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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.10, 2008³â, pp.121-129
»çÁúÅä¿¡¼­ ÇöÀ埼³ ÆØÀ̱âÃÊÀÇ °Åµ¿Æ¯¼º
( The Behavior of In-situ Top Base foundation in Granular Soil )
±èÇй®;±èÂù±¹; ´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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º» ³í¹®¿¡¼­´Â ±âÁ¸ °øÀåÁ¦ÀÛ ÄÜÅ©¸®Æ® ÆØÀ̱âÃʰ¡ °®´Â ¹®Á¦Á¡µéÀ» ÇØ°á º¸¿ÏÇϱâ À§ÇØ °³¹ßµÈ ÇöÀ埼³ ÆØÀ̱âÃÊÀÇ °Åµ¿Æ¯¼ºÀ» °ËÅäÇϰíÀÚ, ÇöÀåÀçÇϽÃÇè °á°ú¸¦ ±Ù°Å·Î ÆØÀ̱âÃÊÀÇ ¼öÄ¡ÇØ¼® ¸ðµ¨¸µÀ» ÇÏ¿´À¸¸ç, ±¸¼ºµÈ ¼öÄ¡ÇØ¼® ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ±âÃÊÇü½Ä ¹× Çü»ó º¯È­¿¡ µû¸¥ °Åµ¿Æ¯¼ºÀ» ºñ±³ ºÐ¼®ÇÏ¿´´Ù. ¼öÄ¡ÇØ¼® °á°ú, ÇöÀ埼³ ÆØÀ̱âÃÊ (In-situ TBF)´Â Àü´ÜȰµ¿ÆÄ±«¸éÀÌ ´õ ±í°í ³Ð°Ô Çü¼ºµÇ¾î Áö¹ÝÆÄ±«¿¡ ´ëÇÑ ÀúÇ×·ÂÀÌ Áõ°¡ÇÏ°Ô µÇ°í, ÀÌ·Î ÀÎÇØ ÁöÁö·ÂÀÌ Çâ»óµÇ´Â °ÍÀ» È®ÀÎ ÇÒ ¼ö ÀÖ¾ú´Ù. ±âÃÊÀÇ Çü»ó¿¡ µû¸¥ È¿°ú´Â ¿øÃߺο¡ ÀÇÇÑ °Í º¸´Ù´Â ¸»¶ÒºÎ¿¡ ÀÇÇÑ È¿°ú°¡ ´õ Å« °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ¿øÃßºÎ¿Í ¸»¶ÒºÎ°¡ Á¶ÇյǾî ÀÌ·ç¾îÁø ÆØÀ̱âÃÊ Çü»óÀÌ °¡Àå Å« È¿°ú¸¦ ³ªÅ¸³»´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¸»¶ÒºÎÀÇ ±æÀ̸¦ Áõ°¡½ÃŰ¸é¼­ ÇØ¼®À» ¼öÇàÇÑ °á°ú, ÇöÀç »ç¿ëµÇ°í ÀÖ´Â ÆØÀ̱âÃʸ»¶ÒºÎÀÇ ±æÀ̰¡ È¿À²Àû Å©±â¶ó´Â °ÍÀ» È®ÀÎ ÇÒ ¼ö ÀÖ¾ú´Ù.
Numerical analysis for the in-situ top base foundation (In-situ TBF) was carried out in order to investigate the effect of bearing capacity and the load delivering mechanisms in granular soil. The input data for the numerical model was prepared from the result obtained from the plate load test and full size in-situ TBF field tests. According to the result of numerical analysis, the behavior of in-situ TBF showed that bearing capacity of the foundation increased by $50{sim}100%$ and settlement was reduced up to $1/2{sim}1/3$ comparing to other types foundation. The effect of cone-shaped part of the in-situ TBF was as important as pile part for the improvement of foundation stability. The variation of the length of pile part indicated that the present length was proved satisfactory in terms of effectiveness.
 
Ű¿öµå
Increasing bearing capacity;Numerical analysis;Restraining settlement;Top base foundation;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.10, 2008³â, pp.121-129
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200800557077763)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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