Engineering assessment processes for Wellington buildings following the November 2016 Kaikōura earthquakes

  • Dave Brunsdon Kestrel Group, Wellington, New Zealand
  • Kenneth J. Elwood University of Auckland, Auckland, New Zealand
  • John Hare Holmes Consulting, Christchurch, New Zealand

Abstract

The 14 November 2016 Kaikōura earthquake resulted in long duration shaking in excess of the code demand for many buildings with fundamental periods between 1 and 2 seconds in Wellington, particularly in those parts of the city where shaking has been amplified due to basin effects and deeper deposits, notably in the port area or Thorndon basin.

This paper outlines the initial response of engineers and the engineering assessment processes undertaken in Wellington in the weeks following the Kaikōura Earthquake, along with the technical support provided to Wellington City Council through the establishment of the Critical Buildings Team and the Wellington Engineering Leadership Group. An overview is provided of the Targeted Assessment Programme subsequently undertaken by Wellington City Council to look more closely at the buildings most likely to be affected. Background is provided to the key elements of the Targeted Damage Evaluation Guidelines that were developed in support of this programme, including the relationship with the Detailed Engineering (Damage) Evaluation process used following the Canterbury Earthquake Sequence.

References

Bradley BA, Wotherspoon LM and Kaiser AE (2017). “Ground motion and site effect observations in the Wellington Region from the 2016 Mw7.8 Kaikoura, New Zealand earthquake”. Bulletin of the New Zealand Society for Earthquake Engineering, 50(2): 94-105.

Henry RS, Dizhur D, Elwood KJ, Hare J and Brunsdon D (2017). “Damage to Concrete Buildings with Precast Floors during the 2016 Kaikoura Earthquake”. Bulletin of the New Zealand Society for Earthquake Engineering, 50(2): 174-186.

MBIE (2014). “Field Guide: Rapid Post Disaster Building Assessment – Earthquakes”. https://www.building.govt.nz/managing-buildings/post-emergency-building-assessment/field-guides-and-tools-for-building-assessment/rapid-post-disaster-building-assessmentearthquake/

Woods RJ, McBride SK, Wotherspoon LM, Beavan S, Potter SH, Johnston DM, Wilson TM, Brunsdon D, Grace ES, Brackley H and Becker JS (2017). “Science to emergency management response: Kaikōura earthquakes 2016”. Bulletin of the New Zealand Society for Earthquake Engineering, 50(2): 329-337.

NZSEE & SESOC (2016). “Engineering Guidelines for Targeted Damage Evaluation following the November 2016 Kaikōura Earthquake.” www.sesoc.org.nz 41pp.

MBIE Engineering Advisory Group (2012). “Guidance on Detailed Engineering Evaluation of Earthquake Affected Non-residential Buildings in Canterbury”. www.sesoc.org.nz

MBIE (2017). “Investigation into the Performance of Statistics House in the 14 November 2016 Kaikōura Earthquake”. Report prepared by the Ministry of Business, Innovation and Employment, Wellington, New Zealand 36pp.

Kestrel Group (2017). “Wellington City Council Targeted Assessment Programme Following the Kaikōura Earthquake of 14 November 2016: Technical Report”. Kestrel Group, Wellington, New Zealand, 58 pp.

Published
2017-06-30
How to Cite
Brunsdon, D., Elwood, K. J., & Hare, J. (2017). Engineering assessment processes for Wellington buildings following the November 2016 Kaikōura earthquakes. Bulletin of the New Zealand Society for Earthquake Engineering, 50(2), 338-342. https://doi.org/10.5459/bnzsee.50.2.338-342
Section
Articles

Most read articles by the same author(s)