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Title |
Prestressing Inducing Effect of Continuous Open-top Steel Box Girder Using Modular CFT Members
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Authors |
이학준(Hak Joon Lee) ; 김련학(Ryeon-Hak Kim) ; 조광일(Kwang-Il Cho) ; 안진희(Jin-Hee Ahn) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.3.111 |
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Keywords |
연속 강박스 거더; 콘크리트 충전 강관; 프리스트레스; 연속지점부 단면; 프리스트레스 도입 실험; 유한요소해석 Continuous steel box girder; CFT; Prestress; Continuous steel box section; Prestressing inducing test; FE analysis |
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Abstract |
The increasing sectional stiffness and inducing prestress method of continuous steel box girder using modular CFT members use the restoring force of the CFT module generated from removing the prestressing bars in the CFT module after integrating the prestressed CFT module with the lower steel plate of the steel box girders as a prestressing force. The integrated CFT module in the steel box girder can improve the sectional stiffness of the continuous steel box girder section. To examine the applicability of the introduction of prestressing to the integrated steel box girder using the CFT module, in this study, inducing prestressing tests were conducted using CFT modules for steel plate specimens simulating the lower steel plate of the continuous steel box girder, and FE analyses were conducted for inducing prestressing tests. In addition, to confirm the effect of inducing prestress to the actual steel box girder and increasing sectional stiffness by the CFT modules, FE analyses for the actually applicable continuous steel box section were carried out depending on prestressing force and sectional conditions of the CFT modules, FE analysis results were compared.
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