主催: 日本学術会議 「機械工学委員会，土木工学・建築学委員会合同IUTAM分科会」
共催: 応用物理学会, 化学工学会, 自動車技術会, 地盤工学会, 土木学会, 日本応用数理学会, 日本風工学会, 日本機械学会, 日本気象学会, 日本計算工学会, 日本計算数理工学会, 日本建築学会, 日本原子力学会, 日本航空宇宙学会, 日本混相流学会, 日本地震工学会, 日本数学会, 日本船舶海洋工学会, 日本伝熱学会, 日本物理学会, 日本流体力学会, 農業農村工学会
The ballast settlement of a ballasted track with a railjoint is simulated using a coupling method of wheel-track vibration analysis and ballast settlement analysis. The wheel-track vibration is modeled as an assembly of beams, masses and dashpots, while the ballast settlement phenomena is modeled with elastoplastic FEM with cyclic densification model. The influence of the existence of a rail irregularities around a railjoint on the simulated ballast settlement is investigated through numerical tests. The rail irregularities with a typical shape observed in a rail around a railjoint causes a relatively large permanent displacement of ballast surface near a railjoint. In the track without rail irregularities, the ballast settlement at the railjoint is smaller than one beneath the sleepers near a railjoint.
