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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.3, 2003³â, pp.15-22
ºñµî¹æ¼º Á¡¼ºÅä¿¡ À־ º¯Çü·ü¼Óµµ ÀÇÁ¸Àû ±¸¼º¸ðµ¨
( Strain Rate-dependent Model for Anisotropic Cohesive Soils )
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Áö¹ÝÀÇ ½ÇÁ¦ °Åµ¿À» º¸´Ù Á¤È®ÇÏ°Ô Ç¥ÇöÇϱâ À§ÇÑ, ÀÀ·ÂÀÇ ºñµî¹æ¼º ¹× ½Ã°£ÀÇÁ¸Àû(time-dependent) °Åµ¿ÀÇ ÀûÀýÇÑ ¹¦»ç´Â ƯÈ÷ Á¡¼ºÅäÀÇ ÀÀ·Â-º¯Çü·ü °ü°è¸¦ ³ªÅ¸³»´Â ±¸¼º°ü°è½Ä¿¡ À־ Áß¿äÇÑ °ü½É»çÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ÀûÀº ¸ðµ¨Á¤¼ö·Î ÀÀ·ÂÀÇ ºñµî¹æ¼ºÀ» ¹¦»çÇÒ ¼ö ÀÖ´Â ¼Ò¼º ±¸¼º°ü°è½Ä°ú, ´ëÇ¥Àû ½Ã°£ÀÇÁ¸Àû °Åµ¿ÀÎ º¯Çü·ü ¼Óµµ È¿°ú¸¦ °£ÆíÇÏ°Ô Ç¥ÇöÇÒ ¼ö ÀÖ´Â º¯Çü·ü¼Óµµ ÀÇÁ¸Àû ±¸¼º°ü°è½ÄÀ» ÀÏ¹Ý Á¡¼ºÀ̷п¡ ÀÔ°¢ÇÏ¿© Á¶ÇÕÇÏ¿´´Ù. °á·ÐÀûÀ¸·Î Á¦¾ÈµÈ ÇϳªÀÇ ºñµî¹æ¼º º¯Çü·ü¼Óµµ ÀÇÁ¸Àû ±¸¼º°ü°è½ÄÀº ºñ±³Àû ¸ðµ¨Á¤¼ö°¡ Àû°í, º¯Çü·ü¼Óµµ°¡ ¹Ù²ð ¶§¸¶´Ù ¸ðµ¨Á¤¼ö °ªÀ» ´Ù½Ã °áÁ¤ÇÒ Çʿ䰡 ¾ø´Ù´Â ÀåÁ¡ÀÌ ÀÖ´Ù. Á¦¾ÈµÈ ±¸¼º¸ðµ¨Àº ÀÎÀ§ÀûÀ¸·Î Á¦ÀÛµÈ ±ÕÁúÇÑ ½Ã·á¸¦ ÀÌ¿ëÇÑ ½Ç³»½ÃÇèÀ» ÅëÇÏ¿© °ËÁõµÇ¾úÀ¸¸ç, »ó¼¼ °Åµ¿ ¹× ¹®Á¦Á¡À» °íÂûÇÏ¿´´Ù.
The appropriate description of the stress-anisotropy and time-dependent behavior of cohesive soils is very important in representing the real soil behavior. In this study, two constitutive relations have been incorporated based on the generalized viscous theory: one is the plastic constitutive relation adopted to capture the stress-anisotropy with a few model parameters; the other is the rate-dependent constitutive relation adopted to describe the strain rate-dependent behavior, an important time-dependent behavior in cohesive soils. The incorporated and proposed constitutive model has relatively a few model parameters and their values need not to be re-evaluated at different strain rates. The proposed model has been verified and investigated with the anisotropic triaxial test results obtained by using the artificial homogeneous specimens.
 
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Constitutive relation;Strain rate-dependent;Stress-anisotropy;Time-dependent;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.3, 2003³â, pp.15-22
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921763502)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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