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- W2164102912 abstract "The purpose of this paper was to evaluate the effectiveness of geogrid for conventional ballasted track and asphalt concrete underlayment track using PLAXIS finite element program. Geogrid element was modeled at various locations that include subballast/subgrade, subballast/ballast interfaces, middle of the ballast, and one-third depth of the ballast. The results revealed that the effectiveness of geogrid reinforcement appeared to be larger for ballasted track structure compared to asphalt concrete underlayment track. Particularly, in case of installing geogrid at one-third depth of ballast layer in a conventional ballasted track, the most effectiveness of geogrid reinforcement was achieved. The influence of geogrid axial stiffness on track substructure response was not clear to conclude. Further validations using a discrete element method along with experimental investigation are considered as a future study. The effect of asphalt concrete layer modulus was evaluated. The results exhibited that higher layer modulus seems to be effective in controlling displacement and strain of track substructure. However it also yields slightly higher stresses within track substructure. It infers that further validations are required to come up with optimum asphalt concrete mixture design to meet economical and functional criteria." @default.
- W2164102912 created "2016-06-24" @default.
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- W2164102912 date "2013-06-30" @default.
- W2164102912 modified "2023-09-23" @default.
- W2164102912 title "Parametric Study on Geogrid-Reinforced Track Substructure" @default.
- W2164102912 cites W1979629801 @default.
- W2164102912 doi "https://doi.org/10.7782/ijr.2013.6.2.059" @default.
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