Performance of Bridges with Damaged Elements in Extreme Flood Events

Lokuge, W. and Fraser, C. and Karunasena, W. (2020) Performance of Bridges with Damaged Elements in Extreme Flood Events. In: 25th Australasian Conference on Mechanics of Structures and Materials (ACMSM25), 4–7 Dec, 2018, Brisbane, Australia.

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Recent floods in Southeast Queensland, Australia have caused detrimental impacts on the social, environmental and economic aspects of the country. Bridges are considered as critical infrastructure because in a time of a disaster and during its recovery stage, bridges provide access for emergency services to flood affected communities. A community has the potential to be isolated if a bridge crossing a river or creek is damaged by flooding. Therefore it is important to understand the impact that flooding has on bridges so that they can be made less vulnerable to damage from these extreme events. In order to analyse the effects of flooding, a finite element model of a case study bridge was created using the software package Strand7. The flood loads determined by the Australian Standards were applied to a case study bridge (Tenthill Creek Bridge near Gatton in the Lockyer Valley, Queensland). Damage to the bridge was also simulated by adding weakened elements to the main structural elements of the bridge. In order to compare different load cases and damage scenarios performance indicators were used to assess the vulnerability. It was found that a damaged girder subjected to log impact loading produced the maximum stress in the bridge.

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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: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Date Deposited: 05 Aug 2020 05:55
Last Modified: 09 Oct 2020 05:16
Uncontrolled Keywords: Floods; Infrastructure; Bridge failure; Resilience; Impact load
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090505 Infrastructure Engineering and Asset Management
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
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