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Title |
An Investigation of the Shear Buckling Characteristics of Sinusoidal Corrugated Steel Plates
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Keywords |
좌굴모드형상 ; 고유치해석 ; 전체좌굴 ; 연성좌굴 ; 국부좌굴 ; 정현파형강판 ; 전단좌굴응력 Buckling mode shape ; Eigenvalue analysis ; Global buckling ; Interactive buckling ; Local buckling ; Sinusoidal corrugated plate ; Shear buckling stress |
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Abstract |
Corrugated steel plates are made by fabricating thin steel plates to have trapezoidal or sinusoidal corrugation, and the corrugated plates are able to maintain high out-of-plane rigidity even when they are used instead of thick flat plates. Also, corrugated steel plates have almost no axial rigidity due to the accordion effect. Thus, if they are applied to the webs of plate girders, designing can be easily conducted so that the webs bear only shear stresses. However, unlike flat plates, the shear buckling of corrugated steel plates has very complex characteristics where buckling occurs due to the interaction of local and global buckling, besides local buckling and global buckling. For the investigation of the cause and characteristics of this interactive buckling, studies on sinusoidal corrugated steel plates are fewer than studies on trapezoidal corrugated steel plates. Therefore, in this study, the shear buckling characteristics of sinusoidal corrugated steel plates and the occurrence pattern of interactive buckling were investigated. For the calculation of shear buckling strength, a finite element program was used, and the analysis results were compared with the exact solution. In addition, the characteristics of buckling stress change and the change of buckling mode shape depending on corrugation thickness and shape parameter were analyzed, and by comparing these results with the results of a theoretical equation, the timing of buckling mode change was analyzed.
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