Browse > Article

Settlement Characteristics of the Reinforced Railroad Roadbed with Crushed Stones Under a Simulated Train Loading  

Hwang, Seon-Keun (Korea Railroad Research Institute)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.2, 2004 , pp. 5-13 More about this Journal
Abstract
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.
Keywords
Crushed stones; Reinforced roadbed; Settlement; Subgrade reaction modulus; Vertical displacement;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Bearing Capacity of Actual Existing Roadbed /
[ Sekine,E.;Muramoto,K. ] / RTRI Report
2 Characteristics of Behavior of the Crushed Stone Reinforced Roadlbed Under Cyclic Loading /
[ Hwang,S.K.;Lee,S.H.;Choi,C.Y.;Lee,I.H. ] / Proceedings of the KGS Spring 2001 National Conference
3 A Study on the Development of Economical Reinforced Roadbed /
[ Sunaga,M.;Sekine,E. ] / RTRI Report
4 Model Testing of Two-Layer Railway Track Ballast /
[ William,F.A. ] / Journal of Geotochnical Engineering and Geoenvironmental Engineering
5 A Study on the Compaction Control of Embankments to Receive Train Loads /
[ Muramoto,K.;Sekine,E. ] / RTRI Report
6 /
[ E.T.Seling;J.M.Waters ] / Track Geotechnology and Substructure Management