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Title |
Evaluation of Fire-induced Damage for Shield Tunnel Linings Subjected to High Temperatures
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Keywords |
실물모형 화재실험 ; 쉴드터널 라이닝 ; 잔존압축강도 ; 수열온도 ; Full-scale fire test ; Heating temperature ; Residual compressive strength ; Shield tunnel lining |
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Abstract |
The aim of this study is to evaluate fire-induced damage for shield tunnel linings. Full-scale fire test was conducted to evaluate fire-induced damage. Residual compressive strength was measured on the core samples of shield tunnel lining subjected to high temperatures. Heating temperature was predicted by XRD and TG analysis. As a result, Strength degradation of concrete with temperatures can be evaluated by residual compressive strength of core samples. In addition, residual compressive strength can be estimated by previous studies if heating temperature is exactly predicted. It is possible that heating temperature is predicted by XRD and TG analysis at 450℃. For more accurate prediction of heating temperature it should be performed both instrumental analysis and analytical methods with temperatures ranging from 400~600℃.
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