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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.1, 2010³â, pp.35-43
¿¬¾ÇÁö¹Ý¿¡ ½Ã°øµÈ ÆØÀ̸»¶Ò±âÃÊ(Top-Base)ÀÇ ÇÏÁß-ħÇÏ·® ºÐ¼®
( Load-Settlement Characteristics of Concrete Top-Base Foundation on Soft Ground )
±èÀ翵;Á¤»ó¼¶;±è¼ö°ü; ¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;(ÁÖ)¿¡½ºÆ®°Ç¼³;
 
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º» ¿¬±¸¿¡¼­´Â ¼öÄ¡ÇØ¼®°ú ÇöÀå°èÃøÀ» ¿¬°èÇÏ¿© ¾Ð¹Ð°ú ÀçÇÏÆøÀÇ ¿µÇâÀ» °í·ÁÇÑ ¿¬¾àÁö¹Ý »ó ÆØÀ̸»¶Ò±âÃÊÀÇ ÃÖÀû ħÇÏ·®À» Æò°¡ÇÏ¿© ±âÁ¸ÀÇ Ä§ÇÏ·® »êÁ¤¹ýÀ» ¼öÁ¤ÇÑ»êÁ¤ ±â¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. ÆØÀ̱âÃʰø¹ýÀÌ Àû¿ëµÇ´Â ¿¬¾àÁö¹Ý(Á¡¼ºÅä, »çÁúÅä)À» ¼±Á¤Çϰí, 3Â÷¿ø À¯ÇÑ¿ä¼ÒÇØ¼®À» ÅëÇØ ÇöÀç ÆØÀ̱âÃʰø¹ý¿¡¼­ °í·ÁÄ¡ ¸øÇÏ´Â ¾Ð¹Ð°ú ÀçÇÏÆøÀÇ ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù. ºÐ¼® °á°ú, $7 imes7$ ÀÌ»óÀÇ ÆØÀ̹迭À» °¡Áö´Â °æ¿ì, ÀçÇÏÆøÀÇ Áõ°¡¿¡ µû¶ó ¿µÇâ±íÀ̰¡ ´õ ÀÌ»ó Áõ°¡ÇÏÁö ¾Ê´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÌ ¶§, ÆØÀ̸»¶Ò 1°³ÀÇ Æø BT(=0.5m)¿¡¼­, ÃÖ´ë ¿µÇâ±íÀÌ´Â Á¡¼ºÅäÁö¹ÝÀÇ °æ¿ì¿¡ 28BT Á¤µµ¸¦ º¸¿´À¸¸ç, »çÁúÅäÁö¹ÝÀº ÃÖ´ë $18B_T$·Î ³ªÅ¸³µ´Ù. º» ¿¬±¸ °á°ú, ÇöÀç ÀçÇÏÆø°ú ¾Ð¹ÐÀÇ ¿µÇâÀ» °í·ÁÇÏÁö ¸øÇÏ´Â ÆØÀ̱âÃÊ Ä§ÇÏ·® »êÁ¤½ÄÀº ½ÇÁ¦ °èÃø ħÇÏ·®°ú ºñ±³ÇÏ¿© ¾à 2¹è ÀÌ»ó °ú´ÙÇÏ°Ô »êÁ¤Çϰí ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. À̸¦ ¹ÙÅÁÀ¸·Î ¿¬¾à ´ÜÀÏÁö¹Ý¿¡ µû¸¥ bilinear ÇüÅÂÀÇ ¿µÇâ±íÀÌ »êÁ¤½Ä°ú ÇÏÁߺл갢À» Á¦¾ÈÇÏ¿´°í, À̸¦ ÅëÇØ »êÁ¤µÈ ħÇÏ·®Àº ½ÇÁ¦ ħÇÏ·®°ú ºñ±³Àû À¯»çÇÏ°Ô ³ªÅ¸³ª ±¹³» ÇöÀåÁ¶°ÇÀ» ÀûÀýÈ÷ ¹Ý¿µÇÒ ¼ö ÀÖÀ½À» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.
The behavior of the Top-Base foundation was investigated by carrying out 3D finite element method. Special attention is given to the settlement behavior of concrete Top-Base foundation due to the consolidation settlement of the embedding depth and the effect of footing dimensions which are not included in the practical design. To obtain the detailed informations, a series of numerical analyses were performed for different pile configurations. It is shown that as the number of piles in a group increases, the calculated settlement also increases. However, for the $7 imes7$ group, there is no further increase in settlement. Based on this study, it is found that the total settlement of Top-Base foundation is highly influenced by the consolidation settlement and footing configurations. It is also found that the current design method overestimates the settlement, and thus, needs to be modified and supplemented.
 
Ű¿öµå
3D finite element method;Consolidation settlement;Embedding depth;Footing configurations;Soft ground;Top-Base method;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.1, 2010³â, pp.35-43
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201015939077228)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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