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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.2, 2004³â, pp.5-13
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¸ð»ç ¿Â÷ÇÏÁß ÀçÇÏ¿¡ µû¸¥ ¼â¼®°È³ë¹ÝÀÇ Ä§ÇÏÆ¯¼º
( Settlement Characteristics of the Reinforced Railroad Roadbed with Crushed Stones Under a Simulated Train Loading ) |
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| ±âÁ¸ÀÇ ÈëÀ» »ç¿ëÇÏ¿© °Ç¼³µÈ öµµ ³ë¹ÝÀº ¹Ýº¹ÀûÀÎ ±³ÅëÇÏÁßÀÇ Áõ°¡, ¿Â÷¼ÓµµÀÇ Çâ»ó, ³ë¹Ý»óÀ¸·ÎÀÇ ÁöÇϼöÀÇ À¯ÀÔ, ³ë¹ÝÀÇ ¹è¼ö´É·Â ÀúÇÏ µîÀÇ ÀÌÀ¯·Î ÀÎÇØ ½Ã°£°æ°ú¿¡ µû¶ó ½±°Ô ±× ±â´ÉÀ» »ó½ÇÇÒ ¼ö ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â ½Ç´ëÇü½ÃÇè°ú ¼öÄ¡ÇØ¼®À» ¼öÇàÇÔÀ¸·Î¾¾ öµµ³ë¹ÝÀ¸·Î¼ÀÇ ¼â¼®°È³ë¹ÝÀÇ ¼º´ÉÀ» Æò°¡ÇÏ¿´´Ù. ¼â¼®°È³ë¹ÝÀÇ Åº$.$¼Ò¼º ¿¬Á÷º¯À§´Â ¸ð»ç¿Â÷ÇÏÁßÀÇ ÀçÇÏȽ¼ö¿¡ °ü°è¾øÀÌ ÀÏ¹Ý Èë³ë¹Ý¿¡ ºñÇØ ÀÛÀº ÀÀ´äƯ¼ºÀ» º¸¿´À¸¸ç, µ¿ÀÏÇÑ ³ë¹Ý ºÎ¼³µÎ²²¿¡¼´Â ³ë¹Ý¹Ý·Â°è¼öÀÇ Áõ°¡¿¡ µû¶ó °¨¼ÒÇϸç, µ¿ÀÏÇÑ °¼ºÀÎ °æ¿ì ³ë¹Ý ºÎ¼³µÎ²² Áõ°¡¿¡ µû¶ó °¨¼ÒÇÏ´Â °æÇâÀ» º¸¿´´Ù. ÇÏÁö¸¸, ¼â¼®°È³ë¹ÝÀÇ ºÎ¼³µÎ²²¿¡ ºñÇØ ³ë¹ÝÀÇ °¼ºÀÌ ±Ëµµ¿¡ ¹ß»ýÇÏ´Â Àüü ¼Ò¼º ¿¬Á÷º¯À§¿¡ ´õ¿í Å« ¿µÇâÀ» ¹ÌÄ¡´Â °ÍÀ¸·Î Æò°¡µÇ¾ú´Ù. |
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| Conventional railroad roadbeds constructed with soils can easily deteriorate with time due to the increase of repeated traffic loading, increase of train speed, built-up of ground water on the roadbed and decrease of permeability in the roadbed layer, etc. In this study, performance of reinforced railroad roadbeds with the crushed stones was investigated through the real scale roadbed tests and numerical analysis. It was found that the reinforced roadbed with crushed stone had less elastic and plastic vertical displacement(settlement) than general soil roadbed regardless of the number of loading cycles. It was also found through the actual testing that for the roadbed with the same thickness, the displacement of reinforced roadbed decreases with the increase of subgrade reaction modulus. The settlement of reinforced roadbed with the same subgrade reaction modulus also decreases with the increase of thickness of the reinforced roadbed. However, the subgrade reaction modulus is a more important factor to the total plastic displacement of the track than the thickness of the crushed stone roadbed. |
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| Ű¿öµå |
| Crushed stones;Reinforced roadbed;Settlement;Subgrade reaction modulus;Vertical displacement; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.2, 2004³â, pp.5-13
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922321470)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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