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Title |
Evaluation on Structural Performance of Precast Bridge Deck Joint using HSFRC
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Authors |
이한주(Han-Joo Lee) ; 정철헌(Chul-Hun Chung) ; 신동호(Dong-Ho Shin) ; 박세진(Se-Jin Park) ; 김인규(In-Gyu Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.6.196 |
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Keywords |
프리캐스트 바닥판 ; 고강도 강섬유보강콘크리트(HSFRC) ; 요철형 이음단면 ; 철근 겹침이음길이 Precast concrete deck system ; High Strength Fiber Reinforced Concrete(HSFRC) ; Ribbed connection details ; Lap splice length |
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Abstract |
In precast deck system, structural performance and serviceability are mostly determined by the connection methods between the precast decks. This study proposes precast deck system with asymmetric ribbed connection details using High Strength Fiber Reinforced Concrete(HSFRC) with filler. To verify the proposed method, the flexural performance experiment was carried out with variation of joint cross section type and splice rebar details. From the test results, regardless of joint details, spliced tensile rebars of specimens were deformed to yielding strain level. Also, all types of specimens resulted in sufficient flexural performance. These test results show that the minimum lap splice length specified in current Korea Highway Bridge Design Code is conservative for precast deck joint using HSFRC. Therefore, splice details can be simplified and joint width can be reduced by using HSFRC with filler between the precast decks, and the proposed precast deck systems can be applied to the connection part of precast decks effectively.
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