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Images for Christchurch Earthquake; more images...

Research papers, University of Canterbury Library

Earthquake-triggered soil liquefaction caused extensive damage and heavy economic losses in Christchurch during the 2010-2011 Canterbury earthquakes. The most severe manifestations of liquefaction were associated with the presence of natural deposits of clean sands and silty sands of fluvial origin. However, liquefaction resistance of fines-containing sands is commonly inferred from empirical relationships based on clean sands (i.e. sands with less than 5% fines). Hence, existing evaluation methods have poor accuracy when applied to silty sands. Also, existing methods do not quantify appropriately the influence on liquefaction resistance of soil fabric and structure, which are unique to a specific depositional environment. This study looks at the influence of fines content, soil fabric (i.e. arrangement of soil particles) and structure (e.g. layering, segregation) on the undrained cyclic behaviour and liquefaction resistance of fines-containing sandy soils from Christchurch using Direct Simple Shear (DSS) tests on soil specimens reconstituted in the laboratory with the water sedimentation technique. The poster describes experimental procedures and presents early test results on two sands retrieved at two different sites in Christchurch.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Chinese Methodist Church on Papanui Road. The bricks at the top of the tower have crumbled, and the wooden bracing is hanging half off the building. The spire of the tower can be seen to the left where it was moved to following the 4 September 2010 earthquake.

Images, UC QuakeStudies

A photograph of the rubble of the Observatory tower in the South Quad of the Christchurch Arts Centre. The tower collapsed during the 22 February 2011 earthquake. Scaffolding constructed around the tower has also collapsed and is amongst the rubble.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Christchurch Chinese Methodist Church on Papanui Road. The wall of the gable has crumbled, the bricks spilling onto the lawn below. Wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of emergency management personnel in the foyer of the Christchurch Art Gallery. The art gallery was used as the temporary Civil Defence headquarters after the 22 February 2011 earthquake. In the background, a cherry picker can be seen.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Christchurch Chinese Methodist Church on Papanui Road. The gable wall has crumbled, the bricks and window frame falling onto the ground. Wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of emergency management personnel in the foyer of the Christchurch Art Gallery. The art gallery was used as the temporary Civil Defence headquarters after the 22 February 2011 earthquake. In the background, a cherry picker can be seen.

Images, eqnz.chch.2010

Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-003.jpg From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-005.jpg From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-007.jpg From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-002.jpg From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-004.jpg From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-008.jpg From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-001.jpg From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-006.jpg From the collection of Christchurch City Libraries

Images, UC QuakeStudies

A photograph of the earthquake-damaged Observatory tower at the Christchurch Arts Centre. The photograph was taken using a cellphone camera. The top of the tower collapsed during the 22 February 2011 earthquake. The rubble from the tower has been cleared and a tarpaulin has been placed over the top of the broken tower. Tyres have been placed on the tarpaulin to hold it down. A temporary roof has also been constructed over the tower to keep out the rain. Two vehicles are parked in front.

Images, UC QuakeStudies

A photograph of the photocopy template for the Christchurch City Council's yellow sticker. The sticker was used by the Civil Defence after the 2010 and 2011 earthquakes to indicate that a building had been inspected and that structural damage or other safety hazards had been found. The sticker states that there should be no entry to the building, 'except on essential business'. It also states that 'earthquake aftershocks present danger' and that people who enter must do so at their own risk.

Images, UC QuakeStudies

A photograph of parts of the Townsend Telescope recovered from the rubble of the Observatory tower. The telescope was housed in the tower at the Christchurch Arts Centre. It was severely damaged when the tower collapsed during the 22 February 2011 earthquake.

Images, UC QuakeStudies

A close-up photograph of parts of the Townsend Telescope recovered from the rubble of the Observatory tower. The telescope was housed in the tower at the Christchurch Arts Centre. It was severely damaged when the tower collapsed during the 22 February 2011 earthquake.