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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.2, 2003³â, pp.189-197
¼¶À¯È¥ÇÕÅäÀÇ ºñ¼±Çü µ¿Àû¹°¼ºÄ¡
( Nonlinear Dynamic Properties of Fiber Reinforced Soils )
¹Úö¼ö;Ȳ¼±±Ù;¸ñ¿µÁø; °æÈñ´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹Ã¶µµ±â¼ú¿¬±¸¿ø ±Ëµµ Åä¸ñ¿¬±¸º»ºÎ;°æÈñ´ëÇб³ Åä¸ñ°øÇаú;
 
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º» ³í¹®Àº °øÁøÁÖ½ÃÇè°ú »ïÃà¾ÐÃà½ÃÇèÀ» ÀÌ¿ëÇÏ¿© ¼Òº¯Çü·ü(0.0001%~l%) ¹üÀ§¿¡¼­ ¼¶À¯È¥ÇÕÅäÀÇ º¯Çü Ư¼ºÀ» ±Ô¸íÇÏ¿´À¸¸ç, ÃÖ´ëÀü´Üź¼º°è¼ö¸¦ Àã´ë·Î º¸°­È¿°ú¸¦ Æò°¡ÇÏ¿´´Ù. ¶ÇÇÑ ´Ü¼¶À¯ÀÇ Á÷°æ¿¡ ´ëÇÑ ±æÀÌÀÇ ºñ(Çü»óºñ), ÈëÀÇ Áß·®¿¡ ´ëÇÑ ¼¶À¯ Áß·®ÀÇ ¼¶À¯È¥ÇÕºñ, ´Ü¼¶À¯ÀÇ Á¾·ù¿¡ µû¸¥ º¸°­È¿°ú¸¦ ºñ±³ °ËÅäÇÏ¿´´Ù. ½Ã·á´Â ÁÖ¹®Áø Ç¥Áػ翡 Æú¸®ÇÁ·ÎÇÊ·» ÀçÁúÀÇ ´Ü¼¶À¯¸¦ ¹«ÀÛÀ§·Î ¹èÇÕÇÏ¿© »ç¿ëÇÏ¿´´Ù. ¼¶À¯È¥ÇÕÅäÀÇ ÃÖ´ëÀü´Üź¼º°è¼ö´Â ºñÈ¥ÇÕÅä¿¡ ºñÇØ ÃÖ´ë 30%±îÁö Áõ°¡ÇÏ¿´°í, ºñ¼±Çü ¿µ¿ª¿¡¼­ÀÇ Àü´Üź¼º°è¼ö °¨¼Ò·®µµ ¾ïÁ¦µÇ¾ú´Ù. Çü»óºñ°¡ Áõ°¡ÇÒ¼ö·Ï ÃÖ´ëÀü´Ü ź¼º°è¼ö´Â Áõ°¡Çϰí, ´Ü»ç¿¡ ºñÇØ ¸Á»çÀÇ º¸°­ È¿°ú°¡ Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¼¶À¯È¥ÇÕºñ´Â 0.3 % ºÎ±Ù¿¡¼­ º¸°­È¿°ú°¡ °¡Àå Ä¿, ÃÖÀûÀÎ °ÍÀ¸·Î È®ÀεǾú´Ù.
In this paper, deformation characteristics of fiber-mixed-soils were studied at small strain range(0.0001%¢¦1%) using resonant column test and triaxial test, and reinforcement effect was evaluated by the measure of maximum shear moduli. The effects of the major parameters such as fiber content, aspect ratio and fiber type on reinforcement were comparatively assessed. The specimens were remolded from Jumunjin Sand randomly mixed with discrete polypropylene staple fibers. Maximum shear moduli of fiber-mixed-soils increased by up to 30% and modulus reduction was also restrained in nonlinear range. Shear moduli increased as the aspect ratio increases. The reinforcement was more effective with fibrillated fiber than with monofilament fiber. The most effective reinforcement was achieved with the specimen of 0.3 % fiber content.
 
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Aspect ratio;Damping ratio;Fiber content;Fiber reinforced soil;Fiber type;Reinforcing effect;Resonant column test;Shear modulus;Small strain triaxial test;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.2, 2003³â, pp.189-197
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921640828)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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