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Images for Earthquakes; more images...

Images, UC QuakeStudies

A colour photograph of the Fisher's Building, seen from the corner of Lichfield and High Streets. The photograph was taken before the 4 September 2010 earthquake.

Images, eqnz.chch.2010

Tilers tattoo outside Ambrose Heal File Ref: CCL-2011-03-17-St Albans-IMG_0386 From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Miss Feaver florist on Hills Road File Ref: CCL-2011-03-17-St Albans-IMG_0390 From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Miss Feaver Florist on Hills Road File Ref: CCL-2011-03-17-St Albans-IMG_0389 From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0859.JPG From the collection of Christchurch City Libraries.

Research papers, The University of Auckland Library

Utility managers are always looking for appropriate tools to estimate seismic damage in wastewater networks located in earthquake prone areas. Fragility curves, as an appropriate tool, are recommended for seismic vulnerability analysis of buried pipelines, including pressurised and unpressurised networks. Fragility curves are developed in pressurised networks mainly for water networks. Fragility curves are also recommended for seismic analysis in unpressurised networks. Applying fragility curves in unpressurised networks affects accuracy of seismic damage estimation. This study shows limitations of these curves in unpressurised networks. Multiple case study analysis was applied to demonstrate the limitations of the application of fragility curves in unpressurised networks in New Zealand. Four wastewater networks within New Zealand were selected as case studies and various fragility curves used for seismic damage estimation. Observed damage in unpressurised networks after the 2007 earthquake in Gisborne and the 2010 earthquake in Christchurch demonstrate the appropriateness of the applied fragility curves to New Zealand wastewater networks. This study shows that the application of fragility curves, which are developed from pressurised networks, cannot be accurately used for seismic damage assessment in unpressurised wastewater networks. This study demonstrated the effects of different parameters on seismic damage vulnerability of unpressurised networks.

Images, eqnz.chch.2010

Shipping containers against the cliff on the road to Sumner, Christchurch. File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_015.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Coffee break before more checking on leaking water mains. File Ref: CCL-2011-03-17-St Albans-IMG_0375 From the collection of Christchurch City Libraries.