Structural system reliability calculation method

Abstract

The present invention relates to a structural system reliability calculation method which comprises the following steps of S01, acquiring all failure modes of a structure system, and calculating a correlation coefficient between every two failure modes based on a first-order reliability method, S02, setting a failure probability critical value 0 and a correlation coefficient boundary value 0, S03,enabling k failure modes of which the failure probability is smaller than the threshold value 0 respectively to form a group, and p failure modes of which the correlation coefficients with any failure mode are lower than the correlation coefficient threshold value 0 respectively to form a group, S04, sequentially selecting the failure modes with risks from high to low from the remaining failure modes as references, searching for all failure modes of which the correlation coefficients are greater than a correlation coefficient boundary value 0, and dividing the remaining failure modes into q groups, and S05, deriving the reliability index of the structure system according to the clustering result obtained in the above steps. The structural system reliability calculation method provided bythe invention has the advantages that the problems of low precision and efficiency in the solution of the reliability of the system structural system consisting of the structural components with the correlation relationship are solved, the efficiency is improved, and the precision is relatively higher.

Description

technical field [0001] The invention relates to a method for calculating the reliability of a structural system, which belongs to the technical field of structural reliability analysis. Background technique [0002] Structural system reliability is the probability of an engineering structure completing a predetermined function under specified time and conditions. It is applicable to engineering fields such as housing construction, railways, highways, ports, ships, and water conservancy and hydropower. Accurate and efficient evaluation of the reliability of the structural system can provide an important basis for the selection of the system structure design scheme and the optimization of the operation and maintenance strategy. [0003] The calculation of system reliability for related components usually directly uses the theoretical integration method, which is cumbersome and time-consuming. Or use the idea of ​​approximate simplification through dimensionality reduction and...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to propose a method for calculating the reliability of the structural system with improved efficiency and higher precision for the problem of insufficient accuracy and efficiency in solving the structural system reliability of the system composed of structural components with related relationships

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