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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.9, 2008³â, pp.33-40
Áؼ³¸Å¸³ ¿¬¾àÁö¹Ý¿¡ ´ëÇÑ ¾Ð¹ÐħÇÏ ¿¹Ãø ¹× Æò°¡
( Prediction and Assessment on Consolidation Settlement for Soft Ground by Hydraulic Fill )
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º» ¿¬±¸¿¡¼­´Â ÇØ¾È Áؼ³¸Å¸³Áö¹Ý¿¡ ´ëÇÑ ¿¬¾àÁö¹Ý °³·®»ç·Ê¸¦ ÀÌ¿ëÇÏ¿© ¿¬Àû¹è¼ö°ø¹ý Àû¿ë½ÃÀÇ ÇöÀå°èÃø ¹× ¾Ð¹ÐħÇÏ ÇØ¼®À» ½Ç½ÃÇÏ¿´´Ù. ´ë»óÇöÀåÀº ¿øÁö¹ÝÀ§¿¡ ´ë·« 10mÀÇ Áؼ³¸Å¸³À» ÅëÇØ Á¶¼ºµÈ ºÎÁö·Î¼­ °íÇÔ¼öºñ ¹× °í¾ÐÃ༺ÀÇ ÇØ¼ºÁ¡Åä·Î ±¸¼ºµÇ¾î ÀÖ´Ù. 1³â µ¿¾ÈÀÇ ÇöÀå °èÃø°á°ú, ´çÃÊ ¼³°è½ÃÀÇ ¿¹ÃøÄ§ÇÏ·®¿¡ ºñÇØ ¸Å¿ì Å« ¾Ð¹ÐħÇϰ¡ ¹ß»ýÇÏ¿´°í, ÀÌ Á¶°Ç¿¡¼­ÀÇ ÇâÈÄ Ä§Çϰŵ¿À» ¿¹ÃøÇϱâ À§ÇÑ Ãß°¡ ¾Ð¹ÐħÇÏ ÇØ¼® ¹× °èÃø°á°ú¸¦ ÀÌ¿ëÇÑ ¿ªÇؼ®À» ½Ç½ÃÇÏ¿´´Ù. »óºÎ½Ã°ø ¿µÇ⠵ ÀÇÇØ Áؼ³¸Å¸³Áö¹Ý¿¡´Â °ú´ÙÇÑ Àü´Üº¯ÇüÀÌ ¹ß»ýÇÏ¿´À¸¸ç, ÀÌ¿¡ ´ëÇÑ ÇöÀå °èÃø°á°úÀÇ Æò°¡ ¹× º¸Á¤À» ½Ç½ÃÇÏ¿´´Ù. ¾Ð¹ÐÇØ¼® ¹× ¿øÁö¹Ý Á¶°ÇÀ» Æò°¡Çϱâ À§ÇØ ½Ç³»½ÃÇè °á°ú¸¦ ÀÌ¿ëÇÑ ¹°ÁúÇÔ¼öºÐ¼®À» ½Ç½ÃÇÏ¿´À¸¸ç, ÃÖÁ¾ÀûÀ¸·Î ºÎÁö ÀεµÈÄÀÇ ÀÜ·ùħÇÏ·® ¹× ÃÖÁ¾ Áö¹Ý°í¸¦ ¸¸Á·½Ã۱â À§ÇÑ Ãß°¡ ¼ºÅä°í¸¦ »êÁ¤ÇÏ¿´´Ù. Ãß°¡ ¼ºÅäÀÌÈÄÀÇ ÇöÀå °èÃø°á°ú¿Í ´çÃÊ ¿¹ÃøÇß´ø ¾Ð¹ÐħÇÏ °Åµ¿À» ºñ±³ÇÏ¿´À¸¸ç, À̸¦ ÅëÇØ ´çÃÊ ¿¹Ãø³»¿ë¿¡ ´ëÇÑ °ËÁõÀ» ¼öÇàÇÒ ¼ö ÀÖ¾ú´Ù.
This paper describes the performance of ground improvement project using prefabricated vertical drains of condition, in which approximately 10m dredged fill overlies original soft foundation layer in the coastal area composed of soft marine clay with high water content and high compressibility. From field monitoring results, excessive ground settlement compared with predicted settlement in design stage developed during the following one year. In order to predict the final consolidation behavior, recalculation of consolidation settlements and back analysis using observed settlements were conducted. Field monitoring results of surface settlements were evaluated, and then corrected because large shear deformation occurred by construction events in the early stages of consolidation. To predict the consolidation behavior, material functions and in-situ conditions from laboratory consolidation test were re-analyzed. Using these results, height of additional embankment is estimated to satisfy residual settlement limit and maintain an adequate ground elevation. The recalculated time-settlement curve has been compared with field monitoring results after additional surcharge was applied. It might be used for verification of recalculated results.
 
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Consolidation analysis;Consolidation settlement;Dredged fill;Marine clay;Settlement monitoring;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.9, 2008³â, pp.33-40
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200814852871962)
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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