Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (7): 6-10.

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M echanical Analysis of RC Beams Strengthened by Prestressed FRPs

Guo Xin-yan  Huang Pei-yan  Zheng Xiao-hong   

  1. College of Traffic and Communications,South China Univ.of Tech.,Guangzhou 5 10640,Guangdong,China
  • Received:2004-10-20 Online:2005-07-25 Published:2005-07-25
  • Contact: 郭馨艳(1971-)，女，讲师，博士生，主要从事疲劳与断裂力学的研究 E-mail:xinyanguo@163.com
  • About author:郭馨艳(1971-)，女，讲师，博士生，主要从事疲劳与断裂力学的研究
  • Supported by:

    国家自然科学基金资助项目(10272047)；广东省自然科学基金资助项目(020856)

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Abstract:

Bonding prestressed FRPs(Fiber-Reinforced Plates)to strengthen and repair civil engineering structures improves the working eficiency and the force conditions of structures.In this paper,formulae of the virtual pre-stress,the prestress lose and the perm issible prestress on the RC beam strengthened by prestressed FRPs are de-duced based on theoretical analyses.Moreover,the virtual prestress,prestress lose and perm issible prestress of two kinds of prestressed FRP-strengthened RC beams are calculated.The results show that the calculated values of vir-tual prestress are consistent with the experimental results,while the calculated values of prestress lose are slightly less than the experimental results.

Key words: fiber·reinforced plate, virtual prestress, prestress lose, perm issible prestress