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Title |
Reinforcement Effects using V Type External Strands on PSC I Girder Bridges
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DOI |
http://dx.doi.org/10.11112/jksmi.2016.20.3.049 |
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Keywords |
PSC I 거더 ; 재하실험 ; 구조해석프로그램 MIDAS CIVIL ; 탄성패드 ; 휨성능 및 전단성능 ; 동적구조거동 PSC I girder bridges ; Loading tests ; MIDAS ; Elastic pad ; Flexural and shear ability ; Dynamic behavior |
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Abstract |
This study intended to analyze reinforcement effects of PSC I girder bridges to which prestresses are introduced using V type of external strands. So that series of bridge loading tests are carried out on existing PSC I girder bridge for the cases of before-reinforcement and reinforcement. The measured results from tests being analyzed and compared with the ones from MIDAS structural analyzing program, the reinforcing effects of the reinforcement system adopted in this study were investigated. It is found out that when the V type systems are applied to the bridge girders, the slope of load distribution factor curves become lower improving soundness of bridge upper structure. And also it is confirmed that the reinforcement system in this study can be taken as helpful for improvement of both flexural and shear ability of PSC I girder bridges, as well as dynamic behavior. Furthermore it is found when the elastic pads are applied to the system, dynamic reinforcing effects are maximized.
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