NUMERICAL AND THEORETICAL ANALYSIS OF FLEXURAL BEHAVIOR OF HYBRID FRP-STEEL REINFORCED CONCRETE BEAMS

Abstract

Abstract: Recently, the reinforced concrete structure with a hybrid combination of FRP and steel bars has already become a hot topic of research in civil engineering community. In this paper, a 3D finite element model of the hybrid FRP/steel reinforced concrete beams was set up using the software ANSYS based on the test data. The whole bending process of the hybrid FRP/steel reinforced concrete beams was analyzed. Then the concept of a nominal reinforcement area of the hybrid FRP/steel reinforced concrete beams was proposed and used to set up a theoretical model combining with the technical code for infrastructure application of FRP composites. The load capacity and deflection of the hybrid FRP/steel reinforced concrete beams were estimated by using the theoretical model. The comparisons between numerical/analytical results and experimental date demonstrate the reliability of both the proposed FE model and the theoretical model.

Key words: FRP bars, hybrid reinforcement, concrete beam, flexural behavior, finite element analysis, theoretical analysis

CLC Number:

TB332

KONG Xiang-qing, YU Yang, GAO Hua-dong, LIU Hua-xin. NUMERICAL AND THEORETICAL ANALYSIS OF FLEXURAL BEHAVIOR OF HYBRID FRP-STEEL REINFORCED CONCRETE BEAMS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(1): 38-44.

References

[1] 贡金鑫, 赵国藩. 钢筋混凝土耐久性研究的进展[J]. 工业建筑, 2000, 30(5): 1-5.
[2] 金伟良, 赵羽习. 混凝土结构耐久性研究的回顾与展望[J]. 浙江大学学报, 2002, 36(4): 371-380.
[3] 叶列平, 冯鹏. FRP在工程结构中的应用与发展[J]. 土木工程学报, 2006, 39(3): 24-36.
[4] 吕志涛. 高性能材料FRP应用与结构工程创新 [J]. 建筑科学与工程学报, 2005, 22(1): 1-5.
[5] 梅葵花, 吕志涛, 张继文, 等. 碳纤维复合材料索斜拉桥的设计与测试[J]. 长安大学学报:自然科学版, 2007, 27(6): 48-52.
[6] 鲍成成. BFRP筋再生混凝土梁抗弯性能研究[D]. 锦州: 辽宁工业大学, 2017.
[7] 李炳宏, 江世永. 基于挠度控制方法的BFRP筋混凝土梁抗弯设计[J]. 长安大学学报: 自然科学版, 2010, 30(6): 61-67.
[8] 张晓亮, 屈文俊. 无腹筋GFRP筋混凝土梁抗剪性能试验[J]. 中国公路学报, 2010, 23(5): 51-57.
[9] 葛文杰, 张继文, 戴航, 等. FRP筋和钢筋混合配筋增强混凝土梁受弯性能[J]. 东南大学学报(自然科学版), 2012, 42(1): 115-119.
[10] Tan K H. Behaviour of hybrid FRP-steel reinforced concrete beams[C]//Proceeding of the Third International Symposium on Non-metallic (FRP) Reinforcement for Concrete Structures (FRPRCS-3), V.2, Japan Concrete Institute, Japan: 1997: 487-494.
[11] Aiello M A, Ombers L. Structural performances of concrete beams with hybrid (fiber-reinforced polymer-steel) reinforcements[J]. Journal of Composites for Construction, 2002, 6(2): 133-140.
[12] 陈辉. GFRP筋与钢筋混合配筋混凝土受弯构件的试验研究与理论分析[D]. 成都: 西南交通大学, 2007.
[13] Refai A E, Abed F, Al-Rahmani A. Structural performance and serviceability of concrete beams reinforced with hybrid (GFRP and steel) bars[J]. Construction and Building Materials, 2015, (96): 518-529.
[14] 葛文杰. FRP筋和钢筋混合配筋及其复合筋增强混凝土受弯构件的试验研究[D]. 南京:东南大学, 2009.
[15] Guide for design and construction of concrete structures reinforced with fiber rein-forced polymer bars: CNR DT 203/2006[S]. Rome, Italy: Italian National Research Council, 2006.
[16] Design and construction of building component with fiber-reinforced polymers: CSA Standard S806-02[S]. Rexdale, Toronto: Canadian Standard Association (CSA), 2002.
[17] Guide for the design and construction of structural concrete reinforced with FRP bars: ACI 440.1R-06, ACI Committee 440[S]. Farmington Hills, Mich: American Concrete Institute (ACI), 2006.
[18] 纤维增强复合材料建设工程应用技术规范: GB 50608—2010)[S]. 北京:中国建筑工业出版社, 2011.
[19] 王新敏, 李义强, 许宏伟. ANSYS结构分析单元与应用[M]. 北京:人民交通出版社, 2011(28): 88-92.
[20] 蒲泊舟. 大跨径混合梁斜拉桥钢混结合段受力性能分析[D]. 重庆:重庆大学,2015.