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Çѱ¹µµ·ÎÇÐȸ / v.9, no.2, 2007³â, pp.27-37
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ÇÁ¸®Ä³½ºÆ® ÄÜÅ©¸®Æ® Æ÷Àå ½Ã°ø ½Ã ÃÖÀû ½½·¡ºê ¸®ÇÁÆÃ À§Ä¡
( Optimum Slab-Lifting Positions for Precast Concrete Pavement Construction ) |
| ±è¼º¹Î;Á¶º´ÈÖ;ÇѽÂȯ; °æÈñ´ëÇб³ Åä¸ñ°ÇÃà´ëÇÐ Åä¸ñ°øÇÐ;°æÈñ´ëÇб³ Åä¸ñ°ÇÃà´ëÇÐ Åä¸ñ°øÇаú;Çѱ¹µµ·Î°ø»ç µµ·Î±³Åë±â¼ú¿ø;
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| º» ¿¬±¸´Â ÇÁ¸®Ä³½ºÆ® ÄÜÅ©¸®Æ® Æ÷Àå ½Ã°øÀ» À§ÇÏ¿© °øÀå¿¡¼ ¹Ì¸® Á¦ÀÛµÈ ÄÜÅ©¸®Æ® ½½·¡ºê¸¦ ¸®ÇÁÆÃÀ» ÇÒ ¶§ ¸®ÇÁÆÃ À§Ä¡¿¡ µû¸¥ ½½·¡ºêÀÇ ÀÀ·Âº¯È¸¦ ±âÁØÀ¸·Î ½½·¡ºêÀÇ ¼Õ»óÀ» ÃÖ¼ÒÈÇÒ ¼ö ÀÖ´Â °¡Àå ¾ÈÀüÇÑ ÃÖÀû ¸®ÇÁÆÃ ÁöÁ¡À» ¼±Á¤Çϱâ À§ÇÏ¿© ¼öÇàµÇ¾ú´Ù. ¸®ÇÁÆÃ ½Ã ½½·¡ºêÀÇ ÀÀ·ÂºÐÆ÷¸¦ ºÐ¼®Çϱâ À§ÇÏ¿© À¯ÇÑ¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÑ ¸ðµ¨À» »ç¿ëÇÏ¿´À¸¸ç ½½·¡ºê ±Ô°ÝÀº ½ÃÇè½Ã°ø¿¡¼ »ç¿ëÇÑ Å©±â¸¦ Àû¿ëÇÏ¿´´Ù. ¸®ÇÁÆÃÀº Ç×»ó ½½·¡ºêÀÇ ¼öÁ÷¹æÇâÀ¸·Î ¼öÇàÇÏÁö´Â ¾Ê±â ¶§¹®¿¡ ¼öÁ÷À¸·Î ¸®ÇÁÆÃ ÇÏ¿´À» ¶§¿Í $60^{circ},;30^{circ}$·Î °æ»ç°¢À» ÁÖ¾î ¸®ÇÁÆÃ ÇÏ¿´À» ¶§ÀÇ ÀÀ·Âº¯È Ư¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. ¶ÇÇÑ ¸®ÇÁÆÃ ÁöÁ¡Àº Ç×»ó ½½·¡ºêÀÇ Áß°£ ±íÀÌÀÎ Á߸³ÃàÀÇ À§Ä¡°¡ ¾Æ´Ï±â ¶§¹®¿¡ Á߸³ÃàÀ¸·ÎºÎÅÍ 7.5cm. 15cm¸¸Å ¼öÁ÷Æí½ÉÀ» ÁÖ¾î ¸®ÇÁÆÃÇÏ¿´À» ¶§ÀÇ ÀÀ·Âº¯È Ư¼ºµµ ºÐ¼®ÇÏ¿´´Ù. ±×¸®°í ½ÇÁ¦ ½Ã°ø ½Ã ÁöÁ¡ºÎºÐ¿¡ º¸°À» ÇÏ´Â °ÍÀ» ¿°µÎÇÏ¿© ÁöÁ¡ºÎ ÀÀ·ÂÁýÁßÇö»óÀ» ¹«½ÃÇÑ °æ¿ì¿Í º¸°ÀÌ ¾øÀ» °æ¿ìÀÇ ÀÀ·ÂÁýÁßÇö»óÀ» °í·ÁÇÑ °æ¿ì·Î ³ª´©¾î ºÐ¼®ÇÏ¿´´Ù. ÀÌ·¯ÇÑ ÇØ¼®À» ÅëÇØ ¸®ÇÁÆÃ °æ»ç°¢°ú Æí½É¿¡ µû¸¥ ÃÖÀû ¸®ÇÁÆÃ À§Ä¡¸¦ ¼±Á¤ÇÏ¿´À¸¸ç ¹Ì±¹ÀÇ PCI±âÁذúµµ ºñ±³ ºÐ¼®ÇÏ¿´´Ù. |
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| This research was conducted to determine the optimum lifting positions on precast concrete slabs for precast concrete pavement construction, based on the analysis of concrete stress distribution under various lifting conditions. To analyze stresses in concrete slabs, the finite element method was implemented and a numerical model of the precast slab that was going to be used in the experimental construction was developed. Changes in the stress distribution due to the lifting angle were investigated because slab lifting is not always performed in the perpendicular direction to the slab surface. In addition, the effect of the lifting level, the distance between the neutral axis of the slab and the lifting point, on the stress distribution was investigated since the lifting point is not always at the neutral axis of the slab. To consider the actual steel design of the precast slab, the effect of the reinforcement near the lifting point was also investigated. From this study, the optimum lifting positions of the precast slabs were determined according to the lifting angle and level, and the results were compared with the lifting positions used in the PCI standards. |
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| Ű¿öµå |
| ÇÁ¸®Ä³½ºÆ® Æ÷Àå;ÄÜÅ©¸®Æ® ½½·¡ºê;¸®ÇÁÆÃ;°æ»ç°¢;Æí½É;ÀÀ·ÂÁýÁß;precast pavement;concrete slab;lifting;lifting angle;lifting level;stress concentration; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.9, no.2, 2007³â, pp.27-37
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200722941481974)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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