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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.6, 2005³â, pp.81-91
´ëÇüÁ÷Á¢Àü´Ü½ÃÇèÀ» ÀÌ¿ëÇÑ Á¶¸³Àç·áÀÇ Àü´Ü°Åµ¿ Ư¼º (I)
( Behavior of Shear Strength of Coarse Grained Materials Based on Large Scale Direct Shear Test (I) )
ÀÌ´ë¼ö;Á¶°æ¿­;È«¼º¿¬;Á¶È­°æ;Ȳ¼ºÃá; ÇÑÀü Àü·Â¿¬±¸¿ø;ÇÑÀü Àü·Â¿¬±¸¿ø;ÇÑÀü Àü·Â¿¬±¸¿ø;ÇÑÀü Àü·Â¿¬±¸¿ø;°æÁÖ´ëÇб³;
 
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"Á¶¸³Áú Åä¸ñÀç·á"¶ó ÇÔÀº ¼â¼® ¶Ç´Â ÀÚ°¥ µîÀ» ÀÏÄ´ ¸»·Î½á, Á¶¸³Àç·á¸¦ Æ÷ÇÔÇÏ´Â Áö¹ÝÀÇ °Åµ¿Àº Å« ÀÔÀÚÀÇ ¿µÇâ¿¡ ÀÇÇØ ±âÁ¸ÀÇ ÅäÁú¿ªÇÐ ÀÌ·ÐÀ¸·Î´Â ±× Ư¼ºÀ» ¸íÈ®È÷ ¼³¸íÇϱâ´Â °ï¶õÇϱ⿡ ÀÌ¿Í °°Àº Å« ÀÔÀÚÀÇ ¿µÇâÀ» ÆÄ¾ÇÇϱâ À§Çؼ­´Â ±×¿¡ ¸Â´Â ´ëÇü½ÃÇèÀÌ ÇʼöÀûÀ̶ó ÇϰڴÙ. ÀÌ¿¡, ¼±Ç࿬±¸(ÀÌ´ë¼ö µî, 2005)¿¡¼­ Á¶¸³Àç·áÀÇ °øÇÐÀû Ư¼ºÀ» °áÁ¤Áþ´Â ÁÖ¿äÇÑ ÀÎÀÚ·Î ¹àÇôÁø ÃÖ´ë ÀÔÀÚÀÇ Å©±â, ÇÔ¼öºñ, ½ÃÇè¹Ðµµ ¹× ±Õµî°è¼öÀÇ Å©±â µîÀÌ ±¹³»ÀÇ Á¶¸³Àç·áÀÇ Àü´Ü°­µµ¿¡ ¾î´À Á¤µµ ¿µÇâÀ» ÁÖ´ÂÁö¸¦ ´ëÇüÁ÷Á¢Àü´Ü½ÃÇè±â(È«¼º¿¬ µî, 2004)¸¦ ÀÌ¿ëÇÏ¿© È®ÀÎÇÏ¿´À¸¸ç, ±× Áß º» °í¿¡¼­´Â ÃÖ´ëÀÔ°æÀÇ Å©±â¿Í ÇÔ¼öºñÀÇ º¯È­°¡ Àü´Ü°­µµ¿¡ ÁÖ´Â ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù. ¾Æ¿ï·¯, °¢ ¼öÁ÷ÀÀ·Âº°·Î ÇѰè»óÅ¿¡¼­ Á¶¸³Àç·á°¡ °®°í ÀÖ´Â ¸¶Âû°è¼ö¸¦ Wood(1998)°¡ Á¦¾ÈÇÑ ¹æÁ¤½ÄÀ» ÀÌ¿ëÇÏ¿© »êÃâÇÏ¿´À¸¸ç, ½ÃÇè¿¡ »ç¿ëÇÑ Àç·á´Â °æ±â¿Í ÃæÃ»Áö¿ª ¼®»ê¿¡¼­ »ý»êÁßÀÎ Á¶¸³Àç·áÀÌ´Ù. ½ÃÇè°á°ú ÃÖ´ëÀÔ°æ 50.8mmÀÇ Àü´Ü°­µµÀÇ Å©±â°¡ 76.3mmÀÇ °ªº¸´Ù »ó´ëÀûÀ¸·Î Å©°Ô ³ªÅ¸³µÀ¸¸ç, °ø±â°ÇÁ¶»óÅÂÀÇ Àç·á°¡ Æ÷È­»óÅÂÀÇ °ªº¸´Ù Å« Àü´Ü°­µµ¸¦ °®´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÇÑÆí, Á¶¸³Áú Åä¸ñÀç·á°¡ °®°í ÀÖ´Â ÇѰè»óÅ¿¡¼­ÀÇ ¸¶Âû°è¼ö´Â °¢ ½ÃÇèÁ¶°Çº°·Î $1.0sim1.6$ÀÇ ¹üÀ§·Î ³ªÅ¸³µ´Ù.
Coarse grained material' refers to crushed stones or gravels, and the behaviour of soil containing coarse grained material is not easily defined using the conventional soil mechanics theory due to the influences of large particles, therefore large scale test is essential to investigate their effects. Previous studies have identified the major factors affecting the properties of coarse grained materials by using large scale shear testing apparatus, such as maximum particle size, water content, density and uniformity coefficients. In this paper, the effect of variation of maximum particle size and water content on shear strength was analyzed from the results of large scale shear test. In addition, the fiction coefficient at critical state per vertical load was estimated using the equation proposed by Wood (1998). The sample for the test was obtained from the local quarry sites. Tests results show that the shear strength for 50.8 m maximum particle size is relatively larger than that of 76.3 m and air-dry sample has larger shear strength than saturated sample. In the meantime, the friction coefficient at critical state shows $1.0sim1.6$ according to the test conditions.
 
Ű¿öµå
Coarse grained;Friction coefficient;Large scale shear test;Quarry;Shear strength;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.6, 2005³â, pp.81-91
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200504840676289)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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