An efficient reliability analysis method under hybrid uncertainty for high-dimensional problems

Autor/innen

Zi-Xin Zhang
Department of Civil Engineering, Beijing University of Technology, Beijing 100124, China
https://orcid.org/0009-0003-1851-0172
Pei-Pei Li
Department of Civil Engineering, Beijing University of Technology, Beijing 100124, China
https://orcid.org/0000-0002-9766-297X
Yan-Gang Zhao
National Key Laboratory of Bridge Safety and Resilience, Beijing University of Technology, Beijing 100124, China
https://orcid.org/0000-0002-7975-4918

Über dieses Buch

In engineering reliability assessment, simultaneously considering hybrid uncertainty is crucial for ensuring structural safety and cost efficiency. Accurately characterizing the distribution of the conditional failure probability (CFP) is therefore of great practical importance. However, when the epistemic uncertainty involves high dimensional parameters, obtaining this distribution remains a significant challenge. To address this issue, this study proposes an efficient and accurate approach that integrates simulation-based post-processing with Bayesian inference to construct the CFP distribution. Parameter samples are first generated using a good lattice point method with partially stratified sampling, followed by reliability analysis to obtain CFP realizations. Beta mixture distribution model is then employed to directly fit the CFP, with Bayesian estimation used to determine the shape parameters of the mixture. The efficiency and accuracy of the proposed approach are demonstrated through two numerical examples, covering bimodal distributions and finite-element frame structures.

Downloads

Veröffentlicht

21.08.2026

Lizenz

Creative Commons License

Dieses Werk steht unter der Lizenz Creative Commons Namensnennung 4.0 International.

Zitationsvorschlag

An efficient reliability analysis method under hybrid uncertainty for high-dimensional problems. (2026). In REC 2026 - 11th International Workshop on Reliable Engineering Computing: Reliability Computations in a Data and Model-Driven World (pp. 140-152). TUDObooks. https://doi.org/10.17877/tudobooks-11.170