns are improved. The ultimate strength and ultimate strain of C31 are increased by 2.9% and 15.1%, respectively, compared with C21, as well as 4.7% and 50%, respectively, compared with C11. Under the same FRP layers and volume of steel fiber, the improvement of the ultimate strength of confined UHPC circular stub columns by carbon fiber reinforced polymer (CFRP) is significantly better than that by glass fiber reinforced polymer (GFRP). The ultimate strength of C11, C12, and C13 is 9.7%, 7.8%, and 7.2% higher than that of G11, G12, and G13, respectively. In view of the constraint of the steel fiber, calculation models of compressive strength and ultimate strain of FRP-confined UHPC circular stub columns are proposed. Furthermore, the constitutive model of FRP-confined UHPC is given.
- ultra-high performance concrete,
- fiber reinforced polymer,
- circular stub column,
- axial compression,
- stress-strain curve

FullText(HTML)

References(22)

References

[1]	MONALDO E, NERILLI F, VAIRO G. Basalt-based fiber-reinforced materials and structural applications in civil engineering[J]. Composite Structures, 2019, 214: 246-263. doi: 10.1016/j.compstruct.2019.02.002
[2]	闫清峰,张纪刚. 纤维增强复合材料在土木工程中的应用与发展[J]. 科学技术与工程,2021,21(36): 15314-15322. doi: 10.3969/j.issn.1671-1815.2021.36.003 YAN Qingfeng, ZHANG Jigang. Applications and development of fiber reinforced polymer in civil engineering[J]. Science Technology and Engineering, 2021, 21(36): 15314-15322. doi: 10.3969/j.issn.1671-1815.2021.36.003
[3]	王晖. 超高性能混凝土(UHPC)研究综述[J]. 混凝土与水泥制品,2022(4): 25-28. WANG Hui. Review of research on ultra-high performance concrete[J]. China Concrete and Cement Products, 2022(4): 25-28.
[4]	张云升,张文华,陈振宇. 综论超高性能混凝土:设计制备·微观结构·力学与耐久性·工程应用[J]. 材料导报,2017,31(23): 1-16. doi: 10.11896/j.issn.1005-023X.2017.023.001 ZHANG Yunsheng, ZHANG Wenhua, CHEN Zhenyu. A complete review of ultra-high performance concrete: design and preparation, microstructure, mechanics and durability, engineering applications[J]. Materials Review, 2017, 31(23): 1-16. doi: 10.11896/j.issn.1005-023X.2017.023.001
[5]	梁旭宇,池寅,曾彦钦,等. GFRP管约束超高性能混凝土单轴受压应力-应变关系试验研究[J]. 武汉大学学报(工学版),2020,53(6): 498-506. LIANG Xuyu, CHI Yin, ZENG Yanqin, et al. Experimental studies on stress-strain relationship of ultra-high performance concrete confined by GFRP tube under uniaxial compression[J]. Engineering Journal of Wuhan University, 2020, 53(6): 498-506.
[6]	LAM L, HUANG L, XIE J H, et al. Compressive behavior of ultra-high performance concrete confined with FRP[J]. Composite Structures, 2021, 274: 114321.1-114321.15. doi: 10.1016/j.compstruct.2021.114321
[7]	GULER S. Axial behavior of FRP-wrapped circular ultra-high performance concrete specimens[J]. Structural Engineering and Mechanics, 2014, 50(6): 709-722. doi: 10.12989/sem.2014.50.6.709
[8]	WANG W Q, WU C Q, LIU Z X, et al. Compressive behavior of ultra-high performance fiber-reinforced concrete (UHPFRC) confined with FRP[J]. Composite Structures, 2018, 204: 419-437. doi: 10.1016/j.compstruct.2018.07.102
[9]	邓宗才,刘少新. FRP管约束超高性能混凝土的试验及理论研究[J]. 应用基础与工程科学学报,2016,24(4): 792-803. DENG Zongcai, LIU Shaoxin. Test and modeling of ultra-high performance concrete confined by fiber reinforced polymer tube[J]. Journal of Basic Science and Engineering, 2016, 24(4): 792-803.
[10]	邓宗才,王义超. FRP约束超高性能混凝土圆柱轴压本构模型[J]. 西南交通大学学报,2015,50(4): 641-647. doi: 10.3969/j.issn.0258-2724.2015.04.011 DENG Zongcai, WANG Yichao. Axial compression stress-strain model for UHPC cylinders confined by FRP[J]. Journal of Southwest Jiaotong University, 2015, 50(4): 641-647. doi: 10.3969/j.issn.0258-2724.2015.04.011
[11]	黄美珍. 基于细观力学方法的超高性能混凝土轴压本构模型研究[D]. 福州: 福州大学, 2019.
[12]	田会文,周臻,陆纪平,等. 纤维增强树脂复合材料约束超高性能混凝土轴压性能的细观数值模拟[J]. 复合材料学报,2020,37(7): 1629-1638. TIAN Huiwen, ZHOU Zhen, LU Jiping, et al. Meso-scale numerical simulation of axial compression performance of fiber reinforced polymer composite-confined ultra-high performance concrete[J]. Acta Materiae Compositae Sinica, 2020, 37(7): 1629-1638.
[13]	上海市建筑科学研究院有限公司. 超高性能混凝土试验方法标准: T/CECS864—2021[S]. 北京:中国建筑工业出版社, 2021.
[14]	中华人民共和国建设部. 普通混凝土拌合物性能试验方法标准: GB/T 50080—2016[S]. 北京: 中国建筑工业出版社, 2016.
[15]	曹玉贵,李龙龙,谯理格. FRP约束橡胶混凝土的轴心受压承载力分析[J]. 江苏大学学报(自然科学版),2021,42(5): 616-620. CAO Yugui, LI Longlong, QIAO Lige. Analysis of axial compressive bearing capacity of FRP confined rubber concrete[J]. Journal of Jiangsu University (Natural Science Edition), 2021, 42(5): 616-620.
[16]	李稳. FRP-混凝土界面破坏行为的断裂力学分析[D]. 广州: 华南理工大学, 2020.
[17]	TANG W S, LIU Z Z, LU Y Y, et al. Hybrid confinement mechanism of large-small rupture strain FRP on concrete cylinder[J]. Journal of Building Engineering, 2022, 51: 104335.1-104335.20.
[18]	HOSINIEH M M, AOUDE H, COOK W D, et al. Behavior of ultra-high performance fiber reinforced concrete columns under pure axial loading[J]. Engineering Structures, 2015, 99: 388-401. doi: 10.1016/j.engstruct.2015.05.009
[19]	ZOHREVAND P, MIRMIRAN A. Stress-strain model of ultrahigh performance concrete confined by fiber-reinforced polymers[J]. Journal of Materials in Civil Engineering, 2013, 25(12): 1822-1829. doi: 10.1061/(ASCE)MT.1943-5533.0000769
[20]	安凯旋,王旭月,刘中宪,等. 纤维布约束超高性能混凝土短柱轴压性能[J]. 建筑结构,2021,51(11): 129-135. AN Kaixuan, WANG Xuyue, LIU Zhongxian, et al. Study on axial compression performance research on UHPC short columns confined by fiber reinforced polymer[J]. Building Structure, 2021, 51(11): 129-135.
[21]	MANDER J B, PRIESTLEY M J N, PARK R. Theoretical stress-strain model for confined concrete[J]. Journal of Structural Engineering, 1988, 114(8): 1804-1826. doi: 10.1061/(ASCE)0733-9445(1988)114:8(1804)
[22]	LAM L, TENG J G. Design-oriented stress-strain model for FRP-confined concrete[J]. Construction and Building Materials, 2003, 17(6/7): 471-489.