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Title |
Nonlinear Analysis of Compressive Flange Based on Folded Plate Theory
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Keywords |
좌굴 ; 압축플랜지 ; 절판 ; 잔류응력 ; 극한강도 Buckling ; Compressive flange ; Folded plate ; Residual stress ; Ultimate strength |
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Abstract |
Compressive flanges of steel box girder is designed based on the ultimate strength behavior of sub-panel which is enclosed with longitudinal stiffeners and transverse stiffeners on appropriate safety factor. However, it is rational that the ultimate strength is calculated considering the various factors such as number and stiffness of longitudinal stiffener, spacing of transverse stiffener, initial deformation and residual stress distribution. In this study, an analysis program based on Folded Plate theory is developed considering the geometric effects and the material nonlinearity. The analysis program is applicated to the steel box girder bridges which is really constructed in domestic.
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