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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.12, 2008³â, pp.33-40
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À¯ÇÑ¿ä¼ÒÇØ¼®À» ÅëÇÑ ¾Ï¹Ý¿¡ ±ÙÀÔµÈ ÇöÀ埼³¸»¶ÒÀÇ ÇÏÁßÀüÀ̰ŵ¿ ºÐ¼®
( FE Analysis of Rock-Socketed Drilled Shafts Using Load Transfer Method ) |
| ¼³ÈÆÀÏ;Á¤»ó¼¶;±è¿µÈ£; ¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;
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| º» ¿¬±¸¿¡¼´Â À¯ÇÑ¿ä¼ÒÇØ¼®À» ÀÌ¿ëÇÏ¿© ¾Ï¹Ý¿¡ ±ÙÀÔµÈ ÇöÀ埼³¸»¶ÒÀÇ ¸»¶Ò-Áö¹Ý »óÈ£ÀÛ¿ëÁï, Áö¹ÝÀÇ ¿¬¼Ó¼ºÀ» °í·ÁÇÑ ÇÏÁßÀüÀÌÇØ¼®À» ¼öÇàÇÏ¿´´Ù. À̸¦ À§ÇÏ¿© ÁÖ¸é ÇÏÁßÀüÀÌÇÔ¼ö¸¦ »ç¿ëÀÚ Á¤ÀÇÀÇ °æ°è¸é ¸ðµ¨(FRIC)·Î ±¸ÇöÇÏ¿© ¸»¶ÒÁö¹ÝÀÇ ¹Ì²ô·¯Áü °Åµ¿°ú ÇÏÁßÀüÀÌ °Åµ¿À» ¸ðµ¨¸µ ÇÏ¿´´Ù. º» ¿¬±¸°á°ú, Áָ鸶Âû·Â¿¡ ÀÇÇØ ¹ß»ýµÇ´Â ¼±´ÜħÇÏ·®À¸·Î ´ëº¯µÇ´Â Áö¹Ý ¿¬¼Ó¼º ¿µÇâÀº Áָ鸶Âû·ÂÀÌ ±ØÇÑ»óÅ·Πµµ´ÞÇÒ ¶§±îÁö Áõ°¡ÇÔÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, ¸»¶ÒÁ÷°æ°ú ¾Ï¹Ý°è¼öÀÇ ºñ(D/$E_{mass}$), ÀüüÇÏÁß¿¡¼ Áָ鸶Âû·ÂÀÇ ºñ($R_s$/Q)¿¡ ¿µÇâÀ» ¹Þ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÇöÀåÀçÇϽÃÇè »ç·Ê¿ÍÀÇ ºñ±³ºÐ¼® °á°ú, FRICÀ» ÀÌ¿ëÇÑ À¯ÇÑ¿ä¼ÒÇØ¼®¹æ¹ýÀº ¸»¶ÒÀÇ ÇÏÁßÀüÀÌ °Åµ¿°ú ¸»¶Ò-Áö¹Ý »óÈ£ÀÛ¿ë È¿°ú(coupling effect)¸¦ ÀûÀýÈ÷ ³ªÅ¸³¾ ¼ö ÀÖ¾úÀ¸¸ç, ¸»¶ÒÀÇ °Åµ¿À» ¿¹ÃøÇϴµ¥ Å©°Ô °³¼±µÇ¾úÀ½À» È®ÀÎÇÏ¿´´Ù. |
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| The load distribution and deformation of rock-socketed drilled shafts subjected to axial loads are evaluated by a load-transfer method. The emphasis is on quantifying the effect of coupled soil resistance in rock-socketed drilled shafts using the 2D elasto-plastic finite element analysis. Slippage and shear load transfer behavior at the pile-soil interface are investigated by using a user-subroutine interface model (FRlC). It is shown that the coupled soil resistance provides the influence of pile toe settlement as the shaft resistance is increased to an ultimate limit state. The results show that the coupling effect is closely related to the value of pile diameter over rock mass modulus (D/$E_{mass}$) and the ratio of total shaft resistance against total applied load ($R_s$/Q). Through comparisons with field case studies, the 2D numerical analysis reseanably presented load transfer of pile and coupling effect due to the transfer of shaft shear loading, and thus represents a significant improvement in the prediction of load deflections of drilled shafts. |
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| Ű¿öµå |
| Coupled soil resistance;Finite element analysis;Interface model;Load transfer analysis;Rock-socketed drilled shaft; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.12, 2008³â, pp.33-40
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200806942466050)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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