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

Table 4

Basic parameters of the prefabricated 4.8 m long floating-slab track.

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
Length of floating slab	4800 mm
Width of floating slab	2900 mm
Thickness of floating slabs	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 (in-slab isolators are spaced 1200 mm apart)