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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.11, 2010³â, pp.99-110
ÇöÀå °èÃø »ç·Ê¸¦ ÅëÇÑ ´Üµ¶ ¸»¶ÒÀÇ Áָ鸶Âû°è¼ö($alpha$, $eta$ °è¼ö) ¿ª»êÁ¤
( Back-calculation of Skin Friction Coefficient ($alpha$, $eta$) on a Single Pile by Long-Tenn Field Monitoring )
°íÁØ¿µ;±è¿µÈ£;ÃÖ¿ë±Ô;Á¤»ó¼¶; ¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;°æ¼º´ëÇб³ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;
 
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¿¬±¸¿¡¼­´Â ºÎÁָ鸶Âû·ÂÀÌ ¹ß»ýÇÏ´Â 3°³ Áö¿ª ÃÑ 16º» ¸»¶ÒÀÇ ÇöÀå °èÃø ÀÚ·áµéÀ» ¹ÙÅÁÀ¸·Î ±¹³» Áö¹Ý Ư¼º¿¡ ¸Â´Â Áָ鸶Âû°è¼ö($alpha$, $eta$ °è¼ö)ÀÇ ºÐÆ÷¹üÀ§¸¦ ¾Ð¹Ðµµ(U)¿Í ¿ªÃ»Àç(S.L) µµÆ÷ À¯¹«¿¡ µû¶ó ¿ª»êÁ¤ÇÏ¿´´Ù. ¿ªÃ»Àç µµÆ÷ ¸»¶ÒÀÇ ºÎÁָ鸶Âû·Â Àú°¨È¿°ú´Â 50~90% Á¤µµÀÎ °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ±âÁ¸ ¼³°è¿¡ »ç¿ëµÇ´ø Á¦¾È °ª°úÀÇ ºñ±³¸¦ ÅëÇØ, º» ¿¬±¸¿¡¼­ »êÁ¤µÈ $alpha$¿Í $eta$°è¼ö°¡ ÀûÁ¤ ¹üÀ§¿¡ ÀÖÀ¸¸ç, ±× °á°ú ±¹³»Áö¹ÝÁ¶°ÇÀ» ¹Ý¿µÇÑ ¸»¶ÒÀÇ Àå, ´Ü±â Áָ鸶Âû·ÂÀ» ¿¹ÃøÇÒ ¼ö ÀÖ´Â ±âº»ÀڷḦ Á¦½ÃÇÏ¿´´Ù.
A fundamental study of the pile-soil systems subjected to negative skin friction in soft soil was conducted using the long-term field measurements. The emphasis was on the identification of the magnitude and distribution of skin frictions ($alpha$ and $eta$ coefficients) in bitumen coated and uncoated piles. A skin friction coefficient of instrumented piles is back-calculated by varying degrees of consolidation (U) of surrounding soils. It is shown that the bitumen coated pile is capable of reducing the negative skin friction up to almost 50 to 90 percents. Through comparisons with the existing friction coefficient values ($alpha$ and $eta$ coefficients), the calculated coefficients are within the appropriate range, and thus we can suggest basic materials to estimate the realistic pile behavior in the short-term and long-term analysis.
 
Ű¿öµå
$alpha$ and $eta$ coefficient;Bitumen coating;Degree of consolidation;Long-term and short-term analysis;Negative skin friction;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.11, 2010³â, pp.99-110
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201012259056649)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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