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Images, eqnz.chch.2010

Sadly the Chapel has been badly damaged in the magnitude 6.3 earthquake that hit Christchurch 22 February 2011. See below. The Rose Historic Chapel formerly St Mary’s Convent Chapel is the sole survivor of a group of heritage buildings in Christchurch that once comprised the St Mary’s Convent complex for the Sisters of Mercy in North Colombo St...

Images, eqnz.chch.2010

For Best View Press"L" All 23 Arts Centre heritage buildings received significant damage in the earthquake and its subsequent aftershocks, and all have been issued with a red “Unsafe” placard. As a result of the magnitude of this damage, the Arts Centre Trust Board— the body charged with ensuring this iconic precinct is preserved and pr...

Images, eqnz.chch.2010

Manchester Courts, a seven-storey building on the corner of Hereford and Manchester Streets, is a category one historic place built in 1905-1906 that up until the 7.1 earthquake, housed offices. News of the scheduled demolition provoked an emotional response from the people of Christchurch. UPDATE 14 October 2010: A group of residents is campaig...

Images, eqnz.chch.2010

Manchester Courts, a seven-storey building on the corner of Hereford and Manchester Streets, is a category one historic place built in 1905-1906 that up until the 7.1 earthquake, housed offices. News of the scheduled demolition provoked an emotional response from the people of Christchurch. UPDATE 14 October 2010: A group of residents is campaig...

Images, Alexander Turnbull Library

In the foreground PM John Key drives a bulldozer over Christchurch; in the background two engineers read a newspaper report that says 'P.M. gives false demolition number, PM gives false World Cup hope' and one of them says 'Now I know why those things are called BULLdozers..' Context - Prime Minister John Key is sticking to a government estimate that 10,000 Christchurch homes will need to be razed despite criticism that he should wait for official figures; he also stated that 100,000 homes may need repairs, despite Civil Defence saying it has only checked 70,000 homes so far. John Key was also insisting that there was a chance of keeping World Cup rugby games in Christchurch but an official announcement on 16 March dashed those hopes. Quantity: 1 digital cartoon(s).

Audio, Radio New Zealand

It was so nearly lost. As the Christ Church Anglican Cathedral is being rebuilt, historian Edmund Bohan is releasing a history of the distinctive Gothic building. It shows it was controversial even before work started on designing it, let alone building in. From the laying of the foundations to the official opening, it took 40 years, after squabbles over pretty much every aspect of its construction - not to mention the huge problems raising the money to build it in the City Centre. In Heart of the City: The Story of Christchurch's Controversial Cathedral, Edmund is critical of the former Anglican Bishop Victoria Matthews' determination to demolish the badly-damaged cathedral after the Canterbury earthquakes, to replace it with a modern church. And he tells Lynn Freeman he's very much looking forward to seeing the Cathedral restored to its former glory after a lengthy and pricey rebuild. But first he sets the scene. Back in the 1860s, there was controversy over where the cathedral should go, its design, whether it should be in stone or timber - even if there should be a cathedral built at all! Heart of the City: The Story of Christchurch's Controversial Cathedral, by Edmund Bohan is published by Quentin Wilson Publishing.

Images, UC QuakeStudies

A poster created by Empowered Christchurch to advertise their submission to the CERA Draft Transition Recovery Plan on social media.The poster reads, "Submission, CERA Draft Transition Recovery Plan. Seismic Risk. One thing we can learn from the past is that seismic risk in Canterbury has been underestimated before the earthquakes struck. This is confirmed in a report for EQC in 1991 (paper 2005). It is also the conclusion of the Royal Commission in the CTV report. A number of recommendations have been made but not followed. For example, neither the AS/NZS 1170.5 standard nor the New Zealand Geotechnical Society guidelines have been updated. Yet another recovery instrument is the Earthquake Prone Building Act, which is still to be passed by Parliament. As the emergency response part of the recovery is now behind us, we need to ensure sustainability for what lies ahead. We need a city that is driven by the people that live in it, and enabled by a bureaucracy that accepts and mitigates risks, rather than transferring them to the most vulnerable residents."

Research papers, The University of Auckland Library

Churches are an important part of New Zealand's historical and architectural heritage. Various earthquakes around the world have highlighted the significant seismic vulnerability of religious buildings, with the extensive damage that occurred to stone and clay-brick unreinforced masonry churches after the 2010-2011 Canterbury earthquakes emphasising the necessity to better understand this structural type. Consequently, a country-wide inventory of unreinforced masonry churches is here identified. After a bibliographic and archival investigation, and a 10 000 km field trip, it is estimated that currently 297 unreinforced masonry churches are present throughout New Zealand, excluding 12 churches demolished in Christchurch because of heavy damage sustained during the Canterbury earthquake sequence. The compiled database includes general information about the buildings, their architectural features and structural characteristics, and any architectural and structural transformations that have occurred in the past. Statistics about the occurrence of each feature are provided and preliminary interpretations of their role on seismic vulnerability are discussed. The list of identified churches is reported in annexes, supporting their identification and providing their address.

Research papers, The University of Auckland Library

The 2011, 6.3 magnitude Christchurch earthquake in New Zealand caused considerable structural damage. It is believed that this event has now resulted in demolition of about 65-70% of the building stock in the Central Business District (CBD), significantly crippling economic activities in the city of Christchurch. A major concern raised from this event was adequacy of the current seismic design practice adopted for reinforced concrete walls due to their poor performance in modern buildings. The relatively short-duration earthquake motion implied that the observed wall damage occurred in a brittle manner despite adopting a ductile design philosophy. This paper presents the lessons learned from the observed wall damage in the context of current state of knowledge in the following areas: concentrating longitudinal reinforcement in wall end regions; determining wall thickness to prevent out-of-plane wall buckling; avoiding lap splices in plastic hinge zones; and quantifying minimum vertical reinforcement. http://www.2eceesistanbul.org/

Research papers, The University of Auckland Library

Between September 4, 2010 and December 23, 2011, a series of earthquakes struck the South Island of New Zealand including the city of Christchurch producing heavy damage. During the strongest shaking, the unreinforced masonry (URM) building stock in Christchurch was subjected to seismic loading equal to approximately 150-200% of code values. Post-earthquake reconnaissance suggested numerous failures of adhesive anchors used for retrofit connection of roof and floor diaphragms to masonry walls. A team of researchers from the Universities of Auckland (NZ) and Minnesota (USA) conducted a field investigation on the performance of new adhesive anchors installed in existing masonry walls. Variables included adhesive type, anchor diameter, embedment length, anchor inclination, and masonry quality. Buildings were selected that had been slated for demolition but which featured exterior walls that had not been damaged. A summary of the deformation response measured during the field tests are presented. AM - Accepted Manuscript

Images, Alexander Turnbull Library

Text reads 'City's old chimneys are considered the no. 1 earthquake danger'. Below are several angry-looking chimneys which sing 'Chim chim-in-ey. Chim chim-in-ey, chim chim cher-oo! When the big shake's on - we're coming to get you!' Context - Invercargill City council building services manager Simon Tonkin has seen first-hand the massive damage falling chimneys inflicted on homes and nearby vehicles following the massive Christchurch quake, and says that Invercargill's old brick chimneys are the No1 danger to the city's residents and homes if a major earthquake strikes and should be removed if they are not being used. (Southland Times 6 April 2011) Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

A man gets a phonecall from the Earthquake Commission (EQC) informing him that he can 'remediate and build here again!' The call comes just as another aftershock happens causing the family and pets to huddle in a terrified crowd as the house collapses around them and they find themselves waist-deep in mud and water. Refers to the Canterbury earthquake of 4th September and its continuing aftershocks as well as the problems surrounding rebuilding. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Shows a man exhausted after a weekend of watching the All Blacks playing Ireland on TV. His wife understands the frustration of Christchurch residents waiting too long for repairs to properties. Context: Refers to frustrating delays in getting earthquake-related repairs done in Christchurch, this in large part due to slowness of insurance claims and permissions. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Text reads 'Refugees told they're not welcome in NZ...' The cartoon shows a boat full of refugees, which has tattered sails, one bearing the words 'We need a home'. A helicopter flies by and someone says 'False alarm! They're Christchurch residents trying to get out!' Context - A boat full of Sri Lanken Tamils supposedly want to come to New Zealand as refugees has been told by Prime Minister John Key that they are 'not welcome'. The pm has been accused of 'scaremongering' and that he 'has misjudged his response'. (Nelson Mail 13 July 2011). Also a reference to the plight of many people in Christchurch whose houses have been condemned by the earthquakes of 2010 and 2011. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Photographs of central Christchurch after the 2010-2012 earthquakes taken 25 February 2012 by Sean McMahon. Locations are chiefly Manchester, Saint Asaph, Cashel, Columbo and Lichfield Streets, and the Bridge of Remembrance. Images show fencing around areas closed to the public, damaged and collapsed commercial buildings, cleared sites, re-opened Cashel Street area with shops and a cafe. Source of title - Title supplied by Library Quantity: 34 digital photograph(s).

Research papers, University of Canterbury Library

On Tuesday 22 February 2011, a 6.3 magnitude earthquake struck Christchurch, New Zealand’s second largest city. The ‘earthquake’ was in fact an aftershock to an earlier 7.1 magnitude earthquake that had occurred on Saturday 4 September 2010. There were a number of key differences between the two events that meant they had dramatically different results for Christchurch and its inhabitants. The 22 February 2011 event resulted in one of New Zealand’s worst natural disasters on record, with 185 fatalities occurring and hundreds more being injured. In addition, a large number of buildings either collapsed or were damaged to the point where they needed to be totally demolished. Since the initial earthquake in September 2010, a large amount of building-related research has been initiated in New Zealand to investigate the impact of the series of seismic events – the major focus of these research projects has been on seismic, structural and geotechnical engineering matters. One project, however, conducted jointly by the University of Canterbury, the Fire Protection Association of New Zealand and BRANZ, has focused on the performance of fire protection systems in the earthquakes and the effectiveness of the systems in the event of post-earthquake fires occurring. Fortunately, very few fires actually broke out following the series of earthquake events in Christchurch, but fire after earthquakes still has significant implications for the built environment in New Zealand, and the collaborative research has provided some invaluable insight into the potential threat posed by post-earthquake fires in buildings. As well as summarising the damage caused to fire protection systems, this paper discusses the flow-on effect for designing structures to withstand post-earthquake fires. One of the underlying issues that will be explored is the existing regulatory framework in New Zealand whereby structural earthquake design and structural design for fire are treated as discrete design scenarios.

Research papers, University of Canterbury Library

© 2019, Springer-Verlag GmbH Germany, part of Springer Nature. Prediction of building collapse due to significant seismic motion is a principle objective of earthquake engineers, particularly after a major seismic event when the structure is damaged and decisions may need to be made rapidly concerning the safe occupation of a building or surrounding areas. Traditional model-based pushover analyses are effective, but only if the structural properties are well understood, which is not the case after an event when that information is most useful. This paper combines hysteresis loop analysis (HLA) structural health monitoring (SHM) and incremental dynamic analysis (IDA) methods to identify and then analyse collapse capacity and the probability of collapse for a specific structure, at any time, a range of earthquake excitations to ensure robustness. This nonlinear dynamic analysis enables constant updating of building performance predictions following a given and subsequent earthquake events, which can result in difficult to identify deterioration of structural components and their resulting capacity, all of which is far more difficult using static pushover analysis. The combined methods and analysis provide near real-time updating of the collapse fragility curves as events progress, thus quantifying the change of collapse probability or seismic induced losses very soon after an earthquake for decision-making. Thus, this combination of methods enables a novel, higher-resolution analysis of risk that was not previously available. The methods are not computationally expensive and there is no requirement for a validated numerical model, thus providing a relatively simpler means of assessing collapse probability immediately post-event when such speed can provide better information for critical decision-making. Finally, the results also show a clear need to extend the area of SHM toward creating improved predictive models for analysis of subsequent events, where the Christchurch series of 2010–2011 had significant post-event aftershocks.

Images, UC QuakeStudies

A photograph of street art on the wall of a building on Colombo Street. The artwork is by Otis Frizzell and depicts police officer Constable Nao Yoshimizu comforting the grieving relative of an earthquake victim. Constable Yoshimizu acted as liaison officer for the families of Japanese victims of the earthquake. The mural was commissioned by the New Zealand Police as a recruitment advertisement.

Images, UC QuakeStudies

A photograph of Wharetiki on Colombo Street. A temporary fence made out of wooden slats, plastic netting, and safety tape has been constructed in front of the property. USAR codes have been spray-painted on one of the front windows and a red sticker has been placed on the front door. The red sticker indicates that the building is unsafe to enter.

Images, UC QuakeStudies

Damage to The Bone Dude's Bone Carving Studio and Cultured Gallery on Fitzgerald Avenue. The brick wall is cracked, and the guttering has fallen. The photographer comments, "This building was damaged in the September earthquake in Christchurch. It was the Bone dude's bone carving studio. The motto on the wall was 'Carve your own' and it looks like the earthquakes did just that".

Images, UC QuakeStudies

A photograph of the earthquake damage to the Cathedral of the Blessed Sacrament on Barbadoes Street. The tower on the right has crumbled and the masonry has fallen to the pavement below. A car has been crushed by the fallen rubble. The dome of the left tower has collapsed and the cross at the top of the building is on a lean.

Images, UC QuakeStudies

A photograph looking south down Manchester towards the intersection of Lichfield Street. In the distance members of the Wellington Emergency Management Office Emergency Response Team are standing next to a police car on Lichfield Street. Behind this there is a group of earthquake-damaged buildings which have spilled rubble onto Manchester Street. An excavator is parked on top of this rubble.

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 off Godley Head looking west towards the face of the cliffs. Rock which fell from the cliffs is heaped at the waters edge. Some of the buildings from the coastal defence battery are visible on top of the cliff. Volcanic banding is visible in the face of the cliffs. There were severa...

Images, eqnz.chch.2010

Showing Ruben Blades (top-right section of image) on the corner of Lichfield and Manchester Streets after the 6.3 quake hit Christchurch 22 February 2011 and the building being demolished along with many others. This image also shows the remains of the very heavy snow fall we had on Monday 25 July 2011. The centre of the city is still cordoned o...

Images, eqnz.chch.2010

Damage to the Hotel Grand Chancellor can be seen in the middle. At the bottom left is the lift shaft (now fully demolished) of the CTV building which claimed over 100 lives when it collapsed in the earthquake. Taken during a scenic flight over Christchurch, New Zealand, 3 months after the deadly earthquake of 22 February, 2011. Much of the inn...

Images, eqnz.chch.2010

As buildings are demolished as a result of the earthquake in 2011, Wilson Carparking are waiting to pounce on each bit of vacant land. Someone suggested about a year ago that the city be renamed "Wilson" as that name appears more in the central city than Christchurch does! In the background the CERES NZ nibbler attacks the support structure fo...

Images, eqnz.chch.2010

The current state of the Christchurch Cathedral can be seen in the middle. The spire collapsed as a result of the earthquake. Taken during a scenic flight over Christchurch, New Zealand, 3 months after the deadly earthquake of 22 February, 2011. Much of the inner city CBD is still cordoned off and will be for some time. About 900 buildings are ...

Images, eqnz.chch.2010

Demolition continues on the old Beckenham shops after the 7.1 magnitude earthquake in Christchurch on the 4th September 2010. So sad to see history die - both buildings and business. Took this image in HDR and processed in PhotoMatix and PaintShop Pro 8. Below are two other images of the shops one soon after the earthquake and the other sever...

Images, eqnz.chch.2010

20140522_8951_EOS M-22 Demolition Of what many in Christchurch know as the Millers building, but for many recent years was the home to the Christchurch City Council, till just a week or two before the first earthquake of 2010. Now, in mid-2014 it is finally being demolished after nearly 45 months empty. A bus is leaving the new (temporary) bu...

Research papers, The University of Auckland Library

Reinforced concrete buildings that satisfied modern seismic design criteria generally behaved as expected during the recent Canterbury and Kaikoura earthquakes in New Zealand, forming plastic hinges in intended locations. While this meant that life-safety performance objectives were met, widespread demolition and heavy economic losses took place in the aftermath of the earthquakes.The Christchurch central business district was particularly hard hit, with over 60% of the multistorey reinforced concrete buildings being demolished. A lack of knowledge on the post-earthquake residual capacity of reinforced concrete buildings was a contributing factor to the mass demolition.Many aspects related to the assessment of earthquake-damaged reinforced concrete buildings require further research. This thesis focusses on improving the state of knowledge on the post earthquakeresidual capacity and reparability of moderately damaged plastic hinges, with an emphasis on plastic hinges typical of modern moment frame structures. The repair method focussed on is epoxy injection of cracks and patching of spalled concrete. A targeted test program on seventeen nominally identical large-scale ductile reinforced concrete beams, three of which were repaired by epoxy injection following initial damaging loadings, was conducted to support these objectives. Test variables included the loading protocol, the loading rate, and the level of restraint to axial elongation.The information that can be gleaned from post-earthquake damage surveys is investigated. It is shown that residual crack widths are dependent on residual deformations, and are not necessarily indicative of the maximum rotation demands or the plastic hinge residual capacity. The implications of various other types of damage typical of beam and column plastic hinges are also discussed.Experimental data are used to demonstrate that the strength and deformation capacity of plastic hinges with modern seismic detailing are often unreduced as a result of moderate earthquake induced damage, albeit with certain exceptions. Special attention is given to the effects of prior yielding of the longitudinal reinforcement, accounting for the low-cycle fatigue and strain ageing phenomena. A material-level testing program on the low-cycle fatigue behaviour of grade 300E reinforcing steel was conducted to supplement the data available in the literature.A reduction in stiffness, relative to the initial secant stiffness to yield, occurs due to moderate plastic hinging damage. This reduction in stiffness is shown to be correlated with the ductility demand,and a proposed model gives a conservative lower-bound estimate of the residual stiffness following an arbitrary earthquake-type loading. Repair by epoxy injection is shown to be effective in restoring the majority of stiffness to plastic hinges in beams. Epoxy injection is also shown to have implications for the residual strength and elongation characteristics of repaired plastic hinges.