Exploring a Risk Evaluation Tool for New Zealand State Highway Network National Resilience Project


Abstract eng:
The New Zealand Transport Agency is a Crown entity with primary roles including to build, maintain and operate the state highway network, and to plan and invest in an integrated transport system. The Transport Agency has formulated a highway Resilience Project and seeks to develop a framework that can be used to prioritise investment to enhance the highway resilience. This paper describes the work undertaken by GNS Science in assisting in the development of a Highway Network Resilience Prioritization Framework within which the effectiveness of various mitigation measures that aim to improve highway resilience can be measured. It included the development of a GIS based Risk Evaluation Tool (RET) that evaluates the disruption state of highway network when subjected to geological and hydrological hazard events of varying intensities. The approach used comprised of three main components: (a) Defining the geographic location of the highway and associated assets; (b) Developing various suites of hazard layers for the primary natural hazard perils to which NZ highways are exposed; and (c) For each asset or road segment, defining the relationship between damage or disruption states and the intensity of each specific hazard. The tool accepts the above inputs, overlays the hazard severity on the defined network and determines the possible damage and disruption states of each highway segment. The disruption results are presented in both spreadsheet format and also graphically with the different severities of disruption color coded on the outage map. As a proof-of-concept validation the tool has been tested on a pilot study area route in the Wellington region and has shown to deliver the desired results. It is envisaged that the highway disruption results from the RET could inform other elements of the overall Resilience Framework.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.



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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 3957.:
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