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Koen Broekema's Photograph 124
Images, UC QuakeStudies
The front of Christ Church Cathedral showing its broken tower. Bracing has been placed on the front wall to limit further damage. Security fences have been placed around the cathedral to restrict access.
Koen Broekema's Photograph 057
Images, UC QuakeStudies
The front of Christ Church Cathedral. The upper part of the front wall has crumbled leaving the inside space exposed. Steel bracing has been placed against the front wall to limit further damage.
Photograph by Jocelyn Kinghorn 521
Images, UC QuakeStudies
A view down Worcester Boulevard. Steel bracing against Our City O-Tautahi can be seen. The Cathedral can be seen at the end of the street and the Clarendon Tower on the right.
Photograph by Jocelyn Kinghorn 641
Images, UC QuakeStudies
Detail of wooden bracing supporting a two-storey building on the corner of Barbadoes and Worcester Streets. The house has been fenced off and on the walls are the words "Do not demolish".
Experimental studies on in-plane performance of plasterboard sheathed ceil…
Research papers, University of Canterbury Library
The ultimate goal of this study is to develop a model representing the in-plane behaviour of plasterboard ceiling diaphragms, as part of the efforts towards performance-based seismic engineering of low-rise light timber-framed (LTF) residential buildings in New Zealand (NZ). LTF residential buildings in NZ are constructed according to a prescriptive standard – NZS 3604 Timberframed buildings [1]. With regards to seismic resisting systems, LTF buildings constructed to NZS3604 often have irregular bracing arrangements within a floor plane. A damage survey of LTF buildings after the Canterbury earthquake revealed that structural irregularity (irregular bracing arrangement within a plane) significantly exacerbated the earthquake damage to LTF buildings. When a building has irregular bracing arrangements, the building will have not only translational deflections but also a torsional response in earthquakes. How effectively the induced torsion can be resolved depends on the stiffness of the floors/roof diaphragms. Ceiling and floor diaphragms in LTF buildings in NZ have different construction details from the rest of the world and there appears to be no information available on timber diaphragms typical of NZ practice. This paper presents experimental studies undertaken on plasterboard ceiling diaphragms as typical of NZ residential practice. Based on the test results, a mathematical model simulating the in-plane stiffness of plasterboard ceiling diaphragms was developed, and the developed model has a similar format to that of plasterboard bracing wall elements presented in an accompany paper by Liu [2]. With these two models, three-dimensional non-linear push-over studies of LTF buildings can be undertaken to calculate seismic performance of irregular LTF buildings.
Koen Broekema's Photograph 087
Images, UC QuakeStudies
A close up of the damaged stonework of Christ Church Cathedral. The upper part of the front wall has crumbled leaving the inside space exposed. Steel bracing has been placed against the wall to limit further damage.
Koen Broekema's Photograph 036
Images, UC QuakeStudies
A close up of the front of Christ Church Cathedral. The upper part of the front wall has crumbled leaving the inside space exposed. Steel bracing has been placed against the front wall to limit further damage.
Koen Broekema's Photograph 027
Images, UC QuakeStudies
A close up of the damaged stonework of Christ Church Cathedral. The upper part of the front wall has crumbled leaving the inside space exposed. Steel bracing has been placed against the wall to limit further damage.
Steve Lawrence Photograph 34
Images, UC QuakeStudies
The damaged cathedral is supported with steel bracing and cordoned off with fencing and barriers. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.
Photograph by Jocelyn Kinghorn 1728
Images, UC QuakeStudies
The front side of the Cathedral with the rose window removed and bracing supporting the wall. The broken tower can be seen to the left and fencing placed around the outside of the building.
Photograph by Jocelyn Kinghorn 2580
Images, UC QuakeStudies
Looking down Worcester Street with Our City-O-Tautahi with bracing on its front facade on the left, behind it is Rydges, the Grant Thornton Building in the middle back, and the Claredon Towers on the right.
Koen Broekema's Photograph 072
Images, UC QuakeStudies
A close up of the front of Christ Church Cathedral. The upper part of the front wall has crumbled leaving the inside space exposed. Bracing has been placed against the front wall to limit further damage.
Koen Broekema's Photograph 084
Images, UC QuakeStudies
A close up of the front of Christ Church Cathedral. The upper part of the front wall has crumbled leaving the inside space exposed. Steel bracing has been placed against the wall to limit further damage.
Steve Lawrence Photograph 35
Images, UC QuakeStudies
The damaged cathedral is supported with steel bracing and cordoned off with fencing and barriers. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.
Russ Botting Photograph 6
Images, UC QuakeStudies
A photograph of earthquake damage to the Crown Masonic Lodge on Wordsworth Street, also known as the Freemasons Centre. The entranceway is supported with wooden bracing, and part of the brick wall beside the entrance has collapsed.
Steve Lawrence Photograph 30
Images, UC QuakeStudies
The damaged cathedral is supported with steel bracing and cordoned off with fencing and barriers. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.
Steve Lawrence Photograph 31
Images, UC QuakeStudies
The damaged cathedral is supported with steel bracing and cordoned off with fencing and barriers. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.
Steve Lawrence Photograph 28
Images, UC QuakeStudies
The damaged cathedral is supported with steel bracing and cordoned off with fencing and barriers. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.
Steve Lawrence Photograph 29
Images, UC QuakeStudies
The damaged cathedral is supported with steel bracing and cordoned off with fencing and barriers. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.
Photograph by Jocelyn Kinghorn 087
Images, UC QuakeStudies
Damage to St John the Baptist Church in Latimer Square, where stone blocks have fallen and a steel bracing has been put in front to prevent any future damage. Photographed through the cordon fence.
Photograph of the former Sydenham Post Office, 340 Colombo Street (5)
Images, UC QuakeStudies
A photograph of workers in a cherry picking installing steel bracing on the Colombo Street face of the former Sydenham Post Office. Wire fencing has been placed around the building as a cordon.
Bridge Reinforcements in Christchurch
Images, UC QuakeStudies
Detail of steel bracing supporting the Colombo Street overpass. The photographer comments, "After the earthquake in Christchurch the Colombo St overpass got damaged and they used reinforcing steel beams to hold it up".
Photograph of the former Sydenham Post Office, 340 Colombo Street (1)
Images, UC QuakeStudies
A photograph of workers in a cherry picking installing steel bracing on the Colombo Street face of the former Sydenham Post Office. A large crack can be seen in the side of the building.
Koen Broekema's Photograph 104
Images, UC QuakeStudies
The front of Christ Church Cathedral. The upper part of the front wall has crumbled leaving the inside space exposed. Steel bracing has been placed against the wall to limit further damage. The Citizens' Memorial statue stands to the left.
Koen Broekema's Photograph 132
Images, UC QuakeStudies
The front of Christ Church Cathedral. The upper part of the front wall has crumbled leaving the inside space exposed. Steel bracing has been placed against the front wall to limit further damage. The Citizens' Memorial statue stands to the left.
Russ Botting Photograph 7
Images, UC QuakeStudies
A photograph of earthquake damage to the Crown Masonic Lodge on Wordsworth Street, also known as the Freemasons Centre. Sections of the brick wall at the front of the building have collapsed. The entranceway is supported with wooden bracing.
Russ Botting Photograph 8
Images, UC QuakeStudies
A photograph of earthquake damage to the Crown Masonic Lodge on Wordsworth Street, also known as the Freemasons Centre. Sections of the brick wall at the front of the building have collapsed. The entranceway is supported with wooden bracing.
Koen Broekema's Photograph 055
Images, UC QuakeStudies
The front of Christ Church Cathedral showing its broken tower. Bracing has been placed on the front wall to limit further damage. Security fences have been placed around the cathedral to restrict access. The Wizard of Christchurch stands to the right.
Steve Lawrence Photograph 33
Images, UC QuakeStudies
The Citizens' Memorial statue beside the cathedral, with bracing around the neck and waist of the angel to prevent further damage. Taken on a day when a walkway was opened up between Re:Start Mall and Cathedral Square to allow temporary public access.
Photograph by Jocelyn Kinghorn 163
Images, UC QuakeStudies
The wall of the Carlton Hotel has crumbled, exposing the interior of the upstair rooms. Scaffolding and steel bracing has been put up on the side, and a pile of building rubble can be seen on the footpath.