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Research papers, The University of Auckland Library

Test results are presented for wall-diaphragm plate anchor connections that were axially loaded to rupture. These connection samples were extracted post-earthquake by sorting through the demolition debris from unreinforced masonry (URM) buildings damaged in the Christchurch earthquakes. Unfortunately the number of samples available for testing was small due to the difficulties associated with sample collection in an environment of continuing aftershocks and extensive demolition activity, when personal safety combined with commercial activity involving large demolition machinery were imperatives that inhibited more extensive sample collection for research purposes. Nevertheless, the presented data is expected to be of assistance to structural engineers undertaking seismic assessment of URM buildings that have existing wall-diaphragm anchor plate connections installed, where it may be necessary to estimate the capacity of the existing connection as an important parameter linked with determining the current seismic capacity of the building and therefore influencing the decision regarding whether supplementary connections should be installed.

Images, UC QuakeStudies

Three excavators sit on top of the demolition rubble where the Crowne Plaza Hotel once stood. In the background are the Forsyth Barr building (left), the Victoria Apartments (centre), and the Environment Court building (right).

Images, UC QuakeStudies

A brick building supported by shipping containers on Colombo Street. The side wall of the building has been revealed by the demolition of the adjoining building. Security fences have been placed around the building to restrict access.

Images, UC QuakeStudies

A person takes a photograph during the Rally for the Cathedral in Cranmer Square. He is wearing a mask identified with the "Anonymous" movement. The rally protested the proposed demolition of the ChristChurch Cathedral.

Images, UC QuakeStudies

Damage to a building on Colombo Street. Beside it is a sign that says 'Footpath closed Please use alternative route'. Ongoing demolition work and street cordons in Christchurch mean that gardens are left and becoming overgrown.

Images, UC QuakeStudies

A digitally manipulated image of an excavator demolishing a house. The photographer comments, "My neighbour I thought was going to be one of the first to be rebuilt in the area after being damaged in the 22 February 2011 earthquake, but the builders have knocked it down and not returned yet".

Images, UC QuakeStudies

The Wizard of Christchurch, who has launched a campaign to save the Christ Church Cathedral from demolition. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.

Images, UC QuakeStudies

View down Gloucester Street at a cordon access point, with a cordon station on the left and road cones to divert traffic in front. In the background, diggers sit on the demolition site where the Brannigans building was.

Images, UC QuakeStudies

The head of a digger resting on a pile of soil next to QEII Stadium. The photographer comments, "The deconstruction of the QEII stadium in Christchurch pauses on a Sunday".

Images, UC QuakeStudies

The Wizard of Christchurch, who has launched a campaign to save the Christ Church Cathedral from demolition. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.

Images, UC QuakeStudies

Looking down Gloucester Street where ongoing demolition and reconstuction work are continuing. Street signs on the road say 'no road marking' and 'truck crossing'. In the background is a Wilson's carpark, converted from a site where a building has been demolished.

Images, UC QuakeStudies

The Wizard of Christchurch, who has launched a campaign to save the Christ Church Cathedral from demolition. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.