Numerical Analysis of RC Beams Strengthened with Pre-Stressed CFRP Sheets

Abstract:

Through the finite element analysis software, fourteen strengthened beams are calculated in the condition of considering bonding-slip or not respectively. Comparing simulation results with test and theoretical calculation, We can draw the following conclusions: Testing reinforced concrete beams when there is no debonding, ANSYS simulation, theoretical calculations and experimental results agree well. Testing reinforced concrete beams when there is debonding. By considering the bond-slip calculation model calculation accuracy is higher. .Numerical results show that, prestressed CFRP with relative of prestressed girder of carbon fibre reinforced beam can significantly improve the cracking beam loading, and effectively improve the yield loads, but the ultimate load.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 3101-3105
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.3101
• Online since: May 2011
• Authors: Yong Xin Yang, Wei Zhang, Zeng Wei Guan, Wei Xie
• Keywords: Carbon Fiber Reinforced Polymer/Plastic (CFRP), Finite Element Model (FEM), Numerical Simulation, Pre-Stress

References

[1] Qingrui Yue.Fiber reinforced polymer materials and foundation establishment of society[J]. The Chinese journal of nonferrous metals,2004(5).

[2] Qingwei Li. Experimental research on prestress loss and anchorage methods in technique of concrete structure strengthened with perstressed CFRP sheets[D]. Beijing: Central Research Institute of Building and Construction of MCC Group,2005:17-56.

[3] Xinzheng Lu, Lieping Ye, Jinguang Teng. Bond-slip model for FRP-to-concrete interface[J]. Journal of Building Structures,2005(8),26,4:10-18.

[4] Building Science Research of china.GB 50010-2002 Code for design of concrete structures [S].Beijing:china architecture and building press,2002.

[5] Wei Fei,Shiyong Jiang,Feifei Peng etc. Experimental study on flexural strength of RC beams strengthened with prestressed CFRP sheets [J]. Building Science Research of Sichuan,2003,Vol.29,No.2:56-60.

[6] Qin Kong. A study on bending properties of RC beams strengthened with prestressed carbon fiber sheet [D]. Zhengzhou: Zhengzhou university,2005:31-39.

[7] Kai Ge. The Experimental Study on the Flexural Behavior of Beams Strengthened with Prestressed Carbon Fiber Reinforced Polymer Sheets [D]. Beijing: The railway science research institute,2006:14-42.

[8] Wei Zhang,Yongxin Yang,Zengwei Guan. Calculation of Flexural Bearing Capacity of Reinforced Concrete Beams Strengthened by Using Prestressed CFRP Sheets [J]. Industrial Construction,2009 Supplement,Vol.39:10-18.