BeckerFraserPhotos February 2012 photograph 0973

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "Brick cladding covering up concrete slab - strong and attractive! Montreal Street".

WEMO ERT Set 1 - March 2011 - Photograph 82

Images, UC QuakeStudies

A photograph of the earthquake-damaged to a house in Christchurch. The far wall has collapsed and many of the concrete blocks have spilled into the garden in front. Emergency tape has been draped in front of the wall as a cordon. A red sticker has also been stuck on the furthest window, indicating that the house is unsafe to enter.

BeckerFraserPhotos June 2012 photograph 232

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "164-170 Hereford Street is used as a concrete recycling and crushing area".

BeckerFraserPhotos February 2011 photograph 278

Images, UC QuakeStudies

A picket fence at 294 Avonside Drive. Cracks can be seen in the concrete of the fence's bottom section.

BeckerFraserPhotos June 2011 photograph 464

Images, UC QuakeStudies

A collapsed concrete block fence in front of a house on the corner of Gayhurst Road and Dallington Terrace.

Photograph by Paul Corliss 3424

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Manchester Street mural".

BeckerFraserPhotos December 2011 photograph 1968

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "A warning sign spray-painted on a concrete wall in Manchester Street".

Photograph by Paul Corliss 0839

Images, UC QuakeStudies

A photograph of a damaged wooden building in Lyttelton. The building is braced with wooden supports and concrete blocks.

Photograph by Paul Corliss 0840

Images, UC QuakeStudies

A photograph of a damaged wooden building in Lyttelton. The building is braced with wooden supports and concrete blocks.

Photograph by Paul Corliss 0823

Images, UC QuakeStudies

A photograph of a damaged wooden building in Lyttelton. The building is braced with wooden supports and concrete blocks.

BeckerFraserPhotos May 2011 photograph 1022

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "178 Cashel Street, viewed from Manchester Street".

BeckerFraserPhotos May 2011 photograph 0987

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Former Druids Building, 239 Manchester Street".

BeckerFraserPhotos May 2011 photograph 0985

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "239 Manchester Street".

Residual Capacity and Repairability of Reinforced Concrete Frame Buildings

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.

BeckerFraserPhotos March 2011 photograph 113

Images, UC QuakeStudies

A pile of bricks, mortar, concrete and rusty metal constituting the remains of the Beckenham Baptist Church on Colombo Street.

Photograph by Paul Corliss 2740

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2787

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

BeckerFraserPhotos June 2012 photograph 090

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Remaining crushed concrete rubble on the site of the Hotel Grand Chancellor, Cashel Street".

Photograph by Paul Corliss 2744

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2745

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2802

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2780

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2781

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2770

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2768

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2771

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2769

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

Photograph by Paul Corliss 2741

Images, UC QuakeStudies

A photograph of the Ash Keating mural, 'Concrete Propositions'. The photograph is captioned by Paul Corliss, "Central city, Manchester Street".

BeckerFraserPhotos September 2010 photograph 081

Images, UC QuakeStudies

A house on Dorset Street with a damaged retaining wall. The concrete blocks have been stacked on the footpath in front.

BeckerFraserPhotos March 2011 photograph 250

Images, UC QuakeStudies

A cracked wall made from rocks and concrete in Clifton. The words, "No. 5 The Spur", have been painted on it.