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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.1, 2008³â, pp.15-23
°³º°¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÑ ¼â¼®Àç·áÀÇ Á÷Á¢Àü´Ü½ÃÇè ¸ðµ¨¸µ
( Modeling Direct Shear Test of Crushed Stone Using DEM )
Á¶³²°¢;À¯Ãæ½Ä;À̴뿵; ¾Ë¹öŸ´ëÇб³;¼º±Õ°ü´ëÇб³ Åä¸ñȯ°æ°øÇаú;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø;
 
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º» ¿¬±¸¿¡¼­´Â °³º°¿ä¼Ò¹ý¿¡ ±Ù°ÅÇÑ »ó¿ë ¼öÄ¡ÇØ¼® ÇÁ·Î±×·¥ÀÎ PFC2D¸¦ ÀÌ¿ëÇÏ¿© Á¶¸³ÀçÀÎ ¼â¼®ÀÇ Àü´ÜƯ¼º ¸ðµ¨¸µÀ» ¼öÇàÇÏ¿´´Ù. º» ¿¬±¸¸¦ ÅëÇÏ¿© ±âÁ¸ÀÇ ¿¬¼Óü ÇØ¼®¿¡¼­ °í·ÁÇϱâ Èûµç Á¶¸³Áú Àç·áÀÇ ÀÔµµºÐÆ÷ ¹× °ø±Ø, ºÒ±ÔÄ¢ÇÑ Çü»óÀ» ¸ðµ¨¸µ ÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ, ´ëÇüÁ÷Á¢Àü´Ü½ÃÇèÀ» ¼öÇàÇÑ ½ÇÇè°á°ú¿Í ºñ±³¸¦ ÅëÇØ ÀÔÀÚÆ¯¼º°ú °ü·ÃÇÑ Á¶¸³Áú Àç·áÀÇ °íÀ¯ Ư¼ºÀ» º» ¿¬±¸¿¡¼­ ¸ðµ¨¸µÇÑ ºÒ¿¬¼Óü ¸ðµ¨¸µÀ¸·Î ¸ð»çÇÒ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ÀÌ·¯ÇÑ ¸ðµ¨¸µ ±â¹ýÀº ÇâÈÄ ´Ù¾çÇÑ ÀÔµµ ¹× °ø±ØÆ¯¼ºÀ» °®´Â Á¶¸³Áú Àç·áÀÇ ÇöÀå °­µµ Ư¼ºÀ» ¿¹ÃøÇϴµ¥ µµ¿òÀÌ µÉ ¼ö ÀÖ´Ù.
In this study, modeling shear characteristics of a coarse material mainly containing crushed stones were implemented using PFC2D, a commercially available code based on DEM(Discrete Element Method). Using the DEM code, this study provides the methodology considering the shear characteristics due to a irregular grain shape, GSD(Grain Size Distribution) and porosity of coarse material which are not effectively incorporated in conventional continuum numerical codes. Direct shear test was simulated for the GSD and porosity generated sample using the code and the simulated results showed very good agreement with the laboratory test results. The current modeling approach can be applied to other coarse materials having various GSD and porosities. Using such application, prediction of the strength characteristics of coarse material in field scale would be possible, which is limited in laboratory scale so far.
 
Ű¿öµå
Crushed stone;DEM;Derect shear test;Modeling;PFC2D;Porosity;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.1, 2008³â, pp.15-23
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200810737054085)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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