Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Risk Evaluation of Longitudinal Cracking in Concrete Deck of Box Girder Bridge

콘크리트 박스거더 교량 바닥판의 종방향 균열 위험성 정가

  • Kim, Eui-Sung (Civil Development Team, Hyundai Development Company)
  • 김의성 (현대산업개발 토목개발팀)
  • Published : 2008.10.31
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Abstract

The occurrence of longitudinal cracking in concrete deck of box girder bridge is affected by many factors, but the most important factors are the shrinkage and thermal gradient of deck slabs. In this study, therefore, the tensile stresses at the bottom of deck were calculated from the experimental data(autogeneous shrinkage, drying shrinkage, and thermal gradient of deck slab). Also, the possibility of longitudinal cracks at bottom of deck was estimated. For this purpose, full-scale box girder segments have been fabricated and tested. The thermal gradients and shrinkage strains of deck slabs were measured after placement of concrete. Also, analytic program was conducted for the evaluation of longitudinal cracking in bridge deck considering differential shrinkage induced from non-uniform moisture distributions in concrete.

Keywords

References

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