Journal of Welding and Joining

  • 제16권4호
  • /
  • Pages.73-82
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  • 1998
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
권호 표지

교량 신축이음창치 용접부의 피로강도 해석

Analysis of Fatigue Strength in Expansion Joint Weldment of Bridge

  • 이용복 (홍익대학교 기계공학과) ;
  • 정진성 (홍익대학교 기계공학과) ;
  • 박영근 (홍익대학교 기계공학과) ;
  • 김태윤 (홍익대학교 기계공학과) ;
  • 김호경 (서울산업대학교 자동차공학과) ;
  • 박상흡 (천안공전 용접기술과)
  • 발행 : 1998.08.01
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초록

This paper is especially concerned with the weldment between support beam and square bar that plays important roles in control box of Expansion Joint as a brdige structure. Fatigue strength ({TEX}$$\sigma$_{ult}${/TEX}) of the weldment is dependent on notch factor ({TEX}$K_{f}${/TEX}) become important factors to predict fatigue life. The fatigue notch sensitivity (η) for metals can be divided into two types ; high and low notch sensitivity. In this work, the Expansion Joint weldment was found to have low notch sensitivity. The maximum strain distribution during static loading is similar to the FEM analysis. Fatigue test of real structure was performed up to {TEX}$10^{6}${/TEX} cycles to be compared with predicted endurance limit.

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