Micro-Analysis of Railway Ballast Bond Effects

Guo Qing Jing; Lei Shao; Ya Di Zhu; Liang Gao

doi:10.4028/www.scientific.net/AMR.446-449.2492

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 446-449Micro-Analysis of Railway Ballast Bond Effects

Micro-Analysis of Railway Ballast Bond Effects

Abstract:

Ballast glue is a material to adjust ballast stiffness and stabilize ballast from flying due to high speed train winds; its ballast-glue system is less of microscopic mechanism research. In this paper, 3D DEM method is used to produce sleeper-ballast box model, ballast is made of real size irregular clumps, the ballast glue is represented by bonds to simulate the tensile and shear strength, it works at the ballast-ballast particles interaction contacts physically. The sleeper induced monotonic loadings results show the ballast-sleeper microscopic contact force chain distribution is altered due to ballast glue bonding effects, the glue results in tension forces among ballast system. The ballast-box bearing ability is improved with ballast global stiffness increase; ballast-box global stiffness increases with the glue bonding layer depth non-proportional, and is governed by the top 10cm layer.

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Periodical:

Advanced Materials Research (Volumes 446-449)

Pages:

2492-2496

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.446-449.2492

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Online since:

January 2012

Authors:

Guo Qing Jing, Lei Shao, Ya Di Zhu, Liang Gao

Keywords:

Ballast Glue, Ballast-Sleeper, DEM, Stiffness

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