Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Evaluation of Compressive Strengths of Tubular Steel Members According to Corrosion Damage and Shape

원형 강관의 국부 부식손상 수준 및 손상형태에 따른 압축강도 성능평가

  • Ahn, Jin Hee (Dept. of Civil Engineering, Gyeongnam National University of Science and Technology) ;
  • Nam, Dong Kyun (Dept. of Civil Engineering, Gyeongnam National University of Science and Technology) ;
  • Lee, Won Hong (Dept. of Civil Engineering, Gyeongnam National University of Science and Technology) ;
  • Huh, Jungwon (Dept. of Ocean and Civil Engineering, Chonnam National University) ;
  • Kim, In Tae (School of Urban, Architecture and Civil Engineering, Pusan National University)
  • 안진희 (경남과학기술대학교, 토목공학과) ;
  • 남동균 (경남과학기술대학교, 토목공학과) ;
  • 이원홍 (경남과학기술대학교, 토목공학과) ;
  • 허정원 (전남대학교 해양토목공학과) ;
  • 김인태 (부산대학교, 건설융합학부 토목공학전공)
  • Received : 2015.08.27
  • Accepted : 2016.04.19
  • Published : 2016.08.27
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Abstract

For a steel structure with long service period, structural performance can be changed or decreased by corrosion damage occurred under severe corrosion environment condition. In this study, to examine compressive strength and behavior of circular steel member depending on corrosion damage, compressive loading tests were conducted using circular steel member with artificial corrosion damage which was applied by mechanical process and hand drill. From test results, local corrosion area and pattern is related to their structural performance. Their lcoal bucklings were occurred near artificially sectional damaged part. Reduction in compressive strength of circular steel member was also suggested according to their corroded part and damage.

극심한 대기부식 환경에 설치된 강구조물은 사용기간 증가에 따라 발생한 부식손상에 따라 구조성능의 변화나 감소가 발생할 수 있다. 본 연구는 부식손상 특징에 따른 강관부재의 압축강도 성능 변화를 평가하기 위하여 강관 시험체에 인위적인 부식손상을 도입한 후 압축강도 평가시험을 통하여 부식손상에 따른 압축강도 변화 및 거동변화를 평가하였다. 부식손상의 경우 단면에 대한 국부적인 부식손상의 형태 및 위치의 영향이 있는 것으로 평가되었으며, 국부부식 위치와 부식손상으로 인한 단면이 변화부 주위에서 국부 변형에 의한 파괴가 발생하는 것으로 분석되었다. 또한 본 연구결과를 통하여 부식의 분포 및 부식의 손상량에 따른 강관부재의 압축강도 변화관계를 부식손상량에 따라 평가할 수 있도록 제시하였다

Keywords

References

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