Finite element model updating of a cable-stayed bridge using structural health monitoring data

Sharry, Thomas and Guan, Hong and Hoang, Nam and Nguyen, Andy ORCID: https://orcid.org/0000-0001-8739-8207 and Oh, Erwin (2021) Finite element model updating of a cable-stayed bridge using structural health monitoring data. In: 10th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Advanced Research and Real-World Applications (SHMII-10), 30 June - 2 July 2021, Porto, Portugal.

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Abstract

This paper presents a finite-element model of the Phu My Bridge, a 380m-main span reinforced concrete cable-stayed bridge in Ho Chi Minh City, Vietnam. The model is also updated based on accelerometer data from the on-structure sensing system for structural health monitoring (SHM). A comprehensive sensitivity study is undertaken to examine the effects of various structural parameters on the modal properties, according to which a set of structural parameters are then selected for model updating. The finite-element model is updated in an iterative procedure to minimise the differences between the analytical and measured natural frequencies. The model updating process converges after a small number of four iterations, due to the accuracy of the initial model which was achieved through careful consideration of the structural parameter values for the model, optimal element discretisation for mesh convergence, and the most sensitive parameters for updating. The updated finite-element model for the Phu My Bridge is able to reproduce natural frequencies in good agreement with measured ones and can be helpful for long-term monitoring efforts.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Date Deposited: 11 Mar 2022 02:01
Last Modified: 16 Mar 2022 05:23
Uncontrolled Keywords: structural health monitoring; sensitivity-based model updating; operational model analysis
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
40 ENGINEERING > 4005 Civil engineering > 400508 Infrastructure engineering and asset management
Socio-Economic Objectives (2020): 27 TRANSPORT > 2703 Ground transport > 270308 Road infrastructure and networks
URI: http://eprints.usq.edu.au/id/eprint/47448

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