Study of Railway Ballast Compactness under Tamping Operation
Abstract:
Railway ballast tamping operation is an important work in
the railway line maintenance and renewal operation, which is employed to restore
the initial geometry of railway track distorted by train traffics. The main
goal of tamping operation is to compact the stone ballasts under the sleepers
supporting the railway squeezing and vibrations. The ballast compactness is
the most direct index for evaluating the quality of tamping operation. This
paper presents an experimental method used to measure the ballast compactness
under the sleeper before and after tamping operation based on water-filling
method and creates a discrete element analysis model of railway ballast which
analyzes the change of ballast compactness under tamping operation based on
discrete element method. The simulation results are very similar with experimental
results, which verify that the discrete element method is an effective method
to evaluate the change of railway ballast compactness under tamping operation.
How to cite this article
Taoyong Zhou, Bin Hu and Junfeng Sun, 2013. Study of Railway Ballast Compactness under Tamping Operation. Journal of Applied Sciences, 13: 2072-2076.
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