A non-destructive method for damage detection in steel-concrete structures based on finite eigendata

被引：9

作者：

Jimbo, Shuichi ^{[2
]}

Morassi, Antonino ^{[3
]}

Nakamura, Gen ^{[2
]}

Shirota, Kenji ^{[1
]}

机构：

[1] Aichi Prefectural Univ, Dept Informat Sci & Technol, Aichi 4801198, Japan

[2] Hokkaido Univ, Dept Math, Sapporo, Hokkaido 0600810, Japan

[3] Univ Udine, Dipartimento Ingn Civile & Architettura, I-33100 Udine, Italy

来源：

INVERSE PROBLEMS IN SCIENCE AND ENGINEERING | 2012年 / 20卷 / 02期

基金：

日本学术振兴会;

关键词：

inverse eigenvalue problems; steel-concrete structures; variational methods; perturbation analysis; INVERSE DYNAMICAL PROBLEM; COMPOSITE BEAMS; FREQUENCY MEASUREMENTS; MODAL-ANALYSIS; CONNECTION; VIBRATIONS;

D O I：

10.1080/17415977.2011.605884

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article proposes a non-destructive method for damage detection in steel-concrete beams based on finite spectral data associated with a given set of boundary conditions. The inverse problem consists of determining two stiffness coefficients of the connection between the steel beam and the concrete beam. The inverse problem is transformed to a variational problem for a cost function which includes eigenvalue data and transversal displacements of eigenfunctions. A projected gradient method which uses the analytical expressions of the first partial derivatives of the eigenvalues and eigenfunctions is proposed for identifying the unknown coefficients. The results of an extended series of numerical simulations on real steel-concrete beams are presented and discussed.

引用

页码：233 / 270

页数：38

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