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An Experimental Study on Thermal Damage and Spalling of Concrete Lining in Tunnel Fire  

Kim, Heung-Youl (한국건설기술연구원)
Kim, Hyung-Jun (한국건설기술연구원)
Cho, Kyung-Suk (한국건설기술연구원)
Lee, Jae-Sung (한남대학교)
Kwan, Ki-Hyuk (서울시립대학교)
Publication Information
Fire Science and Engineering / v.23, no.3, 2009 , pp. 110-120 More about this Journal
Abstract
In tunnel, though the frequency of fire occurrence is relatively lower than other structures, the characteristics of sealed space tends to cause the temperature to rapidly rise to more than $1000^{\circ}C$ within 5minutes after fire, which might eventually lead to a large fire that usually results in a loss of lives and the damage to the properties, not to mention a huge cost necessary for repair and maintenance after fire. We have developed various conditions of the heating furnace and the method to install a thermo couple within the furnace based on EFNARC and KS F 2257-1. Referring to tunnel fire scenarios, it clarified the heat transfer characteristics of concrete PC panel lining depending on fire intensity (ISO, $1^{\circ}C$/SEC, MHC, RWS), and to identify the range of thermal damage, the evaluation was carried out using ITA standard. As a result, 30mm under ISO fire condition, 20mm under $1^{\circ}C$/SEC, 100mm under MHC and 50mm under RWS were measured. And when it comes to spalling, 30mm was measured under RWS and MHC.
Keywords
Tunnel fire; Heating ratio; Spalling; Fire damage range;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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