Performance of the base-isolated Christchurch women's hospital in the Sep. 4 2010 Dar field earthquake and the Feb.22 2011 Christchurch earthquake

Published

Journal Article

The Christchurch Women's Hospital, completed in March 2005, is the only base-isolated building in the South Island of New Zealand. The displacement capacity of the base-isolation system and the super-structure ductility capacity are designed to meet 2000-year return-period demands. Detailed structural evaluations after the 2010 Darfield Earthquake and the 2011 Christchurch Earthquake revealed damage only to sacrificial non-structural components at the seismic gaps. Because the structure was not instrumented at the time of these earthquakes, basic design information, ground motion records from nearby sites, and first-hand accounts of the motion in the structure are used to estimate the responses to the main shock and a large after-shock. Results from this modeling effort are used to corroborate reports of structural response from staff present at the time of the main shock and aftershocks. Subsequent instrumentation of the structure is described and will be used to collect aftershock responses for validation of numerical models. © 2012 ASCE.

Full Text

Duke Authors

Cited Authors

  • Gavin, HP; Nigbor, RL

Published Date

  • September 17, 2012

Published In

  • 20th Analysis and Computation Specialty Conference Proceedings of the Conference

Start / End Page

  • 554 - 563

Digital Object Identifier (DOI)

  • 10.1061/9780784412374.049

Citation Source

  • Scopus