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Çѱ¹Áö¹Ý°øÇÐȸ / v.10, no.2, 1994³â, pp.85-96
°øÁøÁÖ ½ÃÇè±â¸¦ ÀÌ¿ëÇÑ ±¹³» ³ë»óÅäÀÇ µ¿Àû ¹°¼ºÄ¡
( Dynamic Properties of Korean Subgrade Soils Using Resonant Column Test )
±èµ¿¼ö;Á¤Ãæ±â;È«¼º¿µ; ¹Ì±¹ Polytechnic´ëÇб³;¼­¿ï´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú, ¿ì´ë±â¼ú´Ü;;
 
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°øÁøÁÖ ½ÇÇè±â´Â Àü´Üź¼º°è¼ö, ¿µ°è¼ö ¹× °¨¼èºñ·Î Ç¥ÇöµÇ´Â Áö¹ÝÀÇ µ¿Àû¹°¼ºÄ¡¸¦ ¿¬±¸Çϱâ À§ÇÑ Áß¿äÇÑ ½Ç³» ½ÇÇè¹ýÀ¸·Î ³Î¸® »ç¿ëµÇ¾î ¿Ô´Ù. º» ¿¬±¸¿¡¼­´Â Stokoe½Ä °øÁøÁÖ ½ÇÇè±â¸¦ ÀÌ¿ëÇÏ¿© Àü´Ü º¯Çü·ü 10-4%-10-1% ¹üÀ§¿¡¼­ ´ëÇ¥ÀûÀÎ ±¹³» ³ë»óÅäÀÇ µ¿Àû ¹°¼ºÄ¡¸¦ ¿¬±¸ÇÏ¿´´Ù. Àü´Üź¼º°è¼ö¿Í °¨¼èºñ´Â ÇѰ躯Çü·ü Ix10-3%ºÎ±Ù¿¡¼­ ºÎÅÍ º¯Çü·üÀÇ ¿µÇâÀ» ¹Þ±â ½ÃÀÛ ÇÏ¿´´Ù. ÇÑ°è º¯Çü·ü ÀÌÇÏ¿¡¼­ ÃÖ´ë Àü´Üź¼º°è¼ö(Gmin)´Â ±¸¼Ó¾Ð (Qc)¿¡ µû¶ó (Qc)0.61¿¡ ºñ·ÊÇÏ¿© Áõ°¡ÇÏ¿´°í ÃÖ¼Ò°¨¼è ºñ(Dmin)´Â 1%-5.7% ¹üÀ§¿¡ ºÐÆ÷ÇÏ¿´´Ù. ÇÑ°è º¯Çü·ü À̻󿡼­ Á¤±ÔÈ­ ź¼º°è¼ö °¨¼Ò°î¼±Àº Ramberg-Osgood½ÄÀ¸·Î Àß ³ªÅ¸³¾ ¼ö ÀÖÀ¸¸ç Seed¿Í Idriss°¡ »çÁúÅä ¸¦ ÀÌ¿ëÇÏ¿© ¾òÀº °¨¼Ò°î¼±°ú °ÅÀÇ ÀÏÄ¡ÇÏ¿´´Ù.
Resonant column test huts been widely used as a primary laboratory testing technique in investigating dynamic soil properties expressed in therms of shear and Young's moduli and material damping. In thin Paper, dynamic Properties of typical Korean subgrade boils are investigated at shearing strains between 10-4% and 10-1% using Stokoe-type resonant column teat. The elastic threshold strains(yte) above which shear modulus and damping ratio are affected by strain amplitude, are defined at strain amplitude of about 10-3%. Below yte", small-strain shear modulus (Gmn) increases with confining pressure (Qc) as proportional to (Qe)0.61, and small-strain damping ratio(Dmin) ranges between 1% and 5.7%. Above yte, normalized shear modulus reduction curve(G/Gma. versus log strain) can be quite well expressed with Ramberg Osgood stress -strain equation and match well the curve suggested for sand by Seed and Idriss.riss.
 
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.10, no.2, 1994³â, pp.85-96
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411920445435)
¾ð¾î : Çѱ¹¾î
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