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Images, eqnz.chch.2010

It would have been a glorious Spring day in Christchurch had it not been for the magnitude 7.1 earthquake at 4:30 am. All the water and silt you can see covering the street in this photo erupted from the ground following the earthquake.

Research papers, The University of Auckland Library

This thesis describes the strategies for earthquake strengthening vintage clay bricks unreinforced masonry (URM) buildings. URM buildings are well known to be vulnerable to damage from earthquake-induced lateral forces that may result in partial or full building collapse. The 2010/2011 Canterbury earthquakes are the most recent destructive natural disaster that resulted in the deaths of 185 people. The earthquake events had drawn people’s attention when URM failure and collapse caused about 39 of the fatality. Despite the poor performance of URM buildings during the 2010/2011 Canterbury earthquakes, a number of successful case study buildings were identified and their details research in-depth. In order to discover the successful seismic retrofitting techniques, two case studies of retrofitted historical buildings located in Christchurch, New Zealand i.e. Orion’s URM substations and an iconic Heritage Hotel (aka Old Government Building) was conducted by investigating and evaluating the earthquake performance of the seismic retrofitting technique applied on the buildings prior to the 2010/2011 Canterbury earthquakes and their performance after the earthquakes sequence. The second part of the research reported in this thesis was directed with the primary aim of developing a cost-effective seismic retrofitting technique with minimal interference to the vintage clay-bricks URM buildings. Two retrofitting techniques, (i) near-surface mounted steel wire rope (NSM-SWR) with further investigation on URM wallettes to get deeper understanding the URM in-plane behaviour, and (ii) FRP anchor are reported in this research thesis.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Canterbury Provincial Chambers on Durham Street. The top of the chamber has crumbled, and the masonry has fallen onto the footpath. Scaffolding which was erected after the 4 September 2010 earthquake has also fallen.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Canterbury Provincial Chambers on Durham Street. The top of the chamber has crumbled, and the masonry has fallen onto the footpath. Scaffolding which was erected after the 4 September 2010 earthquake has also fallen.

Images, eqnz.chch.2010

Container Love: shipping container decorated with knitted and crocheted squares. Sumner, Christchurch. File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_026.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Container Love: shipping container decorated with knitted and crocheted squares. Sumner, Christchurch. File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_031.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Sumner Library (currently closed), in Sumner, Christchurch File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_038.JPG From the collection of Christchurch City Libraries.