Investigation on the Behaviour of Floodway Structures Under Extreme Flood Loading

PhD by Publication


Greene, Isaac. 2022. Investigation on the Behaviour of Floodway Structures Under Extreme Flood Loading. PhD by Publication Master of Engineering (Research). University of Southern Queensland. https://doi.org/10.26192/q7q86
Title

Investigation on the Behaviour of Floodway Structures Under Extreme Flood Loading

TypePhD by Publication
Authors
AuthorGreene, Isaac
Supervisor
1. FirstA/Pr Weena Lokuge
2. SecondProf Karu Karunasena
Institution of OriginUniversity of Southern Queensland
Qualification NameMaster of Engineering (Research)
Number of Pages329
Year2022
PublisherUniversity of Southern Queensland
Place of PublicationAustralia
Digital Object Identifier (DOI)https://doi.org/10.26192/q7q86
Abstract

Floodways are infrastructure used in road design to enable safe vehicular passage across waterways susceptible to flooding at relatively low average recurrence intervals. During the significant flood events of the past decade, repeat structural damage and consistent failure mechanisms have been observed, compromising the reliability of the rural road network and thus the resilience of communities. These failures are a result of the flood loadings encountered during extreme flood events, which are not currently considered in floodway design guidelines that typically rely upon hydraulic design principles.

The primary objective of this research was to evaluate the principal structural failure mechanisms of concrete floodways. To achieve this, an industry based survey and an experimental program were conducted, and a scaled finite element model created to compare findings. This enables the typical failure mechanisms for floodways to be determined. A numerical finite element model of a full scale standard engineering floodway type was then developed and parameters applied to simulate extreme flood conditions. Modelling was then expanded to cover five standard engineering floodway types enabling a refined structural design methodology to be deduced. The finite element models were then used to determine the worst case loading scenario, and to develop a floodway design guideline with an incorporated structural design methodology.

Limited research into the structural adequacy of concrete floodways had been undertaken; the key discovery of this research was the vulnerability of concrete floodway structures to impact loading during extreme flood events. The key research outcome was the conclusive design guideline which collated the research and subsequent investigations and provided a practical end-user outcome. Through the implementation of this design guideline more resilient floodway structures will result, thus improving the reliability of the rural road network as well as community resilience and safety.

KeywordsFloodways, Road Structures, Flood Damage, Concrete Structures, Structural Resilience, Numerical Analysis
Related Output
Has partFloodways and Flood-Related Experiences: A Survey of Industry Experts and Asset Owners
Has partStructural design of floodways under extreme flood loading
ANZSRC Field of Research 2020400508. Infrastructure engineering and asset management
400510. Structural engineering
400504. Construction engineering
Public Notes

File reproduced in accordance with the copyright policy of the publisher/author.

Byline AffiliationsSchool of Engineering
Permalink -

https://research.usq.edu.au/item/q7q86/investigation-on-the-behaviour-of-floodway-structures-under-extreme-flood-loading

Download files


Published Version
Isaac Greene - Thesis_Redacted.pdf
File access level: Anyone

  • 52
    total views
  • 104
    total downloads
  • 1
    views this month
  • 5
    downloads this month

Export as

Related outputs

Qualitative investigations into floodways under extreme flood loading
Greene, Isaac Samuel, Gunasekara, Chamila, Lokuge, Weena and Karunasena, Warna. 2024. "Qualitative investigations into floodways under extreme flood loading." Journal of Flood Risk Management. 17 (2). https://doi.org/10.1111/jfr3.12967
Floodway Design Process Revisted
Greene, I., Lokuge, W. and Karunasena, W.. 2020. "Floodway Design Process Revisted." Wang, Chien Ming, Ho, Johnny C.M. and Kitipornchai, Sritawat (ed.) 25th Australasian Conference on Mechanics of Structures and Materials (ACMSM25). Brisbane, Australia 04 - 07 Dec 2018 Singapore. https://doi.org/10.1007/978-981-13-7603-0_94
Structural design of floodways under extreme flood loading
Greene, Isaac, Lokuge, Weena and Karunasena, Warna. 2020. "Structural design of floodways under extreme flood loading." International Journal of Disaster Resilience in the Built Environment. 11 (4), pp. 535-555. https://doi.org/10.1108/IJDRBE-10-2019-0072
Floodways and Flood-Related Experiences: A Survey of Industry Experts and Asset Owners
Greene, I., Lokuge, W. and Karunasena, K.. 2020. "Floodways and Flood-Related Experiences: A Survey of Industry Experts and Asset Owners." Engineering for Public Works. 19, pp. 69-75.