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Governing Design Factors of GFRP-Reinforced Concrete Bridge Deck
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 Title & Authors
Governing Design Factors of GFRP-Reinforced Concrete Bridge Deck
Cho, Jeong-Rae; Park, Young Hwan; Park, Sung Yong; Cho, Kunhee; Kim, Sung Tae;
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 Abstract
In this study, the governing design factors of GFRP-reinforced concrete bridge deck are analyzed for typical bridges in Korea. The adopted bridge deck is a cast-in-situ concrete bridge deck for the prestressed concrete girder bridge with dimensions of 240 mm thickness and 2.75 m span length from center-to-center of supporting girders. The selected design variables are the diameters of GFRP rebar, spacings of GFRP rebars and concrete cover thicknesses, Considering the absence of the specification relating GFRP rebar in Korea, AASHTO specification is used to design the GFRP-reinforced concrete bridge deck. The GFRP-reinforced concrete bridge deck is proved to be governed by the criteria about serviceability, especially maximum crack width, while steel reinforced concrete bridge deck is governed by the criteria on ultimate limit state. In addition, GFRP rebars with diameter of 16 mm ~ 19 mm should be used for the main transverse direction of decks to assure appropriate rebar spacings.
 Keywords
FRP;GFRP rebar;GFRP-reinforced concrete bridge deck;governing design factors;
 Language
Korean
 Cited by
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