Damage detection in arch bridges using vibration based damage detection techniques

Jayasundara, N. and Thambiratnam, D. P. and Chan, T. H. T. and Nguyen, A. (2018) Damage detection in arch bridges using vibration based damage detection techniques. In: 8th International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII 2017): Structural Health Monitoring in Real-World Application, 5-8 Dec 2017, Brisbane, Australia.

Abstract

Most structures are built to have a long life. However, during this long life, they can be incurred damage due to structural deterioration, environmental effects and random actions such as impacts. Early damage assessment and appropriate retrofitting will enable the continued safe and efficient functions of the structures. In this context, vibration based techniques have emerged with the potential for reliable damage assessment. This study develops a dual criteria approach based on the vibration characteristics for detecting and locating damage in arch bridges. Steel arch bridges are one of the aesthetically pleasing bridge types in which damage has been rarely studied. In particular, the arch rib and struts (or columns in deck type bridges) which are important structural components, have received much less attention in damage detection. This study will therefore focus on damage detection in arch bridge structural components using indices based on modified Modal Flexibility (MF) and Modal Strain Energy (MSE) methods. The study is carried out through numerical simulations supported by limited experimental testing. The modelling techniques are first validated through experimental testing of a laboratory scale arch bridge model and this is followed by damage detection studies in this bridge structure. Data obtained from finite element analyses of the healthy and damaged arch bridge models are applied into the modified MF and MSE algorithms for detecting and locating the damage. Results demonstrate that the proposed method is capable of detecting damage in the arch rib and vertical columns of deck type arch bridges.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher. This conference is the largest conference in the field of Structural Health Monitoring. Its proceedings are indexed by Scopus and ranked in Scimago: https://www.scimagojr.com/journalsearch.php?q=International+Conference+on+Structural+Health+Monitoring+of+Intelligent+Infrastructure
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 July 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 July 2013 -)
Date Deposited: 05 Jul 2019 01:28
Last Modified: 09 Jan 2020 05:19
Uncontrolled Keywords: arch bridges; arches; steel bridges; strain energy; structural health monitoring
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
URI: http://eprints.usq.edu.au/id/eprint/36680

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