A case study on the fire damage of the underground box structures and its repair works
A case study on the fire damage of the underground box structures and its repair works
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DOI：
10.1016/j.tust.2005.12.042
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发表时间：
2006-05
影响因子：
6.9
通讯作者：
S. H. Park;H. Oh;Y. Shin;S. Oh
中科院分区：
文献类型：
--
作者：
S. H. Park;H. Oh;Y. Shin;S. Oh
通过现场考察、材料试验和温度应力分析，对2003年2月18日韩国大邱市域地铁火灾中地下箱形结构的损伤情况进行了研究。现场检查方面，检查了网状裂缝、混凝土表面剥落、混凝土剥落、钢筋外露等情况。同样，对于材料实验，在严重损坏的情况下收集芯样，以评估单轴抗压强度。在现场检测的基础上，围绕两个受损严重的区域进行温度应力分析，了解混凝土板应力随时间的变化规律。此外，对受损区域进行了维修和加固工程，目的是维持长期安全，这些工程也得到了处理。
This study was performed to find out the damage of the underground box structures in Daegu Municipal Subway, South Korea, damaged by the fire broken out in February 18, 2003 through site inspection, material experiment and thermal stress analysis. As regards site inspection, net shape cracks, the stripping of concrete surface, the spalling of concrete, reinforcement exposure, were inspected. Likewise as regards material experiments, core specimens were collected in case of the region damaged seriously in order to evaluate uniaxial compressive strength. Thermal stress analysis was conducted centering around the two regions damaged seriously on the basis of the results of the site inspection, on purpose to understand the variations in the stress of concrete slab according to the process of time. In addition, repair and reinforcement works were practiced to the region damaged, with intent to sustain long-term safety and such works were also dealt with.