Building structure real-time diagnosis method and device based on fusion indexes

Abstract

The invention discloses a fusion index-based building structure real-time diagnosis method and device. The method comprises steps of carrying out the interception of obtained real-time vibration data and health vibration data according to a preset diagnosis step size, and obtaining real-time sample data and health sample data; then, various structure health assessment indexes being calculated respectively, and real-time performance parameter indexes and health parameter indexes of the building structure being obtained; performing regularization and probabilization processing on the real-time performance parameter indexes and the health parameter indexes respectively, and performing fusion processing by adopting a weighted average theory, a Bayesian theory or a D-S evidence theory to obtain real-time fusion indexes and health fusion indexes; and comparing the real-time fusion index with the health fusion index to obtain the health diagnosis information and the monitoring early warning information of the building structure. According to the method, a new fusion index is constructed, so a problem that a single index cannot comprehensively reflect the health state of a building structure in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of large-scale building structure safety monitoring, in particular to a method and device for real-time diagnosis of building structures based on fusion indicators. Background technique [0002] At present, large-scale building structures in cities are becoming more and more complex, and are developing towards diversification and multi-function. The service life of the building structure is usually as long as several decades or even hundreds of years. During its use, due to the effects of excessive loads, material aging, component defects, fatigue effects and other factors, the structure will gradually accumulate damage, so that the load-bearing capacity of the structure will be reduced. Reduced capacity and reduced ability to resist natural disasters. In the event of catastrophic loads such as earthquakes and typhoons, it may suffer extremely serious damage, causing huge losses to the country and people's ...

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Problems solved by technology

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a method and device for real-time diagnosis of building structures based on fusion indicators, and constructs a new fusion indicator for evaluating the health status of building structures, so as to solve the differences mentioned in the background technology above. The problem with performance differences between metrics

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