Sensitivity Analysis and Experimental Verification of Bolt Support Parameters Based on Orthogonal Experiment

Table 1

Orthogonal experiment level design.

Influencing factors		Number of levels
		1	2	3	4
A	Bolt spacing (mm)	700	800	900	1000
B	Bolt distance between two rows (mm)	700	800	900	1000
C	Bolt length (mm)	1800	2000	2200	2400
D	Horizontal contained angle (°)	0°	20°	40°	60°
E	Pretightening force (kN)	60	80	100	120