Tents set up in the Arts car park at the University of Canterbury after the 22 February 2011 earthquake. The tents were used as temporary lecture rooms while the buildings were being checked for damage.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A container being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A truck being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A truck being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A truck being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A truck being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A container being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A container being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
A digger being unloaded from the HMNZS Canterbury. The Royal New Zealand Navy delivered machinery and equipment to Christchurch for use in the recovery effort after the Christchurch Earthquake.
It is well known that buildings constructed using unreinforced masonry (URM) are susceptible to damage from earthquake induced lateral forces that may result in partial or full building collapse. The 2010/2011 Canterbury earthquakes are the most recent New Zealand example of destructive earthquakes, which have drawn people's attention to the inherent seismic weaknesses of URM buildings and anchored masonry veneer systems in New Zealand. A brief review of the data collected following the 2010 Darfield earthquake and more comprehensive documentation of data that was collected following the 2011 Christchurch earthquake is presented, along with the findings from subsequent data interrogation. Large stocks of earthquake prone vintage URM buildings that remain in New Zealand and in other seismically active parts of the world result in the need for minimally invasive and cost effective seismic retrofit techniques. The principal objective of the doctoral research reported herein was to investigate the applicability of near surface mounted (NSM) carbon fibre reinforced polymer (CFRP) strips as a seismic improvement technique. A comprehensive experimental program consisting of 53 pull tests is presented and is used to assess the accuracy of existing FRP-to-masonry bond models, with a modified model being proposed. The strength characteristics of vintage clay brick URM wall panels from two existing URM buildings was established and used as a benchmark when manufacturing replica clay brick test assemblages. The applicability of using NSM CFRP strips as a retrofitting technique for improving the shear strength and the ductility capacity of multi-leaf URM walls constructed using solid clay brick masonry is investigated by varying CFRP reinforcement ratios. Lastly, an experimental program was undertaken to validate the proposed design methodology for improving the strength capacity of URM walls. The program involved testing full-scale walls in a laboratory setting and testing full-scale walls in-situ in existing vintage URM buildings. Experimental test results illustrated that the NSM CFRP technique is an effective method to seismically strengthen URM buildings.
Indigenous Peoples retain traditional coping strategies for disasters despite the marginalisation of many Indigenous communities. This article describes the response of Māori to the Christchurch earthquakes of 2010 and 2012 through analyses of available statistical data and reports, and interviews done three months and one year after the most damaging event. A significant difference between Māori and ‘mainstream’ New Zealand was the greater mobility enacted by Māori throughout this period, with organisations having roles beyond their traditional catchments throughout the disaster, including important support for non-Māori. Informed engagement with Indigenous communities, acknowledging their internal diversity and culturally nuanced support networks, would enable more efficient disaster responses in many countries.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake. The HMZNS Canterbury, HMNZS Otago and HMNZS Pukaki can be seen in the Lyttelton Port.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake. The HMZNS Canterbury, HMNZS Otago and HMNZS Pukaki can be seen in the Lyttelton Port.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake. The HMZNS Canterbury, HMNZS Otago and HMNZS Pukaki can be seen in the Lyttelton Port.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake. The HMZNS Canterbury, HMNZS Otago and HMNZS Pukaki can be seen in the Lyttelton Port.
A photograph of the earthquake damage to the Canterbury Television Building on Gloucester Street. There are large cracks in the columns of the building and many of the windows are broken.
Well-validated liquefaction constitutive models are increasingly important as non-linear time history analyses become relatively more common in industry for key projects. Previous validation efforts of PM4Sand, a plasticity model specifically for liquefaction, have generally focused on centrifuge tests; however, pore pressure transducers installed at several free-field sites during the Canterbury Earthquake Sequence (CES) in Christchurch, New Zealand provide a relatively unique dataset to validate against. This study presents effective stress site response analyses performed in the finite difference software FLAC to examine the capability of PM4Sand to capture the generation of excess pore pressures during earthquakes. The characterization of the subsurface is primarily based on extensive cone penetration tests (CPT) carried out in Christchurch. Correlations based on penetration resistances are used to estimate soil parameters, such as relative density and shear wave velocity, which affect liquefaction behaviour. The resulting free-field FLAC model is used to estimate time histories of excess pore pressure, which are compared with records during several earthquakes in the CES to assess the suitability of PM4Sand.
A photograph of a toppled filing cabinet in an office in the Department of Civil and Natural Resources Engineering at the University of Canterbury, after the 4 September 2010 earthquake.
A photograph of a toppled filing cabinet in an office in the Department of Civil and Natural Resources Engineering at the University of Canterbury, after the 4 September 2010 earthquake.
This has made a huge mess for the residents to clean up. I heard on the news that homes have been damaged by subsidence in areas of earthquake-caused liquefaction like this.