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Images, UC QuakeStudies

Emergency personnel lifting a metal beam from the ruins of the Canterbury Television Building on Madras Street during their search for trapped people. Behind them smoke is billowing from the remains of the building.

Images, UC QuakeStudies

A photograph of the badly-damaged Winnie Bagoes building on Colombo Street. The left side of the building has collapsed and a metal pole anchored to a concrete block is holding up the remains.

Images, UC QuakeStudies

Emergency personnel lifting a metal beam from the ruins of the Canterbury Television Building on Madras Street during their search for trapped people. Behind them smoke is billowing from the remains of the building.

Images, UC QuakeStudies

A photograph of the badly-damaged Winnie Bagoes building on Colombo Street. The left side of the building has collapsed and a metal pole anchored to a concrete block is holding up the remains.

Images, Canterbury Museum

One metal hanging light fixture with three globes. Frame features a stylized plants motif. The globes feature green, brown and white glass petals welded into a globe shape. Owner of Hadleigh House 1904-1921

Images, UC QuakeStudies

Emergency personnel sliding a metal beam down a sheet of corrugated plastic on the collapsed Canterbury Television Building. Smoke is billowing from the ruins, which were still partly on fire when the photograph was taken.

Research papers, The University of Auckland Library

Following the 2010/2011 Canterbury (New Zealand) earthquakes the seismic design of buildings with precast concrete panels has received significant attention. Although this form of construction generally performed adequately in Christchurch, there were a considerable number of precast concrete panel connection failures. This observation prompted a review of more than 4700 panel details to establish representative details used in both existing and new multi-storey and low rise industrial precast concrete buildings. The detailing and quantity of each reviewed connection type in the sampled data is reported, and advantages and potential deficiencies of each connection type are discussed. Following the Canterbury earthquakes, it was observed that brittle failure had occurred in some grouted metal duct connections used for precast concrete wall panels, resulting in recommendations for more robust detailing of this connection type. A set of experimental tests was subsequently performed to investigate the in-plane seismic behaviour of precast concrete wall panel connections. This testing comprised of seven reversed cyclic in-plane tests of fullscale precast concrete wall panels having wall-to-foundation grouted metal duct connections. Walls with existing connection detailing were found to perform adequately when carrying low axial loads, but performance was found to be less satisfactory as the axial load and wall panel length increased. The use of new recommended detailing was observed to prevent brittle connection response and to improve the robustness of the reinforcement splice. A parametric investigation was conducted using the finite element method to predict the failure mode of metal duct connections. From the results of the parametric study on metal duct connections it was identified that there were three possible failure modes, being reinforcement fracture, concrete spalling without metal duct pull out, and concrete spalling with metal duct pull-out. An alternative simple analytical method was proposed in order to determine the type of connection failure without using a time-consuming finite element method. Grouted sleeves inserts are an alternative connector that is widely used to connect wall panels to the foundations. The two full-scale wall panels were subjected to reversed cyclic in-plane demands until failure of either the connection or the wall panel. Wall panel failure was due to a combination of connection reinforcement pulling-out from the coupler and reinforcement fracture. In addition, non-embedded grouted sleeve tests filled with different quality of grout were conducted by subjecting these coupler assemblages to cyclic and monotonic forces.

Images, UC QuakeStudies

Corrogated roofing from the demolition of the QEII complex. The photographer comments, "This collection of galvanised roofing looks so photogenic as I walked around the partly demolished Queen Elizabeth stadium and swimming pool".

Images, UC QuakeStudies

A construction worker using a saw to cut through a metal beam from the ruins of the Canterbury Television Building. Smoke is billowing from the ruins, which were still partly on fire when the photograph was taken.

Research Papers, Lincoln University

Numerous studies have shown that urban soils can contain elevated concentrations of heavy metals (HMs). Christchurch, New Zealand, is a relatively young city (150 years old) with a population of 390,000. Most soils in Christchurch are sub-urban, with food production in residential gardens a popular activity. Earthquakes in 2010 and 2011 have resulted in the re-zoning of 630 ha of Christchurch, with suggestions that some of this land could be used for community gardens. We aimed to determine the HM concentrations in a selection of suburban gardens in Christchurch as well as in soils identified as being at risk of HM contamination due to hazardous former land uses or nearby activities. Heavy metal concentrations in suburban Christchurch garden soils were higher than normal background soil concentrations. Some 46% of the urban garden samples had Pb concentrations higher than the residential land use national standard of 210 mg kg⁻¹, with the most contaminated soil containing 2615 mg kg⁻¹ Pb. Concentrations of As and Zn exceeded the residential land use national standards (20 mg kg⁻¹ As and 400 mg kg⁻¹ Zn) in 20% of the soils. Older neighbourhoods had significantly higher soil HM concentrations than younger neighbourhoods. Neighbourhoods developed pre-1950s had a mean Pb concentration of 282 mg kg⁻¹ in their garden soils. Soil HM concentrations should be key criteria when determining the future land use of former residential areas that have been demolished because of the earthquakes in 2010 and 2011. Redeveloping these areas as parklands or forests would result in less human HM exposure than agriculture or community gardens where food is produced and bare soil is exposed.

Images, UC QuakeStudies

A pigeon perches in the beams of a damaged building. The photographer comments, "The building next door was demolished after the Christchurch earthquake, which exposed the side of this building with it's very old corrugated iron walls. Some of the sheeting was damaged and exposed parts of the interior. The pigeon was sitting on a bit of wood with the beam above it had a very serious crack. I think you would be nervous as well".

Images, UC QuakeStudies

Lyttelton band, Runaround Sue, perform at Gap Filler's "Film in the Gap!" project in Beckenham. Gap Filler have enclosed one side of their project's site with a fence made of old metal bed heads. The fence has been decorated with fairy lights.

Images, UC QuakeStudies

The roof of this collapsed building on Atlas Lane has fallen almost intact on top of the rubble. The photographer comments, "Whenever I go past this place it reminds me of a sinking ship".

Images, Canterbury Museum

One twisted rectangular metal sign engraved with the words 'Pyne Gould Corporation' in black. Recovered from the Pyne Gould Corporation Building following the 22 February earthquake. The Pyne Gould Corporation (PGC) building, which was located on Cambridge Terrace in central Christchurch, collapsed during the 22 February 2011 earthquake with 18...

Images, UC QuakeStudies

A photograph of a piece of plywood sitting on top of a pile of bricks from the Carlton Hotel. USAR codes have been spray-painted on the wood. In the foreground, metal fencing, cordon tape and a road cone have been used to cordon off the building.