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公路涵洞衬砌混凝土火灾损伤特征 被引量:1

Damage Features of the Lining Concrete After Conflagration
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摘要 铜-黄公路涵洞衬砌混凝土的火灾持续时间约9h,最高温度超过1 000℃。衬砌混凝土的损伤是不均匀的,根据残留受火混凝土的颜色、裂隙发育特征及疏松程度,将其损伤程度划分为轻度损伤、中等损伤、严重损伤和破坏4个等级,依此判别其残余强度。衬砌混凝土的局部损伤特征受火灾发生时的火源、燃料供给、受火区段的地形、通风等因素的影响。 Based upon the damage features of the lining concrete of a culyert in Tong-Huang highway after conflagration, it is concluded that the conflagration had lasted about nine hours and its highest temperature exceeded 1 000℃. The lining concrete endured damage in varying degrees, which are ranked into four types, i.e. gently damaged, moderately damaged, seriously damaged and thoroughly damaged, according to their colors and fractural features. The damage degree can be used to identify the residual strength of the concrete after conflagration. It is concluded that the damage features of the lining concrete are related to fire source, fuel supplying mode, landscape and ventilation condition of the conflagration.
出处 《建筑结构》 CSCD 北大核心 2006年第12期70-73,共4页 Building Structure
关键词 衬砌混凝土 火灾 损伤特征 铜-黄公路 lining concrete conflagration damage feature Tong-Huang highway
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  • 1刘义祥,胡建国,侯爽.不同温度下混凝土受热痕迹的扫描电子显微分析[J].火灾科学,2005,14(2):80-83. 被引量:10
  • 2马建秦.火灾中衬砌混凝土的爆裂损伤特征[J].混凝土,2007(2):22-25. 被引量:3
  • 3Caner,A.,Zlatanic,S.,Munfah,N..Structural Fire Performance of Concrete and Shotcrete Tunnel Liners[J].Journal of Structural Engineering,2005.131(12):1920-1925.
  • 4Khoury,G.A..Passive protection against fire[J].Tunnel & Tunneling International,2002,34(11):40-42.
  • 5Peng,G-F..Evaluation of Fire Damage to High Pedormance Concrete[D].A Thesis for Doctor Degree in the Hong Kong Polytechnic University,2000.
  • 6Peng,G-F,Cha,S.Y.N.,Song,Q-M.and Yi,Q-X.Effect of High Temperature on Concrete:A Review[J].Key Engineering Materials.2006,302-303:138-149.
  • 7Milke,J.A Analytical methods to evaluate fire resistance of structural members[J]dournal of Structural Engineering,1999(10):1179-1187.
  • 8Kedur,V.K.R.and Sultan,M.A..Effect of Temperature on Thermal Properties of High-Strength Concrete[J].Journal of Materials in Civil Engineering,2003(34):101-107.
  • 9Kedur,V.K.R..Spalling in high strength concrete exposed to fire concerns,causes,critical parameters and cures[J]tructure,2000(103):180-188.
  • 10Poon,C-S.and Azhar,S..Deterioration and Recovery of Metakaolin Blended Concrete Subjected to High Temperature[J].Fire Technology,2003(39):35-45.

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