Axial compressive performance and design model of fiber wound GFRP tube confined concrete

被引：0
|
作者：
Ye, Hanhui [1 ]
Xu, Shengliang [2 ]
Mao, Ming [3 ]
Bu, Zhanyu [1 ]
机构：
[1] School of Civil and Environmental Engineering and Geography Science, Ningbo University, Ningbo
[2] Ningbo Municipal Engineering Construction Group CO., LTD., Ningbo
[3] Ningbo Jiangong Jianle Engineering CO., LTD., Ningbo
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2024年 / 41卷 / 08期
基金：
中国国家自然科学基金;
关键词：
axial compressive performance; confine pattern; confined concrete; design model; fiber angle; GFRP tube;
D O I：
10.13801/j.cnki.fhclxb.20240008.005
中图分类号：
学科分类号：
摘要：
54 fiber-wound glass fiber reinforced polymer (GFRP) tube confined concrete cylindrical specimens classified in eighteen groups were designed and manufactured, and the parameters included the number of fiber layers (6, 10), fiber angle (±45◦ , ±60◦ , ±80◦ ), slenderness ratio (2, 4) and compression section (full section, core concrete). Based on the axial compression test results, a design-oriented peak stress prediction model in terms of fiber angle was proposed. The results show that GFRP tube can effectively improve the strength and ductility of confined specimens. The peak strength of the specimen increases with the increase of fiber angle and layer number, and the increase of the peak strength of the specimen with large slenderness ratio is larger. The full section compression will adversely affect the circumferential properties of the confined specimen. The confined pattern is mainly determined by the fiber angle. The specimens with ±60° and ±80° angles are strong confinement, and reveal brittle failure mode. The specimens with ±45° angle are weak confinement, and reveal ductile failure mode. By studying the mathematical relationship between the peak strength and the effective confinement strength, the simplified design-oriented model was derived, which has sufficient precision for solving the peak strength of specimens with different fiber angles, and can provide reference for relevant engineering applications. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
引用
收藏
页码：4246 / 4258
页数：12
相关论文
共 38 条
  • [1] HARRIES K A, KHAREL G., Experimental investigation of the behavior of variably confined concrete, Cement and Concrete Research, 33, 6, pp. 873-880, (2003)
  • [2] LAM L, TENG J G., Ultimate condition of fiber reinforced polymer-confined concrete, Journal of Composites for Construction, 8, 6, pp. 539-548, (2004)
  • [3] AU C, BUYUKOZTURK O., Effect of fiber orientation and ply mix on fiber reinforced polymer-confined concrete, Journal of Composites for Construction, 9, 5, pp. 397-407, (2005)
  • [4] CHAALLAL O, HASSAN M, LEBLANC M., Circular columns confined with FRP: Experimental versus predictions of models and guidelines, Journal of Composites for Construction, 10, 1, pp. 4-12, (2006)
  • [5] LI G Q, MARICHERLA D, SINGH K, Et al., Effect of fiber orientation on the structural behavior of FRP wrapped concrete cylinders, Composite Structures, 74, 4, pp. 475-483, (2006)
  • [6] EID R, ROY N, PAULTRE P., Normal- and high-strength concrete circular elements wrapped with FRP composites, Journal of Composites for Construction, 13, 2, pp. 113-124, (2009)
  • [7] ISSA C A, CHAMI P, SAAD G., Compressive strength of concrete cylinders with variable widths CFRP wraps: Experimental study and numerical modeling, Construction and Building Materials, 23, 6, pp. 2306-2318, (2009)
  • [8] LAM L, TENG J G., Design-oriented stress-strain model for FRP-confined concrete, Construction and Building Materials, 17, 6-7, pp. 471-489, (2003)
  • [9] SAAFI M, TOUTANJI H A, LI Z J., Behavior of concrete columns confined with fiber reinforced polymer tubes, ACI Materials Journal, 96, 4, pp. 500-509, (1999)
  • [10] KARBHARI V M, GAO Y Q., Composite jacketed concrete under uniaxial compression-Verification of simple design equations, Journal of Materials in Civil Engineering, 9, 4, pp. 185-193, (1997)
1234