Application of Polyurethane Polymer and Assistant Rails to Settling the Abnormal Vehicle-Track Dynamic Effects in Transition Zone between Ballastless and Ballasted Track

Figure 9

The acceleration of a wagon traveling from the bridge to the embankment.

(a) Vertical vehicle acceleration without settlement

(b) Vertical vehicle acceleration with polyurethane polymer alone

(c) Vertical vehicle acceleration with the combination use of polyurethane polymer and assistant rails