Stahl, Philip (2023) Investigation of Culvert Failures During Extreme Flood Events. [USQ Project]
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Abstract
Culverts are vital pieces of road infrastructure which offer a cost-effective solution for providing road or rail crossings across natural creeks and drainage channels. This makes culverts vulnerable to damage or complete failure when discharges close to or greater than their operating capacity occur during extreme flood events. A culverts resilience to failure can be imperative in the immediate aftermath of such an event to allow effective disaster recovery to take place. Furthermore, long term social and financial consequences can result from subsequent road closures and repair works where extensive damage to road networks occur.
While some design guidelines do provide effective advice on improving the resilience of culverts subjected to extreme flood events, it is evident that this knowledge is not adopted in standard practice within many jurisdictions across Australia.
This project has identified the common failure mechanisms experienced by culverts during extreme flood events through data collected from a field investigation of damaged culverts in the Lake Hume region. Information from this field investigation has then been used to guide a numerical investigation aimed at identifying the main vulnerabilities of culverts in extreme flood scenarios and how these vulnerabilities can theoretically be overcome.
Based on observations from the field and numerical investigations, range of potential protection measures have been explored which would have the effect of increasing a culverts resilience to failure during an extreme flood event. Finally, a number of recommendations for improving the resilience of culverts subjected to extreme flood events have been proposed as well as potential avenues for future research in this field.
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| Item Type: | USQ Project |
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| Item Status: | Live Archive |
| Faculty/School / Institute/Centre: | Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -) |
| Supervisors: | Lokuge, Weena; Karunasena, Karu |
| Qualification: | Bachelor of Engineering (Honours) (Civil) |
| Date Deposited: | 01 Oct 2025 23:48 |
| Last Modified: | 01 Oct 2025 23:48 |
| Uncontrolled Keywords: | culvert; flood |
| URI: | https://sear.unisq.edu.au/id/eprint/53004 |
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