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Study on the Reinforcing Subgrade Depths of Highspeed and Conventional Railroads  

Kim Dae-Sang (한국철도기술연구원)
Lee Su-Hyung (한국철도기술연구원)
Choi Chan-Yong (한국철도기술연구원)
Hwang Seon-Keun (한국철도기술연구원)
Publication Information
Journal of the Korean Society for Railway / v.8, no.2, 2005 , pp. 128-136 More about this Journal
Abstract
The reinforcing subgrade, which first introduced Korea for the highspeed subgrade construction, has the many advantages to maintain the quality of ballast track as well as to prevent the softening of subgrade by mud-pumping. It causes the subgrade soil to spout into the ballast on many lines. Therefore, the application of reinforcing subgrade will be expected to increase in the future. This paper introduces the reinforcing subgrade as a maintenance-free technology f3r the railroad operation and the method f3r the determination of reinforcing subgrade depth. The criteria on reinforcing subgrade depths of highspeed and conventional railroad were verified from the calculation results based on an elastic analysis method.
Keywords
Reinforcing subgrade; Highspeed railroad; Conventional railroad; Elastic analysis;
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