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Title |
Flexural Behaviors of PSC Composite Girders in Positive Moment Regions
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Keywords |
콘크리트 충전 강관; PSC 합성거더; 정모멘트 구간 거동; 비선형 유한요소해석; concrete infilled tube; prestressed composite girder; positive flexural behavior; nonlinear finite element analysis |
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Abstract |
Prestressed composite girder with concrete infilled steel tubes(PSC-CFT girder) is new type of bridge girder which enhances the resisting capacities due to the double composite action of PSC composite girder and concrete infilled tube. The flexural behaviors of PSC-CFT girder in the positive moment regions are investigated based on the experimental observations recently performed on two of 4.4m long specimens. The mechanical and structural roles and failure mechanism of the composite action are discussed through comparing the test results with those numerically predicted by the three methods of one- and three-dimensional nonlinear finite element analyses, and section analysis method.
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