Reparability of earthquake damaged Reinforced Concrete walls

Research papers, University of Canterbury Library

The 2010-2011 Christchurch earthquakes generated damage in several Reinforced Concrete (RC) buildings, which had RC walls as the principal resistant element against earthquake demand. Despite the agreement between structural engineers and researchers in an overall successfully performance there was a lack of knowledge about the behaviour of the damaged structures, and even deeper about a repaired structure, which triggers arguments between different parties that remains up to these days. Then, it is necessary to understand the capacity of the buildings after the earthquake and see how simple repairs techniques improve the building performance. This study will assess the residual capacity of ductile slender RC walls according to current standards in New Zealand, NZS 3101.1 2006 A3. First, a Repaired RC walls Database is created trying to gather previous studies and to evaluate them with existing international guidelines. Then, an archetype building is designed, and the wall is extracted and scaled. Four half-scale walls were designed and will be constructed and tested at the Structures Testing Laboratory at The University of Auckland. The overall dimensions are 3 [m] height, 2 [m] length and 0.175 [m] thick. All four walls will be identical, with differences in the loading protocol and the presence or absence of a repair technique. Results are going to be useful to assess the residual capacity of a damaged wall compare to the original behaviour and also the repaired capacity of walls with simpler repair techniques. The expected behaviour is focussed on big changes in stiffness, more evident than in previously tested RC beams found in the literature.

BeckerFraserPhotos February 2012 photograph 0645

Images, UC QuakeStudies

A photograph of a shipping container suspended from a crane. The photograph is captioned by BeckerFraserPhotos, "The container is being placed against the end of the building being demolished to protect the building beneath it from falling debris".

BeckerFraserPhotos June 2012 photograph 301

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Site of 77 Lichfield Street (Westpac building in the background undergoing demolition)".

BeckerFraserPhotos September 2011 photograph 339

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Cashel Street - worker has written in the demolition dust with his finger".

BeckerFraserPhotos April 2011 photograph 099

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "A demolition truck outside the St Elmo Court site on Montreal Street".

BeckerFraserPhotos October 2011 photograph 215

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Establishment Apartments under demolition, on the corner of Peterborough and Victoria Streets".

BeckerFraserPhotos October 2011 photograph 213

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Establishment Apartments under demolition, on the corner of Peterborough and Victoria Streets".

BeckerFraserPhotos December 2011 photograph 2357

Images, UC QuakeStudies

A photograph of a demolition site on London Street. In the background is the Port Hole temporary bar.

BeckerFraserPhotos February 2012 photograph 0252

Images, UC QuakeStudies

A photograph of an excavator on a Gloucester Street demolition site. Rydges hotel is visible in the background.

BeckerFraserPhotos July 2011 photograph 636

Images, UC QuakeStudies

A photograph of a demolition site. The photograph is captioned by BeckerFraserPhotos, "2 London Street, Lyttelton".

BeckerFraserPhotos October 2011 photograph 074

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Demolition of the National Library building, corner of Salisbury and Manchester Streets".

BeckerFraserPhotos July 2011 photograph 1349

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "A demolition crew having smoko in their 'tearoom' on Madras Street".

BeckerFraserPhotos September 2011 photograph 306

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Repairing the damaged footpath at the Bridge of Remembrance, Cashel Street".

BeckerFraserPhotos November 2011 photograph 059

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "Procope Coffee House on Victoria Street, under repair from earthquake damage".

NicksPlace Photograph 188

Images, UC QuakeStudies

The word "repairs" painted on the side of a building has a large crack running through it.

old iMac down

Images, eqnz.chch.2010

(It was already opened up mid-way through a repair. But it wasn't on the floor!)

Business support programme examples

Articles, UC QuakeStudies

A document containing examples of items and activities SCIRT implemented as part of the programme to support businesses affected and disrupted by SCIRT central city rebuild work.

Keeping the City Moving - From a Transport Perspective

Articles, UC QuakeStudies

A research project which presents the traffic and transport planning that has been undertaken to achieve the overarching goal of rebuilding Christchurch, whilst keeping the traffic moving.

Central City Utilities Coordination

Articles, UC QuakeStudies

A copy of the plan, created in 2011, detailing how the rebuild of the three waters and road infrastructure was to be coordinated with other utility operators.

BeckerFraserPhotos March 2012 photograph 217

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "The Environment Canterbury Emergency Management Office".

BeckerFraserPhotos March 2012 photograph 215

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "The Environment Canterbury Emergency Management Office".

BeckerFraserPhotos March 2012 photograph 216

Images, UC QuakeStudies

Photograph captioned by BeckerFraserPhotos, "The Environment Canterbury Emergency Management Office".

Photograph by Paul Corliss 3075

Images, UC QuakeStudies

A photograph of a sign advertising the SCIRT website on the banks of the Avon River.

Paul and Sam Corliss's Street Art Photograph (2015:03:22 02:49:24)

Images, UC QuakeStudies

A photograph of street art on Dyers Pass Road at the Bromley wood and demolition yard, Silvan Salvage. The artwork depicts a tree on the left and tag writing on the right. The blue text says "Teaching old logs new tricks" and the white text says "The Silvan Salvage".

BeckerFraserPhotos February 2012 photograph 0678

Images, UC QuakeStudies

A photograph taken from the top of the BNZ building. The photograph is captioned by BeckerFraserPhotos, "From left to right are the Brannigans building (under demolition), former Government Life Building, Farmers building, MFL building (under demolition), Forsyth Barr building (staying) , PricewaterhouseCoopers building (going) and the roof of the cathedral in the foreground".

Think he Spotted Me!

Images, eqnz.chch.2010

Demolition of the old Millers building is just about complemented. On my walk around the city in the rain.. thought it may have stopped.. but didn't so I just kept walking! June 12, 2014 Christchurch New Zealand.

The Value of SCIRT Report – Summary

Articles, UC QuakeStudies

A document summarising the establishment, structure and outcomes of the Value of SCIRT initiative.

The Value of SCIRT Report – in Full

Articles, UC QuakeStudies

A document describing the origins, establishment and operation of a value management regime and framework that gave focus and improved performance of the SCIRT organisation.

GPS Photo Manual

Articles, UC QuakeStudies

Photo manual and guide provided to design and delivery teams at SCIRT.

All for One, One for All: The SCIRT Collaborative-Competitive Model

Articles, UC QuakeStudies

A document which describes the SCIRT model and how it drove both collaboration and competition.