Railway ballast tamping operations is employed in order to restore the geometry of railway track distorted by train traffics. The main goal is to compact the stone ballast under the sleepers supporting the railway squeezing and vibrations. The ballast compactness is the most direct index for evaluating the effect of tamping operation. This paper presents an experimental method used to detect the railway ballast compactness 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 before and after 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 during tamping process.
Experimental and Numerical Study of Railway Ballast Compactness during Tamping Process
Advanced Materials Research ; 690-693 ; 2730-2733
2013-05-14
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Discrete Element Method Simulation of Mesomechanics of Railway Ballast during Tamping Process
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