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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.3, 2005³â, pp.5-17
Áö±¸Åë°èÇÐ Å©¸®±ë ±â¹ýÀ» ÀÌ¿ëÇÑ ¿¬¾àÁö¹ÝÀÇ ºÒÈ®½Ç¼º ºÐ¼®
( Uncertainty Analysis of Soft Ground Using Geostatistical Kriging Method )
À±±æ¸²;À̰­¿î;俵¼ö; Çѱ¹Çؾ翬±¸¿ø, ¿¬¾ÈÇ׸¸°øÇк»ºÎ;µ¿¼º¿£Áö´Ï¾î¸µ, Áö¹Ý ¹× ÅͳκÎ;¼ö¿ø´ëÇб³ Åä¸ñ°øÇаú;
 
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³²ÇØ¾È ºÎ»ê ÇØ¼ºÁ¡ÅäÁö¹ÝÀ» ´ë»óÀ¸·Î Áö¹ÝÁ¶»ç ¹× ½ÃÇè, ºÐ¼®°úÁ¤¿¡¼­ ¹ß»ýÇÏ´Â ´Ù¾çÇÑ Áö¹ÝÀÇ °ø°£Àû ºÒÈ®½Ç¼ºÀ» ¸é±¸ÇÑ ³»¿ëÀÌ´Ù. Áö¹ÝÀÇ ºÒÈ®½Ç¼ºÀ» Á¤·®È­Çϱâ À§ÇÏ¿© Áö¹ÝÀÇ °ø°£Àû ºÒÈ®½Ç¼ºÀ» ¼öġȭÇÏ´Â Áö±¸Åë°èÇÐÀû ±â¹ýÀ» »ç¿ëÇÏ¿© Áö¹ÝÀÇ °ø°£Àû ¹æÇ⼺À» ºÐ¼®ÇÏ¿´´Ù. º» ³í¹®¿¡¼­ ºÒÈ®½Ç¼º ºÐ¼®¿¡ »ç¿ëµÈ Áö¹ÝÁ¶»ç´Â ¿øÀ§Ä¡ º¸¸µÀº 25°³, ½Ç³»½ÃÇèÀº 73ȸ, ÇöÀ庣ÀνÃÇè 124ȸ, ±×¸®°í ½Éµµº° ÄܰüÀÔ½ÃÇè 25ȸÀÇ °á°ú°¡ Ȱ¿ëµÇ¾ú´Ù. Áö¹ÝÀÇ ºÒÈ®½Ç¼º¿¡ ´ëÇÑ °ø°£Àû ºÐ¼®¿¡ »ç¿ëµÈ ÇÙ½ÉÀÚ·á´Â Å«°üÀÔ ½ÃÇè°á°úÀÌ°í Æ¯È÷ ºñ¹è¼ö Àü´Ü°­µµ¸¦ »êÁ¤½Ã Å« ¿µÇâÀ» ¹ÌÄ¡´Â Äܰè¼ö($N_k$ )¿¡ ´ëÇÏ¿© Áö±¸Åë°èÇÐÀû ¹æ¹ý°ú ±âÁ¸ÀÇ ÀϹÝÀûÀÎ ¹æ¹ýÀ¸·Î »óÈ¿ ºñ±³ºÐ¼® ÇÏ¿´´Ù. ¿¬±¸°á°ú, Áö±¸Åë°èÇÐÀû ±â¹ýÀ» ÅëÇÑ ½ÃÇèÀÚ·áÀÇ ÇØ¼®Àº Áö¹Ý °íÀ¯Æ¯¼º¿¡ µû¸¥ °ø°£Àû ÀÚ±â»ó°ü¼ºÀ» ãÀ» ¼ö ÀÖÀ¸¸ç ƯÁ¤ ¹æÇâ¿¡ ´ëÇÑ ½ÃÇèÀÚ·áÀÇ »ó°ü¼ºÀÌ ÀÓÀÇÀÇ Áö¿ª¿¡ ´ëÇÑ °ª ÃßÁ¤¿¡ Àû¿ëµÇ¾î º¸´Ù ½Å·Ú¼º ÀÖ°Ô ºÐÆ÷¾ç»óÀ» ÃßÁ¤ÇÒ ¼ö ÀÖ¾ú´Ù. ±×·¯¹Ç·Î Áö±¸Åë°èÇÐÀû Å©¸®±ë ºÐ¼®±â¹ýÀº ´ë»óÁö¿ªÀÇ ¾Ð¹Ð°ú °­µµÆ¯¼º ºÐÆ÷¸¦ ±Ô¸íÇÏ´Â µ¥´Â ¸Å¿ì À¯¿ëÇÏ°Ô »ç¿ëµÉ ¼ö ÀÖ´Ù´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù.
Spatial uncertainty of Busan marine clay ground, which commonly occurs during site investigation testing, data analysis and transformation modeling, has been described. In this paper geotechnical uncertainty of shear strength indicator $N_k$ has been quantified in both horizontal direction and vertical direction using geostatistical Kriging method. Most of soil data used are from 25 boring tests, 75 laboratory tests, 124 field vane tests and 25 cone penetration tests (CPT). CPT-$N_k$ data for undrained shear strength determination, which are the most important properties in geotechnical design stages, have been analysed. Comparison between cone factor from conventional CPT-based method and that of geostatistical method shows that geostatistical Kriging method is an ideal tool to quantify the spatial variability of uncertainty from self-correlation of soil property of interest, and can be recommended to identify the spatial distribution of consolidation .md shear strength of soils at any sites concerned.
 
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CPT;Geostatistics;Kriging;Shear strength;Soft ground;Uncertainty;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.3, 2005³â, pp.5-17
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200520828086103)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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