Surrogate-Based Multisource Sensitivity Analysis of TBM Driving System

Table 1

Mean values and main frequencies of the simulated loads on the cutterhead.

Direction	Mean value; (kN/kNm)	Main frequency region; (Hz)	Typical frequency; (Hz)
Axial force	1.20e4	0~10, 125~135	0.9, 130.3
Horizontal force	30.91	0~20, 100~110, 200~210	0.9, 106.2, 204.5
Vertical force	34.84	0~10, 125~135	0.9, 130.3
Torque	3.04e3	0~10, 125~135	0.9, 130.3
Horizontal moment	9.77e2	0~10, 125~135	0.9, 130.3
Vertical moment	8.27e2	0~20, 100~110, 200~210	0.9, 104, 205.7