[HTML][HTML] Railway ballast performance: recent advances in the understanding of geometry, distribution and degradation

C Shi, Z Fan, DP Connolly, G Jing, V Markine… - Transportation …, 2023 - Elsevier
Railway ballast performance is dictated by a complex mix of mechanical properties. These
effect its performance at the particle level for example in terms of particle degradation, but …

[HTML][HTML] Comparison of the effects and efficiency of vertical and side tamping methods for ballasted railway tracks

M Przybyłowicz, M Sysyn, U Gerber… - … and Building Materials, 2022 - Elsevier
The relatively high maintenance costs of the ballast track are related to the short lifecycle of
the ballast layer. The current vertical ballast tamping technology (eg, Plasser & Theurer …

Mechanism of sleeper–ballast dynamic impact and residual settlements accumulation in zones with unsupported sleepers

M Sysyn, M Przybylowicz, O Nabochenko, J Liu - Sustainability, 2021 - mdpi.com
Unsupported sleepers or void zones in ballasted tracks are one of the most recent and
frequent track failures. The void failures have the property of intensive development that …

Macro–meso mechanical properties of ballast bed during three-sleeper tamping operation

Z Zhang, H Xiao, Y Zhu, T Gan… - International Journal of …, 2023 - Taylor & Francis
The tamping operation is an effective means to quickly restore the status of the lines. The
purpose is to explore the three-sleeper tamping operation mechanism maintenance. First, a …

Investigation of the mechanical properties and the influence of micro-structural characteristics of aggregates using micro-indentation and Weibull analysis

SS Kasyap, S Li, K Senetakis - Construction and Building Materials, 2021 - Elsevier
Micro-indentation experiments were performed to study the correlation, both qualitatively
and quantitatively, between microstructural characteristics and mechanical properties of …

Calibration method for discrete element modeling of ballast particles

P Aela, L Zong, ZY Yin, M Esmaeili, G Jing - Computational Particle …, 2023 - Springer
The discrete element method (DEM) is widely used for the simulation of ballast behavior
under static and dynamic loading conditions. Due to the irregular shape of ballast particles …

Inconsistent effect of dynamic load waveform on macro-and micro-scale responses of ballast bed characterized in individual cycle: a numerical study

L Fu, Y Zheng, Y Qiu, S Zhou - Railway Engineering Science, 2023 - Springer
Cyclic load is widely adopted in laboratory to simulate the effect of train load on ballast bed.
The effectiveness of such load equivalence is usually testified by having similar results of …

Rheology study of ballast-sleeper interaction with particle image Velocimetry (PIV) and discrete element modelling (DEM)

Y Guo, W Jia, V Markine, G Jing - Construction and Building Materials, 2021 - Elsevier
Ballast rheology is a phenomenon that describes movements of ballast particles due to the
discrete nature, which eventually leads to the ballast bed fluid deformation after a long-time …

[HTML][HTML] Efficiency analysis and optimisation of DEM for railway ballast track simulations: Multi-layer shape model of lateral resistance

W Jia, V Markine, Y Guo - Transportation Geotechnics, 2023 - Elsevier
The railway ballast layer provides the function of bearing loading, resisting geometry
degradation, and drainage. In those related research, the behaviour of ballast assembly can …

Discrete element analysis of shape effect on the shear behaviors of ballast

W Hou, A Li, W Song - Scientific Reports, 2023 - nature.com
Railway ballast layer is an indispensable component of railway transport. Ballast
morphology plays an important effect in ballast-sleeper interaction and the durability of …