Application of Polyurethane Polymer and Assistant Rails to Settling the Abnormal Vehicle-Track Dynamic Effects in Transition Zone between Ballastless and Ballasted Track
Table 2
Maximum wheel-rail contact forces and reduction ratios for different settlement patterns.
Transition settlement pattern
Without settlement
With polyurethane polymer alone
With the combination use of polyurethane polymer and assistant rails
Type of wheel
Left wheel
Right wheel
Left wheel
Right wheel
Left wheel
Right wheel
Upper peak of wheel-rail contact force
72.79
69.60
63.60
62.74
60.69
60.74
Lower peak of wheel-rail contact force
50.71
52.53
53.32
53.56
57.30
57.90
Variance between upper and lower peak of wheel-rail contact force
22.08
17.07
10.28
9.18
3.39
2.84
Reduction ratio compared with without settlement (%)
