Warped railings on the damaged Dallington bridge.
A photograph of the damage to the teeth of a gear from the worm gear drive of the Townsend Telescope. The gear was damaged during the 22 February 2011 earthquake.
A photograph of the damage to the teeth of a gear from the worm gear drive of the Townsend Telescope. The gear was damaged during the 22 February 2011 earthquake.
The 2010-2011 Christchurch earthquakes generated damage in several Reinforced Concrete (RC) buildings, which had RC walls as the principal resistant element against earthquake demand. Despite the agreement between structural engineers and researchers in an overall successfully performance there was a lack of knowledge about the behaviour of the damaged structures, and even deeper about a repaired structure, which triggers arguments between different parties that remains up to these days. Then, it is necessary to understand the capacity of the buildings after the earthquake and see how simple repairs techniques improve the building performance. This study will assess the residual capacity of ductile slender RC walls according to current standards in New Zealand, NZS 3101.1 2006 A3. First, a Repaired RC walls Database is created trying to gather previous studies and to evaluate them with existing international guidelines. Then, an archetype building is designed, and the wall is extracted and scaled. Four half-scale walls were designed and will be constructed and tested at the Structures Testing Laboratory at The University of Auckland. The overall dimensions are 3 [m] height, 2 [m] length and 0.175 [m] thick. All four walls will be identical, with differences in the loading protocol and the presence or absence of a repair technique. Results are going to be useful to assess the residual capacity of a damaged wall compare to the original behaviour and also the repaired capacity of walls with simpler repair techniques. The expected behaviour is focussed on big changes in stiffness, more evident than in previously tested RC beams found in the literature.
A paper which outlines SCIRT's approach to asset assessment, design and repair of damaged retaining walls, and presents a case study of a retaining wall rebuild, on Cunningham Terrace, Lyttelton.
Aftermath of September 4th Earthquake in Canterbury. Shops on Colombo Street in Christchurch. The initial 7.1 quake has been followed by around 1590 aftershocks recorded to date - causing further damage to already weakened structures.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Note: these photos were taken on a cellphone; mind the quality.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Note: these photos were taken on a cellphone; mind the quality.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Churchill tavern. Note: these photos were taken on a cellphone; mind the quality.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Churchill Tavern. Note: these photos were taken on a cellphone; mind the quality.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Note: these photos were taken on a cellphone; mind the quality.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Note: these photos were taken on a cellphone; mind the quality.
On 4 September 2010, a 7.1 magnitude earthquake struck near Darfield, 40 kilometres west of Christchurch, New Zealand. The quake caused significant damage to land and buildings nearby, with damage extending to Christchurch city. On 22 February 2011, a 6.3 magnitude earthquake struck Christchurch, causing extensive and significant damage across the city and with the loss of 185 lives. Years on from these events, occasional large aftershocks continue to shake the region. Two main entomological collections were situated within close proximity to the 2010/11 Canterbury earthquakes. The Lincoln University Entomology Research Collection, which is housed on the 5th floor of a 7 storey building, was 27.5 km from the 2010 Darfield earthquake epicentre. The Canterbury Museum Entomology Collection, which is housed in the basement of a multi-storeyed heritage building, was 10 km from the 2011 Christchurch earthquake epicentre. We discuss the impacts of the earthquakes on these collections, the causes of the damage to the specimens and facilities, and subsequent efforts that were made to prevent further damage in the event of future seismic events. We also discuss the wider need for preparedness against the risks posed by natural disasters and other catastrophic events.
Damage to a house in Richmond. A brick chimney has visibly twisted and there are gaps between the bricks. The photographer comments, "One chimney is damaged but still standing - for now. (It was taken down on the morning of Day 2, just as well)".
Damage to the dome of the Cathedral of the Blessed Sacrament. Cracking around the base of the dome shows how it has moved. In the foreground, damage to the north-west corner of the building can be seen. The photographer comments, "A bike ride around the CBD. Catholic Cathedral, Barbadoes St".
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Note: these photos were taken on a cellphone; mind the quality.
Damage to the Dallington Discount Market, the facade of which has collapsed.
Damage to a house in Richmond. A brick chimney has visibly twisted and there are gaps between the bricks. The photographer comments, "Damaged chimney. We'll have to get this taken down tidily, but our roofer friends are a bit busy... (It was taken down on the morning of Day 2, just as well)".
Badly damaged in both the September and February quakes and over 6000 aftershocks the Point Pleasant yacht club had started to sink into the Avon estuary before being demolished in July 2011 after the June 6.3 earthquake
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Monumental masons is a gravestone maker. Note: these photos were taken on a cellphone; mind the quality.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. This was a headstone makers store. Note: these photos were taken on a cellphone; mind the quality.
A diagram which shows outputs from PDAT (with explanations).
A diagram which shows outputs from PDAT calibration/validation (with explanations).
Damage to a house in Richmond. The brick wall is badly cracked and twisted, and some bricks have fallen, exposing the lining paper below. The driveway is cracked and covered in liquefaction. The photographer comments, "These photos show our old house in River Rd. More shaking damage on the east wall of the living room at our house".
The damaged Carlton Hotel. The parapet and part of the upper storey has collapsed.
Damaged buildings on Manchester Street, looking south from the intersection with St Asaph Street.
Damage to a house in Richmond. A large crack runs through a brick wall.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. The New Zealand Army, along with Police, were minding the cordons. Note: these photos were taken on a cellphone; mind the quality.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. The New Zealand Army, along with Police, were minding the cordons. Note: these photos were taken on a cellphone; mind the quality.
The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. The New Zealand Army, along with Police, were minding the cordons. Note: these photos were taken on a cellphone; mind the quality.