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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.2, 2009³â, pp.67-77
CPT¿Í DMT¿¡ ÀÇÇÑ »çÁúÅä °í°á¿µÇâ Æò°¡
( Evaluation of Cementation Effect of Sand Using CPT and DMT )
À̹®ÁÖ;ÃÖ¼º±Ù;È«¼ºÁø;ÀÌ¿ìÁø; °í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ´ëÇü è¹ö¿¡ Á¶¼ºµÈ °í°á½Ã·á¿¡ ¹Ì´ÏÄÜ °üÀÔ½ÃÇè°ú µô¶óÅä¹ÌÅÍ ½ÃÇèÀ» ¼öÇàÇϰí, °¢ ½ÃÇè°á°ú¿¡ ¹Ý¿µµÈ °í°á¿µÇâÀ» Æò°¡ÇÏ¿´´Ù. ½ÃÇè°á°ú µô¶óÅä¹ÌÅÍ ½ÃÇèÀÌ ÄܰüÀÔ½ÃÇ躸´Ù ¸ð·¡ÀÇ °í°á¿¡ Á» ´õ ¹Î°¨ÇÏ¿´À¸³ª, µÎ ½ÃÇè ¸ðµÎ °üÀÔÁÖº¯ÀÇ °í°á°áÇÕÀ» ÆÄ±«Çϱ⠶§¹®¿¡ °í°á¸ð·¡ÀÇ º¯ÇüƯ¼ºÀ» Á¤È®È÷ Æò°¡ÇÒ ¼ö ¾ø¾ú´Ù. ¸ð·¡ÀÇ °í°áÁ¤µµ°¡ Áõ°¡ÇÒ¼ö·Ï °í°á¸ð·¡ÀÇ µô¶óÅä¹ÌÅÍ °è¼ö¿Í Äܼ±´ÜÀúÇ×ÀÇ ºñ($E_D/q_c$)°¡ Áõ°¡ÇÏ¿´À¸³ª, ±âÁ¸ ¿¬±¸¿Í´Â ´Þ¸® °í°á¸ð·¡¿Í ¹Ì°í°á¸ð·¡ÀÇ ¼öÆòÀ½·ÂÁö¼ö¿Í Äܼ±´ÜÀúÇ×ÀÇ °ü°è´Â ¸íÈ®È÷ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù. Äܼ±´ÜÀúÇ×°ú µô¶óÅä¹ÌÅÍ È¾¹æÇⱸ¼Ó º¯Çü°è¼ö($M_D$)ÀÇ °ü°è·ÎºÎÅÍ °í°á¸ð·¡ÀÇ Á¡Âø·Â°ú Ⱦ¹æÇⱸ¼Ó º¯Çü°è¼ö(M)¸¦ Æò°¡ÇÏ¿´´Ù.
In this study, the relations of cone tip resistances (qc) and DMT indices of cemented sand are analyzed from a series of calibration chamber tests. The experimental results show that, with increasing the cementation level, three DMT indices also increase. The CPT and DMT do not appear to properly reflect the cementation effect of sand, since the penetration induces the damage of cementation. Nevertheless, the DMT is more sensitive to deformation characteristics of cemented sand than CPT. It is also observed that the $E_D/q_c$ ratio of cemented sand is larger than that of uncemented sand. However, the $K_D-q_c/{sigma}_v'$ relation is independant of cementation, unlike the result of previous study. In addition, this study evaluates the constrained modulus and cohesion intercept of cemented sand using the relation between cone resistance and dilatometer constrained modulus ($M_D$).
 
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Cementation;Cohesion intercept;Cone tip resistance;Constrained modulus;DMT indices;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.2, 2009³â, pp.67-77
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200911440579881)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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