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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.5, 2007³â, pp.131-141
´ë½Éµµ ¿¬¾àÁö¹Ý¿¡¼­ Àå´ë PHC¸»¶ÒÀÇ Çן¿¡ µû¸¥ Áö¹Ý°ú ¸»¶Ò°Åµ¿
( Pile and Ground Responses during Driving of a Long PHC Pile in Deep Soft Clay )
±è¼º·Ä;;Á¤¼º±³; µ¿¾Æ´ëÇб³ Åä¸ñ°øÇаú;µ¿¾Æ´ëÇб³ Åä¸ñ°øÇаú;µ¿¾Æ´ëÇб³ Åä¸ñ°øÇаú;
 
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¸»¶Ò ±âÃÊÀÇ °Åµ¿Àº ¸»¶ÒÀ» µÑ·¯½Ñ ÁÖº¯ Áö¹ÝÀÇ Æ¯¼º¿¡ Á¿ìµÇ¹Ç·Î, Çן ÁßÀÇ Áö¹Ý°Åµ¿À» °èÃøÇϰí Áö¹Ý°ú ¸»¶Ò °Åµ¿°£ÀÇ »ó°ü°ü°è¸¦ ºÐ¼®ÇÏ´Â ¿¬±¸°¡ ÇÊ¿äÇÏ´Ù. º» ¿¬±¸¿¡¼­´Â ¸»¶Ò ÀÎÁ¢Áö¹Ý¿¡ °£±Ø¼ö¾Ð°è, °æ»ç°è, ÁöÇ¥ º¯À§¸»¶Ò, ±×¸®°í ¸»¶Ò º¯Çü·ü°è µîÀ» ¸Å¼³ÇÏ¿© ³«µ¿°­ Çϱ¸Áö¿ª¿¡ À§Ä¡ÇÑ ´ë½Éµµ ¿¬¾àÁö¹Ý¿¡ ¾à 57m °üÀÔ±íÀÌÀÇ PHC Àå´ë ¸»¶ÒÀ» ÇןÇÏ¿´À» ¶§ ¸»¶Ò ÃàÇÏÁß ºÐÆ÷¿Í ÀÎÁ¢Áö¹ÝÀÇ °Åµ¿À» ¾à 1³â°£ °èÃøÇÏ°í ±× °á°ú¸¦ ºÐ¼®ÇÏ¿´´Ù. °èÃø°á°ú ¸Å¸³ÇÏÁß°ú Çן¿¡ ÀÇÇØ ¹ß»ýÇÑ Á¡ÅäÃþ ³»ÀÇ °úÀ×°£±Ø¼ö¾ÐÀÌ ¼Ò»êµÇ¸é¼­ ¸»¶Òü ³»¿¡ ºÎ¸¶Âû·ÂÀÌ Á¡Â÷ Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ºÎ¸¶Âû·Â¿¡ ÀÇÇØ ¹ß»ýÇÑ ¸»¶ÒüÀÇ ÃÖ´ë ¾ÐÃà·Â Áß ¾à 30%´Â Çן Áß Áõ°¡ÇÑ °úÀ×°£±Ø¼ö¾ÐÀÇ ¿µÇâ ¶§¹®À¸·Î ³ªÅ¸³µ´Ù. ±×·¯¹Ç·Î, Á¡¼ºÅä Áö¹Ý¿¡ ¼³Ä¡µÇ´Â ´ëºÎºÐÀÇ ¸»¶Ò¿¡ ´ëÇÏ¿© ºÎ¸¶Âû·ÂÀ» °í·ÁÇÑ ¼³°è¸¦ ¼öÇàÇÒ Çʿ伺ÀÌ °­Á¶µÇ¾ú´Ù.
Because pile behavior is governed by geotechnical characteristics of surrounding soils, it is therefore necessary to monitor ground responses during pile driving and analyze the relation between the behaviors of pile and ground. In this research, the 57 m long PHC pile was driven into deep soft clay in the Nakdong River estuary area. During and after the pile driving, the ground responses and the residual load of pile have been monitored for about a year, by using piezometers, inclinometers, level posts for surface settlement, and strain gauges in piles etc. As the results, the residual load by the negative skin friction along the pile increased with the dissipation of the excess pore pressure, which was developed by pile driving and reclamation. About 30% of the maximum residual load developed due to the dissipation of the increased excess pore pressure during the driving. It is thus emphasized that most piles driven in clay deposits need to be designed by considering negative skin friction along the pile.
 
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Ground response;Negative Skin friction;PHC pile;Pile driving;Residual load;Soft clay;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.5, 2007³â, pp.131-141
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200724737435074)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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