| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
A coupling simulation method with track vibration and ballast settlement phenomena is developed for predicting the irreversible displacement (settlement) of railway ballast with transition zone or a rail joint. The present simulation method, is based on the finite element method (FEM), is used for investigating the influence of several factors in railway track, e.g. wheel running speed, joint structure and rail irregularity, on the progression of ballast settlement. The railway ballast is composed of crushed stones, and hence has spatial variation of its elastoplastic behavior. The influence of the simulated ballast settlement on the spatial variation of the mechanical behavior is estimated through the numerical tests using the stochastic FEM (SFEM).
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