Earthquake response and structural health monitoring of Christchurch Women's Hospital following the Canterbury and Christchurch earthquakes

摘要

The September 2010 Canterbury and February 2011 Christchurch earthquakes and associatedaftershocks have shown that the isolator displacement in Christchurch Women's Hospital(Christchurch City's only base-isolated structure) was significantly less than expected. Occupantaccounts of the events have also indicated that the accelerations within the hospitalsuperstructure were larger than would usually be expected within a base-isolated structure andthat residual low-level shaking lasts for a longer period of time following the strong-motion of anevent than for non-isolated structures.