• Title/Summary/Keyword: structure damage zone,fire duration

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A Study on the Damage to a Concrete Bridge Pier due to Fire (화재를 입은 콘크리트 교각의 손상에 관한 연구)

  • 윤우현
    • Magazine of the Korea Concrete Institute
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    • v.7 no.2
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    • pp.117-125
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    • 1995
  • In this study, the damage to a concrete br~dge pier due to flre caused by the fall of an oil truck were investigated by the use of FEM and by tensile tests for reinfortements. And thtse results were analyzed and compared with the measured values. In the FEM calculations, the selected variable was the fire temperature $T_a=500-800^{\circ}C$. The fixed values were the heat transition coefficient ${\alpha}=2000W/m^2{\cdot}K$. the initial temperature of concrete $T_0=5{\circ}C$ and the fire duration t=30 minutes. As the results obtained from numerical calculations, the property darrlage zone ap,)eared to be 1.5-4.1cm and the structure damage zone appeared to be 8.7- 10.1cm from the concrete surface. And this results give values very similar to those measured, nanlelv 2-4cm and 8~10cm respectively. The results frorn tensile tests give no serious loss of the tensile strength.