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Title |
A Study for Relation Between Fatigue and Structural Members on Othortropic Steel Deck
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Keywords |
직교이방성 강바닥판 ; 피로응력 ; 펠리칸-에슬링거 방법 ; 폰-마이세스 등가 응력 Othortropic steel deck ; Fatigue stress ; Pelikan-Esslinger method ; Von-mises equivalent stress |
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Abstract |
Improvement of steel material quality made fatigue problems more critical than failure of the material itself. In many cases, cracks on the welded parts of steel deck bridges are reported against the failure of steel materials. And the cracks are caused by alternate stress on the welded parts due to live loads on the bridge. The range of alternate stress on the welded part is related to property of the sections which compose othortropic steel deck. Othortropic steel deck is mainly composed of deck plate, ribs and floor beams, wearing surface, etc. In this paper, a methology to estimate the alternate stress for pthortropic steel deck using Pelikan-Esslinger method and signed Von-Mises equivalent stress is proposed first. Parametric study served references for fatigue stresses when designing or repairing othortropic steel deck bridges, by analyzing relationship between alternate stress range and properties of steel deck members.
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