Building Vibration Prediction Induced by Moving Train with Random Forest

Table 1

Calculation parameters of train model.

Name	Unit	CRH2 (locomotive)	CRH2 (car)
Overall vehicle mass Mc	kg	3160	30500
Bogie quality Mt	kg	3200	2600
Wheelset quality	kg	2000	1910
Moment of inertia of vehicle body nodding Jc	kg·m^2	1.867 × 10^6	1.279 × 10^6
Moment of inertia of bogie nodding Jt	kg·m^2	1.753 × 10^3	1.424 × 10^3
Primary suspension stiffness (per axle) Kpz	N/m	2.352 × 10^6	2.488 × 10^6
Primary suspension damping (per axle) Cpz	N·s/m	1.96 × 10^5	3.92 × 10^5
Secondary suspension stiffness Ksz	N/m	2.291 × 10^6	1.982 × 10^6
Secondary suspension damping Csz	N·s/m	1.174 × 10^6	1.96 × 10^6
Vehicle length l	m	25	25
Vehicle spacing lc	m	17.5	17.5
Wheelbase of bogie lt	m	2.5	2.5
Wheel rolling circle radius R	m	0.43	0.43