Study on Cracking Load of Normal Section for Concrete Beams Strengthened with BFRP Sheet

Abstract:

Based on the calculation method of cracking load for reinforced concrete beam, the formula to calculate cracking load of normal section for concrete beams strengthened with BFRP sheet is established. The cracking load experiment of seven concrete beams strengthened with BFRP and three concrete beams strengthened with CFRP is conducted, and the results showed that fiber sheet layers and fiber sheet types have little effect on cracking load of concrete beams strengthened, the cracking load of beams strengthened mainly depends on the strength of concrete. The comparison between estimated values and test values of concrete beams strengthened indicates that the estimated values are slightly smaller, the formula can be used to calculate the cracking load of concrete beams strengthened.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 1343-1346
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.1343
• Online since: July 2014
• Authors: Xu Jun Chen, Xiao E Zhu, Zhong Yang
• Keywords: BFRP Sheet, Calculation Method, Cracking Load, Reinforced Concrete (RC) Beam

References

[1] Norris.T., Saadatmanesh, H. Shear and Flexural strengthening of RC beams with carbon fiber sheets. Joural of Structual Engineering, Vol. 123(7)(1997), p.903－911.

DOI: 10.1061/(asce)0733-9445(1997)123:7(903)

[2] Esfahani, M., Kianoush, M., and Tajari, A. Flexural behaviour of reinforced concrete beams strengthened by CFRP sheets. Engineering Structures, Vol. 29(2) (2007), pp.2428-2444.

DOI: 10.1016/j.engstruct.2006.12.008

[3] Design code for strengthening concrete structure (GB 50367-2006). (China Architecture &Building Press, 2006). (In Chinese).

[4] Xujun Chen, Yongxin Yang, Jianying Xing, Ling Hu, jiangen Wang. Experimental Study on Flexural Performance of RC Beam Strengthened with Basalt Fiber Sheet. Journal of Zhengzhou University (Engineering Science) , Vol. 6(4) (2009).

[5] Jianting Lin. Experimental Research of Reinforced Concrete Beams Strengthened with basalt fiber Polymer. Dalian University of Technology, 2009. (In Chinese).

[6] Jinping Ni. Research of Reinforced Concrete T-Beams Strengthened With BFRP. Chongqing University, 2009. (In Chinese).

[7] Zhenhai Guo, Xudong Shi: Reinforced concrete theory and analyse. (Tsinghua university press, China 2006). (In Chinese).