Title: Seismic Performance of Precast Hollow-Core Floors: Part 1—Experimental Data

Author(s): Samuel R. Corney, Aishwarya Y. Puranam, Kenneth J. Elwood, Richard S. Henry, and Des Bull

Publication: Structural Journal

Volume: 118

Issue: 5

Appears on pages(s): 49-63

Keywords: floor diaphragm; hollow-core floors; precast concrete; seismic testing

DOI: 10.14359//51732821

Date: 9/1/2021

Abstract:
The use of precast concrete hollow-core floors rose to prominence in New Zealand in the 1980s because of an economic boom at that time and the ease of construction. Their widespread use in New Zealand, a region with high seismicity, and observations made after the 1994 Northridge Earthquake prompted a comprehensive research program to better understand the behavior of hollow-core floors in earthquakes. A number of system-level and component-level tests were conducted and results from this research program helped understand vulnerabilities of hollow-core floor systems and led to improvements in design provisions in the New Zealand Concrete Standard. The research program also provided the basis for the development of a seismic assessment procedure for existing hollow-core floors described in a companion paper. A summary of this research program and key design provisions is presented in this paper.