A Design Method of Fiber Reinforced Plastic Methods as a Countermeasure for Concrete Spalling From Tunnel Lining

Kojima, Yoshiyuki; Yoshikawa, Kazuyuki; Muguruma, Takashi; Kobayashi, Akiko; Wakana, Kazuyuki; 茂, 松岡; Asakura, Toshihiro; Wu, Zhishen

doi:10.2208/jscej.2004.756_101

Cited by 3 publications

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Interface bond between FRP sheets and concrete substrates: properties, numerical modeling and roles in member behaviour

Ueda¹,

Dai²

2004

Progress Structural Eng Maths

120

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SUMMARYThe success of most of strengthening or retrofitting technologies for concrete structures by using external bonded FRP sheets highly depends on the interface bond between FRP sheets and concrete substrates. This paper reviews current studies on evaluating the bond properties of FRP sheet-concrete interfaces, and in particular, focuses on several newly developed bond models for describing the bond characteristics of FRP sheet-concrete interfaces under various loading conditions. This paper also gives several examples that apply those interfacial bond models to the design of different retrofitting cases. Analytical solutions are discussed that consider the local interfacial delamination and slip behaviour, which can improve the prediction of strength and deformation performances, as well as clarify the failure mechanisms of concrete members upgraded with FRP composites. Moreover, the improvement in structural performances of retrofitted concrete members is discussed by relating them to the optimum microscopic properties of the interface bond and the properties of retrofitting materials.

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