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Fatigue Strength For The Butt Welded Joint Of High Strength Steel  

Kim, Sung Hoon (서울산업대학교 구조공학과)
Bae, Doo Byong (국민대학교 건설시스템공학부)
Kim, Myeong Kwan (서울산업대학교 구조공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.14, no.2, 2002 , pp. 385-394 More about this Journal
Abstract
Currently, high strength steel is not used for steel bridges in Korea, except for the SM570 high strength steel in very isolated cases. The study aimed to promote the active adaptation of high strength steel for long-span steel bridges. Thus, the fatigue behavior of SM570 and POSTEN80 high strength steel was investigated. For the experimental study, the butt welded joints samples were manufactured. Likewise, regular amplitude tensile fatigue tests were conducted. Test results, e.g., location of fatigue cracks and their propagation were compared with the findings of other researchers. After analyzing the effects of fatigue strength, e.g., static tensile strength and plate thickness of base metal, basic data for fatigue design criteria of SM570 and POSTEN80 high strength steel were presented.
Keywords
High Strength Steel; Butt Welded Joint; Fatigue Strength; Effect of Plate Thickness;
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