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Images for post-earthquake; more images...

Images, eqnz.chch.2010

Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0473 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0464 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0474 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0467 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0463 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0469 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0468 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0470 From the collection of Christchurch City Libraries

Research papers, The University of Auckland Library

Reinforced concrete (RC) frame buildings designed according to modern design standards achieved life-safety objectives during the Canterbury earthquakes in 2010-11 and the Kaikōura earthquake in 2016. These buildings formed ductile plastic hinges as intended and partial or total building collapse was prevented. However, despite the fact that the damage level of these buildings was relatively low to moderate, over 60% of multi-storey RC buildings in the Christchurch central business district were demolished due to insufficient insurance coverage and significant uncertainty in the residual capacity and repairability of those buildings. This observation emphasized an imperative need to improve understanding in evaluating the post-earthquake performance of earthquake-damaged buildings and to develop relevant post-earthquake assessment guidelines. This thesis focuses on improving the understanding of the residual capacity and repairability of RC frame buildings. A large-scale five-storey RC moment-resisting frame building was tested to investigate the behaviour of earthquake-damaged and repaired buildings. The original test building was tested with four ground motions, including two repeated design-level ground motions. Subsequently, the test building was repaired using epoxy injection and mortar patching and re-tested with three ground motions. The test building was assessed using key concepts of the ATC-145 post-earthquake assessment guideline to validate its assessment procedures and highlight potential limitations. Numerical models were developed to simulate the peak storey drift demand and identify damage locations. Additionally, fatigue assessment of steel reinforcement was conducted using methodologies as per ATC-145. The residual capacity of earthquake-strained steel reinforcement was experimentally investigated in terms of the residual fatigue capacity and the residual ultimate strain capacity. In addition to studying the fatigue capacity of steel reinforcement, the fatigue damage demand was estimated using 972 ground motion records. The deformation limit of RC beams and columns for damage control was explored to achieve a low likelihood of requiring performance-critical repair. A frame component test database was developed, and the deformation capacity at the initiation of lateral strength loss was examined in terms of the chord rotation, plastic rotation and curvature ductility capacity. Furthermore, the proposed curvature ductility capacity was discussed with the current design curvature ductility limits as per NZS 3101:2006.

Images, eqnz.chch.2010

Skateboard art at Redwood Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0443 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Bright and airy Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0438 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Bright and blue Redwood Library. Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0445 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Bright and airy Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0439 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Comfortable spot to read. Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0442 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Delivering the books. Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0437 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Plenty to choose from at Redwood Library. Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0441 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Interesting to look up at Redwood. Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0440 From the collection of Christchurch City Libraries

Images, eqnz.chch.2010

Plenty to choose from at Redwood Photos taken in Redwood Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Redwood-After-The-Earthquake-IMG_0444 From the collection of Christchurch City Libraries

Images, UC QuakeStudies

A photograph submitted by Emma Oakden to the QuakeStories website. The description reads, "Intersection of Retreat Road and Avonside Drive, post September 4th earthquake".