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Images, UC QuakeStudies

A photograph of members of the Wellington Emergency Management Office Emergency Response Team walking down Lichfield Street towards the intersection of Madras Street. There is rubble from several earthquake-damaged buildings on both sides of the road. Plastic fences and road cones have been placed on the street as cordons.

Images, UC QuakeStudies

A photograph of the earthquake-damaged Cathedral of the Blessed Sacrament on Barbadoes Street. Rubble from the collapsed tower is lying on the ground in front. A car has been crushed under this rubble. Wire fencing, shipping containers, and road cones have been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake-damaged Cathedral of the Blessed Sacrament on Barbadoes Street. Rubble from the collapsed tower is lying on the ground in front. A car has been crushed under this rubble. Wire fencing, shipping containers, and road cones have been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Observatory tower at the Christchurch Arts Centre. The top two storeys of the tower collapsed during the 22 February 2011 earthquake and the rubble spilled into the courtyard in front. A digger was used to clear the rubble away from the building. A tarpaulin has been draped over the top of the tower.

Images, UC QuakeStudies

A photograph of the earthquake damage to a group of shops on the corner of Barbadoes Street and Edgeware Road. The second storey of the shops has collapsed, and the bricks have fallen to the footpath, taking the awnings with them. Police tape and road cones have been placed around the buildings as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to the concrete beams in a room in the PricewaterhouseCoopers Building. Sections of the concrete have crumbled to reveal the steel reinforcement underneath. A number of the ceiling panels are missing and another is hanging loose. Some of the bars that hold the ceiling panels are also hanging loose.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Country Theme store on the corner of Manchester and St Asaph Street. Parts of the bricks walls have crumbled. Most of the bricks have been cleared from the footpath. Steel fences and road cones have been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to a group of shops on the corner of Barbadoes Street and Edgeware Road. The second storey of the shops has collapsed, and the bricks have fallen to the footpath, taking the awnings with them. Police tape and road cones have been placed around the buildings as a cordon.

Research papers, The University of Auckland Library

Following the magnitude 6.3 aftershock in Christchurch, New Zealand, on 22 February 2011, a number of researchers were sent to Christchurch as part of the New Zealand Natural Hazard Research Platform funded “Project Masonry” Recovery Project. Their goal was to document and interpret the damage to the masonry buildings and churches in the region. Approximately 650 unreinforced and retrofitted clay brick masonry buildings in the Christchurch area were surveyed for commonly occurring failure patterns and collapse mechanisms. The entire building stock of Christchurch, and in particular the unreinforced masonry building stock, is similar to that in the rest of New Zealand, Australia, and abroad, so the observations made here are relevant for the entire world.

Images, UC QuakeStudies

Damaged buildings along London Street. Wire fencing has been used to keep people away. From the left are the Volcano Cafe, the Lava Bar, a fish and chip shop, and the Coastal Living Design Store. Rubble from the side of the Volcano Cafe can be seen along the Canterbury Street footpath.

Research papers, The University of Auckland Library

The Global Earthquake Model’s (GEM) Earthquake Consequences Database (GEMECD) aims to develop, for the first time, a standardised framework for collecting and collating geocoded consequence data induced by primary and secondary seismic hazards to different types of buildings, critical facilities, infrastructure and population, and relate this data to estimated ground motion intensity via the USGS ShakeMap Atlas. New Zealand is a partner of the GEMECD consortium and to-date has contributed with 7 events to the database, of which 4 are localised in the South Pacific area (Newcastle 1989; Luzon 1990; South of Java 2006 and Samoa Islands 2009) and 3 are NZ-specific events (Edgecumbe 1987; Darfield 2010 and Christchurch 2011). This contribution to GEMECD represented a unique opportunity for collating, comparing and reviewing existing damage datasets and harmonising them into a common, openly accessible and standardised database, from where the seismic performance of New Zealand buildings can be comparatively assessed. This paper firstly provides an overview of the GEMECD database structure, including taxonomies and guidelines to collect and report on earthquake-induced consequence data. Secondly, the paper presents a summary of the studies implemented for the 7 events, with particular focus on the Darfield (2010) and Christchurch (2011) earthquakes. Finally, examples of specific outcomes and potentials for NZ from using and processing GEMECD are presented, including: 1) the rationale for adopting the GEM taxonomy in NZ and any need for introducing NZ-specific attributes; 2) a complete overview of the building typological distribution in the Christchurch CBD prior to the Canterbury earthquakes and 3) some initial correlations between the level and extent of earthquake-induced physical damage to buildings, building safety/accessibility issues and the induced human casualties.

Research papers, The University of Auckland Library

The current seismic design practice for reinforced concrete (RC) walls has been drawn into question following the unsatisfactory performance of several RC wall buildings during the Canterbury earthquakes. An overview of current research being undertaken at the University of Auckland into the seismic behaviour of RC walls is presented. The main objectives of this research project are to understand the observed performance of RC walls in Christchurch, quantify the seismic loads on RC walls, and developed improved design procedures for RC walls that will assist in revisions to the New Zealand Concrete Structures Standard. A database summarising the performance of RC wall buildings in the Christchurch CBD was collated to identify damage modes and case-study buildings. A detailed investigation is underway to verify the seismic performance of lightly reinforced concrete walls and initial numerical modeling and small-scale tests are presented in addition to details of planned experimental tests of RC walls. Numerical modelling is being used to understand the potential influence that interactions between walls and other structural elements have on the seismic response of buildings and the loads generated on RC walls. The results from finite element analysis of a severely damaged RC wall in Christchurch highlighted the effect that the floor diaphragms have on the distribution of shear stains in the wall.

Research papers, The University of Auckland Library

Seismic retrofitting of unreinforced masonry buildings using posttensioning has been the topic of many recent experimental research projects. However, the performance of such retrofit designs in actual design level earthquakes has previously been poorly documented. In 1984 two stone masonry buildings within The Arts Centre of Christchurch received posttensioned seismic retrofits, which were subsequently subjected to design level seismic loads during the 2010/2011 Canterbury earthquake sequence. These 26 year old retrofits were part of a global scheme to strengthen and secure the historic building complex and were subject to considerable budgetary constraints. Given the limited resources available at the time of construction and the current degraded state of the steel posttension tendons, the posttensioned retrofits performed well in preventing major damage to the overall structure of the two buildings in the Canterbury earthquakes. When compared to other similar unretrofitted structures within The Arts Centre, it is demonstrated that the posttensioning significantly improved the in-plane and out-of-plane wall strength and the ability to limit residual wall displacements. The history of The Arts Centre buildings and the details of the Canterbury earthquakes is discussed, followed by examination of the performance of the posttension retrofits and the suitability of this technique for future retrofitting of other historic unreinforced masonry buildings. http://www.aees.org.au/downloads/conference-papers/2013-2/

Images, UC QuakeStudies

A photograph of a block of damaged shops on the corner of Gloucester Street and Woodham Road. The top of the façade has crumbled. The bricks have fallen to the ground and taken the awnings with them. Wire fencing has been placed around the buildings as a cordon. Signs on the fences indicated that the T Bakery and Red Chilli are open.

Images, UC QuakeStudies

One end of the Arts Centre photographed shortly after the 22 February 2011 earthquake. The gable of the building has crumbled and fallen to the ground, collapsing an awning. A large crack can be seen in the corner tower. Blue ties can be seen at the top of the tower, used to brace the structure after the 4 September 2010. This has probably limited the damage caused by the 22 February 2011 earthquake.

Images, UC QuakeStudies

Shoppers and tourists in the Re:Start mall. The photographer comments, "The new temporary city mall has been open in Christchurch now for a week. Buildings damaged in the earthquake have been demolished and replaced with cargo containers to create a new, temporary, Cashel Mall. I visited the mall yesterday and was quite impressed with what they have done. The cargo containers have been nicely converted, brightly painted and smartly branded to create some good looking stores".

Images, UC QuakeStudies

A photograph of the rubble of the Observatory tower in the South Quad of the Christchurch Arts Centre. The tower collapsed during the 22 February 2011 earthquake. A digger was used to clear the rubble away from the building. Scaffolding constructed around the tower has also collapsed and is amongst the rubble. In the background is the damaged tower with a tarpaulin draped over the top.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Observatory tower at the Christchurch Arts Centre. The top two storeys of the tower collapsed during the 22 February 2011 earthquake and the rubble spilled into the courtyard in front. A digger was used to clear the rubble away from the building. A tarpaulin has been draped over the top of the broken tower and the roof behind.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Observatory tower at the Christchurch Arts Centre. The top two storeys of the tower collapsed during the 22 February 2011 earthquake and the rubble spilled into the courtyard in front. A digger was used to clear the rubble away from the building. A tarpaulin has been draped over the top of the broken tower and the roof behind.

Images, UC QuakeStudies

A photograph of the rubble of the Observatory tower in the South Quad of the Christchurch Arts Centre. The tower collapsed during the 22 February 2011 earthquake and a digger was used to clear the rubble away from the building. Scaffolding constructed around the tower has also collapsed and is amongst the rubble. In the background is the damaged tower with a tarpaulin draped over the top.

Images, UC QuakeStudies

A photograph of the earthquake damage to a group of shops on Colombo Street near the intersection of Kilmore Street. Large sections of the top storeys of the buildings have collapsed. Most of the bricks and other rubble have been cleared from the footpath. USAR codes have been spray-painted on many of the shops' windows. The closest store has been demolished and the rubble has been cleared away.

Images, UC QuakeStudies

A photograph of the earthquake damage to Knox Church on the corner of Bealey Avenue and Victoria Street. The walls of the gables have crumbled, the bricks falling onto the footpath. Many have been cleared away and now sit in a pile on the road. Road cones, metal fences, and cordon tape have been placed around the building.

Images, UC QuakeStudies

A photograph looking north across Tuam Street to Poplar Lane. Bricks from earthquake-damaged buildings litter the lane. A car parked on the left side of the lane has been crushed by falling bricks. To the left of the photograph a pile of rubble from Plume is sitting on the road. Behind this are two mannequins, still hanging in the store.

Images, UC QuakeStudies

A photograph of several earthquake-damaged and partially-demolished buildings on Manchester Street near the intersection of Lichfield Street. To the right two emergency management personnel are taking photographs from the intersection. On the other side of the intersection there are several chairs, tables, and a couch under a red umbrella. Another member of an emergency management team is sitting on the couch.

Images, UC QuakeStudies

Shoppers and tourists in the Re:Start mall. The photographer comments, "The new temporary city mall has been open in Christchurch now for a week. Buildings damaged in the earthquake have been demolished and replaced with cargo containers to create a new, temporary, Cashel Mall. I visited the mall yesterday and was quite impressed with what they have done. The cargo containers have been nicely converted, brightly painted and smartly branded to create some good looking stores".

Images, UC QuakeStudies

Shoppers and tourists in the Re:Start mall. The photographer comments, "The new temporary city mall has been open in Christchurch now for a week. Buildings damaged in the earthquake have been demolished and replaced with cargo containers to create a new, temporary, Cashel Mall. I visited the mall yesterday and was quite impressed with what they have done. The cargo containers have been nicely converted, brightly painted and smartly branded to create some good looking stores".

Images, UC QuakeStudies

Shoppers and tourists in the Re:Start mall. The photographer comments, "The new temporary city mall has been open in Christchurch now for a week. Buildings damaged in the earthquake have been demolished and replaced with cargo containers to create a new, temporary, Cashel Mall. I visited the mall yesterday and was quite impressed with what they have done. The cargo containers have been nicely converted, brightly painted and smartly branded to create some good looking stores".

Images, UC QuakeStudies

Shoppers and tourists in the Re:Start mall. The photographer comments, "The new temporary city mall has been open in Christchurch now for a week. Buildings damaged in the earthquake have been demolished and replaced with cargo containers to create a new, temporary, Cashel Mall. I visited the mall yesterday and was quite impressed with what they have done. The cargo containers have been nicely converted, brightly painted and smartly branded to create some good looking stores".

Images, UC QuakeStudies

Shoppers and tourists in the Re:Start mall. The photographer comments, "The new temporary city mall has been open in Christchurch now for a week. Buildings damaged in the earthquake have been demolished and replaced with cargo containers to create a new, temporary, Cashel Mall. I visited the mall yesterday and was quite impressed with what they have done. The cargo containers have been nicely converted, brightly painted and smartly branded to create some good looking stores".

Images, UC QuakeStudies

Shoppers and tourists in the Re:Start mall. The photographer comments, "The new temporary city mall has been open in Christchurch now for a week. Buildings damaged in the earthquake have been demolished and replaced with cargo containers to create a new, temporary, Cashel Mall. I visited the mall yesterday and was quite impressed with what they have done. The cargo containers have been nicely converted, brightly painted and smartly branded to create some good looking stores".