A new method for structural non-probabilistic reliability analysis based on interval analysis

摘要

Purpose - The purpose of this paper is to propose a robust reliability index to characterize the structural safety degree. Design/methodology/approach - On the basis of the interval theory, a new interval reliability analysis method that the structural basic variables are described by the interval lower limit and interval length to characterize the structural uncertainty is proposed in this paper. Findings - A novel structural reliability index solution method is proposed. Besides, both linear and non-linear problem of solving interval non-probabilistic reliability are further discussed in this paper. Originality/value - Based on interval theory, variables are described by interval lower limit and interval length to characterize the structural uncertainty. A novel structural reliability index solution method is proposed.