Structure damage identification method based on IWOA

An identification method and structural damage technology, applied in the field of structural damage identification based on IWOA, can solve problems such as structural damage and huge maintenance costs, and achieve the effect of avoiding modal analysis steps and good identification ability

Inactive Publication Date: 2019-08-20
FUZHOU UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

If the structural damage is not treated and reinforced in time, it may lead to huge maintenance costs, and in extreme cases, it may even lead to structural damage

Method used

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  • Structure damage identification method based on IWOA
  • Structure damage identification method based on IWOA
  • Structure damage identification method based on IWOA

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0056] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0057] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention relates to a structure damage identification method based on IWOA, and the method comprises the steps: firstly, building an identification model of structure physical parameters, carrying out the coding of the identified structure physical parameters (mass, rigidity and damping ratio), and reasonably setting the searching range of the parameters; establishing a fitness function according to the actually measured power time history response data of the structure; and finally, optimizing the fitness function by utilizing an improved whale optimization algorithm, and searching an optimal solution. The improved whale algorithm effectively overcomes the defects that a traditional whale optimization algorithm is low in convergence precision and prone to falling into local optimization in the later iteration period. The structural physical parameter identification method provided by the invention is a time domain optimization method, namely, parameter optimization is carried outby directly utilizing structural dynamic time history response data, a modal analysis step in a frequency domain method is avoided, and the structural physical parameter identification method has good identification capability on structural quality, rigidity and damping and can be applied to structural model correction.

Description

technical field [0001] The invention relates to the technical field of structural damage identification, in particular to an IWOA-based structural damage identification method. Background technique [0002] With the development of economy, the advancement of science and technology, the requirements of human society are increasing day by day, many infrastructures such as large bridges, water conservancy dams, high-rise buildings, long-span public buildings, towering structures, etc. have been built, and the scale of these engineering structures is getting larger and larger. At the same time, people have put forward higher and higher requirements for its safety. The design life of civil engineering structures is usually several decades or even hundreds of years. Caused the accumulation of damage and the attenuation of structural resistance. If the structural damage is not treated and reinforced in time, it may lead to huge repair costs, and in extreme cases, it may even lead...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06N3/00
CPCG06N3/006G06F30/20
Inventor 范千陈振健夏樟华
Owner FUZHOU UNIV
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