Structural performance and serviceability of concrete beams reinforced with hybrid (GFRP and steel) bars

被引：148

作者：

El Refai, Ahmed ^{[1
]}

Abed, Farid ^{[2
]}

Al-Rahmani, Abdullah ^{[2
]}

机构：

[1] Univ Laval, Dept Civil & Water Engn, Quebec City, PQ G1V 0A6, Canada

[2] Amer Univ Sharjah, Dept Civil Engn, Sharjah, U Arab Emirates

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 96卷

关键词：

Composite materials; Concrete beams; Cracking; Deformation; Ductility; Fiber reinforced polymer; Glass fiber; Hybrid methods; Reinforced concrete; Serviceability; EFFECTIVE MOMENT; INERTIA;

D O I：

10.1016/j.conbuildmat.2015.08.063

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper reports on the structural performance of concrete beams reinforced with hybrid reinforcement. Six concrete beams reinforced with a combination of steel and glass fiber-reinforced polymer (GFRP) bars and three other beams reinforced with only GFRP bars were tested in flexure. Over-reinforced hybrid beams showed higher strength and ductility than their GFRP-reinforced counterparts. The CSA-S806-12 equation accurately predicted the deflections of the hybrid-reinforced beams with high effective reinforcement ratios. Based on the test results, a bond coefficient was proposed to predict the crack width of the hybrid-reinforced beams using the ACI-440.1R-06 equation. A modified deformability factor was also utilized to assess the deformability of the hybrid-reinforced beams. Comparison between the experimental and predicted results showed the adequacy of the models used in predicting the load-carrying capacity, deflection, crack widths, and deformability of hybrid-reinforced concrete beams. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：518 / 529

页数：12

共 18 条

[11]

Branson D.E., 1968, ACI J P, V65, P730

[12]

CSA (Canadian Standards Association), 2010, CSAS610

[13] Experimental study of hybrid FRP reinforced concrete beams [J].

Lau, Denvid ;

Pam, Hoat Joen .

ENGINEERING STRUCTURES, 2010, 32 (12) :3857-3865

[14]

Leung H.Y., 2003, J STRUCTURAL SURVEY, V21, P146, DOI [10.1108/02630800310507159, DOI 10.1108/02630800310507159]

[15] Flexural Behavior of Concrete Beams Reinforced with Hybrid (GFRP and Steel) Bars [J].

Qu, Wenjun ;

Zhang, Xiaoliang ;

Huang, Haiqun .

JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2009, 13 (05) :350-359

[16]

Safan MA, 2013, ACI MATER J, V110, P677

[17] Flexural strengthening of reinforced lightweight polystyrene aggregate concrete beams with near-surface mounted GFRP bars [J].

Tang, W. C. ;

Balendran, R. V. ;

Nadeem, A. ;

Leung, H. Y. .

BUILDING AND ENVIRONMENT, 2006, 41 (10) :1381-1393

[18]

Yost JR, 2003, ACI STRUCT J, V100, P732

← 1 2 →