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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.4, 2006³â, pp.95-104
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( An Experimental Study on the Load-settlement Behavior and Settlement-reducing Effect of the Disconnected Piled Raft Foundation ) |
| ÀÌ¿µ»ý;È«½ÂÇö; °æ±â´ëÇб³ Åä¸ñ°øÇÐ;°æ±â´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
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| ÃÖ±Ù °æÁ¦ÀûÀÌ°í ¾ÈÀüÇÑ ±âÃÊ ¼³°è¸¦ À§ÇÏ¿© ¸»¶ÒÁöÁö Àü¸é±âÃÊ(Piled raft) ¶Ç´Â ¸»¶Òº¸°±âÃÊ(Disconnected piled raft)¿¡ ´ëÇÑ ¼³°è°¡ °ü½ÉÀ» ¸ðÀ¸°í ÀÖ´Ù. º» ¿¬±¸´Â ±¹³»¿¡¼ ¿¬±¸°¡ ¹ÌÁøÇÑ ¸»¶Òº¸°±âÃÊÀÇ °Åµ¿°ú ±× È¿°ú¸¦ ½Ç³» ¸ðÇü ½ÃÇèÀ» ´ë½ÅÇÏ´Â »ïÃà¾ÐÃà½ÃÇèÀ» ÅëÇÏ¿© ±Ô¸íÇÏ¿´´Ù. ÁÖ¹®Áø Ç¥ÁØ»ç¿Í ź¼ÒºÀÀ» °¢°¢ Áö¹Ý°ú ¸»¶ÒÀ¸·Î »ç¿ëÇÏ¿© »ïÃà¾ÐÃà½ÃÇè±â¿¡ º¸° Áö¹ÝÀ» ¼ºÇüÇÑ ÈÄ ±¸¼ÓÀÀ·Â »óÅ¿¡¼ ÀçÇÏ ½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ¸»¶Ò º¸°¿¡ µû¸¥ °Åµ¿ Â÷À̸¦ ±Ô¸íÇϱâ À§ÇÏ¿© ¸»¶Ò °³¼ö, ¸»¶Ò Á÷°æ ¹× ¸»¶Ò ±æÀÌ µîÀÇ º¯È¸¦ ÁÖ¾î ÇÏÁß-ħÇÏ °ü°è¸¦ µµ½ÃÇÏ°í ±× °á°ú¸¦ ºÐ¼®ÇÏ¿´´Ù. ½ÃÇè °á°ú ±âÃÊÁö¹Ý ¸éÀû¿¡ ´ëÇÑ º¸° ¸»¶Ò ¸éÀûºñ¸¦ º¸°·üÀ̶ó Á¤ÀÇÇÒ ¶§ ¸»¶Ò ¼öÆò´Ü¸é º¸°·üÀÌ ¾à 18%À̰í, ¼öÁ÷´Ü¸é º¸°·üÀÌ ¾à 70%ÀÏ °æ¿ì ħÇÏ·®Àº ¹«º¸°½Ã¿¡ ºñÇÏ¿© ¾à 80%±îÁö °¨¼ÒµÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ ¼öÆò´Ü¸é º¸°·ü ¹× ¼öÁ÷´Ü¸é º¸°·ü¿¡ µû¸¥ ¸»¶Òº¸°±âÃÊ Áö¹ÝÀÇ º¯Çü°è¼ö º¯È´Â °¢°¢ Á÷¼±½Ä E(Mpa) = 8.3p(%)+121.2¿Í E(Mpa) = 1.8p(%)+105.5·Î ³ªÅ¸³µ´Ù. º» ¿¬±¸ÀÇ °á°ú ¸»¶Òº¸°±âÃÊ¿¡¼ ¼Ò±¸°æ, ¼Ò·®ÀÇ ¸»¶Ò º¸°À¸·Îµµ ºñ±³Àû Å« ±âÃÊÁö¹Ý ħÇÏ ¾ïÁ¦ È¿°ú°¡ ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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| For the interests in the economical and safe design of foundation system, the concern on the piled raft or disconnected piled raft foundation system is increasing now. In this study, the behavior and the effects of the disconnected piled raft foundation not studied actively in this country were examined using the triaxial compression tests in place of laboratory model tests. The triaxial test samples were prepared with Jumunjin standard sand and the carbon rods, which simulate the ground soil and piles respectively. After the sample in which carbon rods were arranged was laid inside the triaxial chamber, the confining pressure was applied and then loading test was conducted. To analyze the reinforcing effects of the disconnected piled raft foundation, a few number of tests were carried out by changing the number, the diameter and the length of the model piles. As a result of this study, in the disconnected piled raft foundation system, even though the number of pile is few and the diameter of pile is small, the settlement of the foundation system decreased greatly. |
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| Ű¿öµå |
| Carbon rod;Disconnected piled raft;Settlements;Triaxial compression apparatus; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.4, 2006³â, pp.95-104
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200622219588951)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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