KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Ultimate Shear Strength of Tapered Steel Plate Girders

높이가 변하는 플레이트거더의 극한전단강도

  • 이두성 (동국대학교 토목환경공학과) ;
  • 박찬식 (동국대학교 토목환경공학과) ;
  • 이성철 (동국대학교 토목환경공학과)
  • Received : 2005.11.09
  • Accepted : 2006.02.27
  • Published : 2006.03.30
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Abstract

Plate girders with variable depths have been often used at piers considering not only the economy but also an aesthetic aspect. Tapered plate girders exhibit more complicated behaviors than prismatic girders especially under shear. However, a comprehensive design method for the determination of the shear strength has yet to be developed mainly due to lack of study. In this study, investigated is the buckling and ultimate behaviors of tapered plate girders subjected to shear through finite element analyses. From the analysis results, a simple design formula is suggested for the evaluation of the shear strength of tapered plate girders.

정 부모멘트 사이의 효과적인 휨강성분배를 통한 경제적인 단면을 설계하고 하부플랜지의 교축방향 곡선화를 통한 교량의 미를 도모하기 위해, 강플레이트거더 교각부에서 높이가 변하는 복부판을 설계에 종종 반영하고 있다. 이 같은 높이가 변하는 플레이트거더의 전단거동은 일반적인 플레이트거더에 비해 복잡하다. 그러나 관련연구의 부족으로 현행 하중-저항계 수설계규정은 명확한 전단설계기준을 제시하고 있지 못하다. 본 연구에서는 전단력을 받는 높이가 변하는 복부판의 탄성좌굴 및 극한전단거동을 조사하기 위해 다양한 매개변수가 고려된 3차원 유한요소해석이 수행되었으며, 해석결과로부터 높이가 변하는 복부판의 전단강도를 간단하며 합리적으로 산정할 수 있는 전단설계식을 제안하였다.

Keywords

References

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