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Images for LIQUEFACTION; more images...
sand volcano versus shed
Images, eqnz.chch.2010
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sand volcano versus shed
Images, eqnz.chch.2010
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sand volcano gushing
Images, eqnz.chch.2010
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sand volcano versus path
Images, eqnz.chch.2010
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sand volcano versus vegetables
Images, eqnz.chch.2010
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Evaluation of liquefaction susceptibility of soils using Screw Driving Sou…
Research papers, The University of Auckland Library
During the recent devastating earthquakes in Christchurch, many residential houses were damaged due to widespread liquefaction of the ground. In-situ testing is widely used as a convenient method for evaluating liquefaction potential of soils. Cone penetration test (CPT) and standard penetration test (SPT) are the two popular in situ tests which are widely used in New Zealand for site characterization. The Screw Driving Sounding (SDS) method is a relatively new operating system developed in Japan consisting of a machine that drills a rod into the ground by applying torque at seven steps of axial loading. This machine can continuously measure the required torque, load, speed of penetration and rod friction during the test, and therefore can give a clear overview of the soil profile along the depth of penetration. In this paper, based on a number of SDS tests conducted in Christchurch, a correlation was developed between tip resistance of CPT test and SDS parameters for layers consisting of different fines contents. Moreover, using the obtained correlation, a chart was proposed which relates the cyclic resistance ratio to the appropriate SDS parameter. Using the proposed chart, liquefaction potential of soil can be estimated directly using SDS data. As SDS method is simpler, faster and more economical test than CPT and SPT, it can be a reliable alternative in-situ test for soil characterization, especially in residential house constructions.
Kim Wright WEMO Photograph 051
Images, UC QuakeStudies
A photograph of earthquake damage to a road in Christchurch. A hole has been filled with gravel, and a road cone placed on top. In the background, cracks and liquefaction can be seen.
BeckerFraserPhotos September 2010 photograph 073
Images, UC QuakeStudies
Flooding along Avonside Drive. The power poles along the road are on an outward lean due to liquefaction at the base. Concrete blocks have been pushed up against them to keep them upright.
BeckerFraserPhotos March 2012 photograph 042
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "15 Waygreen Avenue in New Brighton, now red zoned land. The homeowner still lives in this property and is keeping it in immaculate condition".
BeckerFraserPhotos December 2011 photograph 2343
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "A view looking south along Wattle Drive, New Brighton towards the Port Hills. This part of the street is red zoned".
BeckerFraserPhotos December 2011 photograph 2344
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "Wattle Drive in New Brighton. This part of the street is red zoned. This red zoned house is on the boundary between the zones".
BeckerFraserPhotos December 2011 photograph 0065
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "Jenni and Keith Hague with Lillian and Elaine outside their home at 7 Ching Gardens. They have found somewhere else suitable to live and hope to complete the sale of this house to CERA soon".
BeckerFraserPhotos March 2012 photograph 061
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Waygreen Avenue in New Brighton. The homeowners at the end of this drive are staying here until their new homes are available. The stagnant water on their drive is full of algae".
BeckerFraserPhotos February 2011 photograph 318
Images, UC QuakeStudies
A view down Galbraith Avenue in Avonside. The footpath and road have been cracked by the 4 September 2010 earthquake. Small deposits of dry liquefaction silt can be seen on patches of the road.
BeckerFraserPhotos February 2011 photograph 319
Images, UC QuakeStudies
A view down Galbraith Avenue in Avonside. The footpath and road have been cracked by the 4 September 2010 earthquake. Small deposits of dry liquefaction silt can be seen on patches of the road.
BeckerFraserPhotos December 2011 photograph 0078
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "A blue water pipe snakes along the pile of liquefaction on the footpaths of Tasman Place. The pipe is delivering water to the few homes still occupied".
Farmland Rehabilitation Video 05
Videos, UC QuakeStudies
A video of a tractor on a farm near River Road in Lincoln. The tractor is pulling a power harrow over a liquefaction blister. This was one of several soil-remediation techniques tested on farms affected by the 4 September 2010 earthquake.
Farmland Rehabilitation Video 04
Videos, UC QuakeStudies
A video of a tractor on a farm near River Road in Lincoln. The tractor is pulling a power harrow over a liquefaction blister. This was one of several soil-remediation techniques tested on farms affected by the 4 September 2010 earthquake.
Mark Lincoln Photograph 009
Images, UC QuakeStudies
Damage to the Gayhurst Road bridge. The road has buckled due to the bridge's movement, and the bridge is cordoned off. Liquefaction covers part of the street, and in the background St Paul's Church is also cordoned off.
BeckerFraserPhotos February 2011 photograph 340
Images, UC QuakeStudies
Two damaged driveways on Acland Avenue in Avonside. Dried liquefaction can be seen in the gap between the two driveways, and behind them the ground has sunk. Weeds have grown through cracks in the concrete.
BeckerFraserPhotos December 2011 photograph 1951
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "Volunteers from the Student Volunteer Army clearing silt in the garden of a property along Flemington Avenue".
BeckerFraserPhotos October 2011 photograph 224
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "23 Seabreeze Close, Bexley. Through the window pane beside the door you can see silt piled about 30 cm high inside the house".
BeckerFraserPhotos October 2011 photograph 226
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "23 Seabreeze Close, Bexley. The view through the window here shows the size of the silt piled against the front door".
BeckerFraserPhotos February 2011 photograph 339
Images, UC QuakeStudies
Two damaged driveways on Acland Avenue in Avonside. Dried liquefaction can be seen in the gap between the two driveways, and behind them the ground has sunk. Weeds have grown through cracks in the concrete.
BeckerFraserPhotos April 2011 photograph 748
Images, UC QuakeStudies
Scaffolding and bracing on stores in New Regent Street. Plywood has been used to cover up the damaged windows. In front, the paving around the tram tracks has separated in places and liquefaction can be seen.
BeckerFraserPhotos September 2010 photograph 129
Images, UC QuakeStudies
The footpath in front of a building on Williams Street. As the building subsided it took part of the path with it. This gives an idea of how much this commercial building sank due to liquefaction.
Banks Avenue, Richmond - Photograph 21
Images, UC QuakeStudies
A pile of liquefaction silt on Medway Street is cordoned off with road cones. The photographer comments, "Piles of sand and subsiding roads at the intersection of Medway St with Woodchester Ave and Flesher Ave, 10 days after the February quake".
BeckerFraserPhotos May 2013 photograph 123
Images, UC QuakeStudies
An residential property at 7 Waygreen Avenue in New Brighton. The section and footpath is overgrown with weeds and silt from liquefaction. A green sticker on the front window can be seen through the trees.
BeckerFraserPhotos February 2012 photograph 0117
Images, UC QuakeStudies
A photograph of a road cone decorated with Christmas tinsel. The photograph is captioned by BeckerFraserPhotos, "Kingsford Street, Horseshoe Lake, Burwood".
BeckerFraserPhotos May 2013 photograph 112
Images, UC QuakeStudies
An empty section where a house once stood at 27 Waygreen Avenue in New Brighton. The section is overgrown with weeds and silt from liquefaction. An road-cone sits to the left-hand side of the section.