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http://dx.doi.org/10.7782/JKSR.2013.16.4.278

Wave Propagation on a High-speed Railway Embankment Using a Pile-slab Structure  

Lee, Il Wha (Advanced Infrastructure Research Team, High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Lee, Sung Jin (Advanced Infrastructure Research Team, High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Lee, Su Hyung (Surface Traffic System Research Team, Metropolitan Transportation Research Center, Korea Railroad Research Institute)
Lee, Kang Myung (Advanced Infrastructure Research Team, High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Railway / v.16, no.4, 2013 , pp. 278-285 More about this Journal
Abstract
The suppression of residual settlement is required on earthwork sections as concrete track is introduced. Use of pile-slab structure is one of the settlement restraining methods applied on soft ground. The slab distributes the upper embankment load and piles transfer the load from the slab to the stiff ground. While this method is very effective in terms of load transfer, it has not yet been established for dealing with the vibration transfer effects and interaction characteristics between a structure and the ground. It is possible that vibration caused by a moving train load is propagated in the upper embankment, because the slab acts as a reflection layer and waves are multi-reflected. In this present paper, wave propagation generated by a moving train load is evaluated in the time and frequency domains to consider a roadbed structure using an artificial impact load and field measured train load. The results confirmed the wave reflection effect on the pile-slab structure, if the embankment height is sufficient, vibration propagation can be stably restrained, whereas if the height is not sufficient, the vibration amplitude is increased.
Keywords
Pile-slab structure; Embankment; Wave propagation; Concrete track; Reflection;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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