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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.3, 2004³â, pp.85-96
Á¡ÅäÃþÀ§ÀÇ ¸ð·¡Áö¹Ý¿¡ À§Ä¡ÇÑ ¾èÀº ±âÃÊÀÇ ÁöÁö·Â¿¡ ´ëÇÑ »óÇÑ ÇѰèÇØ¼®
( Upper Bound Limit Analysis of Bearing Capacity for Surface Foundations on Sand Overlying Clay )
±è´ëÇö;¾ß¸¶¸ðÅäÄËŸ·Î; ¹Ì±¹ ÀÎµð¾Æ³ªÁÖ µµ·Î±¹ ¿¬±¸¼Ò Áö¹Ý°øÇÐ;ÀϺ»°¡°í½Ã¸¶´ëÇб³;
 
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º» ¿¬±¸´Â Á¡ÅäÃþÀ§ÀÇ ¸ð·¡Áö¹Ý¿¡ À§Ä¡Çϴ ǥ¸é±âÃÊÀÇ ±ØÇÑÁöÁö·Â¿¡ ´ëÇØ ÀÌ·ÐÀûÀ¸·Î Á¶»çÇÏ¿´´Ù. ½Ç¿ëÀûÀÎ Àû¿ëÀ» À§ÇÏ¿© Ç¥¸é±âÃÊÀÇ ÁöÁö·Â¿¡ °üÇÑ ¿¬±¸µé¿¡ ´ëÇÑ °ËÅä¿Í ³íÀǰ¡ Á¦½ÃµÇ¸ç, ÇѰèÇØ¼®(Limit Analysis)ÀÇ ¿îµ¿ÇÐÀû Á¢±Ù¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© Á¤ÇØÀÇ ±ØÇÑ ÁöÁö·ÂÀÌ °è»êµÇ¾ú´Ù. ¿îµ¿ÇÐÀû ÇØ´Â »óÇѰªÀ̸ç ÇØÀÇ Á¤È®¼ºÀº ÆÄ±«¸ÞÄ«´ÏÁòÀÇ Çü»ó¿¡ ´Þ·Á ÀÖ´Ù. ÀÌ·¯ÇÑ ¹æ¹ýÀº ¼³°èµµÇ¥¸¦ ¸¸µå´Âµ¥ Æí¸®ÇÒ »Ó¸¸ ¾Æ´Ï¶ó ¹°¼ºÄ¡ÀÇ ¿µÇâÀ» ÃßÁ¤ÇÒ ¼ö ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ¹ü¿ë À¯ÇÑ¿ä¼ÒÇØ¼® ÇÁ·Î±×·¥ÀÎ ABAQUS¸¦ »ç¿ëÇÏ¿© ź¼Ò¼º À̷п¡ ±Ù°ÅÇÏ¿© ±ØÇÑÁöÁö·ÂÀ» °è»êÇÏ¿´´Ù. ¿îµ¿ÇÐÀû ¹æ¹üÀ¸·Î °è»êµÈ °á°ú¿Í À¯ÇÑ¿ä¼Ò ÇØ¼®, ÇѰèÆòÇü·Ð¿¡ ±Ù°ÅÇÑ ¸î¸î ¾Ë·ÁÁø ½Äµé(Yamaguchi, Meyerhof¿Í Okamura µî)¿¡ ÀÇÇÑ °á°ú¸¦ ºñ±³ÇÏ¿´´Ù. ¾Æ¿ï·¯, ¿îµ¿ÇÐÀû ¹æ¹ý¿¡ ÀÇÇÑ Á¦¾È½Ä°ú À¯ÇÑ¿ä¼ÒÇØ¼® °á°ú¿Í ÇѰèÆòÇüÇØ¼® °á°úÀÇ À¯È¿¼º¿¡ ´ëÇÏ¿© °ËÁõÇÏ¿´´Ù.
The ultimate bearing capacity of surface foundations on a sand layer overlying clay has been theoretically investigated. First, a review of previous studies on the bearing capacity problems for this type of foundation was performed and a discussion was presented concerning the practical application. Second, the kinematic approach of limit analysis was used to calculate the upper bound of the true ultimate bearing capacity. The kinematic solutions are upper bounds and their accuracy depends primarily on the nature of the assumed failure mechanism. This approach makes it convenient to create design charts, and it is possible to trace the influence of parameters. Third, the commercial finite element program ABAQUS was applied to obtain the ultimate bearing capacity based on the elasto-plastic theory. Results obtained from the kinematic approach were compared with those from the program ABAQUS and the limit equilibrium equations proposed by Yamaguchi, Meyerhof and Okamura et al. Finally, the validities of the results from the kinematic approach, the results from the program ABAQUS and the limit equilibrium equations were examined.
 
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Bearing capacity;Finite element method;Foundations;Limit analysis;Limit equilibrium method;Sand overlying clay;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.3, 2004³â, pp.85-96
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922341599)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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