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Çѱ¹Áö¹Ý°øÇÐȸ / v.13, no.4, 1997³â, pp.177-198
È­°­ÅäÀÇ Àü´Ü°­µµ ¹× º¯ÇüƯ¼º
( A Characteristics of Shear Strength and Deformation of Decomposed Granite Soil )
¹Úº´±â;À̰­ÀÏ; Á¤È¸¿ø, Àü³²´ëÇб³ Åä¸ñ°øÇаú;Á¤È¸¿ø, ¼Û¿øÀü¹®´ëÇÐ Åä¸ñ°ú ºÎ±³¼ö, Á¤È¸¿ø, ´ëÁø´ëÇб³ Åä¸ñ°øÇаú ÀüÀÓ°­»ç, Á¤È¸¿ø, Àü³²´ëÇб³ ´ëÇпø ¹Ú»ç°úÁ¤, Á¤È¸¿ø, Àü³²´ëÇб³ ´ëÇпø;
 
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È­°­Åä´Â ÀÏ¹Ý ÅðÀûÅä¿Í´Â ´Þ¸® dzȭµµ, ÀÔÀÚÆÄ¼â¼ºµî ½Ã·áÀÇ Ãʱâ»óÅ¿¡ µû¶ó Àü´Ü°Åµ¿À» ´Þ¸®Çϴ Ư¼ºÀ» °¡Áö¹Ç·Î °¢ °æ¿ì¿¡ ´ëÇÑ ÀÀ·Â-º¯Çü·ü °ü°è¸¦ ¹àÈ÷°í Àü´Ü°­µµÀÇ º¯È­Æ¯¼ºÀ» Á¶»çÇÒ Çʿ䰡 ÀÖ´Ù. À̿Ͱ°Àº °üÁ¡¿¡¼­ º» ¿¬±¸¿¡¼­´Â ¸ð¾ÏÁ¶¼º¼ººÐ ¹× dzȭµµ¸¦ ´Þ¸®ÇÏ´Â 4°³Áö¿ªÀÇ È­°­Å並 äÃëÇÏ¿© ºÒ±³¶õ ¹× ±³¶õ(Á¤Àû´ÙÁü)»óÅ¿¡¼­ Á÷Á¢Àü´Ü½ÃÇè°ú »ïÃà¾ÐÃà½ÃÇè(CU, CD)À» ¼öÇàÇÏ¿´´Ù. ÀÌ °á°ú ºÒ±³¶õÈ­°­ÅäÀÇ ÀÀ·Â-º¯Çü·ü°Åµ¿Àº ±¸¼Ó¾ÐÀÌ ÀÛÀ»¶§´Â °ú¾Ð¹ÐÁ¡ÅäÀÇ ÀÀ·Â°æ·Î°Åµ¿Ã³·³ °æÈ­¿¡¼­ ¿¬È­°Åµ¿À», ±³¶õÈ­°­Åä´Â dzȭµµ¿¡ °ü°è¾øÀÌ ÅðÀûÁ¡Åä¿Í °°Àº °æÈ­-ÀÏÁ¤°Åµ¿À» ³ªÅ¸³»¾ú´Ù. ¶ÇÇÑ, Åë»óÀûÀÎ Á÷Á¢Àü´Ü½ÃÇè¿¡¼­ ¾ò´Â Á¡Âø·ÂÀº ƯÈ÷, ºÒ±³¶õÈ­°­ Åä¿¡¼­ °ú´ëÆò°¡ µÇ´Â °æÇâÀÌ ÀÖÀ¸¸ç »ïÃà¾ÐÃà½ÃÇè¿¡¼­ÀÇ ÀÀ·Âºñ(q/p')¿Í üÀûº¯Çü·üÁõ¶Óºñ (dv/de)ÀÇ °ü°è´Â ÇÔ¼öºñ, dzȭµµ, ±¸¼Ó¾Ð·Â, ±³¶õ¿¡ °ü°è¾øÀÌ ÇϳªÀÇ ½Ä($dv/dvarepsilon,=alpha(M-eta))$À¸·Î ±Ù»çÈ­½Ãų ¼ö ÀÖ¾ú´Ù.
Since decomposed granite soil shows various characteristics of shear behavior dependent on initial conditions such as weathering degree and grain breakage, it is nacessary to invert ligate stress -strain relationship and changes of shear characteristics for different initial conditions. Associated with abovefnentioned view, direct shear tests, and triaxial compression tutsts(Ef, CD) were carried out in this study for undisturbed and disturbed compacted weathered granite samples obtained from 4 construction work sites with the various weathering degree and components of parent rocks. The deformation behavior of undisturbed samples under small confining stress shows hardening to softening, which is similar to that of over nsolidated clay whereas disturbed weathered granite soils do hardeningfonstant regardless of weathering degree, which is also similar to sedimentary clay. Conventional direct shear-tests for undisturbed samples show a tendency to overestimate cohesion. It is possidle to approximate stress ratio(q/p') and volumetric increment ratio(dv/ds) in the triaxital compression tests by an equation, ($dv/dvarepsilon,=alpha(M-eta))$ irrespective of moisture content, weathering degree and disturbance.
 
Ű¿öµå
Undisturbed decomposed granite soil;Shear strength;Loss of ignition;Design value;Stress-strain curve;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.13, no.4, 1997³â, pp.177-198
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920447580)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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