| Title |
Evaluation of the Influence Factors on the Ballast Settlement by using the Discrete Element Method |
| Authors |
김기재(Kim, Ki Jae) ; 이성진(Lee, Sung Jin) ; 장승엽(Jang, Seung Yup) ; 황성호(Hwang, Sung Ho) |
| DOI |
https://doi.org/10.12652/Ksce.2016.36.4.0715 |
| Keywords |
개별요소법;자갈도상재료;침하;철도;유지보수 DEM;Ballast;Settlement;Railroad;Maintenance |
| Abstract |
Most of the domestic railroad tracks are ballast track and repetitive maintenance is required in this track. Therefore, it is necessary to optimize maintenance process for maintenance cost reduction and more effective maintenance. For this, it is important to develop a reasonable settlement progressive model of ballast layer. However, the behavior of ballast is different to that of soils, since ballast is composed of large coarse gravel. Thus, in this study, we carried out numerical analysis by using the discrete element method (PFC 2D) for better understanding of ballast settlement and development of reasonable settlement progressive model. And, we evaluated the settlement of ballast according to particles shape, porosity and loading conditions. |