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

Table 6

Vehicle-stability and comfort indicators for floating-slab-track bed.

Calculation working condition	Vehicle-body lateral acceleration (g)		Vehicle-body vertical acceleration (g)		Lateral-stability index		Vertical-stability index		Comfort index
	L = 3.6 m	L = 4.8 m	L = 3.6 m	L = 4.8 m	L = 3.6 m	L = 4.8 m	L = 3.6 m	L = 4.8 m	L = 3.6 m	L = 4.8 m
Straight line-140	0.032	0.034	0.047	0.042	1.707	1.708	1.549	1.558	0.733	0.733
Straight line-160	0.033	0.036	0.053	0.048	1.945	1.947	1.823	1.826	0.741	0.743
Straight line-200	0.040	0.040	0.057	0.053	2.002	2.005	1.870	1.871	0.914	0.919
Curve-140	0.058	0.057	0.045	0.041	2.117	2.115	1.619	1.626	1.102	1.105
Curve-160	0.067	0.065	0.049	0.045	2.185	2.181	1.649	1.652	1.199	1.196
Specified code limits [32, 33]	0.10		0.15		2.5 (excellent)		2.5 (excellent)		2.0 (comfortable)

L: length.