Effect of length of carbon fiber sheet on the stress field of the reinforced concrete three-point bending specimen with a V notch

Peiyan Huang; Ming Jin; Lifeng Luo; Shengmin Hu; Guisen Zhang

doi:10.1117/12.468796

29 May 2002 Effect of length of carbon fiber sheet on the stress field of the reinforced concrete three-point bending specimen with a V notch

Peiyan Huang, Ming Jin, Lifeng Luo, Shengmin Hu, Guisen Zhang

Author Affiliations +

Proceedings Volume 4537, Third International Conference on Experimental Mechanics; (2002) https://doi.org/10.1117/12.468796
Event: Third International Conference on Experimental Mechanics, 2002, Beijing, China

Abstract

Affixing high strength fiber-sheet is an advanced method to reinforce or repair the concrete structures. In this paper, the theoretical analysis and FEM are used to discuss the effects of carbon fiber-sheet (CFS) on the stress field of the reinforced concrete 3-point bending specimens with V-notch. The results show that affixing CFS to the bottom of the specimen can change the stress distribution and failure mode of the specimen. The failure mode of CFS reinforced concrete specimen is determined by the location and size of the 'over-stress area' on the concrete side of the interface between concrete member and CFS. Moreover, the location and size of the 'over-stress area' is affected greatly by the length, L, of the CFS. Therefore, to improve the load- carrying capacity of the specimen, the 'over-stress area' on the concrete side of the interface should be within the affixing length of CFS. The length of the CFS should satisfy the requirement: L/S >= 3/4.

Citation Download Citation

Peiyan Huang, Ming Jin, Lifeng Luo, Shengmin Hu, and Guisen Zhang "Effect of length of carbon fiber sheet on the stress field of the reinforced concrete three-point bending specimen with a V notch", Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); https://doi.org/10.1117/12.468796

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