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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.2, 2003³â, pp.237-246
ÇöÀ埼³¸»¶ÒÀÇ Á¤ÀçÇϽÃÇè¿¡ ÀÇÇÑ ÁöÁö·Â°ú À̷нĿ¡ ÀÇÇÑ ÁöÁö·Â°úÀÇ ºñ±³
( The Bearing Capacity Comparison of Drilled Shaft by the Static Load Test and the Suggested Bearing Capacity Formulas )
õº´½Ä;±è¿øÃ¶;ÃÖ¿ë±Ô;¼­´öµ¿; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;°æ¼º´ëÇб³ °Ç¼³¡¤È¯°æ°øÇкÎ;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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Çן¸»¶ÒÀº Áøµ¿°ú ¼ÒÀ½°°Àº ȯ°æÀûÀÎ ¹®Á¦Á¡ÀÌ ÀÖ´Ù. ƯÈ÷ ´ë»ó ÅäÁúÀÌ ÀÚ°¥, È£¹Úµ¹, dzȭ¾ÏÀ¸·Î ±¸¼ºµÇ¾îÀÖ´Ù¸é Çן¸»¶ÒÀÇ Àû¿ëÀº ºÒ°¡´ÉÇϱ⠶§¹®¿¡ ¿ì¸®³ª¶ó¿¡¼­´Â ÇöÀ帻¶ÒÀÇ Àû¿ëÀÌ Áõ°¡Çϰí ÀÖ´Â Ãß¼¼ÀÌ´Ù. ÀϹÝÀûÀ¸·Î ÀÌ·ÐÀûÀÎ °ø½Ä¿¡ ÀÇÇÑ ÇöÀ埼³¸»¶ÒÀÇ ÁöÁö·ÂÀº °ú¼ÒÇÏ°Ô »êÁ¤µÇ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ±âÁ¸¿¡ Á¦¾ÈµÈ ±¹³»¿Ü ÁöÁö·Â »êÁ¤½Ä°ú ÇöÀå½ÃÇèÀ» ÅëÇÑ ½ÇÃøµ¥ÀÌÅ͸¦ ºñ±³ÇϱâÀ§ÇØ ±¤¾È´ë·Î¿Í ¼ö¿µ 3È£±³ÀÇ ¾Ï¹Ý¿¡ ±ÙÀÔµÈ ÇöÀå Ÿ¼³¸»¶Ò¿¡ ´ëÇÑ Á¤ÀçÇϽÃÇèÀ» ¼öÇàÇÏ¿´À¸¸ç, ÇöÀ埼³¸»¶ÒÀÇ ÁÖº¯¸¶Âû·ÂÀ» ÃøÁ¤Çϱâ À§ÇÏ¿© º¯À§°è¸¦ ¼³Ä¡ÇÏ¿´´Ù. ÇöÀå½ÃÇèÀ» ÅëÇÑ ÇöÀ埼³¸»¶ÒÀÇ °Åµ¿Àº ¹Ýº¹ÇÏÁß ÀçÇϽà ¿ÏÀüÇÑ Åº¼º°Åµ¿À» º¸¿´À¸¹Ç·Î ÀÌ´Â ½ÇÁ¦¸»¶ÒÀÇ ±ØÇÑÁöÁö·Â¿¡ µµ´ÞÇÏÁö ¸øÇÏ¿´À½À» ÀÔÁõÇÑ´Ù. À̶§ ÃøÁ¤µÈ ¸»¶ÒÀÇ ÁöÁö·ÂÀÌ À̷нĿ¡ ÀÇÇÏ¿© »êÁ¤µÈ ÁöÁö·Âº¸´Ù Å©°Ô »êÁ¤µÇ¾ú´Ù. ¶ÇÇÑ ½ÇÇè¿¡¼­ ÃøÁ¤µÈ °á°ú¿¡ ÀÇÇϸé ÇöÀ埼³¸»¶ÒÀÇ ÁÖµÈ ÁöÁö·ÂÀÌ ¼±´ÜÁöÁö·ÂÀÌ ¾Æ´Ñ ÁÖº¯¸¶ÂûÀúÇ׿¡ ÀÇÇÑ °ÍÀ̶ó´Â °ÍÀ» º¸¿´´Ù. ±×¸®°í À̿Ͱ°Àº °á°ú¿¡ ÀǰÅÇÏ¿© ÇöÀ埼³¸»¶ÒÀÇ ¼³°è¿¡ ´ëÇÑ ¸î°¡Áö Á¦¾ÈµéÀ» µµÃâÇÏ¿´´Ù.
The driven pile has environmental problems such as vibration and noise. Especially, if the site consists of gravel, cobble and weather rock, the driven pile can not be applied. Therefore, the application of the drilled shafts is increasing in Korea. However, the bearing capacity values by the suggested theoretical formulas are generally considered too conservative. In this paper, static load tests for the rock socketed drilled shaft at Gwangandaero and Suyeong3hogyo are performed and in order to estimate the side friction of the shaft, strain gauges are applied. The bearing capacities from the field test data and the bearing capacity values by the theoretical formula are compared. Even the static load tests didn't reach to the ultimate bearing capacity condition, and all the measured bearing capacity values were higher than those by the theoretical formulas. The field data also showed that the major bearing capacities were not due to end bearings but side friction resistances. Based on the above results, several suggestions are proposed for the drilled shaft design.
 
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Drilled shaft;Static load test;Strain gauge;Ultimate bearing capacity;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.2, 2003³â, pp.237-246
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921640880)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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