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Leaders:  Liam Wotherspoon (l.wotherspoon@auckland.ac.nz) and  Tim Sullivan (timothy.sullivan@canterbury.ac.nz) 


Opportunity

The resilience of vertical infrastructure (residential, commercial and industrial buildings) and horizontal infrastructure networks (electric power, transportation, telecommunications, three waters, and liquefied/gas fuels) play a significant role in everyday society. Following a shock natural hazard event, they play a critical role in the ability of society to rapidly recover. This research, founded by Resilience to Nature Challenges (http://resiliencechallenge.nz/), will result in the development of improved approaches for the design and assessment of the built environment, new tools to quantify the performance of the built environment and better quantification of the interaction between different components of the built environment. These developments will inform actions that can reduce the direct and indirect impacts during future natural hazard events. High resolution modelling across a range of regions and natural hazard will provide an evidence base to inform the breadth of resilience strategies that can be operationalised through asset management and loss estimation methodologies.

Thrust Ares

The RNC research key thrust areas are: 

  1. Developing toolboxes upon the outcomes of the RNC1 project to accurately model and assess the seismic performance of spatially (horizontally) distributed infrastructure components.
  2. Developing improved design, assessment, and repairability approaches to manage and mitigate the financial risk posed by earthquakes.
  3. Developing advanced modelling methods to investigate the seismic performance of built environment (Wellington region) in response to major subduction zone rupture. 
Thrust AresTasks


Horizontal Infrastructure

  1. Models for infrastructure component performance across a range of natural hazards.
2. Expanded geographic coverage and capabilities of infrastructure network models.
3. High resolution regional and urban interdependency models.
4. Decision making and rating tools for infrastructure.



Vertical Infrastructure

  1. Execution of a broad benchmarking study to clearly define the seismic performance, in terms of expected annual monetary losses due to direct repair costs, of various code-compliant building typologies in different parts of New Zealand.
2. Development of tools and guidelines to quantify the reparability of buildings. In particular, steps will be made to establish improved criteria for repair versus replacement of steel structures in post-earthquake scenarios.
3. Development of new guidance for the assessment and rehabilitation of earthquake-damaged reinforced concrete structures.
4. Development of tools to account for soil-foundation-structure interaction effects on building performance. 
5. Identification, for marae, of effective resilience interventions and decision making processes against natural hazards.


Integrated Scenario

  1. Physical damage to vertical infrastructure: shaking damage to commercial buildings via detailed analysis and the smart seismic cities concept, co-seismic landslide damage to residential housing, geotechnical mass movements and shaking-induced damage to waterfront structures, damage to port and structures due to tsunami inundation.
2. Physical damage to horizontal infrastructure: damage to lifeline structures from shaking, co-seismic geohazards and tsunami, quantification of interdependencies across affected area. 
3. City-wide integration of effects: building-infrastructure interdependencies, direct cost estimation, assessment of alternate built environment realisations.


Monthly RNC Meetings

If you would like to participate in the monthly web conference, please contact the project leaders. You can attend the web conference through (https://canterbury.zoom.us/j/533567362).


27th November 2019

  1. Introduction and overview of RNC2 (Presentation)
  2.  Project summaries (with presenter name in brackets):
    1. Marae engineering resilience interventions and decision making (Tūmanako)
    2. Tsunami loadings on New Zealand structures (Toma)
    3. Benchmarking the risk of code-compliant buildings (Sullivan)
    4. Post-Earthquake Decision Criteria for Steel Buildings (MacRae)
    5. Rehabilitation of damaged RC structures (Pujol)
    6. Development of guidelines to account for soil-structure interaction (Millen/Cubrinovski)
    7. Reducing economic losses in NZS3604 light timber famed houses (Li)
    8. Reconsidering Design Criteria for the Serviceability Limit State (Sullivan) (Presentation)
    9. Wellington building stock seismic modelling with identification of effective retrofit strategies (Elwood/Stephens)
  3. Reporting and contracting
  4. Closing discussion and date for next meeting

30th January 2020

  1. Welcome and brief introductions of new group members
  2. Distribution of presentation and project description files – possible wiki page.
  3. Reminder to seek co-funding/scholarships as part of a team approach.
  4. Brief updates on progress from each of the research strands:
    1. Marae engineering resilience interventions and decision making (Fa’aui)
    2. Tsunami loadings on New Zealand structures (Toma)
    3. Benchmarking the risk of code-compliant buildings (Sullivan)
    4. Post-Earthquake Decision Criteria for Steel Buildings (MacRae)
    5. Rehabilitation of damaged RC structures (Pujol)
    6. Development of guidelines to account for soil-structure interaction (Millen/Cubrinovski)
    7. Reducing economic losses in NZS3604 light timber famed houses (Li)
    8. Reconsidering Design Criteria for the Serviceability Limit State (Sullivan)
    9. Wellington building stock seismic modelling with identification of effective retrofit strategies (Elwood/Stephens)
    10. Re-examination of the structural performance factor (Chandramohan)
  5. Deliverables plan
  6. Running Python in OPENSEES (Millen)

19th March 2020

  1. Welcome and overall update – including request for progress report (Tim Sullivan)
  2. Evaluation, Retrofit and Repair of Elements Vulnerable to Shear Failure (Santiago Pujol)
  3. Building Stock Model – Current and Future States of Assessment (Amin/Max Stephens)
  4. Ground motion simulation and validation of subduction zone earthquakes in New Zealand (Brendon Bradley)
  5. Additional discussion

  6. Closing remarks.




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