- Volume 20 Issue 2
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Investigation of Settlement of Concrete Track on High-Speed Railway Due to Groundwater Variation
지하수위 변동에 따른 고속철도 콘크리트궤도의 침하 영향 검토
- Lee, Hyunjung (Seoul Metropolitan Regional Office, Korea Rail Network Authority) ;
- Choi, Yeong-Tae (Korea Railroad Research Institute) ;
- Lee, Ilwha (Korea Railroad Research Institute) ;
- Lee, Minsoo (KR Research Institute, Korea Rail Network Authority) ;
- Lee, TaeGyu (Woosong University)
- Received : 2016.11.15
- Accepted : 2017.03.31
- Published : 2017.04.30
Groundwater drawdown was pointed out as one of the causes of induced settlement on high speed railways, especially concrete track. In this study, the effect of groundwater variation on settlement was evaluated through a comparison of field measurements with numerical analysis results. A trial and error method, i.e., repeated numerical analyses by changing material properties, was used to calibrate the model. The model was applied to investigate the effect of groundwater drawdown, thickness of soft layer, and embankment height on residual settlement after concrete track completion. A soft layer thicker than 4m would result in more than 30mm of settlement; a detailed analysis of groundwater behavior thus should be conducted from the design stage to construction.
Supported by : 국토교통부
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