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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.4, 2007³â, pp.169-183
¿¬¾ÇÁö¹ÝÀÇ ¼â¼®´ÙÁü¸»¶Ò¿¡ ´ëÇÑ °Åµ¿ ºÐ¼® (I)
( The Behavior of Rammed Aggregate Piers (RAP) in Soft Ground (I) )
¹è°æÅÂ;ÀÌÁ¾±Ô; ´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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¼â¼®´ÙÁü¸»¶ÒÀ¸·Î º¸°­µÈ ¿¬¾àÁö¹Ý »ó ±âÃÊÁö¹ÝÀÇ Ä§ÇÏÆ¯¼º°ú ÇÏÁߺдãÈ¿°ú¸¦ ±¸¸íÇϱâ À§ÇÏ¿© ¸»¶Ò°ú Áö¹ÝÀÇ °æ°è¸é Á¶°Ç, ġȯÀ², Çü»óºñ ¹× »óÀçÇÏÁß µîÀ» °í·ÁÇÏ¿© ¸»¶ÒÀÇ ÀԷ¹°¼ºÄ¡ »êÁ¤À» À§ÇÑ ÇöÀåÀçÇϽÃÇè°ú ¼öÄ¡ÇØ¼®À» ¼öÇàÇÏ¿´°í º» ¿¬±¸ÀÇ ÇØ¼®°á°ú¿Í ºñ±³, °ËÁõÇϱâ À§ÇÏ¿© ÇöÀå¿øÇü(prototype)½ÃÇèÀ» ÁøÇà Áß¿¡ ÀÖ´Ù. ¾Æ¿ï·¯ ±âÁ¸ÀÇ SCP¿¡ ´ëÇÑ Åº¼º ÇÏÁßÀüÀÌ ÀÌ·ÐÀ» º¸Á¤ÇÏ¿© ¼öÁ¤½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. ÇØ¼®°á°ú ¿¬¼º±âÃÊ¿¡ ¼³Ä¡µÈ ¼â¼®´ÙÁü¸»¶ÒÀÇ °æ¿ì °­¼º±âÃʿʹ ´Ù¸£°Ô °æ°è¸é Á¶°Ç¿¡ µû¶ó Å©°Ô ¿µÇâÀ» ¹ÞÀ¸¸ç ħÇÏÆ¯¼ºÀº ÀÚÀ¯º¯Çü·ü(free strain)·Î ÀÎÇÏ¿© ¸»¶ÒÀº °¨¼ÒÇϰí ÁÖº¯Áö¹ÝÀº Áõ°¡ÇÏ´Â °æÇâÀ» º¸¿´À¸¸ç ÀÀ·ÂÁýÁߺñ´Â ¸»¶Ò ÇϺηΠ³»·Á°¨¿¡ µû¶ó Áõ°¡ÇÏ¿´´Ù. ¶ÇÇÑ Ä¡È¯À²°ú Çü»óºñ Áõ°¡¿¡ µû¶ó ÃÖ´ë ÀÀ·ÂÁýÁߺñ°¡ Áõ°¡Çϳª ¾î´À ÇѰè À̻󿡼­´Â ¼ö·ÅµÇ¾ú°í °íġȯÀ²°ú ±ä ¸»¶Ò¿¡¼­´Â »óÀçÇÏÁß Áõ°¡¿¡ µû¸¥ ¿µÇâÀ» Å©°Ô ¹Þ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Numerical analysis was performed to investigate the behavior of rammed aggregate piers (RAP) in soft ground with various interface conditions, area replacement ratio, aspect ratio and surcharge loads of pile and soil. And field modulus load test was carried out to predict the input parameters. Field prototype (unit cell) tests are in progress to compare the result of numerical analysis. Also a modified load transfer equation of RAP on soft foundation was proposed. According to the results, the behavior of RAP depended on such as interface conditions, settlement characteristics (free strain) and stress concentration ratio. On the other hand, maximun stress concentration ratio increased as area replacement ratio and aspect ratio increased, and it was remarkably affected by surcharge loads.
 
Ű¿öµå
Field modulus load test;Free strain;Numerical analysis;Rammed aggregate piers;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.4, 2007³â, pp.169-183
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200718411577299)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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