Investigating the Impacts of Building Importance Level and Ductile Design on the Performance of Base-Isolated Buildings in New Zealand
C. Dong, T.J Sullivan, 2023. Investigating the Impacts of Building Importance Level and Ductile Design on the Performance of Base-Isolated Buildings in New Zealand. Pacific Conference on Earthquake Engineering 2023, Vancouver, British Columbia.
Abstract
Preliminary seismic isolation design guidelines were recently released in New Zealand to provide both guidance for the design of base-isolated buildings and consistency in their performance. Seismic design in NZ requires selection of an Importance Level (IL1 – IL4) and the guidelines permit the use of strength reduction factors greater than one (i.e ductility greater than one). This study investigates the impacts of building importance level and superstructure ductility on isolated building performance in terms of structural response and collapse.