Substructural Identification of Flexural Rigidity for Beam-Like Structures SCIE SCOPUS

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Title
Substructural Identification of Flexural Rigidity for Beam-Like Structures
Author(s)
Koo, Ki-Young; Yi, Jin-Hak
KIOST Author(s)
Yi, Jin Hak(이진학)
Publication Year
2015
Abstract
This study proposes a novel substructural identification method based on the Bernoulli-Euler beam theory with a single variable optimization scheme to estimate the flexural rigidity of a beam-like structure such as a bridge deck, which is one of the major structural integrity indices of a structure. In ordinary bridges, the boundary condition of a superstructure can be significantly altered by aging and environmental variations, and the actual boundary conditions are generally unknown or difficult to be estimated correctly. To efficiently bypass the problems related to boundary conditions, a substructural identification method is proposed to evaluate the flexural rigidity regardless of the actual boundary conditions by isolating an identification region within the internal substructure. The proposed method is very simple and effective as it utilizes the single variable optimization based on the transfer function formulated utilizing Bernoulli Euler beam theory for the inverse analysis to obtain the flexural rigidity. This novel method is also rigorously investigated by applying it for estimating the flexural rigidity of a simply supported beam model with different boundary conditions, a concrete plate-girder bridge model with different length of an internal substructure, a cantilever-type wind turbine tower structure with different type of excitation, and a steel box-girder bridge model with internal structural damages.
ISSN
1070-9622
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2611
DOI
10.1155/2015/726410
Bibliographic Citation
SHOCK AND VIBRATION, 2015
Publisher
HINDAWI LTD
Subject
DAMAGE IDENTIFICATION
Type
Article
Language
English
Document Type
Article
Publisher
HINDAWI LTD
Related Researcher
Research Interests

Ocean Energy-Tidal Current Energy Converter System,Infrastructure Management-Structural Health Monitoring,Offshore Wind,해양에너지-조류발전시스템,시설물 유지관리-구조건전성 평가,해상풍력

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