경부고속철도 콘크리트궤도에서의 속도대역별 궤도 및 노반 동적응답특성 연구

Study on the dynamic response characteristics of the concrete track and roadbed during the speed up tests of Gyungbu high_speed rail

  • 김대상 (한국철도기술연구원, 고속철도연구본부) ;
  • 신기대 (한국철도기술연구원, 고속철도연구본부) ;
  • 나성훈 (한국철도기술연구원, 감사실) ;
  • 김기환 (삼표E&C, 철도연구소 연구개발팀)
  • 발행 : 2011.10.20

초록

The concrete track was applied for Gyungbu 2nd phase high_speed railroad line as a basic track structure. Two track structures, ballasted track and non_ballasted concrete track, have a different train load transfer mechanisms. However, it's rare to see about research results related with it. So, to understand dynamic response characteristics of the concrete track and roadbed, we measured accelerations of carbody and bogie, vertical and lateral load, stress and displacement of rail, and earth pressures of subgrade at ${\bigcirc}{\bigcirc}{\bigcirc}$k930 station of Gyungbu high_speed line during speed up tests before opening it. Based on these measured results, we could evaluate the level of dynamic responses of the track quantitatively.

키워드