OPEN ACCESS
Glazing facades are widely used in building structures, due to a series of aesthetic, thermal, lightening aspects. From a structural point of view, under the action of exceptional loads as impacts, explosions, seismic events or hazards in general, the glazing envelopes often represent the critical component for multi-storey buildings, due to the typically brittle behaviour and limited tensile resistance of the glass panes, hence requiring specific, fail-safe design concepts. In this paper, the feasibility and potential of special mechanical connectors interposed at the interface between a given multi-storey primary building structure and the glazing facade are investigated via accurate finite-element numerical models, under various impact scenarios. As shown, the final result is an assembled structural system in which the facade can work as passive control system for the primary structure, in the form of a distributed tuned-mass damper (TMD).
blast scenarios and hazards, dissipative devices, Finite-Element numerical models, glazing curtain walls, multi-storey buildings, passive structural control, tuned-mass dampers (TMDs).
[1] Larcher, M., Arrigoni, M., Bedon, C., Van Doormaal, A., Haberacker, C., Hüsken, G., Millon, O., Saarenheimo, A., Solomos, G., Thamie, L., Valsamos, G., Williams, A. & Stolz, A., Design of blast-loaded glazing windows and facades: a review of essential requirements towards standardization. Advances in Civil Engineering, 2016, Article ID. 2604232, pp. 14, 2016. https://doi.org/10.1155/2016/2604232
[2] EN 1998-1-1. Eurocode 8 – Design of structures for earthquake resistance – Part 1: General rules, seismic actions and rules for buildings. CEN, Brussels, Belgium, 2004.
[3] FEMA 450. Recommended provisions for seismic regulations for new buildings and other structures, 2003.
[4] ISO 16933:2007/Cor1:2008, Glass in building - Explosion-resistant security glazing - Test and classification for arena air-blast loading, 2008.
[5] GSA-TS01. Standard test method for glazing and window systems subject to dynamic overpressure loadings. US General Services Administration, 2003.
[6] Moon, K.S., Vertically distributed multiple tuned mass dampers in tall buildings: performance analysis and preliminary design. The Structural Design of Tall and Special Buildings, 19, pp. 347–366, 2010. https://doi.org/10.1002/tal.499
[7] Bedon, C. & Amadio, C., Exploratory numerical analysis of two-way straight cable-net facades subjected to air blast loads. Engineering Structures, 79, pp. 276–289, 2014. https://doi.org/10.1016/j.engstruct.2014.08.023
[8] Amadio, C. & Bedon, C., Viscoelastic spider connectors for the mitigation of cablesupported facades subjected to air blast loading. Engineering Structures, 42, pp. 190–200, 2012. https://doi.org/10.1016/j.engstruct.2012.04.023
[9] Bedon, C. & Amadio, C., Passive control systems for the blast enhancement of glazing curtain walls under explosive loads. The Open Civil Engineering Journal, 10, pp. 3–26, 2016.
[10] Park, S.W., Analytical modeling of viscoelastic dampers for structural and vibration control. International Journal of Solids and Structures, 38(44–45), pp. 8065–8092, 2000.
[11] Xiaoming, C., Jin, D. & Yungui, L., Mass proportional damping in nonlinear timehistory analysis. Proceeding of 3rd IC3ME2015, June 27–28, Guangzhou, China, 2015.
[12] Alipour, A. & Zareian, F., Study Rayleigh damping in structures – Uncertainties and treatments. Proceedings 14th WCEE, October 12–17, Beijing, China, 2008.
[13] Chopra, A.K., Dynamics of Structures – Theory and Applications to Earthquake Engineering, 4th ed., Prentice Hall, Upper Saddle River, New Jersey, 2011.
[14] Systèmes Dassault. ABAQUS v. 6.12, Providence, RI, 2013.
[15] Bedon, C., Amadio, C. & Sinico, A., Numerical and analytical investigation on the dynamic buckling behavior of glass columns under blast. Engineering Structures, 79, pp. 322–340, 2014. https://doi.org/10.1016/j.engstruct.2014.08.024