The uncertain parameters are introduced into reliability index calculation.
Thus it makes the base for forecast and appraising the reliability index of the life -span.
Reliability of battery can be improved by kinds of redundant connection approaches when VRLA battery cell's reliability index is too small.
Based on the above reliability analysis of road section and intersection, the paper calculates all od pair subsystems reliability index value using GO methodology.
On the other hand, the construction live load factors increase with the increase of the reliability index.
The formula of reliability index is calculated in the origin space directly, so derivation and orthogonal transformation are avoided.
This paper considers influence of proof load, structures age and re-service term to the reliability index on the basis of formula given.
The reliability indexes are computed by forward and backward search of all the aggregated components according to breadth- first search method.
