Interval Nonprobabilistic Reliability Analysis for Ancient Landslide considering Strain-Softening Behavior: A Case Study

Table 6

Results in probabilistic reliability calculations under different variable distributions.

COV of log-normal variables				Beta distribution parameters		(%)	PRI-	INPRI-
				q	r
0.2	0.2	5	5	1	6	10.85	0.9443	1.2029
0.5	0.5	10	10	1	6	34.76	0.8364
0.2	0.2	5	5	6	6	10.71	1.4016
0.5	0.5	10	10	6	6	34.91	1.3567
0.2	0.2	5	5	6	2	11.36	2.1075
0.5	0.5	10	10	6	2	35.75	1.7697

Note: COV: coefficient of variation, q and r are the parameters describing the probability density distribution, is the probability of failure, PRI- is the probability reliability index, and INPRI- is interval nonprobability of failure. More details are shown in the literature [26].