Performance Analysis of Prefabricated Steel-Spring Floating-Slab Track and Its Application to Urban Express Rail Transit

Table 3

Basic parameters of the 3.6 m long prefabricated floating slab.

Parameter name	Value
Vibration-isolator model	GSIU (double cylinder) isolator
Vibration-isolator stiffness	Vertical stiffness: 13.2 kN/mm
	Lateral stiffness: 9.8 kN/mm
Vibration-isolator damping	Vertical damping: 0–100 N·s/mm
	Lateral damping: 40.0 N·s/mm
Inside-isolator spacing	1800 mm
Floating-slab length	3600 mm
Floating-slab width	2900 mm
Floating-slab thicknesses	350 mm, 450 mm, 550 mm
Floating-slab and other track-bed stiffness transition modes	1 to 5 transition slabs are placed adjacent to other track beds (inside isolators are spaced 1200 mm apart)