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Çѱ¹µµ·ÎÇÐȸ / v.11, no.2, 2009³â, pp.141-149
ÁÙ´«ÄÜÅ©¸®Æ® Æ÷ÀåÀÇ TÇü ±Õ¿­ ¹ß»ý ¿øÀÎ ¼öÄ¡ ÇØ¼®
( Numerical Analysis off-Shape Cracking in Jointed Concrete Pavements )
À±µ¿ÁÖ;¼­¿µ±¹;±è¼º¹Î; °æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;Çѱ¹µµ·Î°ø»ç µµ·Î±³Å뿬±¸¿ø;°æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
 
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º» ¿¬±¸´Â ÁÙ´«ÄÜÅ©¸®Æ® Æ÷ÀåÀÇ ÁÙ´«ºÎ¿¡¼­ Á¾ ¹æÇâÀ¸·Î ¹ß»ýÇÏ´Â ±Õ¿­ÀÎ TÇü ±Õ¿­ÀÇ ¹ß»ý ¿øÀÎÀ» ¼öÄ¡ÇØ¼®À» ÅëÇØ ºÐ¼®Çϱâ À§ÇÏ¿© ¼öÇàµÇ¾ú´Ù. À̸¦ À§ÇØ ´ÙÀ£¹Ù¸¦ Æ÷ÇÔÇÑ ÁÙ´«ÄÜÅ©¸®Æ® Æ÷Àå ½½·¡ºêÀÇ À¯ÇÑ¿ä¼ÒÇØ¼® ¸ðµ¨À» °³¹ßÇÏ¿´À¸¸ç ÀÌ·¯ÇÑ ¸ðµ¨¿¡ ȯ°æÇÏÁßÀ» ÀçÇÏÇÏ¿© ½½·¡ºê¿¡ ¹ß»ýÇÏ´Â ÀÀ·Â ºÐÆ÷¸¦ ºÐ¼®ÇÏ¿´´Ù. ½½·¡ºêÀÇ Äøµ ½Ã ´ÙÀ£¹ÙÀÇ ¿µÇâÀ» ºÐ¼®Çϱâ À§ÇÏ¿© ¿ì¼± ´ÙÀ£¹Ù°¡ ¾øÀ» °æ¿ìÀÇ ½½·¡ºê Äøµ °Åµ¿À» ºÐ¼®ÇÏ¿´´Ù. ±×¸®°í ´ÙÀ£¹Ù°¡ ½½·¡ºê Äøµ ½Ã TÇü ±Õ¿­À» À¯¹ßÇÒ ¼ö Àִ Ⱦ¹æÇâ ÀÀ·Â ºÐÆ÷¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù. ¶ÇÇÑ ½Ã°ø¿ÀÂ÷·Î ÀÎÇØ ´ÙÀ£¹ÙÀÇ ¼³Ä¡ ±íÀ̰¡ ½½·¡ºê Áß°£ ±íÀÌ¿¡ À§Ä¡ÇÏÁö ¾ÊÀ» °æ¿ì ½½·¡ºê¿¡ ¹ß»ýÇÏ´Â ÀÀ·Â ÁýÁß Çö»ó¿¡ ´ëÇØ¼­µµ ºÐ¼®À» ¼öÇàÇÏ¿´´Ù. ¿¬±¸ °á°ú, ´ÙÀ£¹Ù°¡ ½½·¡ºê Áß°£ ±íÀÌ¿¡ Á¦´ë·Î ½Ã°øµÇ¾î ÀÖÀ» °æ¿ì¿¡´Â ½½·¡ºê¿¡ ¹ß»ýÇϴ Ⱦ¹æÇâ ÀÀ·Â¿¡´Â °ÅÀÇ ¿µÇâÀ» ¹ÌÄ¡Áö ¾Ê´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ÇÏÁö¸¸ ´ÙÀ£¹Ù°¡½½·¡ºê Áß°£ ±íÀ̺¸´Ù Ç¥¸é ÂÊÀ¸·Î Ä¡¿ìÃÄ À§Ä¡ÇÏ°Ô µÇ¸é ½½·¡ºêÀÇ Äøµ¿¡ ÀÇÇØ ½½·¡ºêÇ¥¸é¿¡ Ⱦ¹æÇâÀÀ·ÂÀÌ ÁýÁߵǴ °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ÀÌ·¯ÇÑ ÀÀ·Â ÁýÁßÀº ½½·¡ºê¿Í ´ÙÀ£¹ÙÀÇ Á¢ÃË ¼ºÁú¿¡ µû¶ó ´Ù¸£°Ô ³ªÅ¸³µÀ¸¸ç ¿©·¯ ´ÙÀ£¹Ùµé Áß ³ôÀ̰¡ ´Ù¸£°Ô ÀåÂøµÈ ´ÙÀ£¹ÙÀÇ À§Ä¡°¡ ½½·¡ºêÀÇ ¾ÈÂÊ¿¡ Á¸ÀçÇÒ¼ö·Ï ÀÌ·¯ÇÑ ´ÙÀ£¹Ù À§Ä¡¿¡¼­ÀÇ ÀÀ·Â ÁýÁßÇö»óÀÌ ¸Å¿ì Å©°Ô ³ªÅ¸³µ´Ù. µû¶ó¼­ ÁÙ´«ÄÜÅ©¸®Æ® Æ÷Àå¿¡¼­ TÇü ±Õ¿­ ¹ß»ýÀ» ¾ïÁ¦Çϱâ À§Çؼ­´Â ½Ã°ø ½Ã ´ÙÀ£¹Ù°¡¼³°èÀ§Ä¡¿¡ Á¤È®È÷ ÀåÂøµÇµµ·Ï ÁÖÀǸ¦ ±â¿ï¿©¾ß ÇÒ °ÍÀÌ´Ù.
This study was conducted to investigate the causes that induce the T-shape cracks at the joints in the jointed concrete pavements(JCPs). The finite element models of JCP including dowel bars were developed and the stress distribution in the slab was investigated under environmental loads. To investigate the effect of dowel bars on the transverse stresses at the joints that induce the T-shape cracks, the slab curling behavior was analyzed with and without dowel bars. In addition, the stress concentration was investigated when the dowel bar was not installed at the mid-depth of the slab. The results of this study showed that the transverse stresses were not affected by the dowel bars if the dowel bars were installed at the mid-depth of the slab. However, if the dowel bars were not installed at the mid-depth, the transverse stresses were concentrated at the dowel bar locations when the slab curled. The stress concentration was dependent on the contact characteristics between the dowel bar and concrete, and was significantly large when the dowel bar not installed at the mid-depth was located far from the edge of the slab. Therefore, to mitigate T-shape cracking in JCP, dowel bars should be very carefully installed and leveled at the proper locations.
 
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ÁÙ´«ÄÜÅ©¸®Æ® Æ÷Àå;TÇü ±Õ¿­;´ÙÀ£¹Ù;Äøµ;ÀÀ·Â;À¯ÇÑ¿ä¼ÒÇØ¼®;jointed concrete pavement;T-shape crack;dowel bar;curling;stress;finite element analysis;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.11, no.2, 2009³â, pp.141-149
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200921140045896)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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