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Peeling-Off Phenomenon in FRP Strengthened Concrete Beams due to Thermal Residual Stress

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Abstract

Peeling-off phenomena in FRP strengthened concrete beams are investigated in this paper. Based on the beam theory and the fracture mechanics, a new theoretical model is proposed to analyze the peeling-off behavior near FRP-concrete interfaces, which is governed by residual thermal stresses. Numerical examples are presented to provide a clear insight into the failure mechanism. Some suggestions are provided for the optimal design of FRP strengthened structures.

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Authors and Affiliations

  1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, 100084, China

    Qianjun Xu

  2. Hydraulic and Civil Engineering College, Xinjiang Agriculture University, Urumqi, 830052, China

    Qianjun Xu

  3. Beijing Institute of Architectural Design, Beijing, 100045, China

    Shichang Duan

Authors
  1. Qianjun Xu
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  2. Shichang Duan
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Correspondence to Qianjun Xu.

Additional information

Project supported by the National Basic Research Program of China (No.2007CB714102) and the National Natural Science Foundation of China (No.50979048).

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Xu, Q., Duan, S. Peeling-Off Phenomenon in FRP Strengthened Concrete Beams due to Thermal Residual Stress. Acta Mech. Solida Sin. 22, 418–425 (2009). https://doi.org/10.1016/S0894-9166(09)60292-5

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  • DOI: https://doi.org/10.1016/S0894-9166(09)60292-5

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