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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 members of the Wellington Emergency Management Office walking down Lichfield Street towards the intersection of Madras Street. Buildings on either side of the team have been damaged by the earthquake and there are piles of rubble on the street in front of them.

Images, UC QuakeStudies

A photograph of members of the Wellington Emergency Management Office Emergency Response Team standing on the corner of Lichfield and Manchester Streets. In the background an excavator has been parked on the street. In the background is a large pile of rubble from several earthquake-damaged buildings.

Images, UC QuakeStudies

A photograph of members of the Wellington Emergency Management Office Emergency Response Team walking down Lichfield Street towards the intersection of Manchester Street. Buildings on either side of the team have been damaged by the earthquake. Plastic and wire fences line the street to the right.

Images, UC QuakeStudies

A photograph of members of the Wellington Emergency Management Office Emergency Response Team and the Red Cross, standing on the corner of Lichfield and Manchester Street. In the background an excavator is parked on the road. Behind the excavator is a block of earthquake-damaged buildings.

Images, UC QuakeStudies

A photograph of members of the Wellington Emergency Management Office walking down Lichfield Street towards the intersection of Madras Street. Buildings on either side of the street have been damaged by the earthquake. Plastic fences have been places around piles of rubble on the street as cordons.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Avonmore House on the corner of Hereford Street and Latimer Square. Large cracks have formed in the building, causing sections of the masonry to crumble. The windows on the Hereford Street side of the building have bent out of shape and many of the glass panes have shattered. USAR codes have been spray painted on the column next to the door. In the distance wire fencing has been placed across the street as a cordon.

Research papers, University of Canterbury Library

Many buildings with relatively low damage from the 2010-2011 Canterbury were deemed uneconomic to repair and were replaced [1,2]. Factors that affected commercial building owners’ decisions to replace rather than repair, included capital availability, uncertainty with regards to regional recovery, local market conditions and ability to generate cash flow, and repair delays due to limited property access (cordon). This poster provides a framework for modeling decision-making in a case where repair is feasible but replacement might offer greater economic value – a situation not currently modeled in engineering risk analysis.

Images, UC QuakeStudies

A photograph of the intersection of High, Lichfield, and Manchester Streets, taken from the corner of High and Lichfield Streets. Emergency management personnel are sitting and standing in front of wire fences which are blocking off the intersection. In the background several excavators are clearing rubble from earthquake-damaged buildings.

Images, UC QuakeStudies

A sign on a tent set up in the Arts car park at the University of Canterbury after the 22 February 2011 earthquake. The tents were used as temporary lecture rooms while the buildings were being checked for damage. The sign reads, "Clyde 4, ANTH 102 in E338 Drawing Room Mon 11Am, 155 Seat".

Images, UC QuakeStudies

A photograph of the earthquake damage to the Canterbury Provincial Chambers on Durham Street. The top of one of the chambers has crumbled and the masonry has fallen onto the footpath. Scaffolding which was erected after the 4 September 2010 earthquake has also fallen. Wire fences have been placed around the building as a cordon.

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, and the bricks have fallen onto the footpath. Road cones, metal fences, and cordon tape have been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of an earthquake-damaged house on Gloucester Street. The bottom storey of the house has shifted and is now on a noticeable lean. USAR codes have been spray-painted on the front of the building and a red sticker has been placed on one of the windows.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Canterbury Provincial Chambers on Durham Street. The top of one of the chambers has crumbled and the masonry has fallen onto the footpath. Scaffolding which was erected after the 4 September 2010 earthquake has also fallen. Wire fences have been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to a building on the corner of Hereford and Madras Streets. Sections of the walls have crumbled, the bricks spilling onto the footpath below. The frame of a window has fallen onto the scaffolding, and many of the glass windows have smashed.

Images, UC QuakeStudies

A photograph of the earthquake damage to Asko Designs on Victoria Street. The brick wall on the right side and part of the front façade have crumbled. Bricks and other rubble have fallen onto the footpath below. Wire fences and police tape have been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "Avonside Girls High School sign". The sign reads, "This site is closed but the school is open. Avonside Girls High School has been temporarily relocated to Burnside High School, 151 Greers Road, Burnside 8053. Please do not enter this site - earthquake-damaged buildings".

Images, eqnz.chch.2010

Working at getting things out of the Victoria Square before it is demolished. www.stuff.co.nz/the-press/news/christchurch-earthquake-20... What I found on my walk around the city January 15, 2014 Ch...

Images, UC QuakeStudies

A photograph of an excavator clearing the rubble from earthquake-damaged buildings on Lichfield Street. The rubble has been gathered from the street and piled up beside the Majestic Theatre. In the foreground a member of the Wellington Emergency Management Office Emergency Response Team is crossing the street.

Images, UC QuakeStudies

A photograph of a member of the Wellington Emergency Management Office Emergency Response Team walking through the intersection of Manchester and Gloucester Streets. In the background, Manchester Street has been cordoned off with wire fences and is littered with rubble. Many of the buildings in view are severely damaged.

Images, UC QuakeStudies

A photograph looking north up an alleyway on Tuam Street. The alleyway leads to Sol Square. There is a road cone in the middle of the alleyway. The message 'keep out' has been spray-painted on the ground on each side of the cone. In the distance there are bricks from several earthquake-damaged buildings in the alleyway.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Cranmer Courts on the corner of Montreal and Kilmore Streets. The top of the closest gable has broken and is now covered in a tarpaulin. In the distance, a chimney has also been removed. Wire fencing and road cones have been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Chinese Methodist Church on Papanui Road. The bricks at the top of the tower have crumbled, and the wooden bracing is hanging half off the building. The spire of the tower can be seen to the left where it was moved to following the 4 September 2010 earthquake.

Images, UC QuakeStudies

A photograph of members of the Wellington Emergency Management Office Emergency Response Team and the Red Cross working on High and Manchester Streets. On both sides of the street there are piles of rubble from the earthquake-damaged buildings. Several excavators have been parked in a line along the street.

Images, UC QuakeStudies

A photograph of the site of a demolished house on the corner of Springfield Road and Bealey Avenue. "No go" has been spray-painted on the earthquake-damaged fence. Wire fencing and police tape has been placed across the entrance as a cordon. In the background, rubble from the demolished building can be seen.

Images, UC QuakeStudies

A photograph of Anderson and Hill Sports Power on the corner of St Asaph and Colombo Streets. Wire fences have been placed across the street as a cordon. In the background, rubble from earthquake-damaged buildings and crushed cars line the left side of the road. There is also foliage from a fallen tree.

Images, UC QuakeStudies

A photograph of the earthquake damage to The Burrito Company on Armagh Street. The front window has smashed, the glass spilling onto the floor and footpath outside. USAR codes have been spray-painted on the door and window to the side. A red sticker on the door indicates that the building is unsafe to enter.

Images, UC QuakeStudies

A photograph of the earthquake damage to The Burrito Company on Armagh Street. The front window has smashed, the glass spilling onto the floor and footpath outside. USAR codes have been spray-painted on the door and window to the side. A red sticker on the door indicates that the building is unsafe to enter.

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.