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Title |
Structural Analysis and Safety Assessment for Constricted Bridges
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Authors |
정재훈(Jae-Hun Jeong) ; 김문옥(Moon-Ok Kim) ; 최현호(Hyun-Ho Choi) ; 김장환(Jang-Hwan Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.6.33 |
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Keywords |
협착; 협착교량; 측방유동; 알칼리 골재반응; 교량 구조해석 Joint closure; Constricted bridge; Lateral flow; Alkali-aggregate reaction; Bridge analysis |
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Abstract |
As the intense heat continues, many cases of highway pavement blow up and bridge expansion joints damages have been inspected. Especially,Expansion joint closure of bridges is an important problem that can threat the safety of the bridge structure or reduce long-term durability. This paperproposed a structural analysis method for bridges having expansion joint closure and structural analysis was performed to verify the effects accordingto bridge types. Analysis bridges were divided into four types: concrete and steel bridges, shallow and piled foundations. To induce the situation ofabutments and bridge decks are jammed, the following loads were additionally considered; lateral flow pressure, pavement expansion by alkali-aggregatereaction, creep settlement of backfill. The structural analysis method was verified by comparing the structural analysis results with the actually measuredjoint gap data. In addition, behavioral analysis due to joint closure was conducted to confirm the change in safety ratio by type of superstructure asthe axial force increased.
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