Investigations of Cavity Pressure Behaviors of Double-Skin Façade Systems Subjected to Blast Loads
Publication: Journal of Performance of Constructed Facilities
Volume 29, Issue 5
Abstract
The main function of a façade system is to provide comfort and protection to occupants inside the building. Glass façades are susceptible to severe damage due to their direct exposure to extreme loading conditions, such as blast. There is increasing popularity in the application of double-skin façade systems (DSFSs) in modern façade construction practice due to their high energy efficiency. In addition, when designed correctly, DSFSs exhibit a potentially higher capacity for blast resistance as opposed to single-layer façade systems. However, due to the complex fluid–structure interaction (FSI) between DSFSs and blast waves, there is a lack of design codes that address the structural response of DSFSs subjected to blast pressures. Understanding the behavior of the pressure within the DSFS cavity will facilitate the analysis of the blast performance of DSFSs. This paper reports an experimental program on analogical DSFSs made of steel as opposed to glazing panels, subjected to 250-kg equivalent TNT explosives at a standoff distance of 52 m. The test module contains three DSFS units. One of the DSFS units is sealed and the other two DSFS units are ventilated with a varying ventilation area. The computational fluid dynamics (CFD) code Air3D was used to simulate the cavity pressure behavior of the ventilated DSFS units. By analyzing the pressure time histories from the CFD analysis and the experimental results, the concepts of shock wave transfer and blast pressure ingress formed within the cavity were introduced to interpret the cavity pressure behaviors. A parametric study was conducted to investigate the influences of the ventilation area and the cavity volume on pressure changes within the cavity.
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Acknowledgments
This work was conducted with the financial support of the Australian Research Council (ARC) Linkage Grant LP110100429. The authors would also like to acknowledge the support of Permasteelisa Pty Ltd with the experimental program.
References
ASTM. (2004). “Standard practice for determining load resistance of glass in buildings.”, West Conshohocken, PA.
ASTM. (2012). “Standard practice for specifying an equivalent 3-second duration design loading for blast resistant glazing fabricated with laminated glass.”, West Conshohocken, PA.
Baker, W. E. (1960). “The elastic-plastic response of thin spherical shells to internal blast loading.” J. Appl. Mech., 27(1), 139–144.
Baker, W. E., Cox, P. A., Westine, P. S., Kulesz, J. J., and Strehlow, R. A. (1983). Explosion hazards and evaluation, Elsevier Scientific, New York.
Bogosian, D., and Fu, S. (2004). “Infiltration of airblast into buildings through glazed openings.” Proc., 31st Explosives Safety Seminar, Chemical Propulsion Information Agency (CPIA), Columbia, MD.
Committee BD-007. (2006). “Glass in buildings—Selection and installation.”, Sai Global, Sydney, NSW, Australia.
Ding, C., Ngo, T., Lumantarna, R., Mendis, P., and Zobec, M. (2013). “Structural performance of double skin facade systems (DSFS) subjected to blast pressures.” Proc., 10th Int. Conf. on Shock & Impact Loads on Structures, CI-Premier Pte, Singapore.
Dragos, J., Wu, C., and Oehlers, D. J. (2013). “Simplification of fully confined blasts for structural response analysis.” Eng. Struct., 56(1), 312–326.
Gratia, E., and Herde, A. D. (2004). “Natural cooling strategies efficiency in an office building with a double-skin façade.” Energy Build., 36(11), 1139–1152.
Gratia, E., and Herde, A. D. (2007). “Greenhouse effect in double-skin façade.” Energy Build., 39(2), 199–211.
Gregory, F. H. (1976). “Analysis of the loading and response of a suppressive shield when subjected to an internal explosion.” Minutes of 17th Explosive Safety Seminar, Dept. of Defense Explosives Safety Board (DDESB), Washington, DC.
Kingery, C. N., Schumacher, R. N., and Ewing, W. O. (1975). “Internal pressures from explosions in suppressive structures.”, Aberdeen Proving Ground, Aberdeen, MD.
Lou, W., Huang, M., Zhang, M., and Lin, N. (2012). “Experimental and zonal modeling for wind pressures on double-skin facades of a tall building.” Energy Build., 54(1), 179–191.
Manz, H., and Frank, T. (2005). “Thermal simulation of buildings with double-skin façades.” Energy Build., 37(11), 1114–1121.
Mohotti, D., Lunmantarna, R., Ngo, T., and Mendis, P. (2010). “Improving the safety of buildings through an innovative sustainable façade system.” Proc., Int. Conf. on Sustainable Built Environments, Univ. of Melbourne, Melbourne, Australia.
Rose, T. A. (2006). “A computational tool for airblast calculations.” Air3D version 9 users’ guide, Engineering Systems Dept., Cranfield Univ., Swindon, U.K.
U.S. Army Corps of Engineers (USACE). (2008). “Structures to resist the effects of accidental explosions.”, Unified Facilities Criteria (UFC), Washington, DC.
Information & Authors
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Published In
Journal of Performance of Constructed Facilities
Volume 29 • Issue 5 • October 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Mar 20, 2014
Accepted: Aug 11, 2014
Published online: Sep 8, 2014
Discussion open until: Feb 8, 2015
Published in print: Oct 1, 2015
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