End User representatives
Road networks and critical road structures such as bridges, culverts and floodways have a vital role before, during and after extreme events to reduce the vulnerability of the community.
A major gap in the current research is the lack of assessment techniques and tools to reduce the vulnerability of road structures to enhance both community and structural resilience. This project is developing tools and techniques to enhance the resilience of road infrastructure to hazards such as floods, bushfires, earthquakes and climate change-related weather events.
The study is undertaking research to:
- Advance the understanding of the factors required for quantifying the impact of hazards on road structures.
- Understand failure mechanisms under different hazards and vulnerable structural forms, with structures grouped according to vulnerability.
Case studies have been completed and numerical analyses have been conducted to understand the vulnerability of roads to different hazards.
Flood, bushfire and earthquake have been investigated, with two case studies on bridges, and one on floodway failure. The project has also begun the development of the methodology for vulnerability modelling of bridges and floodways. A field study was undertaken to examine the community impact due to failure of road structures during the 2011 and 2013 floods in the Lockyer Valley in Queensland.
A number of workshops were also held to identify case study data and refine the methodology for vulnerability modelling.
Australian design standards for bridges and floodways have been examined and a comparative study of international standards undertaken, along with an analysis of design standards and applied loads on road structures under extreme events.
The next stage of the study will expand the vulnerability modelling and develop a GIS tool which can be used to demonstrate the benefits of the approaches developed.
Road networks and critical road structures such as bridges, culverts and flood ways have a vital role before, during and after extreme events to reduce the vulnerability of the community being served.
How does the performance of critical road structures such as bridges, culverts and floodways affect the community they serve; before, during and after the occurrence of a natural disaster?
There is a significant need to perform adequate assessment of the vulnerability of bridges and bridge networks prior to future seismic events in Australia. This study aims to identify the failure mechanism of a typical girder bridge in Australia due to a seismic event and develop an earthquake management methodology based on a probabilistic based approach.
It is important to assess the vulnerability of bridges in an extreme flood event as these critical infrastructures contribute to the resilience of the community during and in the recovery stage of the event.
It is important to investigate the vulnerability of floodways in an extreme flood event as these critical infrastructures contribute to the resilience of the rural community that they serve during and in the recovery stage of the event. This study aims to analyse the behaviour of floodways under flood loadings using a finite element modelling approach.
A fluid structure interaction using particle finite element method for the full scale reinforced concrete bridge is built to simulate the deformations of bridge piers under flood loads. The critical pier will then be tested using 6-degree of freedom system, from which the finite element model of bridge model will be calibrated. Fragillity assessment of bridge pier before and after strengthening will be performed to study the effectiveness of strengthening for enhancing the resilience of bridges under flood loads.
|Improving the resilience of existing housing to severe wind events||Prof John Ginger||James Cook University|
|Natural hazard exposure information modelling framework||Dr Krishna Nadimpalli||Geoscience Australia|
|Cost-effective mitigation strategy for building related earthquake risk||Prof Michael Griffith||University of Adelaide|
|Cost-effective mitigation strategy for flood prone buildings||Dr Tariq Maqsood||Geoscience Australia|