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.
Related References:
ACI Committee 318, 2014, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14),” American Concrete Institute, Farmington Hills, MI, 520 pp.
Brunsdon, D.; Hare, J.; and Elwood, K., 2017, “Engineering Assessment Processes for Wellington Buildings Following the November 2016 Kaikoura Earthquakes,” Bulletin of the New Zealand Society for Earthquake Engineering, V. 50, No. 2, pp. 338-342. doi: 10.5459/bnzsee.50.2.338-342
Bull, D., and Matthews, J., 2003, “Proof of Concept Tests for Hollow-Core Floor Unit Connections,” Dept. of Civil Engineering, University of Canterbury, Christchurch, New Zealand.
Bull, D. K., 1999, “Guidelines for the Use of Structural Precast Concrete in Buildings—Second Edition” Centre for Advanced Engineering, University of Canterbury, Chirstchurch, New Zealand.
Corney, S. R.; Elwood, K. J.; Henry, R. S.; and Nims, D. K., 2018a, “Assessment of Existing Concrete Buildings in Wellington with Precast Floors,” Natural Hazards Research Platform, New Zealand.
Corney, S. R.; Ingham, J. M.; and Henry, R. S., 2018b, “Seismic Testing of Support Connections in Deep Hollow- Core Floor Units,” ACI Structural Journal, V. 115, No. 3, May, pp. 735-748. doi: 10.14359/51702062
DBH, 2007, “Hollow Core Floor Overview Report,” Department of Building and Housing, Wellington, New Zealand.
Fenwick, R.; Bull, D.; and Gardiner, D., 2010, “Assessment of Hollow-Core Floors for Seismic Performance (2010-2),” Department of Civil and Natural Resources Engineering, University of Canterbury, Christchurch, New Zealand.
Herlihy, M. D., 1999, “Precast Concrete Floor Support and Diaphragm Action,” PhD thesis, University of Canterbury, Christchurch, New Zealand.
Iverson, J., and Hawkins, N., 1994, “Performance of Precast/Prestressed Concrete Building Structures during Northridge Earthquake,” Precast Concrete Institute (PCI), Journal Special Report, V. 39, No. 2, pp. 38-55.
Jensen, J., 2006, “The Seismic Behaviour of Existing Hollowcore Seating Connections Pre and Post Retrofit,” ME thesis, Department of Civil Engineering, University of Canterbury, Christchurch, New Zealand.
Liew, H. Y., 2004, “Performance of Hollowcore Floor Seating Connection Details,” ME thesis, Department of Civil Engineering, University of Canterbury, Christchurch, New Zealand.
Lindsay, R., 2004, “Experiments on the Seismic Performance of Hollow-Core Floor Systems in Precast Concrete Buildings,” ME thesis, Department of Civil Engineering, University of Canterbury, Christchurch, New Zealand.
MacPherson, C., 2005, “Seismic Performance and Forensic Analysis of Precast Concrete Hollow-Core Floor Super-Assemblage,” ME thesis, Department of Civil Engineering, University of Canterbury, Christchurch, New Zealand.
Matthews, J., 2004, “Hollow-Core Floor Slab Performance Following a Severe Earthquake,” PhD thesis, Department of Civil Engineering, University of Canterbury, Christchurch, New Zealand.
Meija-McMaster, J. C., 1994, “Precast Concrete Hollowcore Floor Unit Support and Continuity,” master’s thesis, University of Canterbury, Christchurch, New Zealand.
Norton, J. A.; King, A. B.; Bull, D. K.; Chapman, H. E.; McVerry, G. H.; Larkin, T. J.; and Spring, K. C., 1994, “Northridge Earthquake Reconnaissance Report,” Bulletin of the NZNSEE, V. 39, No. 4.
NZ Guideline, 2018, “Part C5: Technical Proposal to Revise the Engineering Assessment Guidelines,” http://www.eq-assess.org.nz/dsa-non-epb/.
Oliver, S. J., 1998, “The Performance of Concrete Topped Precast Hollow-Core Flooring Systems Reinforced with and without Dramix Steel Fibres under Simulated Seismic Loading,” master’s thesis, University of Canterbury, Christchurch, New Zealand.
Park, R., 2002, “Seismic Design and Construction of Precast Concrete Buildings in New Zealand,” PCI Journal, V. 60, No. 2, pp. 60-75. doi: 10.15554/pcij.09012002.60.75
Puranam, A. Y.; Corney, S. R.; Elwood, K. J.; Henry, R. S.; and Bull, D., 2021, “Seismic Performance of Precast Concrete Hollow-Core Floors: Part 2—Assessment of Existing Buildings,” ACI Structural Journal, V. 118, No. 5, Sept., 14 pp.
Standards New Zealand, 2002, “AS/NZS 1170.0: Structural design actions – Part 0: General principles,” Standards Australia/Standards New Zealand.
Standards New Zealand, 2004, “Concrete Structures Standard, NZS 3101:1995 Amendment 3,” Wellington, New Zealand.
Standards New Zealand, 2017, “Concrete Structures Standard, NZS 3101:2006 Amendment 3,” Wellington, New Zealand.
Trowsdale, J., 2004, “Seismic Performance of Hollowcore Seating Detail Specified by Amendment No 3 NZS 3101:1995,” final year project, University of Canterbury, Christchurch, New Zealand.
Woods, L., 2008, “The Significance of Negative Bending Moments in the Seismic Performance of Hollow-Core Flooring,” ME thesis, Department of Civil Engineering, University of Canterbury, Christchurch, New Zealand.