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Title |
The Evaluation of Structural Behavior of Hollowed PPC Girder Using Lightweight Aggregate Concrete
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Keywords |
프리스트레스트 콘크리트 ; 경량골재 ; 중공형 프리캐스트 거더 Prestressed concrete ; Light weight aggregate ; Hollowed prefabricated prestressed concrete girder |
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Abstract |
Recently prestressed concrete bridges are generally used instead of reinforced concrete. PSC is more durable than RC because it can reduce crack problems, reinforcement corrosion, leakage and carbonation etc. And also PSC is more effective because there is no crack in tension area, and the entire concrete section is considered in section analysis. And it can reduce section size because vertical component by prestressing force can reduce the shear force. However, using high strength concrete can increase the self weight of bridge because of it's higher density. So the hollowed PPC girder with light weight aggregate can be a alternative. In this study the hollowed PPC girder with light weight aggregate is designed and the performance of hollowed PPC girder is evaluated by experimental tests as well as numerical analysis. As a result, The hollowed PPC girder of light aggregate behaved fully elastically under service load of 110kN, and the plastic behavior was showed after elastic behavior through experimental test, and it can be also estimated by numerical analysis.
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