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Çѱ¹µµ·ÎÇÐȸ / v.11, no.1, 2009³â, pp.203-215
Æ÷½ºÆ® Åټǵå ÄÜÅ©¸®Æ® Æ÷ÀåÀÇ Á¾¹æÇâ ±äÀå ¼³°è ¹æ¾È
( Design Methodology of Longitudinal Post Tensioning for Post-Tensioned Concrete Pavement )
À±µ¿ÁÖ;±è¼º¹Î;¹èÁ¾¿À; °æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;°æÈñ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;(ÁÖ)»ï¿ì¾ÆÀÌ¿¥¾¾ ±â¼ú¿¬±¸¼Ò;
 
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º» ¿¬±¸´Â Æ÷½ºÆ® Åټǵå ÄÜÅ©¸®Æ® Æ÷Àå(PTCP: Post-Tensioned Concrete Pavement)ÀÇ Á¾¹æÇâ ±äÀå ¼³°è ¹æ¾ÈÀ» ±¸ÃàÇϱâ À§ÇÏ¿© ¼öÇàµÇ¾ú´Ù. ¿ì¼± Á¾¹æÇâ ±äÀåÀ¸·Î ÀÎÇØ PTCP ½½·¡ºê¿¡ ¹ß»ýÇÏ´Â ÀÀ·ÂºÐÆ÷¸¦ ºÐ¼®ÇÏ¿´´Ù. ±×¸®°í ¼³°è¿¡ ÇÊ¿äÇÑ È¯°æÇÏÁß°ú Â÷·ûÇÏÁßÀÌ PTCP ½½·¡ºê¿¡ ÀÛ¿ëÇÒ ¶§ ½½·¡ºê¿¡ ¹ß»ýÇÏ´Â ÀÎÀåÀÀ·ÂÀÇ ºÐÆ÷¸¦ ºÐ¼®ÇÏ¿´´Ù. ¶ÇÇÑ ½½·¡ºê¿Í ÇϺÎÁö¹Ý »çÀÌÀÇ ¸¶ÂûÀúÇ× ¹× ±äÀåÀ¸·Î ÀÎÇØ ¹ß»ýÇÏ´Â ¿©·¯ ¼Õ½Ç¿øÀεéÀ» °í·ÁÇÏ¿© ±äÀå¼Õ½Ç·®À» »êÁ¤ÇÏ¿´´Ù. ¼³°è¿¡ »ç¿ëµÉ ¹ß»ý ÀÎÀåÀÀ·ÂÀº °¢°¢ÀÇ ÇÏÁß¿¡ ÀÇÇØ ¹ß»ý °¡´ÉÇÑ ÃÖ¾ÇÀÇ Á¶°Ç¿¡ ÀÇÇØ »êÁ¤µÇ¸ç ¿©·¯ ¼Õ½ÇµéÀº ÇöÀåÁ¶°ÇÀ» ÃÖ´ëÇÑ ¹Ý¿µÇÏ¿© »êÁ¤µÈ´Ù. ÀÌ·¯ÇÑ È¯°æ ¹× Â÷·ûÇÏÁß µîÀÇ ¼³°èÇÏÁß°ú ±äÀå ½Ã ¹ß»ýÇÏ´Â °¢Á¾ ¼Õ½ÇµéÀ» °¨¾ÈÇÑ À¯È¿±äÀå·®À» »êÁ¤ÇÏ¿´À¸¸ç ±äÀåÀÀ·Â °áÁ¤ÀÇ ±âÁØÀÌ µÇ´Â ÄÜÅ©¸®Æ® ½½·¡ºêÀÇ Çã¿ëÀÎÀåÀÀ·ÂÀÇ ¿µÇâ¿¡ ´ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù. ±Ã±ØÀûÀ¸·Î Á¾¹æÇâ ±äÀå ¼³°è¹æ¾ÈÀº ¼³°èÇÏÁß¿¡ ´ëÇÑ ½½·¡ºêÀÇ ÀÀ·ÂÀ» »êÃâÇÑ ÈÄ ÄÜÅ©¸®Æ® ½½·¡ºêÀÇ Çã¿ëÀÎÀåÀÀ·ÂÀ» °¨ÇÏ¿© ¿ä±¸µÇ´Â ±äÀåÀÀ·ÂÀ» »êÃâÇϰí, °¢Á¾ ¼Õ½ÇÀÌ °í·ÁµÈ À¯È¿±äÀå·®°úÀÇ ºñ±³¸¦ ÅëÇØ ÇÕ¸®ÀûÀÎ ±äÀå°£°Ý ¹× ±äÀå·®À» °áÁ¤ÇÏ´Â °ÍÀÌ´Ù.
This study was conducted to develop the design methodology of longitudinal post tensioning for the post-tensioned concrete pavement (PTCP). The longitudinal stress distribution in the PTCP slab was analyzed when post tensioning was applied. Then, the tensile stress distribution in the PTCP slab due to the environmental and vehicle loads needed for the design was investigated. In addition, prestress losses were calculated considering the losses due to the frictional resistance between the slab and underlying layer and due to various reasons related to tensioning. The tensile stresses used for the design were obtained by adding the stresses from the critical conditions under both the environmental and vehicle loads. The prestress losses were obtained by considering actual field conditions. The effective post tensioning amount was determined by considering the design loads including environmental and vehicle loads and various losses, and the effect of the allowable tensile stress on the post tensioning amount was investigated. The initial stage of the design of the longitudinal post tensioning is to obtain the stresses under the design loads and the required prestress determined by subtracting the allowable tensile stress from the design stress. Then, the optimal tendon spacing and the tensioning amount can be obtained by comparing with the effective tensioning amount including various stress losses.
 
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Æ÷½ºÆ® Åټǵå ÄÜÅ©¸®Æ® Æ÷Àå;ÇÁ¸®½ºÆ®·¹½º;Á¾¹æÇâ ±äÀå;¼³°è;ȯ°æÇÏÁß;Â÷·ûÇÏÁß;post-tensioned concrete pavement;prestress;longitudinal tensioning;design;environmental loading;vehicle loading;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.11, no.1, 2009³â, pp.203-215
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200911850421620)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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