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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.4, 2003³â, pp.311-320
ÇÇ¿¡Á¶ ÄÜ ½ÃÇèÀ» ÀÌ¿ëÇÑ Á¡¼ºÅäÀÇ ¾Ð¹Ð°è¼ö ÃßÁ¤
( Estimating the Coefficient of Consolidation of Marine Clay Using Piezocone Penetration Tests )
¹Ú¿ë¿ø;±¸³²½Ç;ÀÌ»óÀÍ; ¸íÁö´ëÇб³ Åä¸ñȯ°æ°øÇаú;¸íÁö´ëÇб³ Åä¸ñ°øÇаú;¸íÁö´ëÇб³ Åä¸ñ°øÇаú;
 
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¾Ð¹Ð°è¼ö´Â Áö¹Ý°úÀ×°£±Ø¼ö¾ÐÀÇ ¼Ò»ê¼Óµµ¸¦ Áö¹èÇϹǷΠ¿¬¾àÁö¹Ý °³·®°ø¹ý ¼³°è¿¡ Àû¿ëµÇ´Â ¸Å¿ì Áß¿äÇÑ Æ¯¼ºÄ¡ÀÇ Çϳª·Î¼­ ¿øÀ§Ä¡ÀÇ ¾Ð¹Ð°è¼ö´Â ÇÇ¿¡Á¶ ÄÜ ¼Ò»ê½ÃÇèÀ» ÅëÇÏ¿© ÃßÁ¤µÈ´Ù. °£±Ø¼ö¾Ð ¼Ò»ê½ÃÇèÀ¸·Î ÃßÁ¤µÇ´Â ¾Ð¹Ð°è¼ö ÃßÁ¤¿¡ Àû¿ëµÇ´Â ±âÁ¸ÀÇ ÀÌ·ÐÇØ µéÀÇ ±¹³» ÇØ¼ºÁ¡Åä Áö¹Ý Àû¿ë¼ºÀ» °ËÅäÇϰí Á¡Åä Áö¹ÝÀÇ Æ¯¼º¿¡ µû¸¥ ¾Ð¹Ð°è¼öÀÇ º¯È­ Ư¼ºÀ» ÆÄ¾ÇÇÏ¿© ¿øÀ§Ä¡ ¾Ð¹Ð°è¼ö¿¡ ´ëÇÑ ÇÕ¸®Àû ÃßÁ¤¿¡ ÀûÇÕÇÑ ÀÌ·ÐÇØ¸¦ ¼±Á¤ÇÏ´Â °ÍÀÌ ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀÌ´Ù. ÀÌ ¿¬±¸¿¡¼­´Â °æ³² ¾ç»ê¹°±Ý Áö¿ªÀÇ ÇØ¼º Á¡¼ºÅäÃþÀ» ´ë»óÀ¸·Î ÇÇ¿¡Á¶ ÄÜ ¼Ò»ê½ÃÇè°ú ºÒ±³¶õ ½Ã·á¿¡ ´ëÇÑ ½Ç³»½ÃÇè(Rowe cell µî)À» ½Ç½ÃÇÏ°í ½ÃÇè°á°ú¸¦ ÀÌ·ÐÇØ¿¡¼­ ¾ò¾îÁø ¼öÆò¾Ð¹Ð°è¼ö¿Í Ç¥ÁؾйнÃÇè(oedometer test), Rowe cell ½ÃÇè°á°ú¿Í ºñ±³ÇÏ¿´´Ù. ¶ÇÇÑ Á¡¼ºÅäÀÇ ¿©·¯ Áö¹Ý Ư¼ºÄ¡(¼±Çà¾Ð¹Ð¾Ð·Â µî)¿Í ¾Ð¹Ð°è¼öÀÇ °ü°è¸¦ °íÂûÇÏ¿© ÇÕ¸®ÀûÀÎ ÀÌ·ÐÇØ ¼±Á¤À» À§ÇÑ ±âÁØÀ» ¸¶·ÃÇϰíÀÚ ÇÏ¿´´Ù. ¿¬±¸°á°ú Torstensson(¿øÅëÇü°øµ¿ÀÌ·Ð)ÇØ¿Í Teh & HoulsbyÀÇ ÇØ°¡ ¸Å¿ì À¯»çÇÑ °ªÀ» º¸À̸ç, Ç¥ÁؾйнÃÇèÀ¸·Î ÃßÁ¤ÇÑ ¼öÆò¾Ð¹Ð°è¼ö´Â ´Ü°èº° ¸ðµÎ Torstensson(¿øÅëÇü) ¶Ç´Â Teh & HoulsbyÀÇ ÀÌ·ÐÇØ¿Í À¯»çÇÏ°Ô ³ªÅ¸³µ´Ù. µû¶ó¼­, ÇÇ¿¡Á¶ ÄÜ ½ÃÇèÀ¸·Î ¼öÆò¾Ð¹Ð°è¼ö¸¦ ±¸ÇÏ´Â ¹æ¹ýÀ¸·Î¼­ À§ÀÇ ÀÌ·ÐÇØ µé[Torstensson(¿øÅëÇü) or The & Houlsby]¿¡ ÀÇÇÑ »êÁ¤Ä¡¸¦ ÃëÇϵµ·Ï ÃßõµÇ¾ú´Ù.
The coefficient of consolidation of clay deposit is one of the most important properties in the design of ground improvement. The in-situ value of $c_h$ is generally estimated by pore pressure dissipation using piezocone. Many researchers have suggested theoretical formula for its estimation. This study attempts to find out the validity of the existing theoretical formula in Korea and to find out the characteristics of $c_h$ related to the mechanical properties of clay. Piezocone tests and laboratory tests were performed at the site of pilot project of ground improvement at Yangsan-Mulgeum, Gyeongnam. Comparison of the estimated values of $c_h$using piezocone tests results and those from laboratory consolidation tests are carried out. Results show that Torstensson(cylindrical cavity theory) and Teh & Houlsby solutions derive similar values of $c_h$. And $c_h$ from oedometer test shows values similar to the above two methods. The value from either of the above two methods[Torstensson(cylindrical) or Teh & Houlsby] is recommended to be used as $c_h$.
 
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Coefficient of consolidation;Dissipation test;Piezocone test;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.4, 2003³â, pp.311-320
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921886683)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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