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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.11, 2006³â, pp.113-122
PHC ¸»¶ÒÀÇ ÇÏÁßÀüÀ̽ÇÇèÀ» ÅëÇÑ Âü ÁöÁö·ÂÀÇ »êÁ¤
( Determination of True Resistance from Load Transfer Test Performed on a PHC Pile )
±è¼º·Ä;Á¤¼º±³;; µ¿¾Æ´ëÇб³ Åä¸ñ°øÇкÎ;µ¿¾Æ´ëÇб³ Åä¸ñ°øÇкÎ;µ¿¾Æ´ëÇб³ Åä¸ñ°øÇкÎ;
 
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±¹³»¿¡¼­ ¸»¶Ò Á¤ÀçÇÏ ½ÇÇèÀÌ ¼ö¸¹ÀÌ ¼öÇàµÇ°í ÀÖÁö¸¸, ±× °á°úÀÇ È°¿ëµµ°¡ ³·¾Æ¼­ ÀçÇϽÇÇè ¹æ¹ý°ú ºÐ¼®¹æ¹ý µî¿¡ ´ëÇÏ¿© Àç°íÇÒ Çʿ伺ÀÌ Á¦±âµÇ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â µÎÅÍ¿î ¿¬¾àÁö¹Ý ÇϺÎÀÇ ¸ð·¡Ãþ¿¡ PHC ¸»¶Ò ¼±´ÜÀ» ÁöÁö½ÃŲ ÈÄ ÇÏÁßÀüÀÌ Á¤ÀçÇÏ ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ¸»¶ÒÀÇ ¼³Ä¡ ÀÌÈÄ¿¡ Àå±â°£¿¡ °ÉÃÄ ÁÖ¸é ¸¶Âû·ÂÀ» ÃøÁ¤ÇÏ¿´À¸¸ç, ±¹³»¿¡¼­ º¸ÆíÀûÀ¸·Î Àû¿ëµÇ°í ÀÖ´Â ÀçÇϹý°ú´Â ´Ù¸¥ ±Þ¼ÓÀçÇϹý¿¡ ÀÇÇÏ¿© Á¤ÀçÇϽÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù ±× ½ÇÇè°á°ú¸¦ ÀÌ¿ëÇÏ¿© ¸»¶ÒÀÇ Åº¼º°è¼ö, ÀÜ·ùÀÀ·Â ¹× Âü ÁöÁö·ÂÀ» »êÁ¤ÇÏ¿´´Ù. °á°úÀûÀ¸·Î, ÀçÇϽÇÇè Àü¿¡ ¸»¶Ò¿¡ Á¸ÀçÇÏ´Â ÀÜ·ùÇÏÁßÀÌ ÁÖ¸é ¸¶Âû·Â°ú ¼±´ÜÁöÁö·Â¿¡ Å©°Ô ¿µÇâÀ» ¹ÌÄ£´Ù´Â »ç½ÇÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ, Á¡¼ºÅä Áö¹Ý¿¡¼­ÀÇ Àå´ë¸»¶Ò¿¡ ´ëÇØ¼­´Â Áö¹ÝÀÇ °­µµÈ¸º¹(setup) È¿°ú°¡ ¸Å¿ì Å©´Ù´Â »ç½ÇÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
Although a number of static pile load tests have been performed in this country, re-consideration on the interpretation and loading method is needed, because of their less usefulness in practice. For this study, a static loading testing was performed for a long instrumented PHC pile, which was installed in sand layer overlying thick soft clay. The shaft resistance of the pile had been monitored for a long time after installation, and then the static load testing was performed by the quick load test, unlike the recent Korean practice. Using the measured data, the elastic modulus of pile, residual stress and true resistance on the pile were determined. In the event, it was found that the residual stress on the pile, which remained prior to the static loading, significantly affects the shaft and toe resistances. Also, it was realized that the setup effect for the long pile is significant.
 
Ű¿öµå
PHC pile;Soft clay;Static load test;True resistance;Load transfer;Residual stress;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.11, 2006³â, pp.113-122
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200604623520253)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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