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

Table 16

Comparison of vertical dynamic performance of the train on the floating-slab-track bed.

Calculation working condition	Vertical-vibration acceleration of the car body (g)				Vertical stability of the car body
	L = 3.6 m		L = 4.8 m		L = 3.6 m		L = 4.8 m
	−	+	−	+	−	+	−	+
Straight line-140	0.048	0.047	0.042	0.042	1.550	1.549	1.563	1.558
Straight line-160	0.055	0.053	0.050	0.048	1.825	1.823	1.829	1.826
Straight line-200	0.059	0.057	0.057	0.053	1.872	1.870	1.872	1.871
Curve-140	0.045	0.045	0.044	0.041	1.620	1.619	1.630	1.626
Curve-160	0.050	0.049	0.046	0.045	1.651	1.649	1.654	1.652
Maximum change (%)	3.64		7.01		0.12		0.32

L: length; −: side-mounted isolators are not installed; +: side-mounted isolators are installed.