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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.6, 2010³â, pp.21-28
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¿ÏÀü Ç³ÈµÈ È°Ç³ÈÅäÀÇ ºÒÆ÷È ÀÀ·Â-º¯Çü·ü °Åµ¿ Ư¼º
( The Unsaturated Stress Strain Behavior of CDG (Completely Decomposed Granite) Soils ) |
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| ȰdzÈÅä´Â °¡Àå ÀϹÝÀûÀÎ ÈëÀÇ Á¾·ùÀÌ´Ù. ºñµî¹æ¼º ȰdzÈÅäÀÇ ÀÀ·Â-º¯Çü-°µµ¸¦ ÃøÁ¤ÇÏ´Â °ÍÀº »ç¸é, ¿Ëº®, ±¼ÂøÀÇ º¯Çü°ú ¾ÈÁ¤À» À§ÇÏ¿© ¸Å¿ì Áß¿äÇÏ´Ù. ºÒÆ÷È °µµÆ¯¼ºÀ» ¾Ë±â À§ÇÏ¿© ÀÏ·ÃÀÇ ºÒÆ÷È ¹è¼ö»ïÃà¾ÐÃà½ÃÇèÀ» ½ÃÇàÇÏ¿´´Ù. ½ÃÇè½Ã·á´Â ´ÙÁü¹æÇâ¿¡ °¢°¢ 0, 45, 90µµÀÇ Ãà¹æÇâ°¢À» °®µµ·Ï ÇÏ¿´´Ù. µî¹æ¾ÐÃàÀ» ¹Þ´Â ½Ã·áÀÇ ÃຯÇü·üÀº ´ÙÁü¹æÇâ¿¡ ÀÇÇÏ¿© Å©°Ô ¿µÇâÀ» ¹ÞÀ¸¸ç ÀÌÂ÷¾ÐÃà°úÁ¤¿¡´Â ½Ã°£ÀÇÁ¸¼ºÀº ´ÙÁü¹æÇâ°ú °ü°è°¡ °ÅÀÇ ¾ø´Ù. »ïÃà¾ÐÃà°µµ¿Í º¯Çü¿¡ ¹ÌÄ¡´Â ´ÙÁü¹æÇâÀÇ ¿µÇâÀº Àú±¸¼Ó¾Ð°ú Æ÷ÈÅä¿¡¼ ´õ È®¿¬ÇѰÍÀ¸·Î ³ªÅ¸³µ´Ù. ´ÙÁü¹æÇâ°úÀÇ °¢µµ¸¦ °í·ÁÇÏ´Â ºÒÆ÷ÈȰdzÈÅäÀÇ °µµ¸¦ ÃßÁ¤ÇÏ´Â ¹æ¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. |
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| Decomposed granite soil is the most common type of soils. The measurement of the stress-strain-strength behavior of anisotropic decomposed granite soils is very important for the deformation and stability analysis of slopes, retaining walls, excavations. A series of unsaturated-drained triaxial compression tests were performed to know unsaturated strength properties. The sample had three different angles of the axial (major principal) direction to the sedimentation plane (compaction plane): 0, 45 and 90 degrees. The compression strain of specimens subjected to an isotropic compression was strongly influenced by the sedimentation angle. In addition, the time dependence was independent of the sedimentation angle in relation to the deformation behavior during the secondary compression process. The effect of the sedimentation angle on the triaxial compression strength and deformation was clearly shown with low confining stress. The effect of the sedimentation angle on the compressive strength and deformation was more evident in saturated specimens. A new method of predicting the shear strength of unsaturated decomposed granite soils, considering compaction angles, was proposed. |
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| Anisotropy;Decomposed granite soils;Unsaturated strength;Sedimentation angle; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.6, 2010³â, pp.21-28
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201030853095379)
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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