Study on natural-frequency-based structural damage identification of steel transmission tower

Author

Wang, Hongxu

Author_Institution

Coll. of Eng., Ocean Univ. of China, Qingdao, China

fYear

2011

fDate

16-18 Dec. 2011

Firstpage

1382

Lastpage

1385

Abstract

The material theft of steel transmission towers has been an annoying problem in China, which often brings about severe accidents and imperils the entire power system. This paper deals with a feasibility study of utilizing natural frequencies in structural damage identification of steel transmission towers, which are three-dimensional spatial structures. On the basis of the finite element model of a 110 kV self-supporting steel transmission tower, the natural frequency variations between the intact and damaged states of the target transmission tower are analysed and compared. Finally, the influence of structural damage on natural frequencies is summarised, and the feasibility of real-time monitoring on transmission tower against steel theft is verified through some numerically simulated damage identification tests.

Keywords

accident prevention; poles and towers; power systems; steel; structural engineering; China; accidents; natural-frequency-based structural damage identification; power system; steel theft; steel transmission tower; three-dimensional spatial structures; Finite element methods; Monitoring; Poles and towers; Power cables; Reliability; Steel; Vibrations; damage identification; natural frequency; power cable; power transmission tower; structural damage;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation, Mechanical, and Electrical Engineering (TMEE), 2011 International Conference on

Conference_Location

Changchun

Print_ISBN

978-1-4577-1700-0

Type

conf

DOI

10.1109/TMEE.2011.6199464

Filename

6199464