Canonical correlation analysis-based multi-element seismic damage potential assessment method

Abstract

The invention provides a canonical correlation analysis-based multi-element seismic damage potential assessment method. The method comprises the following steps of: selecting a seismic oscillation record; establishing a nonlinear finite element analysis model of a structure; selecting a plurality of canonical seismic oscillation intensity parameters as basic seismic oscillation intensity parameters so as to calculating seismic oscillation intensity of the seismic oscillation record; selecting a plurality of canonical structure damage parameters as basic structure damage parameters so as to calculate structure damage; carrying out canonical correlation analysis to ensure that relevance between a canonical seismic oscillation intensity variable and a canonical structure damage variable is maximum; and taking the canonical seismic oscillation intensity variable as a parameter for describing multi-element seismic damage potential so as to assess relative contribution rates, to the multi-element seismic damage potential, of the basic seismic oscillation intensity parameters and then determining important seismic oscillation intensity parameters of the seismic damage potential. Accordingto the method, influences of a plurality of seismic oscillation intensity parameters are considered, so that the size of the seismic damage potential can be predicted more correctly, and the damage degree sizes of the structure under different seismic oscillation actions can be assessed more reasonably.

Description

technical field [0001] The invention belongs to the technical field of earthquake engineering and disaster prevention and reduction engineering, and in particular relates to a multivariate earthquake damage potential evaluation method based on canonical correlation analysis. Background technique [0002] In earthquake engineering research, due to the randomness of earthquake records and the complex mechanism of structural failure states, it has become an important issue in earthquake resistance research at home and abroad to evaluate structural damage caused by earthquake motions. Scholars at home and abroad have proposed some macro-seismic intensities to evaluate the damage potential of earthquake motions, which mainly measure the magnitude of earthquake destructive force subjectively, but cannot quantitatively evaluate the structural damage caused by earthquakes. Until the emergence of seismic monitoring instruments, according to the results of instrument records, research...

AI Technical Summary

Problems solved by technology

A single parameter of earthquake intensity cannot well describe the characteristics of earthquake motion, and cannot comprehensively and accurately evaluate the damage potential of earthquake motion.

And due to the complexity and diversity of ground structures, building materials, building functions, structural forms, structural sites and other reasons, the single structural damage parameters cannot truly reflect the damage state of the structure.

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