Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2005.03a
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- Pages.1546-1553
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- 2005
A Study on Reinforcement Effectiveness for Railway Soft Roadbed by Using Geotextiles
토목섬유를 활용한 철도 연약노반에서의 보강효과
- Lee, Jin-Wook (Track & Civil Engineering Research Dept., KRRI.) ;
- Choi, Chan-Yong (Track & Civil Engineering Research Dept., KRRI.)
- Published : 2005.03.25
Abstract
In this study, geotextiles was applied on the selected track-bed, which is relatively economical and efficient way to prevent the problem of mud-pumping and settlement. Field testing sections from Mock-haeng to Dong-ryang in the Chung-buk lines in Korea were selected to investigate the state of track and roadbed. And three places were chosen among 1,700 spots where mud-pumping was frequently occurred and maintenance required. At the curved section with radius of 500m between Mock-haeng and Dong-ryang, we divided this testing site into 5 section and 4 different types of geotextile were installed and left the last section with no reinforcement. Total length of the test site was 200m and individual length of each site was 40 m. In order to understand the state and the strength of prepared roadbed, stiffness and physical properties of the roadbed soil were evaluated and analyzed. Also, after the installation, mud-pumping, settlement of elastic or plastic sleeper, failure of track, wheel-loads, lateral force and earth pressures were investigated.