Mechanical Behavior of Cracked Rock in Cold Region Subjected to Step Cyclic Loading

Table 1

Loading parameters of each stress path.

Stress path	Increment of upper stress limit at adjacent stress level (MPa)	Increment of lower stress limit at adjacent stress level (MPa)	Initial stress amplitude (MPa)	Stress amplitude at adjacent stress level (MPa)
2	40	40	40	0
3	20	20	20	0
4	40	0	40	40
5	20	0	20	20