Search

found 4556 results

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. The liquefaction behaviour of Christchurch fines-containing (silty) sands is investigated through a series of Direct Simple Shear (DSS) tests. This type of test better resembles earthquake loading conditions in soil deposits compared to cyclic triaxial tests. Soil specimens are reconstituted in the laboratory with the water sedimentation technique. This preparation method yields soil fabrics similar to those encountered in fluvial soil deposits, which are common in the Christchurch area. Test results provide preliminary indications on how void ratio, relative density, preparation method and fines content influence the cyclic liquefaction behaviour of sand-silt mixtures depending on the properties of host sand and silt.

Research papers, The University of Auckland Library

Case study unreinforced masonry (URM) buildings that were seismically retrofitted prior to the 2010/11 Canterbury earthquake sequence and exhibited successful performance during these earthquakes are presented herein. Selected buildings were divided into the following categories based on size and complexity: (1) simple, single storey box type buildings (i.e. electrical substations), (2) common and simple commercial buildings, and (3) large and complex clay brick and stone URM buildings. The retrofitted case study URM buildings were evaluated based on overall structural seismic performance as well as the categories of initial seismic design, heritage preservation, architectural appeal, and cost. Detailed observations of 4 representative case study buildings and a summary of findings are reported herein. http://db.nzsee.org.nz/2017/Orals.htm

Images, UC QuakeStudies

Members of the New Zealand Fire Service and USAID Disaster Assistance Response Team (DART) shaking hands outside the Christchurch City Fire Station on Kilmore Street. DART travelled to Christchurch after the 22 February 2011 earthquake to help out in the relief efforts.

Images, eqnz.chch.2010

Photos taken in Lyttelton showing the demolition of various buildings following the February 22 earthquake. File reference: CCL-2011-05-20-Lyttelton-Demolition-P1120456 From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Photos taken in Lyttelton showing the demolition of various buildings following the February 22 earthquake. File reference: CCL-2011-05-20-Lyttelton-Demolition-P1120446 From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Photos taken in Lyttelton showing the demolition of various buildings following the February 22 earthquake. File reference: CCL-2011-05-20-Lyttelton-Demolition-P1120472 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.

Images, UC QuakeStudies

A photograph of pieces of broken china laid on a mosaic design.Crack'd for Christchurch comments, "Marie begins the very first flower. It is so difficult and time consuming that we are all in despair. Will this take forever? No-one is getting paid and we all have jobs and lives in some chaos thanks to the earthquakes."

Images, eqnz.chch.2010

Friday 22 February 2013. Official Supported Site for River of Flowers: Horseshoe Lake Riverbank on Lake Terrace Road, opposite the bus stop between Oregon and Tangmere Places Hosted by: Burwood Primary School and Community. File reference: CCL-2013-02-22-River-of-FlowersDSC_03401.JPG From the collection of Christchurch City Libraries. ...

Images, UC QuakeStudies

Emergency Management personnel outside the Christchurch Art Gallery. The Art Gallery was used as the headquarters for Civil Defence after the 22 February 2011 earthquake. In the background, the east end of the Arts Centre can be seen.

Images, UC QuakeStudies

Mitchell Brown from the USAR National Management Team farewelling the Taiwanese Search and Rescue Team at the Christchurch International Airport. The team is heading home after helping with the emergency response to the Canterbury Earthquake.

Images, UC QuakeStudies

Rob Saunders from the New Zealand Fire Department farewelling the Taiwanese Search and Rescue Team at the Christchurch International Airport. The team is heading home after helping with the emergency response to the Canterbury Earthquake.

Images, UC QuakeStudies

Mitchell Brown from the USAR National Management Team farewelling the Taiwanese Search and Rescue Team at the Christchurch International Airport. The team is heading home after helping with the emergency response to the Canterbury Earthquake.