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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.8, 2009³â, pp.57-64
µî°¡º¯ÇüÀ» ÀÌ¿ëÇÑ Å×ÀÌÅÍ ¸»¶ÒÀÇ ÁöÁö·Â »êÁ¤
( Estimation of Axial toad Capacity for Tapered Piles Using Equivalent Transformation )
Àü¼º³²;¼­°æ¹ü;¼Û¿øÁØ;ÀÌÁØÈ¯; ÄÚ¿À·Õ°Ç¼³(ÁÖ) Åä¸ñ»ç¾÷º»ºÎ;¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â µî°¡º¯ÇüÀ» ÀÌ¿ëÇϸç Å×ÀÌÆÛ ¸»¶ÒÀÇ ÁöÁö·ÂÀ» »êÁ¤ÇÏ´Â ¹æ¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. Áö¹ÝÁ¶°Ç°ú Å×ÀÌÆÛ°¢µµ¸¦ °í·ÁÇÏ¿© ÁöÁö·ÂÀ» »êÁ¤ÇÏ´ø ±âÁ¸ÀÇ ¹æ¹ý°ú ´Þ¸®, Å×ÀÌÆÛ¸»¶ÒÀÇ ÁöÁö·Â»êÁ¤½Ã ÄܰüÀÔ½ÃÇè °á°ú¸¦ Ȱ¿ëÇϵµ·Ï ÇÏ¿´´Ù. À̶§ Å×ÀÌÆÛ¸»¶ÒÀº µî°¡º¯ÇüÀ» ÀÌ¿ëÇÏ¿© ÇüŸ¦ ´Ü¼øÈ­ ½ÃÄ×À¸¸ç À̸¦ ÅëÇØ ½Ç¹«¿¡¼­ ºñ±³Àû ½±°Ô ÁöÁö·ÂÀ» »êÁ¤ ÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. Á¦¾ÈµÈ ¹æ¹ýÀÇ °ËÁõÀ» À§ÇØ ½Ç³»½ÃÇè°ú ÇöÀå½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ½Ç³»¸ðÇü½ÃÇè °á°ú·ÎºÎÅÍ ÃøÁ¤µÈ ±ØÇÑÁöÁö·Â°ú º» ¿¬±¸¿¡¼­ Á¦¾ÈµÈ ¹æ¹ý¿¡ ÀÇÇÑ ¿¹Ãø°ªÀ» ºñ±³ÇÑ °á°ú Ç¥ÁØÆíÂ÷´Â $0.05{sim}0.121$, COV´Â $0.04{sim}0.05$ÀÇ °ªÀ» º¸¿© ´ëüÀûÀ¸·Î À¯»çÇÑ °á°ú¸¦ º¸¿´À¸¸ç, ÇöÀå½ÃÇèÀº ¾à 2.5%ÀÇ ¿ÀÂ÷¸¦ º¸¿© ÃøÁ¤°ª¿¡ ±ÙÁ¢ÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ±× °á°ú Á¦¾ÈµÈ ÁöÁö·Â »êÁ¤¹ýÀº Å×ÀÌÆÛ¸»¶ÒÀÇ ÁöÁö·ÂÀ» ºñ±³Àû Á¤È®ÇÏ°Ô ¿¹ÃøÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
In this study, a method using equivalent transformation for estimation of the axial load capacity of tapered piles is proposed. While preexistent methods for estimating the axial load capacity of tapered piles have been based on the effect of soil state and taper angle, a new design method is proposed considering cone resistance $q_c$ and equivalent transformation in sand. Through tapered pile simplified by using equivalent transformation, a new method fur quick and easy estimation of the axial load capacity of tapered pile is proposed for practical use. In order to verify the proposed method, calibration chamber test and field test were conducted. In calibration chamber test, comparison of estimated axial load capacity with measured one showed that the standard deviation and COV (Coefficient Of Variation) of estimated $Q_t$ is $0.05{sim}0.121$, $0.04{sim}0.05$ respectively. For field test, axial load capacity by proposed method shows 2.5% under-estimation in comparison with measured value. As a result, it is found that proposed method produces satisfactory predictions for tapered piles.
 
Ű¿öµå
Axial load capacity;Cone resistance;Equivalent transformation;Tapered pile;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.8, 2009³â, pp.57-64
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200931559903669)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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