【企画】土木分野の数値解析におけるV&V（A)

[SS01A-05] Quantitative Evaluation of Estimated Residual Settlement of Poorly-Graded Crushed Stone Layers by Using DEM

*Akiko Kono¹, Takashi Matsushima² (1. Railway Technical Research Institute, 2. Tsukuba University)

Keywords:Discrete Element Model, Ballasted Track, Open MP, Angularity, Residual Settlement

The A 3D-DEM code was parallelized by using “Open MP” to improve the quantitative accuracy of estimated residual settlement of ballasted layers. Ballast grain models are also elaborate to sharpen the angularity. Then initial settlement of ballasted layer is simulated at the case under 70 running trains after ballast renewal. The simulation results showed good agreement with measured dates from real railway lines.