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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.3, 2003³â, pp.65-74
ÇÏÇâ·ÂÀ» ¹Þ´Â ¸»¶Ò-Áö¹Ý Á¢Ã˸éÀÇ ½½¸³ È¿°ú
( Slip Effect at the Pile-soil Interface on Dragload )
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º» ¿¬±¸¿¡¼­´Â ¸»¶ÒÀÌ ±ÙÀÔµÈ ¿¬¾àÁö¹ÝÀÇ Åº¼Ò¼º ÇØ¼®À» ¼öÇàÇÏ¿© ¸»¶Ò¿¡ ÀÛ¿ëÇÏ´Â ÇÏÇâ·ÂÀ» »êÁ¤ÇÏ¿´´Ù. À̶§ ´Üµ¶¸»¶Ò°ú ±º¸»¶Ò(3$ imes$3, 5$ imes$5)À» ´ë»óÀ¸·Î °¢°¢ 2Â÷¿ø°ú 3Â÷¿ø À¯ÇÑ¿ä¼ÒÇØ¼®À», ¸»¶ÒÁָ鿡¼­ slipÀÇ À¯¹«¿¡ µû¶ó ¼öÇàÇÏ¿© ±× ¿µÇâÁ¤µµ¸¦ ÆÄ¾ÇÇÏ¿´´Ù. ÇÏÇâ·ÂÀÇ ¹ß»ýÁ¤µµ´Â ¸»¶ÒÁָ鿡¼­ÀÇ ¸¶Âû°è¼ö, ÁöÇ¥¸é°ú ¸»¶ÒµÎºÎ¿¡ ÀÛ¿ëÇÏ´Â »óÀçÇÏÁß¿¡ Å« ¿µÇâÀ» ¹Þ´Â´Ù. ÀÌ¿Í °°Àº ¿µÇâÀÎÀÚ¸¦ Åä´ë·Î ¼öÄ¡ÇØ¼® °á°ú, ÇÏÇâ·ÂÀº no-slipÀÇ °æ¿ì°¡ slipÀÇ °æ¿ì¿¡ ºñÇØ¼­ »ó´çÈ÷ °ú´ëÇÏ°Ô »êÁ¤µÇ¾úÀ¸¸ç, ¶ÇÇÑ ¸»¶ÒµÎºÎ¿¡ ÇÏÁßÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ÇÏÇâ·ÂÀº °¨¼ÒÇÏ´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ÇÑÆí ±×·ìÈ¿°ú°¡ ÀÖ´Â ±º¸»¶ÒÀÇ ÇÏÇâ·ÂÀº ´Üµ¶¸»¶ÒÀÇ ÇÏÇâ·Â¿¡ ºñÇØ¼­ Å©°Ô °¨¼Ò ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ¼öÄ¡ ¹× »ç·ÊºÐ¼®À» ÅëÇØ slip ÇØ¼®ÀÇ ÀûÀýÇÔÀ» È®ÀÎÇÏ¿´´Ù.
The dragload on pile groups in consolidating ground was investigated based on a numerical analysis. The case of a single pile and subsequently the response of groups were analyzed by 2D and 3D finite element studies. Conventional continuum elements and special slip elements were used in the analyses for comparison. Based on a limited parametric study, it is shown that dragload for a single pile and group effect are normally overestimated by continuum analyses, compared with the predictions by the slip analyses. The group effect was examined from the slip analysis by considering various factors such as pile configurations, surface loading, interface friction coefficient, and axial loading on piles. An examplary analysis and one previous experimental observation of dragload and group effects were back-analysed. The case histories demonstrated that the slip analysis might predict a better estimate of dragload and group effect compared to the no-slip continuum analysis.
 
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Continuum analysis;Dragload;Group effect;Numerical analysis;Pile groups;Slip analysis;Slip effect;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.3, 2003³â, pp.65-74
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921763563)
¾ð¾î : ¿µ¾î
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