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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.6, 2003³â, pp.307-323
C.G.S°ø¹ýÀ» Àû¿ëÇÑ ¿¬¾àÁ¡ÅäÁö¹Ý¿¡¼­ÀÇ °Åµ¿Æ¯¼º¿¡ °üÇÑ ¿¬±¸
( A Study on the Behavior Characteristics of Soft Clay Ground by C.G.S Method )
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º» ¿¬±¸¿¡¼­´Â ħÇϰ¡ ¹ß»ýÇÑ ¿¬¾àÁö¹Ý¿¡ ´ëÇÏ¿© ÀúÀ¯µ¿¼º ¸ôÅ»¿¡ ÀÇÇÑ ÁÖÀÔ°ø¹ýÀÎ C.G.S°ø¹ýÀÇ Àû¿ë¼º°ú ħÇϾïÁ¦ È¿°ú¸¦ È®ÀÎÇϱâ À§ÇÏ¿© ½ÃÇè½Ã°øÀ» ½Ç½ÃÇÏ¿´À¸¸ç, ±× °á°ú¸¦ ÀÌ¿ëÇÏ¿© Áö¹ÝÁ¶°Ç¿¡ ÀûÇÕÇÑ ¼³Ä¡Á÷°æ, °£°Ý, ½Éµµ, ÁÖÀÔÀç, ÁÖÀԾРµî ´Ù¾çÇÑ Á¶°ÇÀ» °í·ÁÇÑ ½Ã°ø°ü¸®±âÁØÀ» Á¤ÇÏ¿© º» ½Ã°øÀ» ½Ç½ÃÇÏ¿´´Ù. º» ½Ã°ø°úÁ¤ Áß¿¡´Â Áö¹Ý°³·® È¿°ú¸¦ ÆÄ¾ÇÇϱâ À§ÇÏ¿© C.G.S°³·® Àü, ÈÄ ÇöÀåÁö¹ÝÁ¶»ç ¹× ÀÌ¿¡ µû¸¥ ½Ç³»ÅäÁú½ÃÇè, °èÃø°ü¸® µîÀ» ¼öÇàÇÏ¿´´Ù. ÇöÀå Á¶»ç½ÃÇè¿¡ ÀÇÇÑ °­µµÆ¯¼º È®Àΰá°ú C.G.SÁÖÀÔ ÁÖº¯Áö¹ÝÀº °³·®Àü°ú ºñ±³ÇÏ¿© Àü¹ÝÀûÀ¸·Î Áö¹Ý°­µµ°¡ Áõ°¡µÇ¾úÀ½À» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ, °èÃø°ü¸® ¹× ¾Ð¹ÐƯ¼ºÀ» ºÐ¼®ÇÑ °á°ú ÁÖº¯Áö¹ÝÀÇ ¾Ð¹ÐƯ¼ºÀÌ °³¼±µÇ¾úÀ½À» È®ÀÎÇÒ ¼ö ÀÖ¾úÀ¸¸ç, ƯÈ÷ C.G.SÁÖÀÔÀçÀÇ ¾ÐÃà°­µµ½ÃÇè °á°ú ÁÖº¯Áö¹Ý¿¡ ºñÇØ °­¼ºÀÌ ¸Å¿ì Å« C.G.SÁÖÀÔ¿¡ µû¸¥ º¹ÇÕÁö¹ÝÈ¿°ú¸¦ ÅëÇØ ÁöÁö·Â Áõ´ëÈ¿°ú ¹× ÀÀ·ÂºÐ´ãÀ¸·Î À巡ħÇÏ·®À» ¾ïÁ¦ÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÌ¿Í °°ÀÌ ¿¬¾àÁ¡¼ºÅä Áö¹Ý¿¡¼­ C.G.SÁÖÀԽðø¿¡ ÀÇÇÑ Ä§ÇϾïÁ¦È¿°ú·ÎºÎÅÍ °ø¹ýÀÇ Àû¿ë¼ºÀÌ ¸Å¿ì ¾çÈ£ÇÑ °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.
In this study the pilot test of C.G.S (Compaction Grouting System) as injection method by low slump mortar was performed and the results were analyzed in order to find out the application of this method to the soft ground and the effect of settlement restraint. The site for pilot test is adjacent to apartments supported by pile foundations. Sand drain method was performed previously as countermeasures against settlement, but settlement occurs continuously because this ground is very soft. Site investigations such as SPT, CPT and vane shear test were performed to determine the characteristics of ground improvement after the installation of C.G.S. Field measurements were performed on purpose to find out the displacement of ground during the installation of C.G.S. From the results of this study, C.G.S method can be optimized by the control of radius, space, depth, injection material and injection pressure. C.G.S improves soft ground with radial consolidation of adjacent soft ground. Considering that increase of N value to about 3, C.G.S can be considered as an effective method to increase the bearing capacity as well as constrain the settlement of soft ground. It is also expected to be economic and effective in the improvement of ground when it is used in applicable sites.
 
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Bearing capacity;C.G.S;Injection;Low slump;Pilot test;Settlement restraint;Soft ground;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.6, 2003³â, pp.307-323
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922148087)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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