Acoustic optimisation of the rail track by targeted variation of continuous superstructure parameters along the track

Open Access

Table B6

Parameters of the optimised superstructure designs of the total variation consisting of the periodic pair variation of the pad stiffness and the sleeper mass as well as the parallel stochastic variation in the sleeper spacing using σ = 0.109 m. The optimisation was carried out according to the first optimisation criterion.

n _p	Prop.	Sleeper positions								Unit
n _p	Prop.	1	2	3	4	5	6	7	8	Unit
1	s _p	450 (Reference)								MN/s
	m _s	150 (Reference)								kg
	d _s	0.6 (Reference)								m
4	s _p	200	450	450	700	…				MN/s
	m _s	180	120	180	120					kg
	d _s	0.6 (σ = 0.109 m)								m
6	s _p	200	700	450	450	200	700	…		MN/s
	m _s	180	120	180	180	180	120			kg
	d _s	0.6 (σ = 0.109 m)								m
7	s _p	200	450	450	450	700	200	700	…	MN/s
	m _s	180	120	180	180	120	180	120		kg
	d _s	0.6 (σ = 0.109 m)								m
8	s _p	200	200	450	450	700	700	200	700	MN/s
	m _s	180	180	180	180	120	120	180	120	kg
	d _s	0.6 (σ = 0.109 m)								m

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