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Çѱ¹Áö¹Ý°øÇÐȸ / v.9, no.4, 1993³â, pp.7-16
¸ð·¡Áö¹Ý¿¡ ŸÀÔµÈ °³´Ü¸»¶ÒÀÇ °ü³»ÅäÁöÁö·Â »êÁ¤
( Computation of Plug Capacity for Open -Ended Piles Driven into Sands )
¹é±ÔÈ£;À̽·¡; Á¤È¸¿ø, Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;Á¤È¸¿ø, Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;
 
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Áö¹ÝÁ¶°ÇÀÌ °ü³»ÅäÀÇ ÁöÁö·ÂƯ¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ¾Ë¾Æº¸±â À§ÇÏ¿© ¿©·¯°¡Áö Á¶°ÇÀ» °®´Â ¸ð·¡Áö¹Ý¿¡ ŸÀÔµÈ °³´Ü¸»¶Ò¿¡ ´ëÇÏ¿© ÅäÁ¶½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ½ÇÇè¿¡¼­ »ç¿ëµÈ ¸ðÇü¸»¶ÒÀº ¸»¶ÒÀÇ ÁöÁö·ÂÀ» ¿ÜÁָ鸶Âû·Â°ú °ü³»ÅäÁöÁö·Â, ±×¸®°í ¸»¶Ò ´Ü¸éºÎÁöÁö·ÂÀÇ ¼¼°¡Áö·Î ºÐ¸® ÃøÁ¤ÇÒ ¼ö ÀÖµµ·Ï Á¦ÀÛÇÏ¿´´Ù. ¸î°¡Áö °¡Á¤ÇÏ¿¡ ½ÇÇè°á°ú·ÎºÎÅÍ °è»êµÈ °ü³»Åä ³»ºÎÀÇ Åä¾Ð°è¼ö´Â ¸»¶ÒÀÇ °üÀÔ±íÀÌ¿Í Áö¹ÝÀÇ »ó´ë¹Ðµµ°¡ Áõ°¡ÇÔ¿¡ µû¶ó °¨¼ÒÇϰí, Áö¹ÝÀÇ Ãʱ⠾йозÂÀÌ Áõ°¡ÇÒ¼ö·Ï Áõ°¡ÇÏ´Â °æÇâÀ» ³ªÅ¸³½´Ù. ¶ÇÇÑ Åä¾Ð°è¼ö´Â °ü³»ÅäÀÇ Çϴܺο¡ Á¢±ÙÇÒ¼ö·Ï Áõ°¡ÇÑ´Ù. °ü³»ÅäÀÇ 1Â÷¿ø ÇØ¼®À¸·ÎºÎÅÍ °è»êµÈ °ü³»ÅäÁöÁö·Â°ú ½ÇÃøÄ¡ÀÇ ºñ±³·ÎºÎÅÍ Randolphµî°ú O'Neillµî¿¡ ÀÇÇÏ¿© Á¦¾ÈµÈ P¸¦ ÀÌ¿ëÇÑ 1Â÷¿ø ÇØ¼®À̳ª APIÀÇ Ãßõ¹æ¹ýÀº °ü³»ÅäÁöÁö·ÂÀ» »ó´çÈ÷ °ú¼ÒÆò°¡ ÇÔÀ» ¾Ë ¼ö ÀÖ´Ù. µû¶ó¼­ ½ÇÇè°á°ú¿¡ ±Ù°ÅÇÏ¿© °ü³»ÅäÀÇ 1Â÷¿ø ÇØ¼®À» ÅëÇÑ °ü³»ÅäÁöÁö·ÂÀÇ ¿¹Ãø Á¤µµ¸¦ ³ôÀ̱â À§ÇÏ¿© 1Â÷¿ø ÇØ¼®¿¡ ÇÊ¿äÇÑ °ü³»ÅäÀÇ Åä¾Ð°è¼ö¸¦ »êÁ¤ÇÒ ¼ö ÀÖ´Â °æÇè½ÄÀÌ Á¦¾ÈµÇ¾úÀ¸¸ç, Á¦¾ÈµÈ ½ÄÀº ¸ðµç Áö¹ÝÁ¶°Ç¿¡ ´ëÇÏ¿© Àû´çÇÑ °ü³»ÅäÁöÁö·ÂÀ» »êÁ¤ÇÑ´Ù.
Calibration chamber tests were conducted on open -ended model piles driven into dried siliceous sands with different soil conditions in order to clarify the effect of soil conditions on plug capacity, The model pile used in the test series was devised so that the bearing capacity of an open -ended pile could be measured out into three components , outside shaft resistance. plug resistance and tip resistance. Under several assumption, the value of earth pressure coefficient in the soil plug is calculated. It is gradually reduced with increase in the longitudinal distance from the pile tip. At the bottom of soil plug, it tends to decrease with increase in the penetration depth and relative density, and to increase with the increase of ambient pressure. In comparison of measured and calculated plug capacities using the one -dimensional analysis, we note that API code and one -dimensional analysis combined with P suggested by Randolph et al. and O'Neill et al. result in great underestimation of the plug capacity. Therefore, based on the test results, an empirical equation was suggested to compute the earth pressured coefficient to be used in the calculation of plug capacity using the one -dimensional analysis. and it produces proper plug capacities for all soil conditions.
 
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.9, no.4, 1993³â, pp.7-16
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199311920445153)
¾ð¾î : Çѱ¹¾î
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