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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.4, 2008³â, pp.37-46
ÀÀ·ÂÀÇÁ¸¼º ¹× ź¼º°è¼ö °¨¼èƯ¼ºÀ» °í·ÁÇÑ ³ë»óÅäÀÇ Á¤±ÔÈ­ ÇØ¼®¸ðµ¨
( Normalized Subgrade Analytical Model Considering Stress-Dependency and Modulus Degradation )
±èÁöȯ;°­º´ÁØ;ÀÌÁØÈ¯;±Ç±âö; (ÁÖ)¼¼±¤Á¾ÇÕ±â¼ú´Ü ¼³°èº»ºÎ ÅäÁúÆÀ;¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;µ¿ÀÇ´ëÇб³ Åä¸ñ°øÇаú;
 
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Æ÷ÀåÀç·áÀÇ ¿ªÇÐÀû Ư¼ºÀ» ´ëÇ¥Çϴ ȸº¹Åº¼º°è¼ö´Â '86 AASHTO ¼³°è¹ý¿¡¼­ ³ë»óÀÇ ±âº»ÀÔ·Â ¹°¼ºÄ¡·Î Àû¿ëÇÑ ÀÌÈÄ Æ÷Àå ¼³°è, ÇØ¼®»Ó ¾Æ´Ï¶ó Æ÷Àå Æò°¡, À¯Áö°ü¸® µî¿¡µµ º¸ÆíÀû °³³äÀ¸·Î Á¤ÂøµÇ¾î °¡°í ÀÖ´Ù. ±¹³» ³ë»óÅäÀÇ È¸º¹Åº¼º°è¼ö´Â ÇÔ¼öºñ¿Í °ÇÁ¶´ÜÀ§Áß·®À¸·Î ´ëÇ¥µÇ´Â Àç·áÀû ¿äÀΰú ÃàÂ÷ÀÀ·Â ¹× ±¸¼ÓÀÀ·Â¿¡ ´ë´ÜÈ÷ Å« ¿µÇâÀ» ¹Þ°í ÀÖ°í, ÇÏÁßÁ֯ļöÀÇ ¿µÇâÀº ÀÖÀ¸³ª ±× Á¤µµ°¡ Å©Áö ¾Ê°í, ÇÏÁ߹ݺ¹È½¼öÀÇ ¿µÇâÀº ¹«½Ã °¡´ÉÇÑ °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù(°Ç¼³±³ÅëºÎ 2003). µû¶ó¼­ ±¹³» Æ÷ÀåÀç·á¿¡ µû¸¥ ȸº¹Åº¼º°è¼öÀÇ ÀûÀýÇÑ Æò°¡´Â ±¹³» Æ÷À屸Á¶Ã¼ÀÇ ¿ªÇаŵ¿ ¹× °ø¿ë¼º Æò°¡¸¦ À§ÇØ ¸Å¿ì Áß¿äÇÑ »çÇ×ÀÌ´Ù. ÀÌ¿Í °°Àº ¹è°æÀ¸·Î º» ¿¬±¸¿¡¼­´Â ±¹³» ³ë»óÅä Àç·áÀÇ ¿ªÇÐÀû Ư¼º º¯È­¸¦ Æ÷Àå ´Ü¸é¼³°è¿¡ ÇÕ¸®ÀûÀ¸·Î ¹Ý¿µÇϱâ À§ÇÑ ³ë»óÅä ÇØ¼®¸ðµ¨À» Á¦¾ÈÇÏ¿´°í, Á¦¾ÈµÈ ¸ðµ¨À» Àû¿ëÇÑ À¯ÇÑ¿ä¼ÒÇØ¼® °á°ú¿Í ½ÃÇèµµ·Î ½ÇÃøÄ¡¿ÍÀÇ ºñ±³ °ËÁõÀ» ÅëÇØ Á¦¾ÈµÈ ¸ðµ¨ÀÇ ½Å·Ú¼ºÀ» °ËÁõÇÏ¿´´Ù.
Application of resilient modulus, representing mechanical behavior of pavement materials, has become general concept for pavement design, analysis and maintenance after '86 AASHTO selected it as a basic input property of subgrade. It is known that resilient modulus of domestic subgrade soil is affected greatly by material factors, such as water content and dry weight unit, and stress components, such as deviatoric stress and confining stress, while effects of loading frequency and loading repeat were regarded negligible. If design based on resilient modulus is to be successfully implemented, design input variables of relevant models should be able to reflect local conditions. In this study, generalized mechanical model for subgrade is proposed. Model parameters are estimated from test results. Verification of the model was performed through finite element analysis using the proposed model, which showed good agreement with measured results of pavement deflections.
 
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Analytical model;Confining stress;Deviatoric stress;Pavement substructure;Sub grade;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.4, 2008³â, pp.37-46
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200821036726097)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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