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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.6, 2008³â, pp.57-67
ÆòÆÇÀçÇϽÃÇèÀ» ÀÌ¿ëÇÑ Áö¹Ý¹Ý·Â°è¼ö¿Í º¯Çü·ü°è¼öÀÇ »ó°ü°ü°è Æò°¡
( Evaluation of Correlation between Subgrade Reaction Modulus and Strain Modulus Using Plate Loading Test )
±è´ë»ó;¹Ú¼º¿ë;±è¼öÀÏ; Çѱ¹Ã¶µµ±â¼ú¿¬±¸¿ø, öµµ½Ã½ºÅÛ¿¬±¸¼¾ÅÍ;¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкΠÅä¸ñ°øÇаú;¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкÎ;
 
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öµµ³ë¹ÝÀÇ ´ÙÁü ÈÄ Ç°ÁúÀ» °ü¸®Çϱâ À§ÇÏ¿© ºñ¹Ýº¹ ÆòÆÇÀçÇϽÃÇè(nonrepetitive plate loading test)À¸·ÎºÎÅÍ ¾ò¾îÁö´Â Áö¹Ý¹Ý·Â°è¼ö(subgrade reaction modulus, $k_{30}$)¿Í ¹Ýº¹ÆòÆÇÀçÇϽÃÇè(repetitive plate loading test)À¸·ÎºÎÅÍ È¹µæÇÏ´Â º¯Çü·ü°è¼ö(strain modulus, $E_v$)ÀÇ µÎ °è¼ö¸¦ È¥¿ëÇϰí ÀÖ´Ù. ÆòÆÇÀ» ÀÌ¿ëÇÑ ÀçÇϽÃÇèÀ» ¼öÇàÇÑ´Ù´Â Á¡¿¡¼­ µÎ ½ÃÇè¹ýÀº µ¿ÀÏÇϳª, ¼³°èÁ¤¼ö ȹµæ¹æ¹ý, ¹Ýº¹ÀçÇÏ È½¼ö, °¢ ÇÏÁß ´Ü°è¿¡¼­ÀÇ ½ÃÇè Á¾·á¹æ¹ý µî ½ÃÇè¹æ¹ý¿¡´Â Å« Â÷À̰¡ ÀÖ´Ù. º» ³í¹®¿¡¼­´Â µÎ ½ÃÇèÀÇ Â÷À̸¦ ºñ±³ ºÐ¼®ÇÏ°í µÎ °è¼ö¿¡ ´ëÇÑ »ó°ü¼ºÀ» Æò°¡ÇÏ¿´´Ù. À̸¦ À§ÇÏ¿© °æºÎ°í¼Óöµµ 2´Ü°è °ø»ç±¸°£ÀÇ ¿øÁö¹Ý 6°³¼Ò¿Í ½×±âÁö¹Ý 5°³¼Ò¿¡ ´ëÇÑ ÃÑ 22ȸÀÇ ÇöÀå½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ÇöÀå ½ÃÇè ½ÃÀÇ ÀÀ·ÂÁ¶°Ç, º¯Çü·ü Á¶°Ç ¹× Æ÷¾Æ¼Ûºñ Á¶°ÇÀ» °í·ÁÇÑ º¸Á¤À» ¼öÇàÇÏ¿© µÎ °è¼öÀÇ »ó°ü¼ºÀ» ³ô¿´À¸¸ç, ÇöÀå¿¡¼­ »ç¿ëÀÌ °¡´ÉÇϵµ·Ï Áö¹ÝÁ¾·ù¿¡ µû¸¥ »ó°ü°è¼ö¸¦ Á¦½ÃÇÏ¿´´Ù.
Two test methods, nonrepetitive plate loading test (NPLT) and repetitive plate loading test (RPLT) are being used to control the quality of compaction through the evaluation of the stiffness of subgrade soils in the Korea railway industry. Subgrade reaction modulus ($k_{30}$) from the NPLT and strain modulus ($E_v$) from the RPLT are the index values to check them. The methods have similar aspects, but they differ in the modulus evaluation method, the numbers of loading stage, termination procedures, etc. This paper analyses the differences of the two test methods and evaluates the relationship between subgrade reaction modulus and strain modulus. In order to develop the relationship, total 22 tests were performed including the NPLT and the RPLT at the 6 original grounds, and 5 upper or lower subgrades in Kyungbu High Speed Railway II stage construction sites. According to the soil conditions, the relationship between subgrade reaction modulus and strain modulus was proposed with corrections by considering strain states, mean confining pressures, and Poisson's ratio.
 
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Nonrepetitive plate loading test;Railway;Repetitive plate loading test;Strain modulus ($E_v$;);Subgrade reaction modulus ($k_{30}$;);
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.6, 2008³â, pp.57-67
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200827464608896)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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