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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.11, 2008³â, pp.61-70
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¾ç¹æÇâ ¸»¶Ò¼±´ÜÀçÇϽÃÇè¿¡ ÀÇÇÑ ¾Ï¹Ý±ÙÀÔ ÇöÀ埼³¸»¶ÒÀÇ ÇÏÁß-ħÇϰŵ¿ ºÐ¼®
( Load-Settlement Behavior of Rock-socketed Drilled Shafts by Bi-directional Pile Load Test ) |
| ¼³ÈÆÀÏ;Á¤»ó¼¶;ÇѱÙÅÃ;±èÀ翵; ¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;Æ÷½ºÄڰǼ³ Åä¸ñ±â¼úÆÀ;¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;
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| º» ¿¬±¸¿¡¼´Â ±¹³» 4°³ Áö¿ª¿¡¼ ½Ã°øµÈ ÃÑ 10º»ÀÇ ´ë±¸°æ ¾Ï¹Ý ±ÙÀÔ ÇöÀ埼³¸»¶ÒÀÇ ¾ç¹æÇâ ¸»¶Ò ¼±´ÜÀçÇϽÃÇè°ú ÀϹÝÀûÀÎ ¸»¶ÒµÎºÎ ÀçÇϽÃÇèÀ» Åä´ë·Î ÇÏÁß ÀçÇϹæ½Ä¿¡ µû¸¥ ¸»¶ÒÀÇ Ä§Çϰŵ¿ ¹× ÇÏÁßÀüÀÌ °Åµ¿ Ư¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. À̷κÎÅÍ ¾ç¹æÇâ ÀçÇÏÇÏÁßÀ» ¹Þ´Â ÇöÀ埼³¸»¶ÒÀÇ µî°¡ ¸»¶Ò µÎºÎÇÏÁßħÇÏ °Åµ¿À» °íÂûÇÏ°ï ±âÁ¸ µî°¡ µÎºÎÇÏÁßħÇÏ °î¼± »êÁ¤¹æ¹ý°úÀÇ ºñ±³ºÐ¼®À» ÅëÇÏ¿© ÁÖ¸éÇÏÁß¿¡ ÀÇÇØ Ãß°¡ÀûÀÎ ¼±´ÜħÇÏ·®ÀÇ ¿µÇâÁ¤µµ¸¦ ºÐ¼®ÇÏ¿´´Ù. º» ¿¬±¸°á°ú, ÁÖ¸éÇÏÁß¿¡ ÀÇÇØ ¹ß»ýµÇ´Â ¼±´ÜħÇÏ·®À» °í·ÁÇÑ ÇÏÁßÀüÀÌÇØ¼®(coupled load transfer analysis)À» ÅëÇÑ ÇÏÁß-ħÇÏ·® ¿¹Ãø°ªÀº Á¤ÀçÇÏ ½ÃÇè°á°ú¸¦ ÀûÀýÈ÷ ¿¹ÃøÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸³ª, ±Ù»çÀû ÇØ¼®¹ýÀ» ÅëÇÑ µî°¡ ÇÏÁß-ħÇÏ °î¼± ¹× ÀϹÝÀûÀÎ ÇÏÁßÀüÀÌÇØ½Ä(uncoupled load transfer analysis)ÀÇ ¿¹Ãø°ªÀº Á¤ÀçÇÏ ½ÃÇè°á°ú¿¡ ºñÇØ ħÇÏ·®À» °ú¼Ò Æò°¡ÇÒ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ÇÏÁö¸¸, ½ÃÇ踻¶Ò ±ÙÀԺκÐÀÇ ¾Ï¹ÝÃþÀÌ ¸Å¿ì ´Ü´ÜÇÒ °æ¿ì ÁÖ¸éÇÏÁß¿¡ ÀÇÇÑ ¼±´ÜħÇÏ·®ÀÌ ¸Å¿ì ÀÛÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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| Load settlement behaviors and load transfer characteristics of rock-socketed pile subjected bi-directional load at pile tip were investigated using bi-directional pile load tests (BD PLT) performed on ten large-diameter drilled shafts at four sites. Based on test results, additional pile-toe displacement ($w_{bs}$) by coupled soil resistance was analyzed, and thus equivalent top loaded load-settlement curve of pile subjected bi-directional load was proposed by taking into account the coupled soil resistance. Through comparisons with field case studies, it is found that for test piles there exists effect of coupled soil resistance, which is represented by wbs, and thus an equivalent curve obtained by existing uncoupled methods can overestimate bearing capacity of piles by BD PLT. On the other hand, the analysis by the proposed method with soil coupling effect has a considerably larger settlement when compared with the results by uncoupled load transfer method and estimates reasonable load-settlement behaviors of test piles. In case of pile socketed in high strength rocks, however, effects of coupled soil resistance can be neglected. |
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| Ű¿öµå |
| Bi-directional pile load test;Coupled soil resistance;Drilled shafts;Load settlement behavior;Load transfer analysis; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.11, 2008³â, pp.61-70
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200806135608614)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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