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BeckerFraserPhotos April 2011 photograph 612
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The Press building in Cathedral Square. The top floor of the building collapsed during the February 22 earthquake, the debris still on the pavement in front".
Photograph by Jocelyn Kinghorn 334
Images, UC QuakeStudies
Damage to Metro Floor, where a section under the roof has been covered with a tarpaulin to protect it from the rain. Cordon fencing, plastic road barriers and road cones can be seen along the footpath and street.
BeckerFraserPhotos September 2011 photograph 719
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "New reconstruction where it is planned to add a new ground floor to this basement in Lichfield Street and then build the building".
Photograph by Neil Macbeth 175
Images, UC QuakeStudies
Members of the public walking up Colombo Street in the aftermath of the 22 February earthquake. Behind them emergency personnel are using a crane to check the floors of the Forsyth Barr building for trapped people.
BeckerFraserPhotos October 2011 photograph 221
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "25 Seabreeze Close, Bexley. View through the window shows the crack in the floor slab, and a pile of silt in the corner of the room".
WEMO ERT Set 1 - March 2011 - Photograph 166
Images, UC QuakeStudies
A photograph of a member of an emergency management team in a room inside an earthquake-damaged house. The chimney and fireplace in the room have collapsed and the bricks have spilled across the floor.
BeckerFraserPhotos February 2011 photograph 476
Images, UC QuakeStudies
A view of the interior of the Durham Street Methodist Church hall. The floor has been coated with plaster from the walls and ceiling, and items of furniture have been stacked up around the walls.
Central City Tour, 4 April 2011 - Photograph 03
Images, UC QuakeStudies
Damage to a house in Richmond. Brick cladding is badly cracked and buckled, and some bricks have fallen. There is a large gap between the floor and the foundations. The photographer comments, "Brick walls still clinging on".
Central City Tour, 4 April 2011 - Photograph 04
Images, UC QuakeStudies
Damage to a house in Richmond. Brick cladding is badly cracked and buckled, and some bricks have fallen. There is a large gap between the floor and the foundations. The photographer comments, "Brick walls still clinging on".
BeckerFraserPhotos September 2011 photograph 608
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Looking down Tattersalls Lane from Hereford Street with a concrete truck and pump delivering concrete to the 1st floor of the Hotel Grand Chancellor".
Grand Chancellor Lean
Images, eqnz.chch.2010
Hotel Grand Chancellor on verge of collapse but still standing after the 6.3 magnitude quake hit Christchurch on 22 February 2011 because of concrete being poured into the lower floors.
Photograph by Neil Macbeth 181
Images, UC QuakeStudies
A team of Fire Service and Search and Rescue personnel using a crane to check the Forsyth Barr building for people trapped by the 22 February 2011 earthquake. A sign reading, "Help" has been stuck to a window in the floor below.
WEMO ERT Set 3 - February 2011 - Photograph 037
Images, UC QuakeStudies
A photograph of members of the Wellington Emergency Management Office Emergency Response Team inside a building in the Christchurch central city. Silt and water from liquefaction has covered large sections of the concrete floor.
BeckerFraserPhotos February 2011 photograph 466
Images, UC QuakeStudies
A stack of letter tiles resting on a bench inside the Durham Street Methodist Church. The bench and the floor around it has been covered with dust and chips of plaster that have come off the building's walls.
Bike Ride in the East Side - Photograph 44
Images, UC QuakeStudies
Damage to a house in Richmond. The foundation is all that remains of one room, and the exposed interior wall has been covered with builders' paper for protection. The photographer comments, "Revisiting our abandoned house. Back door and the floor of the sunroom".
Central City Tour, 4 April 2011 - Photograph 01
Images, UC QuakeStudies
Damage to a house in Richmond. Large gaps are visible between the floor and the foundation, and between the foundation and the patio. The photographer comments, "A bike ride around the CBD. Our house - patio is heading west - or the sunroom is heading east".
Photograph by Neil Macbeth 220
Images, UC QuakeStudies
Emergency personnel helping an injured man who was trapped in the collapsed Pyne Gould Corporation building. He can be seen descending down the shaft of a crane. This photograph shows how the building's different floors have "pancaked", collapsing on to each other.
BeckerFraserPhotos February 2011 photograph 443
Images, UC QuakeStudies
Plaster on the floor of the Durham Street Methodist Church that has chipped away from the walls and ceiling of the building. In the background a window that has been braced and weather proofed with timber can be seen.
WEMO ERT Set 1 - March 2011 - Photograph 150
Images, UC QuakeStudies
A photograph of a room in the PricewaterhouseCoopers Building on Armagh Street. Sections of the concrete beam above the window have crumbled and the pieces of concrete have fallen onto the desk and floor below.
US Embassy Photograph 17
Images, UC QuakeStudies
Members of the USAID Disaster Assistance Response Team (DART) and New Zealand Urban Search and Rescue breaking through the floor of a building which was severely damaged during the 22 February 2011 earthquake.
US Embassy Photograph 19
Images, UC QuakeStudies
Members of the USAID Disaster Assistance Response Team (DART) and New Zealand Urban Search and Rescue breaking through the floor of a building which was severely damaged during the 22 February 2011 earthquake.
US Embassy Photograph 18
Images, UC QuakeStudies
Members of the USAID Disaster Assistance Response Team (DART) and the New Zealand Urban Search and Rescue, breaking through the floor of a building which was severely damaged during the 22 February 2011 earthquake.
Christchurch Press Image: John Kirk-Anderson, 2011:02:22 12:51:44
Images, UC QuakeStudies
Photograph captioned by Fairfax, "Al Nisbet, cartoonist at The Press, emerges from the rubble that collapsed over the desk he took shelter under as the earthquake hit. The debris is from the floor above that pancaked, killing one Press employee".
Checkpoint Top Stories for 25 February 2011
Audio, Radio New Zealand
Earthquake bus survivor, Mike Ardagh - Christchurch Hospital, Reporter Erina O'Donohue live from Christchurch, Where to obtain water, Murray McCully thanks international community, Cowles Stadium welfare centre closed, Man escapes from 12th floor of Forsyth Barr building, Aussie medics set up field hospital, Schools need significant rebuilding and Fourteen supermarkets closed in Christchurch.
BeckerFraserPhotos April 2011 photograph 659
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The ground floor of the IRD building on the corner of Cashel and Madras Streets, taken through the Madras Street window. The book market inside the building is almost undisturbed while next door, the CTV building collapsed.
WEMO ERT Set 1 - February 2011 - Photograph 76
Images, UC QuakeStudies
A photograph of the earthquake damage to the Art Gallery Apartments on Gloucester Street. Both windows on the second floor of the building are broken. USAR codes have been spray painted on one of the bottom-storey windows.
WEMO ERT Set 3 - February 2011 - Photograph 144
Images, UC QuakeStudies
A photograph of emergency management personnel taking photographs of a dip in the floor of Grenadier House on Madras Street. The front windows have smashed, the glass scattering over the foyer and footpath outside. The wall next to the elevator is buckled.
WEMO ERT Set 3 - February 2011 - Photograph 227
Images, UC QuakeStudies
A photograph of mannequins in the window of Munn's the Man store on Armagh Street. Bricks, chairs, and other rubble from the floor above have collapsed on top of the mannequins, smashing the window in front.
WEMO ERT Set 1 - March 2011 - Photograph 101
Images, UC QuakeStudies
A photograph of the earthquake damage to a row of buildings on Colombo Street. The front of the buildings has collapsed, exposing the inside of both floors. The rubble from the collapsed walls has been cleared from the street in front.
Seismic Design of Post-Tensioned Timber Frame and Wall Buildings
Research papers, University of Canterbury Library
Currently there is a worldwide renaissance in timber building design. At the University of Canterbury, new structural systems for commercial multistorey timber buildings have been under development since 2005. These systems incorporate large timber sections connected by high strength post-tensioning tendons, and timber-concrete composite floor systems, and aim to compete with existing structural systems in terms of cost, constructability, operational and seismic performance. The development of post-tensioned timber systems has created a need for improved lateral force design approaches for timber buildings. Current code provisions for seismic design are based on the strength of the structure, and do not adequately account for its deformation. Because timber buildings are often governed by deflection, rather than strength, this can lead to the exceedence of design displacement limitations imposed by New Zealand codes. Therefore, accurate modeling approaches which define both the strength and deformation of post-tensioned timber buildings are required. Furthermore, experimental testing is required to verify the accuracy of these models. This thesis focuses on the development and experimental verification of modeling approaches for the lateral force design of post-tensioned timber frame and wall buildings. The experimentation consisted of uni-direcitonal and bi-directional quasi-static earthquake simulation on a two-thirds scale, two-storey post-tensioned timber frame and wall building with timber-concrete composite floors. The building was subjected to lateral drifts of up to 3% and demonstrated excellent seismic performance, exhibiting little damage. The building was instrumented and analyzed, providing data for the calibration of analytical and numerical models. Analytical and numerical models were developed for frame, wall and floor systems that account for significant deformation components. The models predicted the strength of the structural systems for a given design performance level. The static responses predicted by the models were compared with both experimental data and finite element models to evaluate their accuracy. The frame, wall and floor models were then incorporated into an existing lateral force design procedure known as displacement-based design and used to design several frame and wall structural systems. Predictions of key engineering demand parameters, such as displacement, drift, interstorey shear, interstorey moment and floor accelerations, were compared with the results of dynamic time-history analysis. It was concluded that the numerical and analytical models, presented in this thesis, are a sound basis for determining the lateral response of post-tensioned timber buildings. However, future research is required to further verify and improve these prediction models.