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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.189-197
»çÁúÅäÁö¹Ý¿¡¼­ Æó»öÈ¿°ú¸¦ °í·ÁÇÑ °³´Ü¸»¶ÒÀÇ ÁöÁö·Â »êÁ¤ (I) - »õ·Î¿î ÁöÁö·Â »êÁ¤½ÄÀÇ °³¹ß-
( Estimation of Bearing Capacity for Open-ended Pile in Sands Considering Soil Plugging (I) -Development of New Design Equation- )
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°³´Ü¸»¶ÒÀÇ ÁöÁö·ÂÀº ¸»¶ÒÀÇ Æó»öÁ¤µµ¿¡ ¿µÇâÀ» ¹ÞÀ¸¸ç, ÀÌ·¯ÇÑ Æó»öÁ¤µµ´Â °ü³»ÅäÁõºÐºñÀÎ IFR¿¡ ÀÇÇÏ¿© Á¤·®È­ µÉ ¼ö ÀÖ´Ù. ±×·¯³ª ¸»¶ÒÀÇ Æó»öÁ¤µµ°¡ ¸»¶ÒÀÇ ÁöÁö·Â¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¤È®ÇÏ°Ô °í·ÁÇÏ´Â °³´Ü¸»¶ÒÀÇ ÁöÁö·Â »êÁ¤±âÁØÀÌ ÇöÀç±îÁö ¾ø´Â ½ÇÁ¤ÀÌ´Ù. µû¶ó¼­ ¸»¶ÒÀÇ Æó»öÁ¤µµ°¡ ÁöÁö·Â¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇϱâ À§ÇÏ¿© °èÃø±â°¡ ºÎÂøµÈ ¸ðÇü °³´Ü¸»¶Ò°ú °¡¾ÐÅäÁ¶¸¦ ÀÌ¿ëÇØ¼­ ¸ðÇü¸»¶Ò½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ½ÃÇè°á°ú °³´Ü¸»¶ÒÀÇ IFRÀº ¸»¶ÒÀÇ °üÀÔ±íÀÌ¿¡ ´ëÇÑ °ü³»Å䱿ÀÌÀÇ ºñ·Î Á¤ÀǵǴ °ü³»Å䱿À̺ñ(PLR)·ÎºÎÅÍ ¿¹ÃøÀÌ °¡´ÉÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ±×¸®°í °³´Ü¸»¶ÒÀÇ ¼±´Ü ÁöÁö·Â°ú Áָ鸶Âû·ÂÀº ¸»¶ÒÀÇ IFRÀÌ Áõ°¡ÇÔ¿¡ µû¶ó °¨¼ÒÇÏ´Â °æÇâÀ» º¸¿´´Ù. ¶ÇÇÑ ÀÌ¿Í °°Àº ¸ðÇü¸»¶Ò½ÃÇèÀÇ °á°ú¿¡ ±Ù°ÅÇÏ¿© °³´Ü¸»¶ÒÀÇ ¼±´ÜÁöÁö·Â°ú Áָ鸶Âû·ÂÀ» »êÁ¤ÇÒ ¼ö ÀÖ´Â »õ·Î¿î ÁöÁö·Â»êÁ¤½ÄÀÌ Á¦¾ÈµÇ¾ú´Ù.
The bearing capacity of open-ended piles is affected by the degree of soil plugging, which is quantified by the incremental filling ratio, IFR. There is not at present a design criterion for open-ended piles that explicitly considers the effect of IFR on pile load capacity. In order to investigate this effect, model pile load tests using a calibration chamber were conducted on instrumented open-ended piles. The results of these tests show that the IFR can be estimated from the plug length ratio PLR, which is defined as the ratio of soil plug length to pile penetration depth. The unit base and shaft resistances decrease with increasing IFR. Based on the results of the model pile tests, new design equations for calculating base load capacity and shaft load capacity of open-ended piles are proposed.
 
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Bearing capacity;Calibration chamber test;Chamber size effect;Incremental filling ratio;New design equation;Open-ended pile;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.189-197
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921342066)
¾ð¾î : Çѱ¹¾î
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