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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.2, 2003³â, pp.27-38
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ȰdzÈÀÜÀûÅäÀÇ ºÒÆ÷ÈÀü´Ü°µµ¿¡ ¹ÌÄ¡´Â ¼ø¿¬Á÷ÀÀ·ÂÀÇ ¿µÇâ
( The Influence of Net Normal Stresses on the Shear Strength of Unsaturated Residual Granite Soils ) |
| ¼º»ó±Ô;ÀÌÀθð; °í·Á´ëÇб³ Åä¸ñȯ°æ°øÇаú;°í·Á´ëÇб³ Åä¸ñȯ°æ°øÇаú;
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| º» ¿¬±¸¿¡¼´Â ºÒÆ÷ÈÅäÀÇ Àü´Ü°µµ Ư¼º°ú À̸¦ ¿¹ÃøÇÏ´Â ¸ðµ¨¿¡ ´ëÇØ ´Ù·ç¾ú´Ù. ƯÈ÷, ¼ø¿¬Á÷ÀÀ·Â(net normal stress)ÀÌ Èë¼öºÐ Ư¼º°î¼±¿¡ ¹ÌÄ¡´Â ¿µÇâ°ú ºÒÆ÷ÈÅäÀÇ Àü´Ü°µµ ¹ßÇö¿¡ ¹ÌÄ¡´Â ¿µÇâ¿¡ ´ëÇØ ÁßÁ¡ÀûÀ¸·Î ¿¬±¸ÇÏ¿´´Ù. À̸¦ À§Çؼ ±¹³»¿¡ »êÀçÇØ Àִ ȰdzÈÀÜÀûÅ並 ½Ã·á·Î ÇÏ¿© ºÒÆ÷È»ïÃà¾ÐÃà ½ÃÇè°ú SWCC ½ÃÇè µîÀ» ½Ç½ÃÇÏ¿´À¸¸ç, ƯÈ÷, ¼ø¿¬Á÷ÀÀ·ÂÀ» ÀÏÁ¤ÇÏ°Ô À¯Áö½ÃŲ »óÅ¿¡¼ SWCC¸¦ ±¸ÇÒ ¼ö ÀÖ°Ô ²û ±âÁ¸ÀÇ Àåºñ¸¦ °³·®ÇÏ¿´´Ù. ºÒÆ÷ÈÅäÀÇ Àü´Ü°µµ ½ÃÇè°á°ú¿Í ±âÁ¸ÀÇ °µµ¿¹Ãø¸ðµ¨¿¡ ÀÇÇØ ¿¹ÃøµÈ °µµÆ÷¶ô¼±À» ºñ±³ÇØ º» °á°ú, Èë¼öºÐ Ư¼º°î¼±°ú ÈíÀη (matric suction)À» ÇÑ ÃàÀ¸·Î ÇÏ´Â °µµÆ÷¶ô¼±ÀÇ ±â¿ï±â°¡ ¼ø¿¬Á÷ÀÀ·Â¿¡ µû¶ó º¯ÈÇÔÀ» ¹ß°ßÇÒ ¼ö ÀÖ¾ú´Ù. µû¶ó¼, º¸´Ù Á¤È®ÇÏ°Ô ºÒÆ÷ÈÅäÀÇ Àü´Ü°µµ Æ÷¶ô¼±À» ¹¦»çÇϱâ À§Çؼ´Â ÈíÀη¿¡ ¹ÌÄ¡´Â ¼ø¿¬Á÷ÀÀ·ÂÀÇ ¿µÇâÀÌ °í·ÁµÇ¾î¾ß ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. º» ³í¹®¿¡¼´Â ±â ¾ð±ÞÇÑ ³»¿ë¿¡ ±Ù°ÅÇÏ¿© ¼öÁ¤µÈ ºÒÆ÷ÈÅä Àü´Ü°µµ ¿¹Ãø¸ðµ¨À» Á¦¾ÈÇÏ¿´´Ù. |
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| The characteristics and prediction model of the shear strength of unsaturated residual granite soils were studied in this paper. In order to investigate the influence of the net normal stress on the shear strength, unsaturated triaxial tests and SWCC tests were carried out by varying the net normal stress. Experimental data for unsaturated shear strength tests were compared with predicted shear strength envelopes obtained from existing prediction models. It was shown that the soil-water characteristic curve and the shear strength of the unsaturated soil varied with the change of the net normal stress. Therefore, to achieve a truly descriptive shear strength envelope for unsaturated soils, the effect of the normal stress on the contribution of matric suction to the shear strength has to be taken into consideration. In this paper, a modified prediction model f3r the unsaturated shear strength was proposed. |
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| Ű¿öµå |
| Net normal stress;Prediction model;Soil-water characteristic curve;Unsaturated shear strength; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.2, 2003³â, pp.27-38
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921640676)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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