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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.6, 2004³â, pp.75-83
»çÁúÅäÀÇ Ã¼ÀûÆØÃ¢À» °í·ÁÇÑ ºñµî¹æ°æÈ­ ±¸¼º¸ðµ¨ : I. Á¤½ÄÈ­
( An Anisotropic Hardening Constitutive Model for Dilatancy of Cohesionless Soils : I. Formulation )
¿À¼¼ºØ;¹ÚÇöÀÏ;±Ç¿À±Õ; ¿µ³²´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;°è¸í´ëÇб³ Åä¸ñ°øÇаú;
 
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º» ³í¹®¿¡¼­´Â »çÁúÅäÀÇ Ã뼺Àû ÀÀ·Â-º¯Çü·ü °ü°è¿Í Àü´Ü½Ã üÀûÆØÃ¢À» °í·ÁÇÒ ¼ö ÀÖ´Â ±¸¼º¸ðµ¨¿¡ ´ëÇÑ ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. Á¦¾ÈµÈ ¸ðµ¨Àº ÀÏ¹Ýµî¹æ°æÈ­±ÔÄ¢¿¡ ÀǰÅÇÑ ºñµî¹æ °æÈ­±ÔÄ¢À» Àû¿ëÇÏ¿´À¸¸ç, Ç׺¹¸éÀÇ ÇüÅ´ ÀÀ·Â°ø°£¿¡¼­ ¿øÅëÇüÀ¸·Î ³ªÅ¸³ª´Â ´Ü¼øÇÑ ÇüÅ·Π½Ç¿ëÀûÀ¸·Î Àû¿ëÇÏ±â Æí¸®Çϵµ·Ï ÇÏ¿´´Ù. ¶ÇÇÑ À¯µ¿±ÔÄ¢À» ´Ü¼øÈ­ÇÏ¿© ±¸Ã¼ÀûÀÎ ÆØÃ¢·ü ÇÔ¼ö¸¦ ÀÌ¿ëÇÏ¿© Á¤ÀÇÇÏ¿´´Ù. ¶ÇÇÑ °¡»óÀûÀΠ÷µÎÀÀ·Âºñ¸¦ Á¤ÀÇÇÏ¿© Ã뼺Àû ÀÀ·Â-º¯Çü·ü °ü°è¸¦ ¸ðµ¨¸µÇÏ´Â °ÍÀÌ °¡´ÉÇÏ¿´´Ù. ÀÌ·¯ÇÑ ±¸¼º¸ðµ¨Àº ¼öÇÐÀû Á¤½ÄÈ­¸¦ ÇÑ ÈÄ ½ÇÇèÀÚ·á¿Í ºñ±³Çϵµ·Ï ÇÁ·Î±×·¥À» ±¸ÇöÇÏ¿´´Ù. µ¿¹Ý³í¹®¿¡¼­´Â »ïÃà½ÇÇè°á°ú¿Í ºñ±³ÇÏ¿© °ËÁõÇÒ °ÍÀÌ´Ù.
This study is focused on the constitutive model in order to represent brittleness and dilatancy of cohesionless soils. The constitutive model was proposed on the basis of an anisotropic hardening rule with generalized isotropic hardening rule. The shape of yield surface is a simple cylinder type in stress space and it makes the model practically useful. Flow rule was approximated by a concrete function on dilatancy. A peak stress ratio was defined to model brittle stress-strain relationships. The proposed model was formulated and implemented to calculate the stress-strain relationship from triaxial tests. In the companion paper the proposed model will be verified by comparison with the triaxial test results.
 
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Brittleness;Constitutive model;Dilatancy;Effective stress mode;Generalized isotropic hardening rule;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.6, 2004³â, pp.75-83
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922634108)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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