In-Plane Drift Capacity of Contemporary Point Fixed Glass Facade Systems
Publication: Journal of Architectural Engineering
Volume 20, Issue 1
Abstract
The point fixed glass facade system (PFGFS), also known as a spider glass system, is popular because it is the most transparent facade system available for buildings. The glass facade system is fixed to the support structure at minimal points using bolts and spider arms. Generally, the racking performance of these systems is not considered at the design stage. The facade system will be vulnerable to racking actions mainly during severe earthquakes and wind actions if the system does not have sufficient in-plane drift capacity. A unique real-scale in-plane racking laboratory test on a typical PFGFS was conducted to assess the in-plane racking performance. A maximum drift of 2.1% was measured, which was much larger than initially anticipated because of the rigid-body articulation of the system and higher than typical maximum allowable interstory drift for buildings in regions of lower seismicity. A sophisticated nonlinear finite-element (FE) model was developed and conservatively benchmarked against the experimental results with excellent correlation. The FE analyses showed that a significant amount of the drift capacity was attributed to the rigid-body translation at the built-in oversize holes for construction tolerances provided in the facade system connections. In this paper, the laboratory test setup and experimental results are discussed together with the confirmatory FE analysis results.
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Acknowledgments
Support funding by the Australian Research Council through “Collapse Modelling of Soft-Storey Buildings” (DP0772088) is gratefully acknowledged. The authors are very grateful to the Australian Earthquake Engineering Society for a financial contribution toward the testing program; the industry sponsors, Australian Glass Assemblies and Viridian World Glass, for supplying the spider arm fittings and glass panels; Dr. David Heath for his assistance with the photogrammetry measurement; and Melbourne Testing Services for assistance with the testing.
References
ANSYS 12 [Computer software]. Canonsburg, PA, ANSYS.
ASCE. (2010). “Minimum design loads for buildings and other structures.” ASCE 7-10, Reston, VA.
Austrials 7 [Computer software]. Melbourne, VIC, Australia, Photometrix.
Behr, R. A. (1998). “Seismic performance of architectural glass in mid-rise curtain wall.” J. Archit. Eng., 94–98.
Behr, R. A., and Belarbi, A. (1996). “Seismic test methods for architectural glazing systems.” Earthquake Spectra, 12(1), 129–143.
Behr, R. A., Belarbi, A., and Brown, A. T. (1995). “Seismic performance of architectural glass in a storefront wall system.” Earthquake Spectra, 11(3), 367–391.
Bondi, S., and McClelland, N. (2009). “Capturing structural silicone non-linear behaviour via the finite element method.” Proc., 11th Int. Conf., Glass Performance Days (GPD), Tampere, Finland, 183–185.
Gowda, B., and Heydari, N. (2010). “High displacement glass seismic systems.” Pract. Period. Struct. Des. Constr., 170–176.
Memari, A. M., Behr, R. A., and Kremer, P. A. (2003). “Seismic behavior of curtain walls containing insulating glass units.” J. Archit. Eng., 70–85.
Memari, A. M., Behr, R. A., and Kremer, P. A. (2004). “Dynamic racking crescendo tests on architectural glass fitted with anchored pet film.” J. Archit. Eng., 5–14.
Saflex Solutia Architectural Glazing (SSAG). (2007). “Glazing systems: Performance under seismic conditions.” Saflex Solutia Architectural Glazing, St. Louis.
Sivanerupan, S. (2011). “In-plane seismic performance of glass facade systems.” Ph.D. thesis, Swinburne Univ. of Technology, Hawthorn, VIC, Australia.
Sivanerupan, S., Wilson, J. L., and Gad, E. F. (2011). “Structural analysis and design of glazed curtain wall systems.” Aust. J. Struct. Eng., 12(1), 57–68.
Standards Australia (SA). (2006). “Glass in buildings–Selection and installation.” AS 1288, Sydney, NSW, Australia.
Information & Authors
Information
Published In
Journal of Architectural Engineering
Volume 20 • Issue 1 • March 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jul 17, 2012
Accepted: Mar 26, 2013
Published online: Apr 1, 2013
Published in print: Mar 1, 2014
Discussion open until: May 4, 2014
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