表层嵌贴CFRP 板加固RC 梁的抗弯性能

doi:10.3969/j.issn.1007-2861.2015.02.002

Journal of Shanghai University（Natural Science Edition） ›› 2017, Vol. 23 ›› Issue (2): 298-307.doi: 10.3969/j.issn.1007-2861.2015.02.002

Previous Articles Next Articles

Flexural behavior of RC beams strengthened with near surface mounted CFRP strips

ZHANG Zhimei, ZHANG Zhenbo, HUANG Haitao, ZHANG Zhenkai, XIONG Hao

Department of Civil Engineering, Shanghai University, Shanghai 200444, China

Received:2015-04-03 Online:2017-04-30 Published:2017-04-30

Abstract

Abstract:

This paper uses the finite element software ABAQUS for nonlinear finite element analysis of the flexural behavior of reinforced concrete (RC) beams with near-surface mounted (NSM) carbon fiber reinforced polymer/plastic (CFRP) strips. Through simulation of 5 beams with NSM CFRP strips from the test, the experimental and theoretical results were compared to verify accuracy of the model. Using the verified finite element model, the influence of factors were analyzed such as FRP length, groove number, reinforcement method and longitudinal reinforcement ratio on the flexural behavior of RC beams. The results show that the CFRP length and longitudinal reinforcement ratio have a larger impact on the flexural behavior of the RC beams, while the impacts of groove number and reinforcement method are limited. This paper also proposes a boundary reinforcement quantity formula for CFRP strips.

Key words: carbon fiber reinforced polymer/plastic(CFRP) strip, finite element analysis, flexural behavior, near-surface mounted (NSM), reinforced concrete (RC) beam

ZHANG Zhimei, ZHANG Zhenbo, HUANG Haitao, ZHANG Zhenkai, XIONG Hao. Flexural behavior of RC beams strengthened with near surface mounted CFRP strips[J]. Journal of Shanghai University（Natural Science Edition）, 2017, 23(2): 298-307.

References

[1] 李荣, 滕锦光, 岳清瑞. FRP材料加固混凝土结构应用的新领域——嵌入式(NSM)加固法[J]. 工业建筑, 2004, 34(4): 5-10.
[2] 张智梅, 考书姣, 白世烨. CFRP布加固钢筋混凝土梁的抗弯性能研究[J]. 结构工程师, 2012, 28(4): 139-143.
[3] 孙志洋, 张智梅, 刘涛. 内嵌CFRP 板加固已损伤RC 梁抗弯性能的试验研究[J]. 四川建筑科学研究, 2013, 39(4): 112-116.
[4] 贺学军, 周朝阳, 徐玲. 内嵌CFRP 板条加固混凝土梁的抗弯性能试验研究[J]. 土木工程学报, 2008, 41(12): 14-20.
[5] 陆新征, 滕锦光, 叶列平, 等. FRP 加固混凝土梁受弯剥离破坏的有限元分析[J]. 工程力学, 2006, 23(6): 85-93.
[6] 周朝阳, 向传家, 贺学军. 内嵌FRP 加固钢筋混凝土梁的受弯承载力分析[J]. 建筑结构, 2006, 36(12): 19-21.
[7] 梁金福, 燕柳斌, 赵君君, 等. CFRP板条嵌入式加固钢筋混凝土梁抗弯性能试验研究[J]. 工业建筑, 2009, 39(2): 100-102.
[8] 曾宪桃, 成香莉, 高保彬. 内嵌碳纤维增强塑料板条抗弯加固混凝土梁试验研究[J]. 工程力学, 2008, 25(12): 106-113.
[9] De Lorenzis L. Anchorage length of near-surface mounted fiber-reinforced polymer rods for concrete strengthening analytical modeling [J]. ACI Structure Journal, 2004, 101(2): 375-386.
[10] Teng J G, Lorenzis L D, Wang B, et al. Debonding failures of RC beams strengthened with near-surface mounted CFRP strips [J]. Journal of Composites for Construction, 2006, 10(2): 92-105.
[11] De Lorenzis L, Teng J G. Near-surface mounted FRP reinforcement: an emerging technique for strengthening structures [J]. Composites Part B: Engineering, 2007, 38: 119-143.
[12] Novidis D, Pantazopoulou S J, Tentolouris E. Experimental study of bond of NSM-FRP reinforcement [J]. Construction and Building Materials, 2007, 21(8): 1760-1770.

Flexural behavior of RC beams strengthened with near surface mounted CFRP strips

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 3

Recommended Articles

Metrics

Comments

[1]	CHEN Yue, LI Kai, PENG Yuqing, LI Aijun, ZHANG Dongsheng. Structural design and mechanical analysis of C/C grids for ion thruster [J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(2): 235-244.
[2]	LU Shu-yi, LI Dong-mei, YANG Wei-guang, HUANG Lu, JIN Jing, WANG Chen, CHEN Yang, SHI Wei-min. Coplanar-grid electrode design of HgI₂ detector with finite element simulation and optimization [J]. Journal of Shanghai University（Natural Science Edition）, 2015, 21(5): 657-662.
[3]	LIN Zu-Wei-1, CHEN Fang-Quan-1, LIANG Guo-Wei-1, GUO Xu-Lin-2, YANG Tong-Gao-2. Analysis on Electric Field Effect of Special Welding of Nuclear Fuel Rod Based on ANSYS [J]. Journal of Shanghai University（Natural Science Edition）, 2010, 16(2): 147-151.