Demolition halted
The BNZ building in Cathedral Square.
The BNZ building in Cathedral Square.
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This will open up the street to the Avon River
Broken windows on the top level of the BNZ building.
A close up of the top level of the BNZ building.
A crane stands next to the Millennium Hotel and the BNZ building.
The Chalice in Cathedral Square. The BNZ building is in the background on the right.
A video of a tour through the Christchurch central city Red Zone. The video includes footage of the Hotel Grand Chancellor, Victoria Square, the Forsyth Barr building, Colombo Street, Gloucester Street, Cathedral Square, the BNZ building, Cashel Mall, and the Kathmandu store on High Street.
The Chalice in Cathedral Square. A red crane and the BNZ building can be seen in the background.
The Chalice sculpture stands behind a cordon fence. The Millennium Hotel and the BNZ building are in the background.
The damaged New Regent Street facades. Scaffolding has been placed under the awnings. The BNZ building on Armargh Street can be seen in the background.
The Chalice in Cathedral Square with a crane and the BNZ building in the background. A pile of rubble can be seen on the left.
Members of the public walk past the damaged New Regent Street facades. The street has been cordoned off by security fences. The BNZ building on Armargh Street can be seen in the background.
Members of the public walk past the damaged New Regent Street facades. The street has been cordoned off by security fences. The BNZ building on Armargh Street can be seen in the background.
Members of the public walk past the damaged New Regent Street facades. The street has been cordoned off by security fences. The BNZ building on Armargh Street can be seen in the background.
A video of a tour of the Christchurch central city Red Zone. The video includes footage of Cambridge Terrace, the Copthorne Hotel on Colombo Street, Gloucester Street, the Government Life Building in Cathedral Square, the Grant Thornton Building in Cathedral Square, the ChristChurch Cathedral, the new Press Building on Gloucester Street, the Design and Arts College building on Worcester Street, the new Westende Jewellers Building, Hereford Street, the Westpac Trust Building, the BNZ Building, the Holiday Inn, Lichfield Street, High Street, and Cathedral Junction.
A panoramic photograph taken at the front of Christ Church Cathedral. The front of the cathedral has steel bracing against it to limit further damage. The upper part of the front wall has crumbled completely, exposing the inside space. The Chalice sculpture is to the right and the BNZ building can be seen in the background.
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A CERA information sign on the fence in the Cathedral Square placed to provide information for the public about the buildings seen from Cathedral Square. This one says "BNZ Building: This is a dangerous building. The demolition will begin in the New Year. Once the demolition begins walking access will not be able to continue into Cathedral Square. Plans are currently underway to retrieve tenants' essential items".
Rapid, reliable information on earthquake-affected structures' current damage/health conditions and predicting what would happen to these structures under future seismic events play a vital role in accelerating post-event evaluations, leading to optimized on-time decisions. Such rapid and informative post-event evaluations are crucial for earthquake-prone areas, where each earthquake can potentially trigger a series of significant aftershocks, endangering the community's health and wealth by further damaging the already-affected structures. Such reliable post-earthquake evaluations can provide information to decide whether an affected structure is safe to stay in operation, thus saving many lives. Furthermore, they can lead to more optimal recovery plans, thus saving costs and time. The inherent deficiency of visual-based post-earthquake evaluations and the importance of structural health monitoring (SHM) methods and SHM instrumentation have been highlighted within this thesis, using two earthquake-affected structures in New Zealand: 1) the Canterbury Television (CTV) building, Christchurch; 2) the Bank of New Zealand (BNZ) building, Wellington. For the first time, this thesis verifies the theoretically- and experimentally validated hysteresis loop analysis (HLA) SHM method for the real-world instrumented structure of the BNZ building, which was damaged severely due to three earthquakes. Results indicate the HLA-SHM method can accurately estimate elastic stiffness degradation for this reinforced concrete (RC) pinched structure across the three earthquakes, which remained unseen until after the third seismic event. Furthermore, the HLA results help investigate the pinching effects on the BNZ building's seismic response. This thesis introduces a novel digital clone modelling method based on the robust and accurate SHM results delivered by the HLA method for physical parameters of the monitored structure and basis functions predicting the changes of these physical parameters due to future earthquake excitations. Contrary to artificial intelligence (AI) based predictive methods with black-box designs, the proposed predictive method is entirely mechanics-based with an explicitly-understandable design, making them more trusted and explicable to stakeholders engaging in post-earthquake evaluations, such as building owners and insurance firms. The proposed digital clone modelling framework is validated using the BNZ building and an experimental RC test structure damaged severely due to three successive shake-table excitations. In both structures, structural damage intensifies the pinching effects in hysteresis responses. Results show the basis functions identified from the HLA-SHM results for both structures under Event 1 can online estimate structural damage due to subsequent Events 2-3 from the measured structural responses, making them valuable tool for rapid warning systems. Moreover, the digital twins derived for these two structures under Event 1 can successfully predict structural responses and damage under Events 2-3, which can be integrated with the incremental dynamic analysis (IDA) method to assess structural collapse and its financial risks. Furthermore, it enables multi-step IDA to evaluate earthquake series' impacts on structures. Overall, this thesis develops an efficient method for providing reliable information on earthquake-affected structures' current and future status during or immediately after an earthquake, considerably guaranteeing safety. Significant validation is implemented against both experimental and real data of RC structures, which thus clearly indicate the accurate predictive performance of this HLA-based method.
The 48hr Design Challenge, run by the Christchurch City Council and held at Lincoln University, provided an opportunity for Council to gain inspiration from the design and architecture industry, while testing the draft Central City Plan currently being developed. The Challenge was a response to the recent earthquakes in Christchurch and brought together local and international talent. A total of 15 teams took part in the Challenge, with seven people in each including engineers, planners, urban designers, architects and landscape architects, as well as one student on each team. The four sites within the Red Zone included the Cathedral Square and BNZ Building; 160 Gloucester Street; the Orion NZ Building at 203 Gloucester Street; and 90 Armagh Street, including the Avon River and Victoria Square. The fifth site, which sits outside the Red Zone, is the former Christchurch Women’s Hospital at 885 Colombo Street. This is team SoLA's entry for 160 Gloucester Street.
Hon DAVID PARKER to the Minister of Finance: Does he accept the BNZ statement that New Zealand’s increasing current account is “a very clear risk for New Zealand’s credit rating with Standard and Poor’s”? SHANE ARDERN to the Minister of Finance: What reports has he received on the economy? KEVIN HAGUE to the Minister for ACC: Can she confirm that staff in ACC’s Recovery Independence Service teams receive more or less remuneration dependent on whether the proportion of people receiving weekly compensation is less or more than specified duration targets? Hon DAVID CUNLIFFE to the Minister for Economic Development: Does he stand by all his recent statements? JAMI-LEE ROSS to the Minister of Police: What actions has the Government taken against illegal street racers? Hon MARYAN STREET to the Minister of Health: Has he received any reports or correspondence regarding the Community Pharmacy Services Agreement with District Health Boards and if he has, have they caused him any concern? TIM MACINDOE to the Minister of Justice: How is the Justice sector contributing to the Government’s better public services programme? GARETH HUGHES to the Minister for Climate Change Issues: Does he agree with the statement made by the Minister for the Environment, Hon Amy Adams in Rio, that, “Money spent on fossil fuels is money that could be spent on other sustainable development priorities”, and will the Government re-allocate the $889 million for ETS credits in Budget 2012 towards sustainable projects and a green economy? MIKE SABIN to the Minister of Immigration: What reports has he received on the benefits to New Zealand of the Recognised Seasonal Employer scheme? KRIS FAAFOI to the Minister of Police: Does she stand by all the statements she made to the Law and Order Committee yesterday? NICKY WAGNER to the Minister for Courts: What recent announcements has he made regarding court services for Christchurch? DENIS O'ROURKE to the Minister for Canterbury Earthquake Recovery: Does he still believe that the best way to deal with the price increase in home rentals in Christchurch is to leave it to the market?