Advertisement

The flexural response of large scale steel-framed composite glazing panels

  • Carlos PascualEmail author
  • Shelton Nhamoinesu
  • Mauro Overend
Brief report
  • 64 Downloads

Abstract

Novel composite glazing panels provide an opportunity to significantly reduce the weight and depth of glazed facades and simultaneously minimize the visual and spatial bulkiness of conventional facade framing systems. However the mechanical response of these novel composite glazing panels is poorly understood and there is no published data on the flexural response of large scale panels. In this research, medium scale (700-mm long and 300-mm wide) and large scale (3500-mm long and 1500-mm wide) composite glazing panels were fabricated and tested in bending up to failure. Recently developed analytical model for composite sandwich panels was also implemented on the medium and large scale panels. The experimental test data shows that shear-lag effects can be significant in large scale panels and can reduce their effective widths by about 40%. The analytical model provided a good fit of experimental results when the effective width was reduced according to strain gauge measurements. Neglecting shear-lag effect is unsafe and would underestimate deflections and stresses by approximately 40%. Further research is required to quantify the shear-lag effects, and the corresponding variation of effective widths, along the length of composite glazing panels and the influence of load distribution and boundary conditions on the effective thickness of the glass panels.

Keywords

Adhesively-bonded sandwich structure Composite action Composite glazing panel Glass Shear lag 

Notes

Acknowledgements

The authors would like to thank the Engineering and Physical Sciences Research Council (United Kingdom) for the financial support of the project with two Grants EP/MO 17699/1 and EPSRC IAA Follow-on Fund, and Tata Steel and Permasteelisa S.p.A. for the financial support and in kind support of this research.

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

References

  1. Bedon, C., Pascual, C., Luna-Navarro, A., Overend, M., Favoino, F.: Thermo-mechanical investigation of novel GFRP-glass sandwich facade components. In: Proceedings of Challenging Glass Conference, vol. 6, pp. 501–512. Delft (2018)Google Scholar
  2. Belis, J., Van Hulle, A., Out, B., Bos, F., Callewaert, D., Poulis, H.: Broad screening of adhesives for glass-metal bonds. In: Proceedings of Glass Performance Days 2011, pp. 286–289, Tampere (2011)Google Scholar
  3. BS EN 10305-3:2010: Steel tubes for precision applications. Technical delivery conditions. Welded cold sized tubes. British Standards Institution, London (2010)Google Scholar
  4. BS EN 12150-2: 2004: Glass in building. Thermally toughened soda lime silicate safety glass. Evaluation of conformity/Product standard. British Standards Institution, London (2004a)Google Scholar
  5. BS EN 1863-2:2004: Glass in building. Heat strengthened soda lime silicate glass. Evaluation of conformity. Product standard. British Standards Institution, London (2004b)Google Scholar
  6. BS EN 1994-1-1:2004: Eurocode 4. Design of composite steel and concrete structures. General rules and rules for buildings. British Standards Institution, London (2004c)Google Scholar
  7. BS EN 572-2:2012: Glass in building. Basic soda lime silicate glass products. Float glass. British Standards Institution, London (2012)Google Scholar
  8. BS prEN 16612:2017: Glass in building - Determination of the lateral load resistance of glass panes by calculation. British Standards Institution, London (2017)Google Scholar
  9. Cordero, B.: Unitised curtain wall with low thermal transmittance frame integrated within the insulating glass unit through structural adhesives. PhD dissertation. Universidad Politécnica de Madrid, Madrid (2015)Google Scholar
  10. Correia, J., Valarinho, L., Branco, F.: Post-cracking strength and ductility of glass-GFRP composite beams. Compos. Struct. 93(9), 2299–2309 (2011)CrossRefGoogle Scholar
  11. Galuppi, L., Manara, G., Royer Carfagni, G.: Practical expressions for the design of laminated glass. Compos. Part B 45(1), 1677–1688 (2013)CrossRefGoogle Scholar
  12. Haldimann, M., Luible, A., Overend, M.: Structural Use of Glass. IABSE, Zurich (2008)Google Scholar
  13. Martens, K., Caspeele, R., Belis, J.: Development of composite glass beams—a review. Eng. Struct. 101, 1–15 (2015)CrossRefGoogle Scholar
  14. Nhamoinesu, S.: Steel–Glass Composite Panels. PhD dissertation. University of Cambridge, Cambridge (2015)Google Scholar
  15. Overend, M., Jin, Q., Watson, J.: The selection and performance of adhesives for a steel–glass connection. Int. J. Adhes. Adhes. 31(7), 587–597 (2011)CrossRefGoogle Scholar
  16. Overend, M., Zammit, K.: A computer algorithm for determining the tensile strength of float glass. Eng. Struct. 45, 68–77 (2012)CrossRefGoogle Scholar
  17. Pascual, C., Montali, J., Overend, M.: Adhesively-bonded GFRP-glass sandwich components for structurally efficient glazing applications. Compos. Struct. 160, 560–573 (2017a)CrossRefGoogle Scholar
  18. Pascual, C., Nhamoinesu, S., Overend, M.: Mechanically efficient and structurally slim vision panels. In: Proceedings of Glass Performance Days 2017, pp. 37–41, Tampere (2017b)Google Scholar
  19. Peters, S.: Kleben von GFK und Glas fur baukonstruktive Anwendungen. PhD dissertation. Universitat Stuttgart, Stuttgart (2006)Google Scholar
  20. Saflex: Technical Data Sheet. https://www.saflex.com/products/saflex-clear-pvb-interlayer (2018). Accessed 14 December 2018
  21. Tsui, B.: Glass Composite Struts. MEng dissertation. University of Cambridge, Cambridge (2017)Google Scholar
  22. Valarinho, L., Correia, J., Branco, F.: Experimental study on the flexural behaviour of multi-span transparent glass-GFRP composite beams. Constr. Build. Mater. 49, 1041–1053 (2013)CrossRefGoogle Scholar
  23. Wurm, J.: Glass structures: design and construction of self-supporting skins. Birkhauser, Basel (2007)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Carlos Pascual
    • 1
    Email author
  • Shelton Nhamoinesu
    • 2
  • Mauro Overend
    • 1
  1. 1.Glass and Facade Technology Research Group, Department of EngineeringUniversity of CambridgeCambridgeUK
  2. 2.Wintech Façade Engineering Consultancy LtdWolverhamptonUK

Personalised recommendations