Tunnel Probabilistic Structural Analysis Using the FORM

Table 2

Correlation coefficient matrix of random parameters.

Variable			Ten
	1	−0.5	+0.8
φ	−0.5	1	−0.3	0
Ten	+0.8	−0.3	1
				1	0.93	0.5	−0.4	−0.4	−0.07
				0.93	1	0.45	−0.3	−0.3	−0.1
		0		0.5	0.45	1	−0.7	−0.5	−0.1
				−0.4	−0.3	−0.7	1	0.3	0.2
				−0.4	−0.3	−0.5	0.3	1	0.2
				−0.07	−0.1	−0.1	0.2	0.2	1