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Fatigue Life Prediction of RC Beams Strengthened with Prestressed CFRP under Cyclic Bending Loads

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Abstract

The application of prestressed carbon reinforced polymer (prestressed CFRP) in reinforced concrete (RC) members can improve the mechanical properties of strengthened structures and strengthening efficiency. This paper proposed a semi-empirical prediction formula of fatigue lives of the RC beams strengthened with prestressed CFRP under bending loads. The formula is established based on the fatigue life prediction method of RC beams and fatigue experimental data of non-prestressed CFRP reinforced beams done before. Fatigue effect coefficient of the formula was confirmed by the fatigue experiments of the RC beams strengthened with prestressed carbon fiber laminate (prestressed CFL) under cyclic bending loads. Fatigue lives of the strengthened beams predicted using the formula agreed well with the experimental data.

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Authors and Affiliations

  1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, China

    Peiyan Huang, Guangwan Liu, Xinyan Guo, Hao Zhou & Xiaohong Zheng

  2. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, 510640, China

    Peiyan Huang

Authors
  1. Peiyan Huang
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  2. Guangwan Liu
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  3. Xinyan Guo
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  4. Hao Zhou
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  5. Xiaohong Zheng
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Corresponding author

Correspondence to Peiyan Huang.

Additional information

Project supported by the National Natural Science Foundation of China (Nos. 11132004 and 51078145) and the Guangdong Province Natural Science Foundation of China (No. 9251064101000016).

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Huang, P., Liu, G., Guo, X. et al. Fatigue Life Prediction of RC Beams Strengthened with Prestressed CFRP under Cyclic Bending Loads. Acta Mech. Solida Sin. 26, 46–52 (2013). https://doi.org/10.1016/S0894-9166(13)60005-1

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  • DOI: https://doi.org/10.1016/S0894-9166(13)60005-1

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