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Çѱ¹Áö¹Ý°øÇÐȸ / v.17, no.6, 2001³â, pp.53-67
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ÀúÀ¯µ¿¼³ ¸ôÅ»ÁÖÀÔ¿¡ ÀÇÇÑ ¿¬¾àÁö¹ÝÀÇ Ä§ÇϾïÁ¦ È¿°ú
( Settlement Restraint of Soft Ground by Low Slump Mortar Injection ) |
| õº´½Ä;¿©À¯Çö;Á¤¿µ±³; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Çѱ¹Çؾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;µ§ÄÚ¸®¾Æ ±×¶ó¿ìÆÃ(ÁÖ) ´ëÇ¥ÀÌ»ç;
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| º» ¿¬±¸¿¡¼´Â ħÇϰ¡ ¹ß»ýÇÑ ¿¬¾àÁö¹Ý¿¡ ´ëÇÏ¿© ÀúÀ¯µ¿¼º ¸ôÅ»¿¡ ÀÇÇÑ ÁÖÀÔ°ø¹ýÀÎ CGS°ø¹ýÀÇ Àû¿ë¼º°ú ħÇϾïÁ¦ È¿°ú¸¦ È®ÀÎÇϱâ À§ÇÏ¿© ½ÃÇè½Ã°øÀ» ½Ç½ÃÇÏ°í ±× °á°ú¸¦ ºÐ¼®ÇÏ¿´´Ù. ½ÃÇè½Ã°ø ÇöÀåÀº ÆÄÀÏ¿¡ ÀÇÇÏ¿© ÁöÁöµÈ ±â ½Ã°ø µÈ ¾ÆÆÄÆ®ÀÇ ÁÖº¯Áö¹ÝÀ¸·Î¼ »çÀü¿¡ sand drain°ø¹ýÀ¸·Î Áö¹Ý¿¡ ´ëÇÑ Ã³¸®¸¦ ½Ç½ÃÇÏ¿´À¸³ª ÀÌÈÄ¿¡µµ Áö¼ÓÀûÀΠħÇϰ¡ ¹ß»ýÇϰí ÀÖ´Â ¿¬¾àÁö¹ÝÀÌ´Ù. CGSÁÖÀÔ Àü. ÈÄÀÇ Áö¹Ý°³·®Æ¯¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇÏ¿© ÇöÀå ¹× ½Ç³»ÅäÁú½ÃÇè°ú, ÁÖÀԽðø Áß °Åµ¿Æ¯¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇÏ¿© °èÃø°ü¸®¿Í FDMÇØ¼®À» ½Ç½ÃÇÏ¿´´Ù. ºÐ¼®°á°ú ¿¬¾àÁö¹ÝÀÇ Áö¹ÝħÇÏ ¹æÁö¸¦ ÁÖ¸ñÀûÀ¸·Î ÇÏ´Â CGS°ø¹ýÀº Áö¹ÝÁ¶°Ç¿¡ ÀûÇÕÇÑ ¼³Ä¡Á÷°æ, °£°Ý, ½Éµµ, ÁÖÀÔÀç, ÁÖÀԾРµî ´Ù¾çÇÑ Á¶°ÇÀ¸·ÎºÎÅÍ ½Ã°ø°ü¸®°¡ °¡´ÉÇϸç, µû¶ó¼ ¼³Ä¡µÈ CGS±¸Ã¼´Â ÆÄÀÏÀÇ ÁöÁöÈ¿°ú¿Í ´õºÒ¾î ÁÖº¯Áö¹ÝÀ» ¾ÐÃà°È½ÃÄÑ º¹ÇÕÀûÀ¸·Î Áö¹ÝÀ» °³·®½ÃŰ¹Ç·Î NÄ¡°¡ Æò±Õ 2.1 Áõ°¡ÇÏ´Â µî Áö¹ÝÀÇ ÁöÁö·Â Áõ´ë ¹× ħÇϾïÁ¦¿¡ È¿°ú°¡ ÀÖ¾ú´Ù. ¶ÇÇÑ Àû¿ë¼º ÀÖ´Â ´Ù¾çÇÑ ÇöÀå¿¡ ÀϹÝÀûÀ¸·Î »ç¿ëÇÏ°Ô µÉ °æ¿ì °³·®È¿°ú¿Í ´õºÒ¾î °æÁ¦¼ºÀÌ È®º¸µÉ ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëµÈ´Ù. |
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| In this study the pilot test of CGS as injection method by low slump mortar was performed and the results were analyzed in order to find out the application of this method and effect of settlement restraint. The site far pilot test is adjacent to apartments supported by pile foundations. Sand drain method was performed previously as countermeasures against settlement, but settlement occur continuously because this ground is very soft. Site investigations such as SPT, DCPT and vane shear test were performed to determine the characteristics of ground improvement. Field measurements and FDM analysis were performed on purpose to find out the displacement of ground during injection works. From the results of this study, CGS method can be optimized by the control of diagram, space, depth, injection material, and injection pressure. CGS improved soft ground compositely by the bearing effect of CGS columns and reinforcement of adjacent ground. Considering that increase of N value is about 2.1, CGS can be considered as an effective method to increase the bearing capacity as well as to stop the settlement of soft ground. It is also expected to be economic and effective in improvement of ground when it is used in applicable sites. |
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| Ű¿öµå |
| Bearing capacity;CGS;Injection;Low slump;Pilot test;Settlement restraint;Soft ground; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.17, no.6, 2001³â, pp.53-67
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920879492)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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