Public steel structure building micro-strain prediction method and system

Abstract

The invention discloses a public steel structure building micro-strain prediction method and system. The method comprises the following steps: converting historical data of public steel structure building strain in a natural environment into micro-strain data; dividing the micro-strain data into a training set and a test set; performing adaptive decomposition on the training set by using a variational mode decomposition method to obtain a plurality of IMF components with different frequencies and high stability; training a GRU prediction model by using the IMF components of the training set, adjusting and updating weight parameters and offset parameters through a loss function, completing learning, determining parameters of the GRU prediction model, predicting data in a next time period by using the GRU micro-strain prediction sub-model, and obtaining a micro-strain prediction value of each IMF component; and superposing the micro-strain predicted values of the IMF components, and performing error comparison with a test set to complete the prediction of the strain of the public steel structure building. According to the method, the micro-strain time sequence characteristics of the public steel structure building can be mastered more meticulously, and the strain prediction precision is improved.

Description

technical field [0001] The invention belongs to the technical field of structural strain prediction, and in particular relates to a micro-strain prediction method and system for a public steel structure building. Background technique [0002] With the rapid development of my country's social economy and the needs of cultural and sports activities, the pace of national infrastructure construction is also accelerating, and the situation of building structures has undergone tremendous changes. Steel structure buildings have the advantages of high strength, light weight, material saving, uniform stress distribution, high seismic performance and fast construction speed. Therefore, more and more steel structure buildings are widely used in museums, exhibition centers, stadiums and airport terminals. This marks a new era in the development of steel structure buildings. The maturity of steel structure building analysis theory and design concept and the public's pursuit of building...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a public steel structure building micro-strain prediction method and system to solve the problem of lack of effective methods for structural micro-strain prediction in the existing public steel structure building health monitoring in view of the above-mentioned deficiencies in the prior art question

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