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http://dx.doi.org/10.15683/kosdi.2019.12.31.479

Damage Analysis of the Bridge Structure Caused by Fire Outbreak  

Lee, Hak-Sool (Department of Architecture and Civil Engineering, Yeoju Institute of Technology)
Yang, Sung-Ryong (Department of Architecture and Civil Engineering, Yeoju Institute of Technology)
Publication Information
Journal of the Society of Disaster Information / v.15, no.4, 2019 , pp. 479-492 More about this Journal
Abstract
Purpose: The purpose of this study is to accurately analyze the damage of bridges in order to determine whether fire bridges can be used continuously or to provide information on maintenance augmentation data. Method: XRD, SEM and EDS analyzes of concrete were carried out to estimate the fire temperature transferred to the structure, and analyzed by depth and area from PSCI beam and bottom plate concrete surface. Results: Test results G12,11 for the fire zone concrete were confirmed to be affected by heat up to depth of 60mm and the temperature of the hydrothermal heat was above 1000℃. Also, the girder G10,9,8 was relatively weakly damaged compared to G12,11, and the degree of damage was confirmed to be affected by heat up to a depth of 40 mm. Conclusion: Based on the analyzed data, it is considered that if the repair / reinforcement and periodic inspection are carried out, the bridge can secure sufficient safety even considering the damage caused by the fire.
Keywords
Damage analysis; fire outbreak; XRD (x-ray diffraction); SEM (scanning election microscope); EDS (energy dispersive x-ray spectroscopy); Compression strength; tension strength;
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