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Çѱ¹Áö¹Ý°øÇÐȸ / v.27, no.7, 2011³â, pp.69-79
Á¤±Ô¾Ð¹Ð Á¡¼ºÅäÀÇ ±³¶õ¿¡ µû¸¥ °­¼º º¯È­
( Disturbance Effects on the Stiffness of Normally Consolidated Clay )
¹ÚÇØ¿ë;½ÅÇö¿µ;¿À¸íÇÐ;Á¶¿ÏÁ¦; ´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;(ÁÖ) ´ë¿ì°Ç¼³ Åä¸ñ¿¬±¸ÆÀ;Çѱ¹Çؾ翬±¸¿ø ¿¬¿¬°³¹ß¿¬±¸º»ºÎ;´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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½Ç³»½ÃÇèÀº ´Ù¾çÇÑ ÀÀ·ÂÁ¶°Ç°ú ¹è¼öÁ¶°ÇÀÇ ¸ð»ç°¡ °¡´ÉÇϹǷΠ»ó¿ë À¯ÇÑ¿ä¼Ò ÇØ¼®ÇÁ·Î±×·¥ÀÇ ÀԷº¯¼ö »êÁ¤¿¡ ÇʼöÀûÀÎ ¿ä¼Ò°¡ µÇ³ª ½Ã·áÀÇ ¿î¼Û, ½Ã·áÃßÃâ, Æ®¸®¹Ö, ÇÔ¼öºñ ¼Õ½Ç, ÀÀ·ÂÀÌ¿ÏÀ¸·Î ÀÎÇÑ ±³¶õ°ú äÃë°¡ °üÀÔ½ÃÀÇ ±³¶õÀ¸·Î ¾çÁúÀÇ ½Ã·á¸¦ ¾ò´Âµ¥ ÇѰ谡 ÀÖ´Ù. ÀÌ·¯ÇÑ ÇѰ踦 ±Øº¹Çϱâ À§ÇÏ¿© ±³¶õ¿¡ µû¸¥ ½Ã·áÀÇ º¯È­¸¦ ÀÌÇØÇϰí À̸¦ ½Ç³» ½ÃÇè °á°ú·ÎºÎÅÍ ÀԷº¯¼ö »êÁ¤¿¡ Àû¿ëÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» ã¾Æ³»´Â °ÍÀÌ ÇÊ¿äÇÏ´Ù. µû¶ó¼­ º» ¿¬±¸¿¡¼­´Â Á¤È®ÇÑ ÀÔ·ÂÁ¤¼öÀÇ »êÁ¤ÀÌ ÇʼöÀûÀÎ ¿¬¾àÁ¡¼ºÅäÀÇ ±³¶õ¿¡ ´ëÇÑ ¿µÇâÀ» ÆÄ¾ÇÇϰíÀÚ Á¤±Ô¾Ð¹Ð Á¡¼ºÅäÀÇ ±³¶õ¿¡ µû¸¥ °­µµ ¹× °­¼ºÀÇ º¯È­¸¦ »ðÃà½ÃÇè±â¸¦ ÀÌ¿ëÇÑ ÀÀ·Â°æ·Î½ÃÇèÀ» ÅëÇÏ¿© ÆÄ¾ÇÇÏ¿´´Ù. ±× °á°ú, ±³¶õÀÇ Á¤µµ°¡ °­µµ¿¡ ¹ÌÄ¡´Â ¿µÇâÀº Å©Áö ¾Ê¾ÒÀ¸³ª, Àü´Ü°­¼º°è¼ö¿Í Ä¿Çøµ°­¼º°è¼öÀÇ º¯Çü·ü¿¡ µû¸¥ °¨¼è °æÇâ¿¡´Â Å« ¿µÇâÀ» ¹ÌÄ¡´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Laboratory tests are generally used to determine the input parameters for the selected constitutive models controlling various stress and drainage conditions, but have disadvantages in that the tests are performed on the samples obtained from the bore hole which are prone to be disturbed by various factors such as the tube penetrations, sample preparations and storage. To overcome these disadvantages, it is necessary to understand the effect of disturbance on the stiffness of the sample, especially the normally consolidated clays which are generally considered as soft clays. Therefore, in this study triaxial tests are performed on the normally consolidated kaolinite to evaluate the sample disturbance effects on the stiffness and to determine the field representative input parameters. The stress path results show that the shear and coupling modulus degradation patterns with strain are affected seriously by the disturbance. However, the strengths of the normally consolidated kaolinite are little influenced by the disturbance.
 
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Clays;Disturbance;Stiffness;Stress path;Triaxial test;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.27, no.7, 2011³â, pp.69-79
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201128563052793)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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