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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.5, 1999³â, pp.99-110
³«µ¿°­ »ï°¢ÁÖ¿¡¼­ ¼±ÇàÇÏÁß¿¡ µû¸¥ ħÇÏ¿¹Ãø ¹× ÇöÀå°èÃø
( Prediction and Field Measurement of Settlement due to Preloading at the Delta of Nakdong River )
Á¤¼º±³;¹é½ÂÈÆ;±è±ÔÁ¾;ÀÌ´ë¸í; µ¿¾Æ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;(ÁÖ) °¡¾ß ENG;µ¿¾Æ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;¾ç»ê´ëÇÐ Åä¸ñ°ú;
 
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¼±ÇàÇÏÁß°ø¹ýÀÌ ½Ç½ÃµÇ´Â ³«µ¿°­ »ï°¢ÁÖ¿¡¼­ ü°èÀûÀÎ Áö¹ÝÁ¶»ç¸¦ ÅëÇÏ¿© ħÇÏ·®°ú ¾Ð¹Ð¼Ò¿ä ½Ã°£ÀÌ ¿¹ÃøµÇ¾úÀ¸¸ç, ¾ö¼±µÈ °¢Á¾ °èÃø±â¸¦ ÀÌ¿ëÇÏ¿© ÇöÀå°èÃøÀÌ ¼öÇàµÇ¾ú´Ù. ºñ±³°á°ú, ¾à20m µÎ²²ÀÇ ¸ð·¡Ãþ¿¡ ´ëÇÏ¿© ¿¹ÃøÄ§ÇÏ·®Àº ½ÇÃøÄ¡ÀÇ 20%¿¡ ºÒ°úÇÏ¿´´Ù. ÀÌ·¯ÇÑ °ú¼ÒÆò°¡ÀÇ ¿øÀÎÀº PBDŸÀÔ½ÃÀÇ Áøµ¿, ½Ã°£ÀÇÁ¸Àû ħÇÏ ¹× ź¼º°è¼öÀÇ °ú´ëÆò°¡ µî¿¡¼­ ºñ·ÔµÇ¾ú´Ù. ¸ð·¡Ãþ ¾Æ·¡¿¡ À§Ä¡ÇÑ ¾à 20m µÎ²²ÀÇ Á¡¼ºÅäÃþÀÌ ¹Ì¾Ð¹Ð»óÅ¿¡ ÀÖ´Â °ÍÀ¸·Î °¡Á¤ÇÏ¿´´ø ÀÌÀ¯ ¶§¹®¿¡ ¿¹ÃøÄ§ÇÏ·®Àº ½ÇÃøÄ¡¿¡ ºñÇÏ¿© ¾à240%±îÁö °ú´ëÆò°¡µÇ¾ú´Ù. ±×·¯³ª ¾ÐÃà°î¼±À» À籸¼ºÇϰí Á¤±Ô¾Ð¹ÐÁ¡Å並 À§ÇÑ ¾Ð¹ÐħÇϰø½ÄÀ» Àû¿ëÇÏ¿´À» ¶§ Àç°è»êµÈ ħÇÏ·®Àº ½ÇÃø°ª¿¡ ºñ±³Àû ºñ½ÁÇÏ¿´´Ù. ±×¸®°í ¾Ð¹Ð¼Ò¿ä½Ã°£Àº °¢Á¾ ¿µÇâÀÎÀÚ·Î ÀÎÇÏ¿© ½ÇÁ¦°ª¿¡ ºñÇÏ¿© ¾à45% °ú¼ÒÆò°¡µÇ¾ú´Ù.
Settlement and consolidation time were predicted through systematic soil investigation at the delta of Nakdong river where the preloading method was applied. Field measurements were executed with well-selected instruments. As the results of the comparison, the predicted settlement on the sand layer of about 20m thick underestimated the observed one by 20%. This underestimation was due to the effects of vibration during installation of PBD, creep, the overestimated deformation modulus, and so on. For the clay layer of about 20m in thickness under the sand layer, an ID analysis for underconsolidated soil initially overestimated the observed settlement by 240%. However, when the laboratory compression curve was reconstructed and a conventional ID analysis for NC clay was applied, the re-calculated settlement of the clay layer was relatively similar with the observed one. And the predicted consolidation time was about 45% less than the observed one, because of different influencing factors.
 
Ű¿öµå
Deltaic clay;Vertical drains;Consolidation;Field measurement;Prediction.;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.5, 1999³â, pp.99-110
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749557)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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