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.
Heathcote Valley school strong motion station (HVSC) consistently recorded ground motions with higher intensities than nearby stations during the 2010-2011 Canterbury earthquakes. For example, as shown in Figure 1, for the 22 February 2011 Christchurch earthquake, peak ground acceleration at HVSC reached 1.4 g (horizontal) and 2 g (vertical), the largest ever recorded in New Zealand. Strong amplification of ground motions is expected at Heathcote Valley due to: 1) the high impedance contrast at the soil-rock interface, and 2) the interference of incident and surface waves within the valley. However, both conventional empirical ground motion prediction equations (GMPE) and the physics-based large scale ground motions simulations (with empirical site response) are ineffective in predicting such amplification due to their respective inherent limitations.
A photograph of a laminated image tied to the fencing around Cathedral Square. The image depicts the Citizen's Memorial as it looked before the Canterbury earthquakes.
A photograph of the helicopter used by a team from Geotechnical Extreme Events Reconnaissance (GEER) to take aerial photographs of Canterbury following the 4 September earthquake.
Many buildings with relatively low damage from the 2010-2011 Canterbury were deemed uneconomic to repair and were replaced [1,2]. Factors that affected commercial building owners’ decisions to replace rather than repair, included capital availability, uncertainty with regards to regional recovery, local market conditions and ability to generate cash flow, and repair delays due to limited property access (cordon). This poster provides a framework for modeling decision-making in a case where repair is feasible but replacement might offer greater economic value – a situation not currently modeled in engineering risk analysis.
A photograph of two workers walking down Gloucester Street. To the right, the earthquake-damaged Canterbury Times and Star Building can be seen. A car parked in front has been crushed by falling debris.
A photograph of the earthquake damage to the Canterbury Provincial Chambers Buildings on Durham Street. Large sections of the masonry have collapsed, spilling onto the road. Wire fencing has been placed around the building as a cordon. Scaffolding erected up the side of the building after the 4 September 2010 earthquake has collapsed. In the distance, a crane is parked on the street.
During the Christchurch earthquake of February 2011, several midrise reinforced concrete masonry (RCM) buildings showed performance levels that fall in the range of life safety to near collapse. A case study of one of these buildings, a six-story RCM building deemed to have reached the near collapse performance level, is presented in this paper. The RCM walls on the second floor failed due to toe crushing, reducing the building's lateral resistance in the east–west direction. A three-dimensional (3-D) nonlinear dynamic analysis was conducted to simulate the development of the governing failure mechanism. Analysis results showed that the walls that were damaged were subjected to large compression loads during the earthquake, which caused an increase in their in-plane lateral strength but reduced their ductility capacity. After toe crushing failure, axial instability of the model was prevented by a redistribution of gravity loads. VoR - Version of Record
A photograph of the earthquake damage to a brick chimney.
Sand volcanoes put the silt all over the road.
An usual thing to see coming from the ground in Hoon Hay, Christchurch.
A blog post from Moya Sherriff about her eighth month as Intern for the Canterbury Cultural Collections Recovery Centre (CCCRC). In this post Sherriff interviews staff of the Kaiapoi Museum about losing their museum building following the Canterbury earthquakes, and moving their collections into the Canterbury Cultural Collections Recovery Centre. This blog post was downloaded on 18 November 2014.
File reference: CCL-2011-11-22-IMG_0784 PODattheShow November2011 From the collection of Christchurch City Libraries.
A photograph of a laminated image tied to the fencing around Cathedral Square. The image depicts the ChristChurch Cathedral as it looked before the Canterbury earthquakes.
A vehicle and caravan 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.
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Shipping containers against the cliff on the road to Sumner, Christchurch. File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_012.JPG From the collection of Christchurch City Libraries.
A report created by the University of Canterbury Quake Centre and the University of Auckland, funded by the Building Research Levy. It shows how an innovation process was initiated and managed throughout the rebuilding of the horizontal infrastructure after the Canterbury earthquakes.
A worker in a high visibility vest and a hard hat repairing and strengthening the outside of a building at the University of Canterbury. The photograph has been captioned by BeckerFraserPhotos, "The repair work on the buildings at the University of Canterbury looks similar to the scenes in the CBD".
Construction materials outside a house on Canterbury Street in Lyttelton. The house is being demolished after the 22 February 2011 earthquake. Wire fencing and road cones cordon off the area, and a bulldozer and a digger are parked on the road.
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.
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 photograph of the earthquake damage to the Canterbury Provincial Chambers. The top section of the building has crumbled, taking the scaffolding with it. Wire fencing has been placed around the building as a cordon.
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 photograph of an earthquake-damaged bridge over the Kaiapoi River.
A photograph of an earthquake-damaged bridge over the Kaiapoi River.
A photograph of an earthquake-damaged bridge over the Kaiapoi River.
A truck carrying a generator 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 carrying a generator 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.
File reference: CCL-2011-11-22-IMG_0783PODattheShow November2011 From the collection of Christchurch City Libraries.