Multi-Factor Modeling Method of the Load Sharing Ratio under Moving Train Loads

Table 3

Parameter sensitivity analysis conditions.

Condition	(km·h^−1)	ma (t)	kf (MN·m^−1)	cf (kN·s·m^−1)	a (m)	Et (MPa)	ks (MN·m^−1)
1	80	14.80	40.73	9.90	0.60	35 500	862.11
2	88	14.80	40.73	9.90	0.60	35 500	862.11
3	80	16.28	40.73	9.90	0.60	35 500	862.11
4	80	14.80	44.80	9.90	0.60	35 500	862.11
5	80	14.80	40.73	10.89	0.60	35 500	862.11
6	80	14.80	40.73	9.90	0.66	35 500	862.11
7	80	14.80	40.73	9.90	0.60	39 050	862.11
8	80	14.80	40.73	9.90	0.60	35 500	948.32

is the train speed; m_a is the axle load; k_f is the fastening stiffness; c_f is the fastening damping; a is the fastening spacing; E_b is the trackbed elastic modulus; and k_s is the subsoil stiffness, that is, the stiffness of the equivalent spring of subsoil.