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Images for earthquake repairs; more images...

Images, UC QuakeStudies

A photograph of earthquake repairs underway in the quad of Christ's College on Rolleston Avenue. A sign on the gate read, "Quake repairs, keep out". Tape reading, "Danger keep out" has been draped across both gates . In the background is a crane, several workers in high-visibility clothing, and building supplies.

Images, eqnz.chch.2010

Repairing the bush telegraph File Ref: CCL-2011-03-17-St Albans-IMG_0380 From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Repairing the bush telegraph File Ref: CCL-2011-03-17-St Albans-IMG_0379 From the collection of Christchurch City Libraries.

Images, UC QuakeStudies

The damaged Provincial Council Legislative Chamber on Durham Street in the aftermath of the 22 February earthquake. The building's roof and walls have collapsed, as has the scaffolding which was erected to repair it after the 4 September earthquake.

Images, UC QuakeStudies

The damaged Provincial Council Legislative Chamber on Durham Street in the aftermath of the 22 February 2011 earthquake. The building's roof and walls have collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake.

Images, UC QuakeStudies

The damaged Provincial Council Legislative Chamber on Durham Street in the aftermath of the 22 February 2011 earthquake. The building's roof and walls have collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake.

Images, eqnz.chch.2010

A little spot of coffee and cheerfulness plus a man up the mast repairing the "bush telegraph" File Ref: CCL-2011-03-17-St Albans-IMG_0387 From the collection of Christchurch City Libraries.

Images, UC QuakeStudies

A photograph of the damaged Provincial Council Chambers on Durham Street. The building's roof and walls have collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake.

Images, UC QuakeStudies

A fire engine driving past the damaged Provincial Council Legislative Chamber on Durham Street. The building's roof and walls have collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake.

Images, UC QuakeStudies

The damaged Cranmer Centre on the corner of Montreal and Armagh Streets shortly after the 22 February 2011 earthquake. The east wall of the building has crumbled onto the street and a man in a hard hat and high-visibility vest is directing people around it. There is scaffolding on the south side of the building from repair works after the 4 September 2010 earthquake. The gable in the background has also collapsed.

Images, UC QuakeStudies

A view looking south down Durham Street during the aftermath of the 22 February 2011 earthquake. On the left are the ruins of the historic stone Provincial Council Legislative Chamber. The building's roof and walls have already collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake. An aftershock has caused masonry to dislodge from the building, sending dust into the air.

Images, UC QuakeStudies

A view looking south down Durham Street during the aftermath of the 22 February 2011 earthquake. On the left are the ruins of the historic stone Provincial Council Legislative Chamber. The building's roof and walls have already collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake. An aftershock has caused masonry to dislodge from the building, sending dust into the air.

Images, UC QuakeStudies

The ruins of the historic Durham Street Methodist Church in the aftermath of the 22 February 2011 earthquake. The only parts of the building still upright are those supported by steel braces placed there after the 4 September 2010 earthquake to strengthen the building as it awaited repairs. Rubble has spilled out onto the street, knocking over the safety fences that were also erected after September. Silt from liquefaction has covered the road around the church.

Images, UC QuakeStudies

The ruins of the historic Durham Street Methodist Church in the aftermath of the 22 February 2011 earthquake. The only parts of the building still upright are those supported by steel braces placed there after the 4 September 2010 earthquake to strengthen the building as it awaited repairs. Rubble has spilled out onto the street, knocking over the safety fences that were also erected after September. Silt from liquefaction has covered the road around the church.

Images, UC QuakeStudies

The ruins of the historic Durham Street Methodist Church in the aftermath of the 22 February 2011 earthquake. The only parts of the building still upright are those supported by steel braces placed there after the 4 September 2010 earthquake to strengthen the building as it awaited repairs. Rubble has spilled out onto the street, knocking over the safety fences that were also erected after September. Silt from liquefaction has covered the road around the church.

Images, UC QuakeStudies

Civil Defence staff walking down Durham Street, a fire engine behind them. Beside them, the damaged Provincial Council Legislative Chamber can be seen. The building's roof and walls have collapsed, as has the scaffolding that had been erected to repair it after the 4 September 2010 earthquake.

Images, UC QuakeStudies

A view looking south down Durham Street. Two fire engines are driving north, and a pair of construction workers are walking up the road. Behind them is the damaged Provincial Council Legislative Chambers. The building's walls and roof have collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake.

Research papers, The University of Auckland Library

The Christchurch region of New Zealand experienced a series of major earthquakes and aftershocks between September 2010 and June 2011 which caused severe damage to the city’s infrastructure. The performance of tilt-up precast concrete buildings was investigated and initial observations are presented here. In general, tilt-up buildings performed well during all three major earthquakes, with mostly only minor, repairable damage occurring. For the in-plane loading direction, both loadbearing and cladding panels behaved exceptionally well, with no significant damage or failure observed in panels and their connections. A limited number of connection failures occurred due to large out-of-plane panel inertia forces. In several buildings, the connections between the panel and the internal structural frame appeared to be the weakest link, lacking in both strength and ductility. This weakness in the out-of-plane load path should be prevented in future designs.