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Çѱ¹µµ·ÎÇÐȸ / v.12, no.4, 2010³â, pp.157-164
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ÇÁ¸®½ºÆ®·¹½º°¡ µµÀÔµÈ Á¢¼Ó½½·¡ºêÀÇ ½ÇÇèÀû °Åµ¿ ºÐ¼®
( Experimental Analysis of Prestressed Approach Slab Behavior ) |
| ¹ÚÈñ¹ü;¾öÀμ·;±è¼º¹Î; °æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;°æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;°æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
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| º» ¿¬±¸´Â ÇÁ¸®½ºÆ®·¹½º°¡ µµÀÔµÈ Á¢¼Ó½½·¡ºê(Single-PTAS: Single Post-Tensioned Approach Slab)ÀÇ ±äÀå·Â µµÀÔ¿¡ µû¸¥ °Åµ¿°ú ȯ°æÇÏÁß¿¡ ´ëÇÑ °Åµ¿À» ºÐ¼®Çϱâ À§ÇÏ¿© ½ÃÇè½Ã°ø ÇöÀå¿¡¼ ½ÇÇèÀ» ÅëÇØ ¼öÇàµÇ¾ú´Ù. ½ÇÇèÀ» À§ÇØ ¿ÂµµÃøÁ¤¼¾¼¸¦ ½½·¡ºêÀÇ ±íÀÌ¿¡ µû¶ó ÀåÂøÇÏ¿´À¸¸ç, º¯À§ÃøÁ¤°ÔÀÌÁö¸¦ ½½·¡ºêÀÇ ¿©·¯ À§Ä¡¿¡ ¼³Ä¡ÇÏ¿© ȯ°æÇÏÁß ¹× ±äÀå·Â µµÀÔ¿¡ µû¸¥ ½½·¡ºêÀÇ º¯À§ º¯È¸¦ 3Â÷¿øÀûÀ¸·Î ÃøÁ¤ÇÏ¿´´Ù. ½ÇÇè°á°ú Á¢¼Ó½½·¡ºê´Â ±æÀ̰¡ ª¾Æ ±äÀå·Â µµÀÔ¿¡ ÀÇÇÑ ±Þ°ÝÇÑ Á¾¹æÇâ º¯À§ º¯È´Â °üÂûµÇÁö ¾Ê¾Ò´Ù. Á¢¼Ó½½·¡ºêÀÇ ±íÀ̺° ÀÏÀÏ ¿Âµµº¯È´Â ±íÀ̰¡ ¾à 35cmº¸´Ù ±íÀ» °æ¿ì¿¡´Â °ÅÀÇ ¹ß»ýÇÏÁö ¾Ê¾ÒÀ¸¸ç, ¼öÁ÷¿Âµµ±¸¹è´Â Á¢¼Ó½½·¡ºêÀÇ µÎ²²°¡ Å« ±³´ëºÎ±Ù¿¡¼´Â Æ÷Àå°ú ÀÎÁ¢ÇÏ´Â ºÎ±Ù¿¡¼ º¸´Ù ÀÛ¾ÆÁ³´Ù. Äøµ ½Ã ¼öÁ÷º¯À§ÀÇ º¯È ¾ç»ó ¹× Å©±â´Â ÃøÁ¤ ÁöÁ¡ÀÇ ¼öÁ÷¿Âµµ±¸¹è¿Í Á÷Á¢ÀûÀ¸·Î °ü°è°¡ ÀÖ¾ú´Ù. Single-PTASÀÇ °Åµ¿À» ºÐ¼®ÇÑ °á°ú ÄÜÅ©¸®Æ® Æ÷Àå ½½·¡ºê¿Í ¸Å¿ì À¯»çÇÑ °Åµ¿À» º¸¿´À¸¸ç, µû¶ó¼ Â÷·ûÇÏÁ߸¸À» °í·ÁÇÏ¿© ´Ü¼øº¸·Î ¼³°èÇϰí ÀÖ´Â Á¢¼Ó½½·¡ºê¿¡ Æ÷ÀåüÀÇ °³³äÀ» µµÀÔÇÑ ¼³°è¹æ¾ÈÀÇ Á¤¸³ÀÌ ÇÊ¿äÇÑ °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. |
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| This research was conducted to analyze the behavior of Single-PTAS (Single Post-Tensioned Approach Slab) under tensioning and environmental loads by performing field tests when the demonstration Single-PTAS was being constructed. The temperature measurement sensors were installed at different depths, and the displacements in the approach slab under environmental loads and tensioning were measured using displacement transducers. As an experimental result, an abrupt change in the longitudinal displacement due to tensioning was not observed. The daily temperature change in the approach slab was negligible where the depth is over about 35cm. The temperature gradient in the approach slab adjacent to bridge was smaller than that adjacent to pavement. The patterns and magnitudes of vertical displacements were directly related to the temperature gradient at the measuring location. The behavior of Single-PTAS was very similar to that of concrete pavement. Therefore, a new design methodology for approach slabs is needed to include the pavement concept and to overcome drawback of current design procedures based on the simple beam concept. |
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| Á¢¼Ó½½·¡ºê;ÇÁ¸®½ºÆ®·¹½º;Æ÷½ºÆ®ÅÙ¼Ç;¿Âµµ±¸¹è;ȯ°æÇÏÁß;Äøµ;approach slab;prestress;post-tension;temperature gradient;environmental load;curling; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.12, no.4, 2010³â, pp.157-164
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201014654457740)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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