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Çѱ¹µµ·ÎÇÐȸ / v.11, no.4, 2009³â, pp.17-23
±¹³» ³ë»óÅäÀÇ °­µµ ¹× °­¼ºµµ Ư¼º »ó°ü¸ðÇü
( Correlation Model between Strength and stiffness characteristics for Subgrade Soils in Korea )
±Ç±âö;Á¶Á¤³²;ȲÅÃÁø; µ¿ÀÇ´ëÇб³ Åä¸ñ°øÇаú;(ÁÖ)µµ´ãÀÌ¿£¾¾ Áö¹ÝºÎ;ºÎ»ê±¤¿ª½Ã µµ½Ã°³¹ß½Ç;
 
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³ë»óÅäÀÇ º¯ÇüƯ¼ºÀº Æ÷Àå¼³°è¿¡ À־ ¸Å¿ì Áß¿äÇÑ ±âº»ÀûÀÎ ÀԷ¹°¼ºÄ¡´Ù. ³ë»óÅäÀÇ Åº¼º°è¼ö¸¦ ½ÇÇèÀûÀ¸·Î °áÁ¤Çϱâ À§Çؼ­´Â ¸¹Àº ³ë·ÂÀÌ ÇÊ¿äÇÏ´Ù. Æ÷Àå ´Ü¸éÀÌ °£´ÜÇϰųª Á߿䵵°¡ ³·Àº µµ·Î ¼³°èÀÇ °æ¿ì ½ÃÇèÀûÀΠź¼º°è¼ö °áÁ¤ÀÌ °ú´ÙÇÑ ºñ¿ëÀ» ¿ä±¸ÇÏ°Ô µÈ´Ù. º¸´Ù °£ÆíÇÑ ´ëü½ÃÇè ¶Ç´Â ±âÃʹ°¼ºÄ¡·ÎºÎÅÍ Åº¼º°è¼ö¸¦ °áÁ¤ÇÏ´Â ´Ù¾çÇÑ °æÇè¸ðÇüÀÌ Á¦¾ÈµÇ¾î ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â 7Á¾ÀÇ ±¹³» ³ë»óÅä¿¡ ´ëÇÑ ½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ±¹³» ³ë»óÅäÀÇ °æ¿ì °­µµÆ¯¼º°ú º¯ÇüƯ¼ºÀÇ ¹ÐÁ¢ÇÑ »ó°ü¼ºÀ» È®ÀÎ ÇÏ¿´À¸¸ç, °æÇèÀû »ó°ü¸ðÇüÀ» Á¦¾ÈÇÏ¿´´Ù. Á¡Âø·Â°ú ³·Àº ±¸¼ÓÀÀ·Â´Ü°è¿¡¼­ÀÇ Åº¼º°è¼ö´Â ¸Å¿ì Å« »ó°ü°ü°è°¡ ÀÖ¾ú´Ù($r^2=0.93$). Á¦¾ÈµÈ »ó°ü¸ðÇüÀ» Àû¿ëÇÏ¿© °­µµÆ¯¼ºÀ¸·ÎºÎÅÍ ÃßÁ¤µÈ ź¼º°è¼ö¿Í ½ÃÇèÀ» ÅëÇÏ¿© ÃøÁ¤µÈ ź¼º°è¼öÀÇ ºñ±³¿¡¼­ °áÁ¤°è¼ö($r^2$)´Â 0.75·Î ³ªÅ¸³µ´Ù.
Deformational characteristics of subgrade soils are very important input parameters for pavement design. It is necessary to make an amount of effort to estimate experimentally the modulus of subgrade soils. In case of designing simple (or lower level) pavement section, the estimation of the modulus based on experiments must cause an excessive cost. It has proposed various empirical correlation models to estimate the modulus from basic properties of the materials or more simple alternative tests. Seven subgrade soils in Korea were tested in this study. It was founded that the deformational characteristics of subgrade soils in Korea has a close relation to strength characteristics, the empirical correlation model was proposed. There was a close relation between cohesion value and modulus at low confining stress ($r^2=0.93$). By comparing with the measured modulus and the modulus determined by proposed correlation model from strength characteristics, the value of the coefficient of determination ($r^2$) is 0.75.
 
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³ë»óÅä;ź¼º°è¼ö;º¯ÇüƯ¼º;°­µµÆ¯¼º;»ó°ü¸ðÇü;subgrade soils;modulus;deformational characteristics;strength characteristics;correlation model;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.11, no.4, 2009³â, pp.17-23
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200909659864458)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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