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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.9, 2009³â, pp.67-76
´ë½Éµµ ¿¬¾àÁö¹Ý¿¡ Àû¿ëµÇ´Â PBDÀÇ Åë¼ö´É¿¡ °üÇÑ ¿¬±¸
( A Study on Drainage Capacity of PBD Installed in Deep Soft Ground )
º¯¿ä¼Á;¾Èº´Á¦;õº´½Ä; ÇѾç´ëÇб³ ´ëÇпø °Ç¼³È¯°æ°øÇаú;ÇѾç´ëÇб³ ´ëÇпø °Ç¼³È¯°æ°øÇаú;ÇѾç´ëÇб³ °Ç¼³È¯°æ°øÇаú;
 
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¿¬¾àÁö¹ÝÀº ÇØ¼ºÁ¡Åä, ½ÇÆ®Áú, »çÁúÅä µî°ú °°Àº Áö¹ÝÀ¸·Î Ç׸¸, °øÇ×, ±³·®°ú °°Àº ±¸Á¶¹°ÀÇ ÃàÁ¶½Ã ÁöÁö·Â ºÎÁ· ¹× ħÇÏ, Àü´Üº¯Çü µîÀÇ ¹®Á¦Á¡À» °¡Áø´Ù. ÀÌ·¯ÇÑ ¹®Á¦Á¡À» °³¼±ÇÏ°í ¿¬¾àÁö¹ÝÀÇ Á¶±â ħÇÏ ¹× °­µµÁõÁøÀ» À§ÇØ ´Ù¾çÇÑ Áö¹Ý°³·®°ø¹ýµéÀÌ Àû¿ëµÇ°í ÀÖÀ¸¸ç ¿¬¾àÁö¹ÝÀÇ ¾Ð¹Ð¿¡ ¼Ò¿äµÇ´Â ½Ã°£À» ´ÜÃà½Ã۱â À§ÇØ ¿¬Á÷¹è¼ö°ø¹ýÀÌ ¸¹ÀÌ »ç¿ëµÇ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ´ë½Éµµ ¿¬¾àÁö¹Ý¿¡ Àû¿ëµÉ PBD(Plastic Board Drain)°ø¹ý¿¡ ´ëÇØ Àû¿ë¼ºÀ» ºÐ¼®Çϱâ À§ÇØ SD(Sand Drain)¿Í ºñ±³ÇÏ¿© º¹ÇÕÅë¼ö´É½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ½ÇÇè°á°ú, ¹è¼öÀçÀÇ ÃÖ¼ÒÅë¼ö´ÉÀº ´ÜÀÏÄÚ¾ÆPBDÀÇ °æ¿ì $400kN/m^2$À̻󿡼­ $10cm^3/sec$ÀÌ»óÀ¸·Î ÃøÁ¤µÇ°í $500kN/m^2$À̻󿡼­ $5cm^3/sec$ÀÌÇÏ·Î ÃøÁ¤µÇ¸ç, ÀÌÁßÄÚ¾ÆPBDÀÇ °æ¿ì $500kN/m^2$À̻󿡼­ $10cm^3/sec$ÀÌ»óÀ¸·Î ÃøÁ¤µÇ¾ú´Ù. ÇÑÆí $500kN/m^2$À̻󿡼­ SDÀÇ ÃÖ¼ÒÅë¼ö´ÉÀº $0.4cm^3/sec$±îÁö ¶³¾îÁö´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. µû¶ó¼­ ÀÌÁßÄÚ¾Æ PBD¸¦ »ç¿ëÇÏ´Â °ÍÀÌ ´ë½Éµµ ¿¬¾àÁö¹Ý°³·®À» À§ÇØ È¿°úÀûÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
The problems of bearing capacity, settlement and shear deformation occur when constructing a structure such as harbor, airport and bridge on soft ground of marine clay, silty clay or sandy soil. Various ground improvement methods are applied to obtain preceding settlement of soft ground and strength increase. In this study, to analyze the applicability of PBD method in deep soft ground, the compound drainage capacity test was operated in comparison with SD. As a result of the test, a minimum drainage capacity of drain material was estimated to be more than $10;cm^3/sec$ at a more than $400;kN/m^2$ and less than $5;cm^3/sec$ at a more than $500;kN/m^2$ confining pressure in case of single core PBD. In case of double core PBD, it was estimated to be more than $10;cm^3/sec$ at a more than $500;kN/m^2$ confining pressure.
 
Ű¿öµå
Compound drainage capacity test;Double core PBD;Double layered soft clay;Single core PBD;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.9, 2009³â, pp.67-76
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200934939599702)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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