한국안전학회지 (Journal of the Korean Society of Safety)
- 제15권4호
- /
- Pages.119-122
- /
- 2000
- /
- 1738-3803(pISSN)
- /
- 2383-9953(eISSN)
초기결함을 갖는 강교량의 피로시험 및 수명 평가
Fatigue Test and Service Life Assessment of Steel Truss Bridges with Initial Imperfections
초록
The truss bridge is composed of numerous steel beams. In long span bridges the size of beams is getting larger, so the number of plate girders is increasing instead of rolled beams. This plate girder has long welding lines at the intersection of steel plates. The improper welding at the intersection line causes the steel bridge to be structurally unsafe. In this paper the loss of member section from improper welding was measured and the experimental testing was performed to get the S-N curve from testing models with sectional losses. The improper welding resulted in the lowering of structural safety and the shortening of life cycle.