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http://dx.doi.org/10.7782/JKSR.2016.19.6.765

Stability of Railway Bridge Abutment with Earth Pressure and Internal Friction Angle of Backfill  

Choi, Chan Yong (High Speed Railway Infrastructure System Research Center, Korea Railraod Research Institute)
Kim, Hun Ki (High Speed Railway Infrastructure System Research Center, Korea Railraod Research Institute)
Yang, Sang Beom (High Speed Railway Infrastructure System Research Center, Korea Railraod Research Institute)
Kim, Byung Il (Research Institute, Expert Group for Earth & Environment)
Publication Information
Journal of the Korean Society for Railway / v.19, no.6, 2016 , pp. 765-776 More about this Journal
Abstract
In this study, a standard section of a railway bridge abutment wall was designed to satisfy the external stability condition in accordance with the design criteria; this design was used to compare and analyze the active earth pressure and to calculate various types of earth pressure acting on the virtual back (wall, plane) according to the frictional angle of the backfill materials. Also, the external stability, member force and construction cost were analyzed according to the frictional angle of the backfill materials using various theories of earth pressure such as Rankine, Coulomb, Trial Wedge, and Improved Trial Wedge. As for the results, it was found that lateral earth pressure at the virtual back plane was higher than at the virtual back wall, and that these values decreased with the increase of the frictional angle of the backfill materials. The increasing of the frictional angle of the backfill materials decreased the active earth pressure (according to Rankine, Coulomb, Trial Wedge, and Improved Trial Wedge results), and the member force as well as the construction cost were reduced.
Keywords
Railway bridge abutment; Earth pressure; Virtual back; Improved trial wedge; Frictional angle;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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