Modeling of Coupling Mechanism between Ballast Bed and Track Structure of High-Speed Railway

Figure 11

Spatial distribution of ballast contact force: (a) before train passing, (b) when the train passes at 200 km/h, (c) when the train passes at 250 km/h, and (d) when the train passes at 300 km/h.

(a)

(b)

(c)

(d)