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Dynamic response of post-tensioned timber frame buildings
Research papers, University of Canterbury Library
An extensive research program is on-going at the University of Canterbury, New Zealand to develop new technologies to permit the construction of multi-storey timber buildings in earthquake prone areas. The system combines engineered timber beams, columns and walls with ductile moment resisting connections using post-tensioned tendons and eventually energy dissipaters. The extensive experimental testing on post-tensioned timber building systems has proved a remarkable lateral response of the proposed solutions. A wide number of post-tensioned timber subassemblies, including beam-column connections, single or coupled walls and column-foundation connections, have been analysed in static or quasi-static tests. This contribution presents the results of the first dynamic tests carried out with a shake-table. Model frame buildings (3-storey and 5-storey) on one-quarter scale were tested on the shake-table to quantify the response of post-tensioned timber frames during real-time earthquake loading. Equivalent viscous damping values were computed for post-tensioned timber frames in order to properly predict their response using numerical models. The dynamic tests were then complemented with quasi-static push and pull tests performed to a 3-storey post-tensioned timber frame. Numerical models were included to compare empirical estimations versus dynamic and quasi-static experimental results. Different techniques to model the dynamic behaviour of post-tensioned timber frames were explored. A sensitivity analysis of alternative damping models and an examination of the influence of designer choices for the post-tensioning force and utilization of column armouring were made. The design procedure for post-tensioned timber frames was summarized and it was applied to two examples. Inter-storey drift, base shear and overturning moments were compared between numerical modelling and predicted/targeted design values.
Chch Cathedral should be rebuilt says visiting expert
Audio, Radio New Zealand
An international expert in earthquake recovery who's touring New Zealand says it's inconceivable to think that a building as magnificent as Christchurch Cathedral won't be rebuilt.
The Vault - Radio New Zealand and the Christchurch quake
Audio, Radio New Zealand
Radio New Zealand has had to abandon the Christchurch building that was our base and the home of Sound Archives - Nga Taonga Korero. In this edition of The Vault; Deborah Nation draws on recordings made on the day an earthquake finally evicted her and the other people there.
IMG_7298
Images, eqnz.chch.2010
Monavale, a publicly owned heritage building and gardens - can't see it surviving this one.
CTV survivor talks about the earthquake service
Audio, Radio New Zealand
It's been a year since Pip Ranby was rescued from the top floor of the five storey Canterbury Television building.
Outdoor recreation areas around Christchurch hit by quake
Audio, Radio New Zealand
While buildings and businesses bore the brunt of the Canterbury earthquake, some popular outdoor recreation places have also been hit.
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:50:59
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsen Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it become unsafe during Wednesday's earthquake".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:51:00
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsen Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it become unsafe during Wednesday's earthquake".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:51:00
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsen Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it become unsafe during Wednesday's earthquake".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:38:41
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsens Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it become unsafe at Wednesday's earthquake".
Christchurch Press Image: Dean Kozanic 2010:09:10 (02)
Images, UC QuakeStudies
Photograph captioned by Fairfax, "Aftermath of the earthquake in Christchurch where the cleanup has begun. Historic buildings around Christchurch received varying degrees of damage. The Provincial Chambers on Durham Street is scaffolded".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:37:52
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsens Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it became unsafe in Wednesday's earthquake".
Christchurch Press Image: Dean Kozanic 2010:09:10 (03)
Images, UC QuakeStudies
Photograph captioned by Fairfax, "Aftermath of the earthquake in Christchurch where the cleanup has begun. Historic buildings around Christchurch received varying degrees of damage. The Provincial Chambers on Durham Street is scaffolded".
Christchurch Mail Image: Luke Thomas 2010:09:30 14:30:12
Images, UC QuakeStudies
Photograph captioned by Fairfax, "Safety first: management of the Science Alive building have installed a wooden brace to prevent any bricks from falling. The clock still shows the time of the earthquake".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:51:01
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsen Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it become unsafe during Wednesday's earthquake".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:37:52
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsens Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it became unsafe in Wednesday's earthquake".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:53:46
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsens Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it become unsafe at Wednesday's earthquake".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:38:17
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsens Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it become unsafe at Wednesday's earthquake".
Christchurch Press Image: Richard Cosgrove 2010:09:08 13:51:00
Images, UC QuakeStudies
Photograph captioned by Fairfax, "The Jacobsen Tile building (formerly Maddison's Pub) on the corner of Moorhouse Avenue and Montreal Street has its cornice work demolished after it become unsafe during Wednesday's earthquake".
Christchurch's Divine Cakes rebuilds post quake
Audio, Radio New Zealand
Divine Cakes in Christchurch has had a tough past five years building up again after the 2011 earthquakes.
Quake Damaged churches
Audio, Radio New Zealand
We are taking a look at some of Christchurch's icon and heritage buildings lost, or at least badly damaged by last Tuesdays earthquake.
The Vault - Earthquake at Radio New Zealand House
Audio, Radio New Zealand
Deborah Nation recalls how it was in the Sound Archives and Radio New Zealand offices in Christchurch on the day of the February earthquake. The building on the corner of Durham and Chester Street West has been condemned. Please be aware that the first sounds of this report may be upsetting, especially to listenners who experienced the earthquake.
Shoes: Mizuno
Images, Canterbury Museum
One pair of Mizuno track and field shoes, size UK 9 1/2, in blue, yellow and grey. Amongst the items left at the site of the Canterbury Television (CTV) building, which collapsed during the 22 February 2011 earthquake, was this pair of shoes. They may have been left in remembrance of someone who died in the building or perhaps for someone to us...
Maori Inspired Graffiti in the Ozone
Images, UC QuakeStudies
Graffiti on a damaged building. The photographer comments, "After some of the walls were demolished this graffiti was exposed. The next day this wall was gone as well".
Sea of Fluro
Images, eqnz.chch.2010
A crane topples over on Victoria Street while taking glass up to some windows. No one was hurt and the glass never broke. Victoria Street was closed from 7:30am to later in the evening. This all happen on the Knox Plaza building site. Christchurch October 13, 2014 New Zealand.
No Go
Images, eqnz.chch.2010
A crane topples over on Victoria Street while taking glass up to some windows. No one was hurt and the glass never broke. Victoria Street was closed from 7:30am to later in the evening. This all happen on the Knox Plaza building site. Christchurch October 13, 2014 New Zealand.
Christchurch Press Image: Dean Kozanic 2010:09:10 (01)
Images, UC QuakeStudies
Photograph captioned by Fairfax, "Aftermath of the earthquake in Christchurch where the cleanup has begun. Historic buildings around Christchurch received varying degrees of damage. Builders work on the Repertory Theatre in Kilmore Street".
Christchurch Press 2 March 2011: Section A, Page 3
Articles, UC QuakeStudies
Page 3 of Section A of the Christchurch Press, published on Wednesday 2 March 2011.
Christchurch Press 9 August 2011: Section A, Page 5
Articles, UC QuakeStudies
Page 5 of Section A of the Christchurch Press, published on Tuesday 9 August 2011.
Christchurch Press 22 February 2012: One Year On: In Memoriam Special Feat…
Articles, UC QuakeStudies
Page 13 of a One Year On: In Memoriam special feature in the Christchurch Press, published on Wednesday 22 February 2012.