Reliability Evaluation of Bridges Based on Nonprobabilistic Response Surface Limit Method

Table 3

Comparison of calculation results.

	Iterative steps	Nonprobabilistic reliability index	Relative error
Analytical method	—	1.7446	—
One-dimensional optimization algorithm	—	1.7446	0
Quadratic form response surface method	2	1.8391	5.4 × 10^−2
Primary response surface method	2	1.7446	0

Note. Relative error is obtained by comparing the nonprobabilistic reliability index calculated using other methods with that calculated using the analytical method.