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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.11, 2009³â, pp.75-86
±¸Á¶¹° ±âÃÊÇÏÁß ÀÛ¿ë½Ã Áö¿À±×¸®µå º¸°­ ¼â¼®¸»¶ÒÀÇ ÇÏÁßÁöÁö Ư¼º¿¡ °üÇÑ ¼öÄ¡ÇØ¼® ¿¬±¸
( Numerical Investigation of Load Carrying Capacity of Geogrid-Encased Stone Columns under Foundation Load )
À¯Ãæ½Ä; ¼º±Õ°ü´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;
 
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º» ³í¹®¿¡¼­´Â ¼â¼®¸»¶ÒÀÇ ÇÏÁß ÁöÁö·Â Çâ»óÀ» À§ÇØ Áö¿À±×¸®µå¸¦ ÀÌ¿ëÇÏ¿© ÁÖ¸éÀ» °¨½Î´Â Àϸí "Áö¿À±×¸®µå º¸°­ ¼â¼®¸»¶Ò"ÀÇ ÇÏÁßÁöÁöƯ¼º¿¡ °üÇÑ ³»¿ëÀ» ´Ù·ç¾ú´Ù. À̸¦ À§ÇØ Áö¿À±×¸®µå °¨½Ó ¼â¼®¸»¶ÒÀÇ ±Ùº»ÀûÀÎ ±â´ÉÀÎ ¹è¼ö È¿°ú¿Í Áö¿À±×¸®µå º¸°­ È¿°ú¸¦ Çö½ÇÀûÀ¸·Î ¸ð»çÇÒ ¼ö ÀÖ´Â 3Â÷¿ø ÀÀ·Â-°£±Ø¼ö¾Ð ¼öÄ¡ÇØ¼® ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ÀçÇÏÇÏÁß¿¡ ´ëÇÑ ´Ù¾çÇÑ ½Ã°øÁ¶°Ç¿¡ ´ëÇÑ ¸Å°³º¯¼ö ÇØ¼®À» ¼öÇàÇÏ°í ±× °á°ú¸¦ ºÐ¼®ÇÏ¿´´Ù. ±× °á°ú, ±âÁ¸ÀÇ ¿¬±¸¿¡¼­ ¹ßÇ¥µÈ ¼ºÅä ÇÏÁß Á¶°Ç¿¡¼­ È®ÀÎÇÒ ¼ö ÀÖ¾ú´ø Àå±â ÇÏÁßÁöÁö·Â Çâ»ó È¿°ú¿Í À¯»çÇÏ°Ô ÀçÇÏÇÏÁß Á¶°Ç¿¡¼­µµ ÁöÁö·ÂÀÌ ÇöÀúÈ÷ Çâ»óÇÏ´Â °á°ú¸¦ È®ÀÎÇÒ ¼ö ÀÖ¾î Áö¿À±×¸®µå º¸°­ ¼â¼®¸»¶Ò °ø¹ýÀº ¿¬¾àÁö¹Ý ¼ºÅä½Ã Àû¿ë¼º »Ó¸¸ ¾Æ´Ï¶ó ±¸Á¶¹° ±âÃʷεµ Ȱ¿ë¼ºÀ» È®º¸ÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î °ËÅä µÇ¾ú´Ù. ÇØ¼® °á°ú´Â Áö¿À±×¸®µå º¸°­ ¼â¼®¸»¶ÒÀÇ ÇÏÁßÁöÁö·Â°ú ¿µÇâ ÀÎÀÚ°£ÀÇ °ü°è ¼³Á¤ÀÌ °¡´ÉÇϵµ·Ï Á¦½ÃÇÏ¿´À¸¸ç ÇöÀåÀû¿ë¼º Ãø¸é¿¡¼­ÀÇ °íÂûÀ» ½ÃµµÇÏ¿´´Ù.
This paper presents the results of a numerical investigation on load carrying capacity of geogrid-encased stone columns to use as load carrying column(s) supporting a foundation load. A validated 3D stress-pore pressure coupled model that can effectively show rapid drainage capability of stone columns and encasement effect of geogrid was adopted and a parametric study was carried out on a number of influencing factors. It is shown that the geogrid encased stone columns can be effectively used as foundation load supporting columns in soft ground. The results of numerical investigation were presented so that the relationship between the load carrying capacity of geogrid-encased stone columns and the influencing factors can be identified. Practical implications of the findings are also discussed.
 
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Finite element method;Foundation;Geogrid;Load carrying capacity;Soft ground;Stone column;Stress-pore pressure coupled analysis;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.11, 2009³â, pp.75-86
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200908856855993)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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