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Research papers, The University of Auckland Library

The full scale, in-situ investigations of instrumented buildings present an excellent opportunity to observe their dynamic response in as-built environment, which includes all the real physical properties of a structure under study and its surroundings. The recorded responses can be used for better understanding of behavior of structures by extracting their dynamic characteristics. It is significantly valuable to examine the behavior of buildings under different excitation scenarios. The trends in dynamic characteristics, such as modal frequencies and damping ratios, thus developed can provide quantitative data for the variations in the behavior of buildings. Moreover, such studies provide invaluable information for the development and calibration of realistic models for the prediction of seismic response of structures in model updating and structural health monitoring studies. This thesis comprises two parts. The first part presents an evaluation of seismic responses of two instrumented three storey RC buildings under a selection of 50 earthquakes and behavioral changes after Ms=7.1 Darfield (2010) and Ms=6.3 Christchurch (2011) earthquakes for an instrumented eight story RC building. The dynamic characteristics of the instrumented buildings were identified using state-of-the-art N4SID system identification technique. Seismic response trends were developed for the three storey instrumented buildings in light of the identified frequencies and the peak response accelerations (PRA). Frequencies were observed to decrease with excitation level while no trends are discernible for the damping ratios. Soil-structure interaction (SSI) effects were also determined to ascertain their contribution in the seismic response. For the eight storey building, it was found through system identification that strong nonlinearities in the structural response occurred and manifested themselves in all identified natural frequencies of the building that exhibited a marked decrease during the strong motion duration compared to the pre-Darfield earthquakes. Evidence of foundation rocking was also found that led to a slight decrease in the identified modal frequencies. Permanent stiffness loss was also observed after the strong motion events. The second part constitutes developing and calibrating finite element model (FEM) of the instrumented three storey RC building with a shear core. A three dimensional FEM of the building is developed in stages to analyze the effect of structural, non-structural components (NSCs) and SSI on the building dynamics. Further to accurately replicate the response of the building following the response trends developed in the first part of the thesis, sensitivity based model updating technique was applied. The FEMs were calibrated by tuning the updating parameters which are stiffnesses of concrete, NSCs and soil. The updating parameters were found to generally follow decreasing trends with the excitation level. Finally, the updated FEM was used in time history analyses to assess the building seismic performance at the serviceability limit state shaking. Overall, this research will contribute towards better understanding and prediction of the behavior of structures subjected to ground motion.

Videos, UC QuakeStudies

A video of a press conference with Christchurch Mayor Lianne Dalziel and Raf Manji, Chair of the Christchurch City Council Finance Committee, about the KordaMentha report. KordaMentha is an independent auditing firm which specialises in insolvencies and corporate recovery. The report analysed the Christchurch City Council's three year budgeting plan and the financial strategies that lay behind it. Much of this budget dealt with the challenges in Christchurch caused by the 2010 and 2011 earthquakes. Dalziel talks about the cost of mending Christchurch's infrastructure, the Council's insurance settlement, and the need to address the findings in the report. Manji talks about the Council's financial options following the report.

Audio, Radio New Zealand

Christchurch's historic Theatre Royal will reopen for business in November, with bookings about to open for the first show, the Royal New Zealand Ballet season of "A Christmas Carol" The 106-year old theatre has been closed for almost four years because of earthquake damage in the 2010 and 2011 earthquakes. The $40million rebuild and restoration project will be completed over the next five months and on 17 November 2014, the 'Grand Old Lady' of New Zealand theatre will reopen her doors for performances. With so few venues for performance left in the city, including the Town Hall out of commission indefinitely, the rebuild of the Theatre Royal is very good news for Christchurch audiences Chief executive Neil Cox explains the process of getting oldest Edwardian theatre in the country back in use and mounting the large scale theatrical productions it has been famous for.

Videos, UC QuakeStudies

A video of a protest against the demolition of the Majestic Theatre on Manchester Street. The video includes an interview with Christchurch City Councillor Yani Johanson. Johanson talks about how the lack of heritage recovery programme in Christchurch has meant that many heritage buildings have destroyed, mainly through the fast-tracking of consenting by the government. Johanson asks that the government returns normal democratic decision making over heritage to the Christchurch City Council so that the public can have a say. The video also includes footage of the Wizard and a protester speaking outside the Majestic Theatre.

Audio, Radio New Zealand

Professor Jacky Bowring has been a consultant to both the Ministry for Culture and Heritage, and CERA for the process for the EQ Memorial, as well as for the Christchurch City Council from the early days of the Recovery Plan, when the section on 'Remembering the Earthquakes' was developed. It was one of those times when her areas of research and passion suddenly became very real.

Research papers, University of Canterbury Library

The Avon-Heathcote Estuary, located in Christchurch, New Zealand, experienced coseismic deformation as a result of the February 22nd 2011 Christchurch Earthquake. The deformation is reflected as subsidence in the northern area and uplift in the southern area of the Estuary, in addition to sand volcanoes which forced up sediment throughout the floor of the Estuary altering estuary bed height and tidal flow. The first part of the research involved quantifying the change in the modern benthic foraminifera distribution as a result of the coseismic deformation caused by the February 22nd 2011 earthquake. By analysing the taxa present immediately post deformation and then the taxa present 2 years post deformation a comparison of the benthic foraminifera distribution can be made of the pre and post deformation. Both the northern and the southern areas of the Estuary were sampled to establish whether foraminifera faunas migrated landward or seaward as a result of subsidence and uplift experienced in different areas. There was no statistical change in overall species distribution in the two year time period since the coseismic deformation occurred, however, there were some noticeable changes in foraminifera distribution at BSNS-Z3 showing a landward migration of taxa. The changes that were predicted to occur as a result of the deformation of the Estuary are taking longer than expected to show up in the foraminiferal record and a longer time period is needed to establish these changes. The second stage involved establishing the modern distribution of foraminifera at Settlers Reserve in the southern area of the Avon-Heathcote Estuary by detailed sampling along a 160 m transect. Foraminifera are sensitive to environmental parameters, tidal height, grainsize, pH and salinity were recorded to evaluate the effect these parameters have on distribution. Bray-Curtis two-way cluster analysis was primarily used to assess the distribution pattern of foraminifera. The modern foraminifera distribution is comparable to that of the modern day New Zealand brackish-water benthic foraminifera distribution and includes species not yet found in other studies of the Avon-Heathcote Estuary. Differences in sampling techniques and the restricted intertidal marshland area where the transect samples were collected account for some of the differences seen between this model and past foraminifera studies. xiii The final stage involved sampling a 2.20 m core collected from Settlers Reserve and using the modern foraminiferal distribution to establish a foraminiferal history of Settlers Reserve. As foraminifera are sensitive to tidal height they may record past coseismic deformation events and the core was used to ascertain whether record of past coseismic deformation is preserved in Settlers Reserve sediments. Sampling the core for foraminifera, grainsize, trace metals and carbon material helped to build a story of estuary development. Using the modern foraminiferal distribution and the tidal height information collected, a down core model of past tidal heights was established to determine past rates of change. Foraminifera are not well preserved throughout the core, however, a sudden relative rise in sea level is recorded between 0.25 m and 0.85 m. Using trace metal and isotope analysis to develop an age profile, this sea level rise is interpreted to record coseismic subsidence associated with a palaeoseismic event in the early 1900’s. Overall, although the Avon-Heathcote Estuary experienced clear coseismic deformation as a result of the 22nd of February 2011 earthquake, modern changes in foraminiferal distribution cannot yet be tracked, however, past seismic deformation is identified in a core. The modern transect describes the foraminifera distribution which identifies species that have not been identified in the Avon-Heathcote Estuary before. This thesis enhances the current knowledge of the Avon-Heathcote Estuary and is a baseline for future studies.

Audio, Radio New Zealand

TRACEY MARTIN to the Minister responsible for Novopay: Does he stand by his statement of 11 February 2014, "education payroll is the most complex in New Zealand and more work remains to be done to simplify the business processes to ensure it runs as smoothly as possible each year"? Hon DAVID CUNLIFFE to the Prime Minister: Does he stand by his statement that "the true builders of that future are the millions of New Zealanders working in the homes, the businesses, the industries of our country"? MAGGIE BARRY to the Minister of Finance: What progress is the Government making with its share offer programme, which is freeing up money for reinvestment in new public assets without having to increase Government debt? ANDREW LITTLE to the Attorney-General: Will he release all correspondence between the Christchurch Crown Solicitor or any other solicitor acting for the Ministry of Business, Innovation and Employment, and counsel for Peter Whittall on the decision not to proceed with the prosecution of Mr Whittall under the Health and Safety in Employment Act 1992 relating to conditions at the Pike River Mine that lead to the deaths of 29 miners; if not, why not? KEVIN HAGUE to the Minister of Health: When were Ministry of Health officials first informed that the dispute between the Southern District Health Board and South Link Health involved allegations of the misuse of public funding, and when were they first informed that this alleged misuse was suspected to involve elements that could be fraud? Dr CAM CALDER to the Minister for Tertiary Education, Skills and Employment: What announcements has the Government made on the Tertiary Education Strategy for New Zealand? Hon RUTH DYSON to the Minister responsible for the Earthquake Commission: Does he stand by his statement made yesterday in the House with regard to Canterbury Labour Members of Parliament that they "have made no more than five requests for assistance through the Earthquake Commission"; if not, when will he be correcting his statement and apologising? MARK MITCHELL to the Minister for Communications and Information Technology: How is the Government's Information and Communication Technology programme improving New Zealanders' access to improved technology and better connectivity? GRANT ROBERTSON to the Minister of Justice: On what date did she receive an invitation to visit the Shanghai office of Oravida Ltd during her Ministerial visit to China in October 2013, and what actions did she take to ensure this visit met her obligations under the Cabinet Manual? CATHERINE DELAHUNTY to the Associate Minister of Education: Did the communities in Christchurch, Auckland and Queenstown, where four schools are to be built using a public-private partnership (PPP) model, ask the Government for private sector management of their school buildings? PAUL FOSTER-BELL to the Minister of Health: What investment is the Government making in improving nutrition and exercise for pre-schoolers? JOANNE HAYES to the Minister of Corrections: What steps has the Government taken to improve access to alcohol and drug treatment for prisoners?

Audio, Radio New Zealand

DAVID BENNETT to the Minister of Finance: How is the Government's economic programme helping to keep interest rates lower during this economic cycle, compared to the previous economic cycle in the mid-2000s? Dr RUSSEL NORMAN to the Minister of Energy and Resources: How much more is an average New Zealand household that uses 8,000kwh of power annually paying for electricity per year as of November 2013 compared to November 2008, according to the Ministry of Business, Innovation, and Employment's latest Quarterly Survey of Domestic Electricity Prices? Hon DAVID PARKER to the Minister of Finance: What will he do to "spread some of the benefits of growth" when hourly wage rates have only grown by 1.6 percent in the year to December 2013, which is close to 0 percent in real terms, when 45 percent of listed corporates have double-digit profit growth? JACQUI DEAN to the Minister for the Environment: What recent announcements has the Government made on the classification for drilling for oil and gas in New Zealand's Exclusive Economic Zone? GRANT ROBERTSON to the Minister of Justice: When she told the House yesterday "I had previously told Oravida that it could not use my name or photograph to endorse or promote its business products or services" when was that and what specific circumstances did it relate to? COLIN KING to the Minister for Tertiary Education, Skills and Employment: How is the Youth Guarantee Scheme helping the Government achieve the Better Public Services target of 85 percent of all 18-year-olds achieving NCEA Level two or an equivalent qualification in 2017? CAROL BEAUMONT to the Minister of Women's Affairs: Does she have confidence in the Ministry of Women's Affairs given their 2013 Annual Report shows that six out of seven policy outcomes have stayed the same or gone backwards in the last past year; if so, why? SCOTT SIMPSON to the Minister for Courts: How is the Government improving the way the Disputes Tribunal works to make it easier for New Zealanders to resolve civil disputes? Hon TREVOR MALLARD to the Minister of Internal Affairs: What action, if any, has he taken this year to show the Prime Minister that he has met the highest ethical standards required by Section 2.53 of the Cabinet Manual? ALFRED NGARO to the Minister of Pacific Island Affairs: What steps is the Government taking to lift the skills of Pacific people in New Zealand? DENIS O'ROURKE to the Minister for Canterbury Earthquake Recovery: Does he accept the conclusion in the Human Rights Commission's report Monitoring Human Rights in the Canterbury Earthquake Recovery that "many people affected by the earthquakes continue to experience deteriorating standards of living and impacts on their quality of life that go beyond the immediate effects of the disaster"? CATHERINE DELAHUNTY to the Minister of Energy and Resources: Has he had any discussions with any Indian Government Ministers about selling Solid Energy assets?

Research papers, The University of Auckland Library

The current seismic design practice for reinforced concrete (RC) walls has been drawn into question following the unsatisfactory performance of several RC wall buildings during the Canterbury earthquakes. An overview of current research being undertaken at the University of Auckland into the seismic behaviour of RC walls is presented. The main objectives of this research project are to understand the observed performance of RC walls in Christchurch, quantify the seismic loads on RC walls, and developed improved design procedures for RC walls that will assist in revisions to the New Zealand Concrete Structures Standard. A database summarising the performance of RC wall buildings in the Christchurch CBD was collated to identify damage modes and case-study buildings. A detailed investigation is underway to verify the seismic performance of lightly reinforced concrete walls and initial numerical modeling and small-scale tests are presented in addition to details of planned experimental tests of RC walls. Numerical modelling is being used to understand the potential influence that interactions between walls and other structural elements have on the seismic response of buildings and the loads generated on RC walls. The results from finite element analysis of a severely damaged RC wall in Christchurch highlighted the effect that the floor diaphragms have on the distribution of shear stains in the wall.

Audio, Radio New Zealand

Hon DAVID CUNLIFFE to the Prime Minister: Is he still committed to "ensuring our schools are working for all students", and is he satisfied his Government has done enough to ensure that every child has equal access to a low-cost public education? CLAUDETTE HAUITI to the Minister of Finance: What steps has the Government taken to turn around the Treasury's forecast net Government debt? METIRIA TUREI to the Prime Minister: Does he stand by all his statements? Hon DAVID PARKER to the Minister of Finance: Does he agree with Infometrics that after the Canterbury rebuild peaks, the New Zealand economy will experience a "hangover" with slow income and GDP growth? SCOTT SIMPSON to the Minister of Justice: What justice initiatives has she announced to address family violence in New Zealand? DAVID SHEARER to the Minister of Foreign Affairs and Trade: When did he first become aware of allegations that led to a Malaysian diplomat being charged with assault with the intent to commit rape and burglary, and what actions did he take? MARK MITCHELL to the Minister of Corrections: What recent announcements has she made on how technology can be used to better protect victims of domestic violence? JAN LOGIE to the Minister of Foreign Affairs: Was he made aware of the wishes, if any, of the woman at the centre of the assault with intent to rape charges laid against a Malaysian diplomat, regarding his return to Malaysia; if so, when? JONATHAN YOUNG to the Minister of Health: What investments has the Government made in health services for Taranaki? CHRIS HIPKINS to the Minister of Education: Is she satisfied that schools receive sufficient funding to deliver the New Zealand curriculum? KANWALJIT SINGH BAKSHI to the Minister for Food Safety: What recent announcements has she made regarding food labelling? DENIS O'ROURKE to the Minister responsible for the Earthquake Commission: Is he satisfied with the progress of the Earthquake Commission in the settlement or disposition of all claims in respect of multi-unit dwellings, arising from the Canterbury earthquake; if so, why?

Images, UC QuakeStudies

A copy of the final image used for the invitation to Julia Holden's exhibition 'its like now'. The exhibition was held at the ArtBox Gallery. The invitation features twelve portraits of local art practitioners. The portraits were part of the exhibition.

Research papers, Lincoln University

"Prior to the devastating 2010-2011 Canterbury earthquakes, the city of Christchurch was already exhibiting signs of a housing affordability crisis. The causes and symptoms were similar to those being experienced in Auckland, but the substantial damage to the housing stock caused by the earthquakes added new dimensions and impetus to the problem. Large swathes of the most affordable housing stock in the east of the city were effectively destroyed by the earthquakes. In itself this would have pushed the mean house price upwards, but compounding problems exacerbated the situation. These include the price effects of reduced supply of both rented and owned housing and increased demand from both displaced residents and an influx of rebuild workers. The need for additional temporary housing while repairs were undertaken and the associated insurance pay-outs bidding up rents with improved rental returns leading to increased interest in property investment. Land supply constraints and consenting issues inhibiting the build of new housing and political infighting and uncertainty regarding the future of parts of the city leading to a flight of development activity to peripheral locations and adjoining local authorities. Concerns that the erosion of the city council rating base combined with inadequacy of insurance cover for infrastructure will lead to large rates increases, increased development costs and reduced amenities and services in future years. These and other issuers will be elaborated on in this paper with a view to exploring the way forward for affordable housing Christchurch City."

Articles, Christchurch uncovered

In previous blog posts we’ve touched upon the smells of 19th century Christchurch and how, in the absence of an organised sewerage and rubbish disposal system, early Christchurch was, at the best of times, a dirty old town. Inadequate drainage … Continue reading →

Articles, Christchurch uncovered

My passion is anything and everything to do with archaeology. So when I was given the opportunity to be an intern at Underground Overground Archaeology Ltd., I jumped at this chance of a lifetime! My name is Jessica Hofacher and … Continue reading →

Articles, Christchurch uncovered

Recording standing structures not only involves architectural drawings and photography, but can also be quite destructive. In an attempt to modernise an old house owners will often cover “old fashioned” features with new materials, plasterboard being the chief culprit. So, … Continue readin...

Research papers, University of Canterbury Library

Deformational properties of soil, in terms of modulus and damping, exert a great influence on seismic response of soil sites. However, these properties for sands containing some portion of fines particles have not been systematically addressed. In addition, simultaneous modelling of the modulus and damping behaviour of soils during cyclic loading is desirable. This study presents an experimental and computational investigation into the deformational properties of sands containing fines content in the context of site response analysis. The experimental investigation is carried on sandy soils sourced from Christchurch, New Zealand using a dynamic triaxial apparatus while the computational aspect is based on the framework of total-stress one-dimensional (1D) cyclic behaviour of soil. The experimental investigation focused on a systematic study on the deformational behaviour of sand with different amounts of fines content (particle diameter ≤ 75µm) under drained conditions. The silty sands were prepared by mixing clean sand with three different percentages of fines content. A series of bender element tests at small-strain range and stress-controlled dynamic triaxial tests at medium to high-strain ranges were conducted on samples of clean sand and silty sand. This allowed measurements of linear and nonlinear deformational properties of the same specimen for a wide strain range. The testing program was designed to quantify the effects of void ratio and fines content on the low-strain stiffness of the silty sand as well as on the nonlinear stress-strain relationship and corresponding shear modulus and damping properties as a function of cyclic shear strains. Shear wave velocity, Vs, and maximum shear modulus, Gmax, of silty sand was shown to be significantly smaller than the respective values for clean sands measured at the same void ratio, e, or same relative density, Dr. However, the test results showed that the difference in the level of nonlinearity between clean sand and silty sands was small. For loose samples prepared at an identical relative density, the behaviour of clean sand was slightly less nonlinear as compared to sandy soils with higher fines content. This difference in the nonlinear behaviour of clean sand and sandy soils was negligible for dense soils. Furthermore, no systematic influence of fines content on the material damping curve was observed for sands with fines content FC = 0 to 30%. In order to normalize the effects of fines on moduli of sands, equivalent granular void ratio, e*, was employed. This was done through quantifying the participation of fines content in the force transfer chain of the sand matrix. As such, a unified framework for modelling of the variability of shear wave velocity, Vs, (or shear modulus, Gmax) with void ratio was achieved for clean sands and sands with fines, irrespective of their fines content. Furthermore, modelling of the cyclic stress-strain behaviour based on this experimental program was investigated. The modelling effort focused on developing a simple constitutive model which simultaneously models the soil modulus and damping relationships with shear strains observed in laboratory tests. The backbone curve of the cyclic model was adopted based on a modified version of Kondner and Zelasko (MKZ) hyperbolic function, with a curvature coefficient, a. In order to simulate the hysteretic cycles, the conventional Masing rules (Pyke 1979) were revised. The parameter n, in the Masing’s criteria was assumed to be a function of material damping, h, measured in the laboratory. As such the modulus and damping produced by the numerical model could match the stress-strain behaviour observed in the laboratory over the course of this study. It was shown that the Masing parameter n, is strain-dependent and generally takes values of n ≤ 2. The model was then verified through element test simulations under different cyclic loadings. It was shown that the model could accurately simulate the modulus and the damping simultaneously. The model was then incorporated within the OpenSees computational platform and was used to scrutinize the effects of damping on one-dimensional seismic site response analysis. For this purpose, several strong motion stations which recorded the Canterbury earthquake sequence were selected. The soil profiles were modelled as semi-infinite horizontally layered deposits overlying a uniform half-space subjected to vertically propagating shear waves. The advantages and limitations of the nonlinear model in terms of simulating soil nonlinearity and associated material damping were further scrutinized. It was shown that generally, the conventional Masing criteria unconservatively may underestimate some response parameters such as spectral accelerations. This was shown to be due to larger hysteretic damping modelled by using conventional Masing criteria. In addition, maximum shear strains within the soil profiles were also computed smaller in comparison to the values calculated by the proposed model. Further analyses were performed to study the simulation of backbone curve beyond the strain ranges addressed in the experimental phase of this study. A key issue that was identified was that relying only on the modulus reduction curves to simulate the stress-strain behaviour of soil may not capture the actual soil strength at larger strains. Hence, strength properties of the soil layer should also be incorporated to accurately simulate the backbone curve.

Audio, Radio New Zealand

DAVID BENNETT to the Minister of Finance: How is the Government's economic programme supporting stronger regional job growth? Hon SHANE JONES to the Minister of Commerce: Is he aware of demands being made by the Countdown supermarket group for retrospective payments from New Zealand suppliers, with threats Countdown will not stock their products? JULIE ANNE GENTER to the Minister for Economic Development: Why is the Government holding up economic development in Auckland's CBD, according to Auckland City officials, by delaying the opening of the City Rail Link until 2025? ALFRED NGARO to the Minister for Social Development: What reports has she received about the state of the nation in relation to social outcomes? DENIS O'ROURKE to the Minister for Canterbury Earthquake Recovery: Is he aware of any proposals to transport asbestos-contaminated material from the Christchurch rebuild to sub-standard landfills? Hon ANNETTE KING to the Minister of Health: Is he satisfied New Zealanders are receiving timely and affordable healthcare? MARK MITCHELL to the Minister of Housing: What reports has he received on positive progress being advanced on the Government's housing agenda? DARIEN FENTON to the Minister of Labour: Does he agree with the Prime Minister's statement on the minimum wage that "I think we've been pretty fair in what we've done in the past and we probably will be in the future"? CLAUDETTE HAUITI to the Minister of Science and Innovation: How are the National Science Challenges bringing together the best scientific talent across New Zealand? HONE HARAWIRA to the Minister for Economic Development: Will he commit to spending the $41m on reducing child poverty, after signalling that he might not now give that money to Team New Zealand to compete in the next America's Cup? Dr RAJEN PRASAD to the Minister of Immigration: When he said in response to an oral question on 29 January 2014 that it was "a pretty simple process…to alert immigration authorities", what was his understanding of the process a complainant would go through? CHRIS AUCHINVOLE to the Associate Minister of Transport: What progress is being made in improving road safety?

Research papers, The University of Auckland Library

Though generally considered “natural” disasters, cyclones and earthquakes are increasingly being associated with human activities, incubated through urban settlement patterns and the long-term redistribution of natural resources. As society is becoming more urbanized, the risk of human exposure to disasters is also rising. Architecture often reflects the state of society’s health: architectural damage is the first visible sign of emergency, and reconstruction is the final response in the process of recovery. An empirical assessment of architectural projects in post-disaster situations can lead to a deeper understanding of urban societies as they try to rebuild. This thesis offers an alternative perspective on urban disasters by looking at the actions and attitudes of disaster professionals through the lens of architecture, situated in recent events: the 2010 Christchurch earthquake, the 2010 Haiti earthquake, and the 2005 Hurricane Katrina. An empirical, multi-hazard, cross-sectional case study methodology was used, employing grounded theory method to build theory, and a critical constructivist strategy to inform the analysis. By taking an interdisciplinary approach to understanding disasters, this thesis positions architecture as a conduit between two divergent approaches to disaster research: the hazards approach, which studies the disaster cycles from a scientific perspective; and the sociological approach, which studies the socially constructed vulnerabilities that result from disasters, and the elements of social change that accompany such events. Few studies to date have attempted to integrate the multi-disciplinary perspectives that can advance our understanding of societal problems in urban disasters. To bridge this gap, this thesis develops what will be referred to as the “Rittelian framework”—based on the work of UC Berkeley’s architecture professor Horst Rittel (1930-1990). The Rittelian framework uses the language of design to transcend the multiple fields of human endeavor to address the “design problems” in disaster research. The processes by which societal problems are addressed following an urban disaster involve input by professionals from multiple fields—including economics, sociology, medicine, and engineering—but the contribution from architecture has been minimal to date. The main impetus for my doctoral thesis has been the assertion that most of the decisions related to reconstruction are made in the early emergency recovery stages where architects are not involved, but architects’ early contribution is vital to the long-term reconstruction of cities. This precipitated in the critical question: “How does the Rittelian framework contribute to the critical design decisions in modern urban disasters?” Comparative research was undertaken in three case studies of recent disasters in New Orleans (2005), Haiti (2010) and Christchurch (2010), by interviewing 51 individuals who were selected on the basis of employing the Rittelian framework in their humanitarian practice. Contextualizing natural disaster research within the robust methodological framework of architecture and the analytical processes of sociology is the basis for evaluating the research proposition that architectural problem solving is of value in addressing the ‘Wicked Problems’ of disasters. This thesis has found that (1) the nuances of the way disaster agents interpret the notion of “building back better” can influence the extent to which architectural professionals contribute in urban disaster recovery, (2) architectural design can be used to facilitate but also impede critical design decisions, and (3) framing disaster research in terms of design decisions can lead to innovation where least expected. This empirical research demonstrates how the Rittelian framework can inform a wider discussion about post-disaster human settlements, and improve our resilience through disaster research.

Research papers, University of Canterbury Library

Structural engineering is facing an extraordinarily challenging era. These challenges are driven by the increasing expectations of modern society to provide low-cost, architecturally appealing structures which can withstand large earthquakes. However, being able to avoid collapse in a large earthquake is no longer enough. A building must now be able to withstand a major seismic event with negligible damage so that it is immediately occupiable following such an event. As recent earthquakes have shown, the economic consequences of not achieving this level of performance are not acceptable. Technological solutions for low-damage structural systems are emerging. However, the goal of developing a low-damage building requires improving the performance of both the structural skeleton and the non-structural components. These non-structural components include items such as the claddings, partitions, ceilings and contents. Previous research has shown that damage to such items contributes a disproportionate amount to the overall economic losses in an earthquake. One such non-structural element that has a history of poor performance is the external cladding system, and this forms the focus of this research. Cladding systems are invariably complicated and provide a number of architectural functions. Therefore, it is important than when seeking to improve their seismic performance that these functions are not neglected. The seismic vulnerability of cladding systems are determined in this research through a desktop background study, literature review, and postearthquake reconnaissance survey of their performance in the 2010 – 2011 Canterbury earthquake sequence. This study identified that precast concrete claddings present a significant life-safety risk to pedestrians, and that the effect they have upon the primary structure is not well understood. The main objective of this research is consequently to better understand the performance of precast concrete cladding systems in earthquakes. This is achieved through an experimental campaign and numerical modelling of a range of precast concrete cladding systems. The experimental campaign consists of uni-directional, quasi static cyclic earthquake simulation on a test frame which represents a single-storey, single-bay portion of a reinforced concrete building. The test frame is clad with various precast concrete cladding panel configurations. A major focus is placed upon the influence the connection between the cladding panel and structural frame has upon seismic performance. A combination of experimental component testing, finite element modelling and analytical derivation is used to develop cladding models of the cladding systems investigated. The cyclic responses of the models are compared with the experimental data to evaluate their accuracy and validity. The comparison shows that the cladding models developed provide an excellent representation of real-world cladding behaviour. The cladding models are subsequently applied to a ten-storey case-study building. The expected seismic performance is examined with and without the cladding taken into consideration. The numerical analyses of the case-study building include modal analyses, nonlinear adaptive pushover analyses, and non-linear dynamic seismic response (time history) analyses to different levels of seismic hazard. The clad frame models are compared to the bare frame model to investigate the effect the cladding has upon the structural behaviour. Both the structural performance and cladding performance are also assessed using qualitative damage states. The results show a poor performance of precast concrete cladding systems is expected when traditional connection typologies are used. This result confirms the misalignment of structural and cladding damage observed in recent earthquake events. Consequently, this research explores the potential of an innovative cladding connection. The outcomes from this research shows that the innovative cladding connection proposed here is able to achieve low-damage performance whilst also being cost comparable to a traditional cladding connection. It is also theoretically possible that the connection can provide a positive value to the seismic performance of the structure by adding addition strength, stiffness and damping. Finally, the losses associated with both the traditional and innovative cladding systems are compared in terms of tangible outcomes, namely: repair costs, repair time and casualties. The results confirm that the use of innovative cladding technology can substantially reduce the overall losses that result from cladding damage.

Research papers, The University of Auckland Library

Following the devastation of the Canterbury earthquake sequence a unique opportunity exists to rebuild and restructure the city of Christchurch, ensuring that its infrastructure is constructed better than before and is innovative. By installing an integrated grid of modern sensor technologies into concrete structures during the rebuild of the Christchurch CBD, the aim is to develop a network of self-monitored ‘digital buildings’. A diverse range of data will be recorded, potentially including parameters such as concrete stresses, strains, thermal deformations, acoustics and the monitoring of corrosion of reinforcement bars. This procedure will allow an on-going complete assessment of the structure’s performance and service life, both before and after seismic activity. The data generated from the embedded and surface mounted sensors will be analysed to allow an innovative and real-time health monitoring solution where structural integrity is continuously known. This indication of building performance will allow the structure to alert owners, engineers and asset managers of developing problems prior to failure thresholds being reached. A range of potential sensor technologies for monitoring the performance of existing and newly constructed concrete buildings is discussed. A description of monitoring work conducted on existing buildings during the July 2013 Cook Strait earthquake sequence is included, along with details of current work that investigates the performance of sensing technologies for detecting crack formation in concrete specimens. The potential market for managing the real-time health of installed infrastructure is huge. Civil structures all over the world require regular visual inspections in order to determine their structural integrity. The information recorded during the Christchurch rebuild will generate crucial data sets that will be beneficial in understanding the behaviour of concrete over the complete life cycle of the structure, from construction through to operation and building repairs until the time of failure. VoR - Version of Record

Research papers, Lincoln University

The disastrous earthquakes that struck Christchurch in 2010 and 2011 seriously impacted on the individual and collective lives of Māori residents. This paper continues earlier, predominantly qualitative research on the immediate effects on Māori by presenting an analysis of a survey carried out 18 months after the most destructive event, on 22 February 2011. Using a set-theoretic approach, pathways to Māori resilience are identified, emphasising the combination of whānau connectivity and high incomes in those who have maintained or increased their wellbeing post-disaster. However, the results show that if resilience is used to describe a “bounce back” in wellbeing, Māori are primarily enduring the post-disaster environment. This endurance phase is a precursor to any resilience and will be of much longer duration than first thought. With continued uncertainty in the city and wider New Zealand economy, this endurance may not necessarily lead to a more secure environment for Māori in the city.

Audio, Radio New Zealand

TE URUROA FLAVELL to the Minister of Conservation: Does he agree with Parliamentary Commissioner for the Environment, Dr Jan Wright, that joint decision-making with the Minister for Energy and Resources on mining the conservation estate undermines the role of the Minister of Conservation as guardian of that estate, and how will he respond to her advice to Parliament that conservation should take precedence? Hon DAVID CUNLIFFE to the Prime Minister: Does he stand by his statement that "for most New Zealanders an indicator of how well the economy is doing is whether or not they can keep up with the cost of living"; if so, is he satisfied that they currently can? Hon TAU HENARE to the Minister of Finance: What reports has he received on inequality in New Zealand, and how do recent changes in trends compare to other countries? Hon DAVID PARKER to the Minister of Finance: Does he agree with BERL that "outside of dairy and forestry, export receipts have effectively flatlined since April 2009" and that "The risks inherent in such a narrowing of our export base should be of concern to all"; if not, why not? Dr CAM CALDER to the Minister for Tertiary Education, Skills and Employment: What announcements has he made about the Māori and Pasifika Trades Training initiative? Dr RUSSEL NORMAN to the Prime Minister: Does he stand by all his Government's decisions? PAUL FOSTER-BELL to the Minister of Housing: What progress has he made with local government in securing Housing Accords under the legislation passed last year, and how are they increasing the supply and affordability of housing? Hon ANNETTE KING to the Minister of Health: What was the original forecast cost for Health Benefits Limited and what is the revised forecast cost now, if any? MAGGIE BARRY to the Minister of Education: What recent announcements has she made on the Government's $359 million investment to raise student achievement? Hon RUTH DYSON to the Minister for Canterbury Earthquake Recovery: How much has the Canterbury Earthquake Recovery Authority spent on legal fees in the last 3 years? DENIS O'ROURKE to the Minister of Transport: When will the Government provide a comprehensive and integrated land transport plan for New Zealand? PAUL GOLDSMITH to the Minister of Revenue: What is the objective of the Government's recently announced Taxpayer's Simplification Panel?

Videos, UC QuakeStudies

A video of interviews with residents of Carrick Street about the constant flooding. Babu Chatterji, Adam Smith, and Pip Thurlow are interviewed. The residents talk about how the increase in flooding since the earthquakes, how the flooding is affecting their lives, and the lack of help from the authorities.

Research papers, Lincoln University

To the casual observer, community gardens may look like places where people just come to grow fruit and vegetables. Through digging beneath surface appearances, however, the research literature suggests that there is more to the creation of and participation in community gardens than that which is immediately apparent. The overall aim of this research was to explore and interpret the meaning of community gardens in terms of the sought and experienced well-being of the individuals who participate, and their associated communities. This research was undertaken in the Christchurch/Selwyn district, in the aftermath of the Christchurch earthquakes of 2010-2011. This research utilised the technique of photo-elicitation interviews to study the meanings attributed to community gardening, in the post-earthquake environment. Five gardens were investigated. Results show that a range of meanings, and well-being outcomes are experienced through a combination of physical, educational, aesthetic appreciation, contemplative, creative and social connections within the garden and within the overall context of nature. Significantly, within the post-earthquake environment, the community gardens can offer participants the opportunity to appreciate life and what it means for them.

Research papers, Lincoln University

The coordination of actors has been a major focus for much of the research in the disaster relief humanitarian logistics discipline. While much of this literature focuses on the initial response phase, little has been written on the longer term recover phase. As the response phase transitions into the longer term recover phase the number and types of actors change from predominantly disaster relief NGOs to more commercial entities we argue that humanitarian values should still be part of the rebuild phase. It has been noted that humanitarian actors both cooperate and compete at the same time (Balcik, Beamon, Krejci, Muramatsu and Ramirez, 2010), in a form of behavior that can be described as ‘co-opetition’ (Nalebuff and Brandenburger, 1996). We use a case study approach to examine an organizational model used to coordinate civil and commercial actors for the rebuild of the civil infrastructure for Christchurch, New Zealand following a series of devastating earthquakes in 2010/11. For the rebuild phase we argue that ‘co-opetition’ is a key behaviour that allows the blending of humanitarian and commercial values to help communities rebuild to a new normal. While at this early stage our contribution is limited, we eventually hope to fully elaborate on an organisational model that has been created specifically for the tight coordination of commercial actors and its relevance to the rebuild phase of a disaster. Examining the behaviour of co-opetition and the structures that incentivise this behaviour offers insights for the humanitarian logistic field.