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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.2, 2004³â, pp.5-13
¸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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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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Crushed stones;Reinforced roadbed;Settlement;Subgrade reaction modulus;Vertical displacement;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.2, 2004³â, pp.5-13
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922321470)
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