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Çѱ¹Áö¹Ý°øÇÐȸ / v.9, no.4, 1993³â, pp.37-44
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¸ðÇü½ÇÇèÀ» ÅëÇÑ ¸»¶ÒÁöÁö·ÂÀÇ Æò°¡ ¹× Ä¡¼öÈ¿°úÀÇ ºñ±³ºÐ¼®
( Evaluation of Pile Bearing Capacity and Scale Effect Using Model Pile Test ) |
| ÀÌÀθð;ÀÌÁ¤ÇÐ; Á¤È¸¿ø, °í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;Á¤È¸¿ø, °í·Á´ëÇб³ ´ëÇпø Åä¸ñȯ°æ°øÇаú ¹Ú»ç°úÁ¤, Á¤È¸¿ø, (ÁÖ)°í·Á±âÃÊ ¿¬±¸¼Ò ¿¬±¸¿ø, Á¤È¸¿ø, (ÁÖ)°í·Á ±âÃÊ ¿¬±¸¼Ò ¼ÒÀå;
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| ½Ç³» ¸ðÇü½ÇÇèÀ» ÅëÇÏ¿© ¸ðÇü¸»¶Ò ÇѰè±íÀÌÀÇ È®Àΰú ±âÁ¸ ¼±´ÜÁöÁö·ÂÀÇ À̷нĵéÀ» ½Ç³»¸ðÇü½ÇÇèÀÇ ¼±´ÜÁöÁö·Â ½ÇÃøÄ¡¿Í ºñ±³ÇÏ¿© ±× Â÷À̸¦ ºÐ¼®ÇÏ¿´À¸¸ç, ¸»¶ÒÀÇ Á÷°æÂ÷ÀÌ¿¡¼ À¯¹ßµÇ´Â ÁöÁö·ÂÀÇ Â÷À̸¦ ºñ±³ÇϰíÀÚ ½Ç³» ¸ðÇü½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ¸ðÇüÁö¹ÝÀ» ±ÕÁúÇÑ ¸ð·¡·Î Á¶¼ºÇÑ °æ¿ì¿Í ±¹³»ÀÇ ÇöÀåÁ¶°Ç¿¡ °¡±õ°Ô ¸ðÇüÁö¹ÝÀ» Á¶¼ºÇÑ ¸ð·¡/dzÈÅäÃþ °æ¿ì·Î ³ª´©¾î ¸ðÇü½ÇÇèÀ» ½Ç½ÃÇÏ¿© Ä¡¼öÈ¿°ú¸¦ ºñ±³ÇÏ¿´´Ù. ½ÇÇè°á°ú, ¸ðÇü¸»¶ÒÀÇ ¼±´ÜÁöÁö·ÂÀº ¸ð·¡Áö¹ÝÀÇ °æ¿ì ÀÀ·Â¼ö ÁØÀÌ ³ôÀ» ¶§ ÇѰè°üÀÔ±íÀÌ È¿°ú¸¦ ³ªÅ¸³ÂÀ¸¸ç, ¸ð·¡1dzÈÅäÃþÀÇ °æ¿ì ÇѰè°üÀÔ±íÀ̸¦ È®¿¬È÷ È®ÀÎÇÒ ¼ö´Â ¾ø¾úÀ¸³ª ±× °æÇâÀ» º¸ÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. Á¤ÀûÁöÁö·Â °ø½ÄÀ¸·ÎºÎÅÍ ¾ò¾îÁø °è»êÄ¡ µéÀº ¸ðÇü½ÇÇè¿¡ ÀÇÇÑ ½ÇÃøÄ¡ºÎ´Ù ÈξÀ Å« °ªÀ¸·Î °ú´ëÆò°¡ ÇÏ´Â °æÇâÀÌ ÀÖ¾ú´Ù. Á÷°æÅ©±â¿¡ µû¸¥ ÁöÁö·ÂÀÇ Â÷ÀÌÀÎ Ä¡¼öÈ¿°ú´Â ¸ð·¡Áö¹ÝÀÇ °æ¿ì È®ÀÎÇÒ ¼ö ÀÖ¾úÀ¸³ª. ¸ð·¡/dzÈÅäÃþ Áö¹ÝÀÇ °æ Ãß¿¡´Â ¿ÀÈ÷·Á Å« Á÷°æÀÇ ¸»¶ÒÀÌ ÀÛÀº Á÷°æÀÇ ¸»¶Òº¸´Ù Å©°Ô ³ªÅ¸³ª´Â °æÇâÀ» ¾ò¾ú´Ù. |
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| Model pile tests in calibration chamber are performed in order to study the two factors that the pile bearing capacity is significantly influenced by. Those factors are the critical depth concept and the scale effect caused by pile diameters. Firstly, the predicted values of end bearing capacity from the various static formulae were compared with the measured ones from model pile tests. Secondly, the critical depth concept and the scale effect were investigated by using two different soil conditions in a series of calibration chamber tests : the one is uniform sand : and the other is weathered granites overlayered by sand. Main results obtained from the model tests can be summarized as follows : (1) The end bearing capacity was increased with pile penetration depth up to penetration ratio of 7 to 8 when the cell pressure is high, and the critical depth was observed in the current chamber tests with uniform sand layer , (2) The predicted end bearing capacities were mostly lager than the measured, and it was found that the differences between the predicted and the measured values became smaller as the pile penetration ratio was increased : (3) The end bearing capacity of the small diameter pile in weathered granites layer was mostly less than that of the larger pile, while in uniform sand layer it was vice. |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.9, no.4, 1993³â, pp.37-44
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199311920445182)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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