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Field Model Tests on Frost Penetration Depths and Frost Heave Amounts in Ballast track and Concrete track

현장모형실험을 통한 자갈궤도와 콘크리트궤도의 동결심도 및 동상량 측정

  • Kim, Young-Chin (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
  • Received : 2015.09.08
  • Accepted : 2016.08.02
  • Published : 2016.08.31

Abstract

Experimental ballast track and concrete track were installed on the railway site and the frost penetration depth and the frost heave amount in the winter were measured. As a result, when the freezing index was the same, the frost penetration depth of concrete track was deeper than that of ballast track. Furthermore, when an XPS and polyethylene aggregate layer was installed below the ballast track, the frost penetration depth of the ballast track decreased significantly; in the case of the concrete track, the frost penetration depth decreased when the thickness of the subbase increased. Meanwhile, the frost heave amount also decreased when an XPS and polyethylene aggregate layer was installed below the ballast track ; in the case of the concrete track, the frost heave amount decreased when the thickness of the subbase increased.

Acknowledgement

Grant : 철도구조물의 동해방지공법 및 설계, 시공, 유지관리지침 개발

Supported by : 국토교통부

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