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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.5, 2005³â, pp.171-177
ÅͳΠȭÀç·Î ÀÎÇÑ ÄÜÅ©¸®Æ® ¼¼±×¸ÕÆ®ÀÇ ¼Õ»óƯ¼º ±Ô¸í
( Eire-induced Damage to Shield TBM Concrete Segment )
ÃÖ¼ø¿í;Àå¼öÈ£;À̱ÔÇÊ;¹è±ÔÁø; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø Áö¹Ý¿¬±¸ºÎ;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø Áö¹Ý¿¬±¸ºÎ;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø Áö¹Ý¿¬±¸ºÎ;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø Áö¹Ý¿¬±¸ºÎ;
 
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ÁöÇϰø°£¿¡¼­ÀÇ È­Àç´Â ÀÎ¸í ¹× Àç»êÇÇÇØ »Ó¸¸ ¾Æ´Ï¶ó ÁöÇϱ¸Á¶¹°¿¡ ½É°¢ÇÑ ¼Õ»óÀ» ¹ß»ý½ÃŲ´Ù. ÀÌ·¯ÇÑ È­Àç·ÎºÎÅÍ ±¸Á¶¹°À» º¸È£Çϱâ À§Çؼ­ È­Àç¿¡ ÀÇÇÑ ÁöÇϱ¸Á¶¹° ½Ã°øÀç·áÀÇ ¼Õ»óÀ» ÆÄ¾ÇÇÏ´Â °ÍÀº ¸Å¿ì Áß¿äÇÑ »çÇ×ÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â È­Àç¿¡ ÀÇÇÑ ÁöÇϱ¸Á¶¹°ÀÇ ¼Õ»óÀ» ÆÄ¾ÇÇϱâ À§ÇÏ¿© ÁöÇϰø°£ È­Àç¸ðÀǽÃÇè °¡¿­·Î¸¦ Á¦ÀÛÇÏ¿´°í, ½¯µå TBM ÄÜÅ©¸®Æ® ¼¼±×¸ÕÆ®½ÃÆí¿¡ ´ëÇÏ¿© ¸ðÀÇ È­Àç½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ¼öÇàµÈ ½ÇÇèÀº 5ºÐ¿¡ $1,200^{circ}C$¿¡ µµ´ÞÇÏ¿© 1½Ã°£µ¿¾È À¯ÁöÇÑ ÈÄ 2½Ã°£¿¡ °ÉÃÄ ¼ÒÈ­µÇ´Â RABT°î¼±À» ¸ð»çÇÏ¿´´Ù. ½ÃÇèü³»¿¡ ¼³Ä¡µÈ ¿Âµµ¼¾¼­·Î È®ÀÎÇÑ °á°ú, È­Àç¸éÀ¸·ÎºÎÅÍ ¾à 20cm±îÁö Æø·ÄÀÌ ¹ß»ýÇÏ¿´´Ù. ¶ÇÇÑ ½ÃÇèÀÌ ¿Ï·áµÈ ºí·°½ÃÆíÀ¸·ÎºÎÅÍ Ã¤ÃëµÈ ÄÚ¾î½ÃÆí¿¡ ¼öÇàµÈ ¹°¸®$cdot$È­ÇÐÀû ½ÇÇèÀ» ÅëÇÏ¿© Æø·Ä¸éÀ¸·ÎºÎÅÍ ¾à l0cm±îÁö ½Ã°øÀç·áÀÇ Æ¯¼ºÀÌ ÀúÇϵǾúÀ½À» È®ÀÎÇÏ¿´´Ù.
Fire in underground space may induce severe structural damage as well as heavy casualties. To protect underground structure and passengers from fire, it is very essential to characterize fire-induced damage on construction materials of underground structures. In this study, the high-temperature furnace was manufactured to evaluate fire-induced damage on underground structure materials. Especially, this study aimed at the evaluation of fire-induced damage on the shield TBM concrete segment. In the fire tests, furnace temperature was set to reach 1,200 degrees at five minutes after Ignition. The temperature of 1,200 degrees was kept during one hour, and the fire was extinguished after two hours elapsed. From the temperature measurement by thermocouples embedded in test specimens, the spatting was estimated to reach approximately 20 cm from the surface exposed to fire. After the fire tests, the alteration of physico-mechanical properties and microstructures of concrete segment was investigated from core specimens. The results showed that apart from spatting, the deterioration depth of the remaining concrete material amounted to approximately 10 cm from the spatting surface.
 
Ű¿öµå
Fire;Horizontal furnace;Material damage;Spatting;Underground structures;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.5, 2005³â, pp.171-177
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200504704325691)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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