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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.5, 2005³â, pp.163-170
GPR/PBS/LFWD¸¦ ÀÌ¿ëÇÑ ±ËµµÇϺΠ»óÅÂÆò°¡
( Evaluation on the Condition of Track Substructure Using GPR/PBS/LEWD )
±è´ë»ó;Ȳ¼±±Ù;½Å¹ÎÈ£;¹Úżø; Çѱ¹Ã¶µµ±â¼ú¿¬±¸¿ø ±ËµµÅä¸ñ¿¬±¸º»ºÎ;Çѱ¹Ã¶µµ±â¼ú¿¬±¸¿ø ±ËµµÅä¸ñ¿¬±¸º»ºÎ;Çѱ¹Ã¶µµ±â¼ú¿¬±¸¿ø ±ËµµÅä¸ñ¿¬±¸º»ºÎ;¼­¿ï»ê¾÷´ëÇб³;
 
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±Ëµµ»óºÎ(·¹ÀÏ, ü°á±¸, ħ¸ñ)¸¦ ¿ÏÀüÇÏ°Ô Àß ÁöÁöÇϱâ À§Çؼ­´Â ±ËµµÇϺÎ(µµ»ó, ³ë¹Ý)°¡ ÃæºÐÇÑ °­µµ¸¦ °¡Áö°í ±ÕÁúÇÑ °­¼ºÀ» °¡Á®¾ß ÇÑ´Ù. ±ËµµÀÇ ¼öÁ÷ÁöÁö°­¼ºÀº ±ËµµÇϺÎÀÇ »óÅÂ(¼¼¸³ºÐ ÇÔ·®, ÇÔ¼öºñ)¿¡ Å©°Ô ¿µÇâÀ» ¹Þ´Â´Ù. µû¶ó¼­ ±ËµµÀÇ ¼öÁ÷ÁöÁö°­¼ºÀ» Æò°¡Çϱâ À§ÇÏ¿© ±ËµµÇϺÎÀÇ »óŸ¦ Æò°¡ÇÏ´Â °ÍÀº ¸Å¿ì Áß¿äÇÏ´Ù. º» ³í¹®¿¡¼­´Â ±ËµµÇϺÎÀÇ »óŸ¦ Áø´ÜÇÒ ¼ö ÀÖ´Â GPR/PBS/LFWD·Î ±¸¼ºµÈ ±Ëµµ±âÃÊ»óÅÂÆò°¡¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. Á¦¾ÈµÈ ±Ëµµ±âÃÊ »óÅÂÆò°¡¹ýÀÇ Àû¿ë¼ºÀ» Æò°¡Çϱâ À§ÇÏ¿© ½Ç³» ½ÇÇè ¹× ÇöÀå½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù.
Track substructure (ballast, subgrade) should have sufficient strength and uniform stiffness to fully support track superstructure (rail, fastener, sleeper). Vertical support stiffness of track is strongly influenced by the condition of ballast and subgrade layers. Therefore, the evaluation of the condition of track substructure is very important to evaluate the vertical support stiffness of track. This paper proposes the trackbed evaluation system, which is composed of Ground Penetrating Radar (GPR), Portable Ballast Sample. (PBS), and Light Falling Weight Deflectomete. (LFWD), to diagnose track substructure. The laboratory and field tests are performed to evaluate the applicability of the proposed trackbed evaluation system.
 
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Ground penetrating radar (GPR);Light falling weight deflectometer(LFWD);Portable ballast sampler(PBS);Trackbed evaluation system;Vertical support stiffness;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.5, 2005³â, pp.163-170
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200504704325458)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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