한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2006년도 춘계 학술발표회 논문집
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- Pages.1320-1325
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- 2006
지반조건에 따른 고속철도 토공노반의 공진에 관한 연구
Study on the Resonance in Trackbed of High-Speed Railway Considering Ground Condition
- Lee, Il-Wha (Korea Railroad Research Institute) ;
- Hwang, Seon-Keun (Korea Railroad Research Institute) ;
- Choi, Chan-Young (Korea Railroad Research Institute)
- 발행 : 2006.03.24
초록
When the train running on the high-speed track, there is a speed band which track distortion is unusually increased according to the condition of track and roadbed. This speed is called critical velocity and physical parameter values are increased greatly. These phenomenon happened as high-speed train were developed, studied regularly through TGV 100 running test in France. As research result until now, the main reason is soft roadbed's bearing capacity. Wave propagation and track support capacity is varied by the ground characteristics. This paper achieved theoretical examination about resonance band(speed and frequency) that occurred in roadbed on the base rock in point of geotechnical engineering. The examination of resonance divides with ground response analysis, critical band analysis by the shear wave velocity of roadbed and train critical speed through the ground stratum.