Open Access

Table B4

Parameters of the optimised superstructure designs with periodically varying pad stiffness and sleeper mass in pairs. The optimisation was carried out according to the second optimisation criterion.

n p Prop. Sleeper positions
Unit
1 2 3 4 5 6 7 8
1
s p
450 (Reference)
MN/s

m s
150 (Reference)
kg
2 s p 255.6 700 MN/s

m s
171.4
137.1
kg
3 s p 200 450 700 MN/s

m s
180
180
120
kg
4 s p 200 450 450 700 MN/s

m s
180
120
180
120
kg
5 s p 200 200 700 450 700 MN/s

m s
180
180
120
180
120
kg
6 s p 200 700 450 450 200 700 MN/s

m s
180
120
180
180
180
120
kg
7 s p 200 450 450 450 700 200 700 MN/s

ms
180
120
180
180
120
180
120
kg
8 s p 200 200 450 450 700 700 200 700 MN/s
m s 180 180 180 180 120 120 120 120 kg

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