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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.5, 2003³â, pp.223-232
DSC¸¦ ÀÌ¿ëÇÑ Åä¸ñ¼¶À¯°¡ Æ÷ÇÔµÈ °æ°è¸éÀÇ º¯ÇüÀ² ¿¬È­ ¸ðµ¨ °³¹ß
( Development of Strain-softening Model for Geosynthetic-involved Interface Using Disturbed State Concept )
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º» ¿¬±¸¿¡¼­´Â DSC¸¦ ÀÌ¿ëÇÑ ±¸¼º¹æÁ¤½ÄÀ» ÀÌ¿ëÇÏ¿© Åä¸ñ¼¶À¯ »çÀÌÀÇ Á¢ÃËÀü´Ü ÀÀ·Â°ú º¯À§¿ÍÀÇ °ü°è¸¦ ¸ðµ¨¸µÇÏ¿´´Ù. DSC ¸ðµ¨Àº µÎ °³ÀÇ ±âÁØ »óÅÂ, Áï »ó´ëÀûÀ¸·Î ¼Õ»óµÇÁö ¾ÊÀº RI »óÅÂ¿Í ¿ÏÀüÈ÷ ÆÄ±«µÈ FA »óÅÂ¿Í ÇѰ¡ÁöÀÇ ±³¶õ ÇÔ¼ö·Î ±¸¼ºµÈ´Ù. º» ¸ðµ¨Àº ÅëÇÕµÈ ¸ðµ¨·Î¼­, RI »óŸ¦ ź¼º-¿ÏÀü ¼Ò¼º ¸ðµ¨, °èÃþÀû ´ÜÀÏ Ç׺¹°î¸é (HiSS) ¸ðµ¨ µî ´Ù¾çÇÑ ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ¸ð»çÇÒ ¼ö ÀÖ´Ù. ÇÑÆí º» ¸ðµ¨Àº ź¼º°ú ¼Ò¼º º¯À§¸¦ µ¿½Ã¿¡ °í·ÁÇÒ ¼ö ÀÖ´Ù´Â ÀåÁ¡À» °¡Áö°í ÀÖ´Ù. 4°¡ÁöÀÇ ´ëÇü Á÷Á¢Àü´Ü ½ÃÇèÀ¸·ÎºÎÅÍ ÃøÁ¤µÈ ÀÚ·á¿Í ÃøÁ¤ÀÚ·á·ÎºÎÅÍ µµÃâµÈ ¸ðµ¨ º¯¼ö¸¦ ÀÌ¿ëÇÏ¿© ÀçÇØ¼®ÇÑ °á°ú¸¦ ¼­·Î ºñ±³ÇÏ¿©, µÑ »çÀÌÀÇ ºñ±³ °á°ú°¡ »ó´çÈ÷ ÀÏÄ¡ÇÔÀ» ¹ß°ßÇÏ¿´À¸¸ç, ƯÈ÷ Ç¥¸éÀÌ ¸Å²ô·¯¿î Áö¿À¸âºê·¹ÀÎÀÇ Á¢Ã˸鿡¼­´Â ¸Å¿ì »ó°ü°ü°è¸¦ º¸¿´´Ù. ºñ·Ï Ç¥¸éÀÌ °ÅÄ£ Áö¿À¸âºê·¹ÀÎÀÌ Æ÷ÇÔµÈ Á¢Ã˸鿡¼­´Â ¿¹Ãø ÃÖ´ë Àü´Ü°­µµ°¡ ½ÇÇè°á°ú¿Í ¾à°£ÀÇ Â÷À̸¦ º¸À̱â´Â ÇÏ¿´Áö¸¸, ÀüüÀûÀ¸·Î º» ¸ðµ¨ÀÌ ÃÖ´ë Àü´ÜÀÀ·ÂÀÌ ³ªÅ¸³ª´Â º¯À§Á¡°ú ´ëº¯Çü¿¡¼­ÀÇ Àü´Ü°­µµ¸¦ »ó´çÈ÷ Á¤È®È÷ ¿¹ÃøÇÏ¿´À¸¸ç, À̸¦ ÅëÇØ º» ¸ðµ¨ÀÌ º¯ÇüÀ² ¿¬È­ Çö»óÀ» º¸ÀÌ´Â Á¢Ã˸é Àü´Ü°Åµ¿ÀÇ ¸ðµ¨¸µ¿¡ À¯¿ëÇÔÀ» È®ÀÎÇÏ¿´´Ù.
In this study, a constitutive model called the disturbed state concept (DSC) was modified to be applied to the interface shear stress-displacement relationship between geosynthetics. The DSC model is comprised of two reference states, namely the relative intact (RI) and the fully adjusted (FA) state, and one function, namely the disturbance function. This model is a unified approach and can allow for various models as an RI state such as elastic-perfectly plastic model, hierarchical model, and so on. In addition, by using this model, the elastic and plastic displacements can be considered simultaneously. Comparisons between the measured data and predicted results through the parameters determined from four sets of large direct shear tests showed good agreements with each other, especially for the smooth geomembrane-involved interface. Although there are slight differences at peak shear strength for textured geomembrane-involved interface, this model can still be useful to predict the position of displacement at peak strength and the large displacement (or residual) shear strength.
 
Ű¿öµå
Disturbed state concept(DSC);Geosynthetic;Interface;Modeling;Shear behavior;Strain-softening effect;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.5, 2003³â, pp.223-232
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921979226)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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