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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.2, 1999³â, pp.181-194
È­°­Ç³È­ÅäÀÇ Àü´ÜÁ¤¼ö$(c,varphi)$ Æò°¡
( An Evaluation of Shear Strength Parameters$(c,varphi)$ for Weathering Decomposed Granite Soil )
À̹®¼ö;À̱¤Âù; Àü³²´ëÇб³ ³ó°ú´ëÇÐ ³ó°øÇаú;Àü³²´ëÇб³ °ø±â¿¬;
 
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º» ¿¬±¸´Â 6°³¼Ò¿¡¼­ äÃëÇÑ ±³¶õ ¹× ºÒ±³¶õ È­°­Ç³È­Åä¿¡ ´ëÇØ È­ÇÐÀû ¼ººÐºÐ¼®, ¹°¸® ¹× Á÷Á¢Àü´Ü½ÃÇè µîÀ» ¼öÇàÇÏ¿© È­°­Ç³È­ÅäÀÇ Àü´ÜÁ¤¼ö°¡ dzȭµµ¿Í Àü´Üº¯À§ µî¿¡ ¾î¶°ÇÑ °ü°è°¡ Àִ°¡¸¦ °íÂûÇÑ °ÍÀÌ´Ù. ±× °á°ú È­°­Ç³È­ÅäÀÇ Àü´ÜÁ¤¼ö´Â dzȭµµ¿Í Æ÷È­Æ÷°¡ Ŭ¼ö·Ï Àü´ÜÁ¤¼ö°¡ ÀÛ°Ô ³ªÅ¸³ª°í ¿¬Á÷ÇÏÁß 40kPaÀÌÇÏ¿¡¼­´Â Mohr-CoulombÀÇ ÆÄ±«Æ÷¶ô¼±ÀÌ Á÷¼±ÀÌ ¾Æ´Ï°í °î¼± ³»Áö Æ÷¹°¼± ÇüŸ¦ º¸À̸ç Åë»óÀÇ ½ÃÇè¹ý¿¡¼­ ¾òÀº Á¡Âø·Âº¸´Ù 1/2Á¤µµ°¡ ÀÛ°Ô ³ªÅ¸³µ´Ù. ¶ÇÇÑ È­°­Ç³È­ÅäÀÇ È­ÇÐÀû dzȭÁö¼ö°¡ 21~31.26ÀÇ ¹üÀ§¿¡ ´ëÀÀµÇ°í SueokaºÐ·ù¹ý¿¡ ÀÇÇÏ¸é ¿ÏÀü È­°¨Ç³È­Åä·Î ÆÇ¸íµÇ¾ú´Ù. ±×¸®°í ºÒÆ÷È­ È­°­Ç³È­Åä¿Í Æ÷È­ È­°­Ç³È­ÅäÀÇ °­µµ¸¦ ºñ±³ÇÒ ¶§ Æ÷È­½Ã·á°¡ Àü´Ü°­µµÀÇ ÀúÇϰ¡ Å©°í ´ÙÀÏ·¯ÅϽÃÀÇ º¯È­°¡ ÇöÀúÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ, ±¤ÁÖ Ç³¾ÏÁö±¸ È­°­ÅäÀÇ Àü´Ü°­µµ´Â ${( au)_{sat}= 1.0( au)_{unsat}-12.48}$ÀÇ ½ÄÀ¸·Î ±Ù»çÈ­½Ãų ¼ö ÀÖ¾úÀ¸¸ç ´Ù¸¥ È­°­Ç³È­Åä¿¡¼­µµ À¯»çÇÑ °á°ú¸¦ º¸¿´´Ù.
Both the chemical components and the physical and mechanical properties of the compacted and undisturbed weathered granite soils were estimated to investigate the influences of the degree of weathering and saturation on the shear strength. The weathered granite soils used in this study were taken from six different sites in Korea. The results showed that the shear strength of weathered granite soil decreased with increasing the degree of weathering and saturation. Under the normal stresses less that 40kPa, the shape of Mohr-Coulomb failure envelope followed curved or hyperbolic relationship and a half of cohesion value obtained by the common shear test was observed. Using the Sueoka's method, the values of CWI were ranged from 21.5 to 31.26 which can be characterized as a completely weathered granite soil. Large decrease in shear strength and remarkable variation in dilatancy were observed in saturated granite soil compared to unsaturated soil. It was also found that the shear strength of undisturbed weathered granite soil of Pungam site can be expressed approximately by the equation of ${( au)_{sat}= 1.0( au)_{unsat}-12.48}$ and this equation can be extended to the other sites considered in this study.
 
Ű¿öµå
Undisturbed decomposed granite;Chemical weathering index;Strength parameters;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.2, 1999³â, pp.181-194
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749147)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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