Abstract:
This paper reports the initial findings of a new research project funded by the Ministry of
Business, Innovation and Employment (MBIE). The research, in collaboration with the
Geological Nuclear Sciences (GNS), will provide enhanced understanding of the performance
and resilience of underground utilities under seismic loading.
Information exists in various formats on the damage to underground utilities following the
Canterbury earthquakes. This information will be compiled and analysed to evaluate the
applicability of current models of seismic response. Data from ground deformation, geology and
seismic loading will also be assessed together with the damage data. Areas of interest identified
in the analysis stage unexpected or previously unreported forms of damage, for example - will
be further studied through finite element analysis backed with selected full scale testing.
Initial findings from the first year of the project work will be presented. This will include the
aspects identified from the analysis of the damage data, and the initial findings from the full
scale testing and numerical analysis, together with initial recommendations for current design
practises and guidelines.
A key goal of the project is to help develop robust, evidence-based national recommendations
and guidelines to help reduce the impact of future seismic events and to improve the resilience
of communities after a seismic event in a cost effective manner. Risk management and damage
prediction will also be enhanced providing greater reliability for insurers and incident managers.
