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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.4, 2003³â, pp.235-246
ŸÀÔ ¸»¶ÒÀÇ ÁöÁö·Â Áõ°¡È¿°ú Ư¼º
( The Characteristics of the Set-up Effect of Driven Piles )
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±¹³»ÀÇ °æ¿ì ÀÌ µî(1994)ÀÇ ¿¬±¸¸¦ ½ÃÀÛÀ¸·Î ±¹Áö ÇöÀ庰·Î ŸÀÔ¸»¶ÒÀÇ ÁöÁö·Â Áõ°¡È¿°ú¿¡ ´ëÇÑ »ç·Ê¿¬±¸µéÀÌ ÀÖ¾ú´Ù. ±×·¯³ª ÃæºÐÇÑ ½ÃÇèÀڷḦ ¹ÙÅÁÀ¸·Î ÇÑ ÁöÁö·Â Áõ°¡È¿°ú¿¡ ´ëÇÑ Àü¹ÝÀûÀÎ °ËÅä´Â ¾ÆÁ÷ ¹ÌÈíÇÑ ½ÇÁ¤À̰í, ¶ÇÇÑ ÁöÁö·Â Áõ°¡È¿°ú¿¡ Áö¹ÝÁ¶°Ç ¹× ¸»¶ÒÀÇ Çü»óÀÌ ¹ÌÄ¡´Â ¿µÇâ¿¡ ´ëÇØ¼­´Â ¾ÆÁ÷ º¸°í µÈ ¹Ù ¾ø´Ù. ŸÀÔ¸»¶ÒÀÇ ÁöÁö·Â Áõ°¡È¿°ú¸¦ ½Ç¹«ÀûÀ¸·Î ÀÌ¿ëÇϱâ À§Çؼ­´Â ÇöÀå¿¡¼­ ½Ç±¸Á¶¹°¿¡ Àû¿ëµÈ ¸»¶Ò¿¡ ´ëÇÑ ½ÃÇèÀÚ·áÀÇ ºÐ¼®À» ½Ç½ÃÇÏ´Â °ÍÀÌ ÇÊ¿äÇÏ´Ù. º» ¿¬±¸¿¡¼­´Â ¸»¶Ò±âÃÊÀÇ ¼³°è ¹× ÇâÈÄ »çÁúÅä¿¡¼­ÀÇ ÁöÁö·Â Áõ°¡È¿°ú µîÀÇ ¿¬±¸¸¦ À§ÇÑ ±âº» ÀÚ·á·Î Ȱ¿ëÇϱâ À§ÇØ ½Ç±¸Á¶¹°¿¡ Àû¿ëµÇ´Â ´Ù¾çÇÑ ½ÃÇ踻¶ÒÀÇ ½Ã°ø°ú µ¿ÀçÇϽÃÇè ÀÚ·á ºÐ¼®À» ÅëÇØ ÁöÁö·Â Áõ°¡È¿°ú¿¡ ´ëÇÑ Çö»óÀ» ¾Ë¾Æº¸¾Ò´Ù. ¸»¶ÒÀÇ µ¿ÀçÇϽÃÇèÀÇ ºÐ¼® °á°ú, ¸»¶ÒÁöÁö·ÂÀÇ Áõ°¡´Â ÅäÁúº°·Îµµ ¿µÇâÀ» ¹ÞÁö¸¸ Á¶¼ºÀ̷¿¡µµ ¿µÇâÀ» ¹Þ´Â °ÍÀ¸·Î ºÐ¼®µÇ¾úÀ¸¸ç, ƯÈ÷ »çÁúÅä¿¡µµ »ó´çÇÑ ÁöÁö·Â Áõ°¡È¿°ú°¡ ³ªÅ¸³µ´Ù. ÀÌ·¯ÇÑ ¸»¶ÒÀÇ ÁöÁö·ÂÀÇ Áõ°¡´Â ÁÖ·Î ÁÖ¸éºÎ¿¡¼­ ¹ß»ýÇÏ¿´À¸¸ç, ¼±´ÜÇü»ó¿¡ µû¸¥ ÁöÁö·Â Áõ°¡È¿°ú´Â Á¡¼ºÅä¿¡¼­´Â Æó´Ü¸»¶ÒÀÌ Å©°í, »çÁúÅä¿¡¼­´Â °³´Ü¸»¶ÒÀÌ Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Since the study of Lee et al.(1994) there have been some case studies on the set-up effect of driven piles in Korea country. However, comprehensive examination on the analyses of the set-up effect with various testing data has not been carried out. In particular, the analysis of the influence of soil type and pile shape on the set-up effect has not been reported. It is necessary to analyse the test results of production piles in order to apply the set-up effect of driven piles for the field engineering. In this study some test piling and analyses were performed to give basic information to the piling design as well as the research on the set-up effect in sandy soils. The analyses on the set-up effect were performed with the monitoring data obtained from the high-strain dynamic loading tests. It was shown that the set-up effect of driven piles was not only affected by soil type but also by soil formation history It turned out that the set-up effect in sandy soils was considerable one that should not be ignored in the field, and that the bearing capacity increase of pile is mainly caused by the increase of shaft resistance. It was shown that the set-up effect of closed pile was larger than that of opened pile in clayey soils, while the set-up effect of opened pile was larger than that of closed pile in sandy soils.
 
Ű¿öµå
Driven pile;Dynamic load test;Set-up effect;Set-up factor;Time effect;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.4, 2003³â, pp.235-246
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921886612)
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