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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.6, 2005³â, pp.127-135
ºÎ»êÁ¡ÅäÀÇ º¯Çü·ü ¼Óµµ ÀÇÁ¸ÀûÀÎ ¾Ð¹ÐƯ¼º
( Strain-rate-dependent Consolidation Characteristics of Busan Clay )
±èÀ±ÅÂ;Á¶»óÂù;Á¶±â¿µ; ºÎ°æ´ëÇб³ ÇØ¾ç°øÇаú;ºÎ°æ´ëÇб³ ÇØ¾ç°øÇаú;ºÎ»ê±¤¿ª½Ã µµ½Ã°³¹ß°ø»ç;
 
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ºÎ»êÁ¡Åä¿¡ ´ëÇÑ º¯Çü·ü ¼Óµµ ÀÇÁ¸ÀûÀÎ ¾Ð¹ÐƯ¼ºÀ» ºÐ¼®Çϱâ À§ÇØ ´Ù¾çÇÑ º¯Çü·ü ¼ÓµµÀÇ ÀÏÁ¤ º¯Çü·ü(CRS) ¾Ð¹Ð½ÃÇè°ú ÇÏÁßÁ¦¾î ¾Ð¹Ð½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ºÎ»êÁ¡Åä¿¡ ´ëÇÑ ½Ç³»½ÃÇè °á°ú¿¡¼­ ¼±Çà¾Ð¹ÐÇÏÁßÀº ¾Ð¹Ð°úÁ¤ µ¿¾È¿¡ À¯¹ßµÇ´Â º¯Çü·ü ¼Óµµ¿¡ ÀÇÁ¸ÀûÀÌ°í ¼±Çà¾Ð¹ÐÇÏÁß¿¡ ´ëÇØ Á¤±ÔÈ­½ÃŲ ¾Ð¹Ð°î¼±Àº À¯ÀÏÇÏ´Ù´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. CRS ½ÃÇè¿¡¼­ ¾ò¾îÁø ¾Ð¹Ð°è¼ö ¹× Åõ¼ö°è¼ö´Â Á¤±Ô¾Ð¹Ð¿µ¿ª¿¡¼­ º¯Çü·ü ¼Óµµ¿¡ °ü°è¾øÀÌ ÀÏÁ¤ÇÑ °ª¿¡ ¼ö·ÅÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ÇÏÁßÁ¦¾î ¾Ð¹Ð½ÃÇèÀ» ÅëÇØ¼­ ÀüÀÀ·ÂÀÌ ÀÏÁ¤ÇÑ »óÅ¿¡¼­ °£±Ø¼ö¾ÐÀÌ Áõ°¡ÇÏ´Â Mandel-Cryer È¿°ú¸¦ º¼ ¼ö ÀÖ¾ú´Ù. ±×¸®°í Àå½Ã°£ÀÇ ÇÏÁßÁ¦¾î ¾Ð¹Ð½ÃÇèÀ» ÅëÇØ ¼±Çà¾Ð¹ÐÇÏÁß ºÎ±Ù¿¡¼­ Èë ±¸Á¶ÀÇ ºØ±«·Î ÀÎÇÏ¿© ±Þ°ÝÇÑ °£±Ø¼ö¾ÐÀÇ Áõ°¡Çö»óÀÌ °üÂûµÇ¾ú´Ù.
In order to analyze effects of strain rate on consolidation characteristics of Busan clay, a series of constant rate of strain (CRS) consolidation tests with different strain rate and incremental loading tests (ILT) were performed. From experimental test results on Busan clay, it was found that the preconsolidation pressure was dependent on the corresponding strain rate occurring during consolidation process. Also, consolidation curves normalized with respect to preconsolidation pressure gave a unique stress-strain curve. Coefficient of consolidation and permeability estimated from CRS test had a tendency to converge to a certain value at normally consolidated range regardless of strain rate. An increase in excess pore pressure was observed after the end of loading without change of total stress on the incremental loading test, which phenomenon is called Mandel-Cryer effect. It was also found that rapid generation of excess pore pressure took place due to collapse of soil structure as effective stress approached to preconsolidation pressure.
 
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Consolidation;CRS test;Incremental loading test;Prconsolidation pressure;Strain rate;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.6, 2005³â, pp.127-135
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200504840676461)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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