• Title/Summary/Keyword: Earth/Tunnel Transition Zone

Search Result 4, Processing Time 0.02 seconds

Analysis on the Reinforcement Effect for Large Type Sleeper on Transition zone between Earthwork and Tunnel (터널/토공 접속부에 대한 대형침목 보강효과 분석)

  • Lee, Jin-Wook;Choi, Chan-Yong;Lee, Il-Wha
    • Proceedings of the Korean Geotechical Society Conference
    • /
    • 2006.03a
    • /
    • pp.1279-1286
    • /
    • 2006
  • It is very important to pay careful attention to construction of earthwork/tunnel transition zone for railway. The transition zone of the railway is the section which roadbed stiffness is suddenly varied. Differences in stiffness have dynamic effects and these increase the forces in the track and the extent of deformation. In this study, performance of transition zone was investigated through the field tests. The wheel loads and sleeper settlement were measured after installing field testing sections.

  • PDF

Experimental study on the Variation of Stiffness Transition Zone between Earthwork and Tunnel (열차운행시 터널-토공접합부에서의 강성천이구간에 대한 실험적 연구)

  • Lee Jin-Wook;Choi Chan-Yong;Lee Il-Hwa
    • Proceedings of the KSR Conference
    • /
    • 2005.05a
    • /
    • pp.726-733
    • /
    • 2005
  • It is very important to pay careful attention to construction of earthwork/tunnel transition zone for railway. The transition zone of the railway is the section which roadbed stiffness is suddenly varied. Differences in stiffness have dynamic effects and these increase the forces in the track and the extent of deformation. In this study, performance of transition zone was investigated through the field tests. The wheel loads and sleeper settlement were measured after installing field testing sections.

  • PDF

A Correlation Analysis on Earth Pressure and Subgrade Stiffness in Bridge Abutment Transition Zone (철도 교량접속부의 토압과 노반강도와의 상관관계)

  • Kim, Jin-Hwan;Cho, Kook-Hwan
    • Journal of the Korean Society for Railway
    • /
    • v.19 no.5
    • /
    • pp.647-655
    • /
    • 2016
  • The construction of high speed railways and improvement projects of for conventional railways require straight railway lines of railway, which leads to an increase of bridge and tunnel construction. Transition zones in railways means that the track support stiffness is variedvaries in over short ranges. Sspecial attention is required in theose transition zones since because instability of train running in train and irregularities of track irregularities are can frequently occurred. Typical transition zones are between bridges and earthworks and between tunnels and earthworks. On In a transition zone, a bridge abutment transition zone has many problems in with various causes. In this paper, fundamental problems of bridge abutment transition zones is are analyzed to enhance the understanding about of bridge abutment transition zones. Suggestions for improving problems in the transition zones are proposed.