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Çѱ¹µµ·ÎÇÐȸ / v.11, no.4, 2009³â, pp.107-115
Æ÷½ºÆ®ÅÙ¼Ç ÄÜÅ©¸®Æ® Æ÷Àå ±äÀå ¼³°è¿¡ ´ëÇÑ ½½·¡ºê µÎ²²ÀÇ ¿µÇ⠺м®
( Investigation of Slab Thickness Influence on Prestressing Design of Post-Tensioned Concrete Pavement )
À±µ¿ÁÖ;±è¼º¹Î;¹èÁ¾¿À; °æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;°æÈñ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;°æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú, »ï¿ìIMC ±â¼ú¿¬±¸¼Ò;
 
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º» ¿¬±¸´Â Æ÷½ºÆ®ÅÙ¼Ç ÄÜÅ©¸®Æ® Æ÷Àå(PTCP: Post-Tensioned Concrete Pavement)ÀÇ ½½·¡ºê µÎ²²°¡ ±äÀå ¼³°è¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ¿© PTCP¿¡¼­ ÃÖÀûÀÇ ½½·¡ºê µÎ²²¸¦ ¼±Á¤Çϱâ À§ÇÏ¿© ¼öÇàµÇ¾ú´Ù. ¸ÕÀú ½½·¡ºê µÎ²²¿¡ µû¸¥ Â÷·û°ú ȯ°æÇÏÁß¿¡ ÀÇÇÑ ÀÎÀåÀÀ·ÂÀ» À¯ÇÑ¿ä¼ÒÇØ¼® ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ±¸ÇÏ¿´À¸¸ç Çã¿ë ÈÚ°­µµ¸¦ ¼±Á¤ÇÏ¿© ±äÀå ÀÀ·ÂÀ» »êÃâÇÏ¿´´Ù. ½½·¡ºêÀÇ ÄøµÀ» ¾ß±âÇϴ ȯ°æÇÏÁßÀº µÎ²²¿¡ µû¶ó µ¿ÀÏÇÑ ¿Âµµ±¸¹è ¹× µ¿ÀÏÇÑ »óÇϺΠ¿ÂµµÂ÷ÀÇ µÎ °¡Áö °¡Á¤À» ¸ðµÎ °í·ÁÇÏ¿´´Ù. ±×¸®°í ÇÁ¸®½ºÆ®·¹½ÌÀ» À§ÇÑ °­¼± ±äÀå ½Ã ±äÀå·®ÀÇ ¼Õ½ÇÀ» °í·ÁÇÏ¿© ½½·¡ºê µÎ²² º°·Î ±äÀå ¼³°è¸¦ ¼öÇàÇÏ¿´´Ù. ÀÌ·¯ÇÑ ¼³°è °á°ú¸¦ ºñ±³ ºÐ¼®ÇØ º¸¸é ÀϹÝÀûÀ¸·Î ½½·¡ºê µÎ²²°¡ Áõ°¡ÇÏ¸é °­¼±ÀÇ °³¼öµµ µû¶ó¼­ Áõ°¡µÇ±â ¶§¹®¿¡ ÄÜÅ©¸®Æ®¿Í °­Àç ºñ¿ë ¸ðµÎ°¡ Áõ°¡ÇÏ°Ô µÇ¾î ºñ°æÁ¦ÀûÀÎ ¼³°è°¡ µÈ´Ù. ȯ°æÇÏÁßÀÇ ¿µÇâÀÌ ¹Ì¾àÇÏ¿© µÎ²²°¡ Áõ°¡ÇÒ ¶§ °­¼±ÀÇ °³¼ö°¡ ÁÙ¾îµå´Â °æ¿ì¿¡µµ µÎ²² Áõ°¡¿¡ ÀÇÇÑ ºñ¿ëÀÌ °­Àç Àý°¨¿¡ µû¸¥ ºñ¿ëº¸´Ù ´õ Ä¿Áö¹Ç·Î µÎ²²°¡ Áõ°¡ÇÒ¼ö·Ï °æÁ¦ÀûÀÌÁö ¸øÇÏ´Ù. µû¶ó¼­ ÀϹÝÀûÀ¸·Î PTCP¿¡¼­ ½½·¡ºê µÎ²²´Â ½Ã°øÀÌ °¡´ÉÇÑ Á¤µµ¿¡¼­ ÃÖ¼Ò·Î À¯ÁöÇÏ´Â °ÍÀÌ Å¸´çÇÏ´Ù°í ÇÒ ¼ö ÀÖ´Ù.
This study was conducted to investigate the effect of the slab thickness on the tensioning design and to determine the optimal slab thickness of the post-tensioned concrete pavement (PTCP). The tensile stresses due to the vehicle and environmental loads were obtained using a finite element analysis model and the tensioning stress was calculated employing an allowable flexural strength. The environmental loads of both the constant temperature gradient and the constant temperature difference between top and bottom of the slab were considered. The tensioning designs for various slab thicknesses were performed considering prestressing losses. The comparison results showed that generally as the thickness increased, the number of tendons became larger. Consequently, the design was not economical for a thicker slab thickness. Even though the number of tendons became smaller with an increase in the thickness under the small environmental load, a thicker PTCP slab was not economical because of a higher cost of concrete than that of steel. Therefore, the slab thickness should be kept in minimum within the construction available thicknesses.
 
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Æ÷½ºÆ®ÅÙ¼Ç ÄÜÅ©¸®Æ® Æ÷Àå;½½·¡ºê µÎ²²;±äÀå;ȯ°æÇÏÁß;Â÷·ûÇÏÁß;ÀÎÀåÀÀ·Â;post-tensioned concrete pavement;slab thickness;tensioning;environmental load;vehicle load;tensile stress;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.11, no.4, 2009³â, pp.107-115
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200909659864474)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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