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Çѱ¹Áö¹Ý°øÇÐȸ / v.14, no.3, 1998³â, pp.47-62

( Disturbed State Modeling for Fully Saturated Sand under Dynamic Load )
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º» ¿¬±¸¿¡¼­ Á¦¾ÈÇÑ ±³¶õ»óÅ °³³ä (disturbed state concept, DSC)Àº º¯ÇüÁßÀÎ Àç·á´Â »ó´ëÀûÀ¸·Î ¼Õ»óµÇÁö ¾ÊÀº »óÅÂ(relative intact state: Rl)¿Í ¿ÏÀüÈ÷ ÆÄ±«µÈ »óÅÂ(fully adjusted state. FA)°¡ È¥ÇյǾî ÀÖ´Ù´Â ±âº»°¡Á¤¿¡ ±âÃʸ¦ µÎ°í ÀÖ´Ù. ¿©±â¿¡¼­ »ç¿ëµÈ µÎ °¡Áö »óÅÂ, Áï Rl»óÅÂ¿Í FA»óÅ´ Àç·áÀÇ ÆÄ±«Á¤µµ¸¦ Á¤ÀÇÇÏ´Â ±âÁØÀÌ µÈ´Ù. ÀÌ¿Í °°Àº °³³äÀ» ¹ÙÅÁÀ¸·Î DSC´Â ¹Ýº¹ ÇÏÁßÇÏ¿¡ ÀÖ´Â Æ÷È­»çÁúÅäÀÇ °Åµ¿Æ¯¼º¿¡ ´ëÇÑ'ÅëÇÕµÈ ±¸¼º¹æÁ¤½ÄÀ» Á¦°øÇÑ´Ù. Æ÷È­»çÁúÅä¿¡ ´ëÇÑ º» ¸ðµ¨ÀÇ °è¼öµéÀº ½Ç»ïÃà½Ãø(truly triaxial test)ÀÇ °á°ú¸¦ ÅëÇØ »êÁ¤µÈ´Ù. ¶ÇÇÑ ½Ç³»½ÇÇèÀ» ÅëÇÏ¿© ¾òÀº °á°ú¸¦ ÀÌ¿ëÇÏ¿© º» ¸ðµ¨¿¡ ´ëÇÑ °ËÁõÀ» ¼öÇàÇÏ¿´´Ù. DSC¸ðµ¨À» ÀÌ¿ëÇÑ ¿ªÇؼ® ÇØ¼®´ë»ó ½ÃÇè°á°ú´Â Àü¹ÝÀûÀ¸·Î ÀÏÄ¡µÇ´Â °æÇâÀ» º¸À̰íÀÖ´Ù. º» ¿¬±¸ÀÇ °á°ú¸¦ Åä´ë·Î, DSC ¸ðµ¨Àº µ¿ÇÏÁßÇÏÀÇ ±¸È­ »çÁúÅäÀÇ °Åµ¿Æ¯¼ºÀ» ±Ô¸íÇÒ ¼ö ÀÖ´Ù°í »ç·áµÈ´Ù.
The disturbed state concept (DSC) proposed here is based on the idea that a deforming material element can be treated as a mixture of two constituent parts in the relative intact (Rl) and fully adjusted (FA) states, referred to as reference states. Based on this idea, DSC provides a unified constitutive model for the characteristics of saturated sands under cyclic loading. The model parameters for saturated sands are evaluated by using data from truly triaxial test device, The laboratory test results are also used for the verification of D SC model. In general, the model predictions are found to provide satisfactory correlation with the test results. From the results of this research, it can be stated that the DSC model is capable of characterizing the cyclic behavior of saturated sands under dynamic loading.
 
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Disturbed state concept;Relative intact state;Fully adjusted state;Truly triaxial test device;Saturated sand;Dynamic loading;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.14, no.3, 1998³â, pp.47-62
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920448123)
¾ð¾î : ¿µ¾î
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