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Glass Structures & Engineering

, Volume 4, Issue 1, pp 69–82 | Cite as

On parameters affecting the racking stiffness of timber-glass walls

  • Boštjan BerEmail author
  • Gregor Finžgar
  • Miroslav Premrov
  • Andrej Štrukelj
SI: Challenging Glass paper
  • 134 Downloads

Abstract

An extensive parametric numerical study was performed after completed experimental campaign of timber-glass hybrid walls (TGW and TGWE). 36 timber-glass models (TG) with different outer dimensions were built and analysed with a goal to capture the basic response of mechanically tested timber-glass walls and to determine the racking stiffness of the calculated numerical models. Timber frame was modelled using linear beam elements with hinges in all four corners, an IGU was modelled as a multilayer shell and finally a layer of adhesive was modelled with linear and nonlinear springs, which were distributed circumferentially around the edge of IGU and connected onto a timber frame. Normal and shear stiffness coefficients for linear-elastic springs were calculated, while for nonlinear springs a special series of mechanical tests on polyurethane (PU) adhesive was performed since a lack of data available in addition to the desired amount of information needed for the numerical analysis. Uniaxial tension, compression and shear tests were made to obtain the results in form of the load-displacement curve, which presented a direct input for nonlinear normal and shear springs of the mathematical model. For each compression and tension mechanical test three specimens were prepared and tested up to rupture, while a double-lap shear test was conducted using two specimens giving two results each. PU adhesive specimens of the first series had dimensions of 50 mm \(\times \) 50 mm and thickness of 5.0 mm. Mechanical tests were repeated for two additional thicknesses of PU adhesive, namely 7.0 mm and 9.0 mm. After completed experimental investigation on PU adhesive joint, together 108 numerical models with different external dimensions were analysed in commercial code SAP2000. Having the correct information about the stiffness of the single TG shear wall one can calculate the stiffness of the entire timber-glass building built with such walls.

Keywords

Timber-glass walls Hybrid structures Adhesive joint FEA Springs Linear-elastic Nonlinear 

Notes

Acknowledgements

The investment is co-financed by the Republic of Slovenia and the European Union under the European Regional Development Fund.

References

  1. Amadio, C., Bedon, C.: Effect of circumferential sealant joints and metal supporting frames on the buckling behavior of glass panels subjected to in-plane shear loads. Glass Struct. Eng. (2016).  https://doi.org/10.1007/s40940-015-0001-2 Google Scholar
  2. Bedon, C., Amadio, C.: A unified approach for the shear buckling design of structural glass walls with non-ideal restrains. Am. J. Eng. Appl. Sci. (2016).  https://doi.org/10.3844/ajeassp.2016 Google Scholar
  3. Bedon, C., Amadio, C.: Buckling analysis and design proposal for 2-side supported double insulated glass units (IGUs) in compression. Eng. Struct. (2018).  https://doi.org/10.1016/j.engstruct.2018.04.055 Google Scholar
  4. Ber, B., Premrov, M., Štrukelj, A., Kuhta, M.: Experimental investigations of timber-glass composite wall panels. Constr. Build. Mater. (2014).  https://doi.org/10.1016/j.conbuildmat.2014.05.044 Google Scholar
  5. Ber, B., Šušteršič, I., Premrov, M., Štrukelj, A., Dujič, B.: Testing of timber-glass composite walls. Proc. Inst. Civ. Eng. Struct. Build. (2015).  https://doi.org/10.1680/stbu.13.00105 Google Scholar
  6. Ber, B., Premrov, M., Štrukelj, A.: Finite element analysis of timber-glass walls. Glass Struct. Eng. (2016).  https://doi.org/10.1007/s40940-016-0015-4 Google Scholar
  7. Blyberg, L., Serrano, E., Enquist, B., Sterley, M.: Adhesive joint for structural timber/glass applications: experimental testing and evaluation methods. Int. J. Adhes. Adhes. (2012).  https://doi.org/10.1016/j.ijadhadh.2012.02.008 Google Scholar
  8. Blyberg, L., Lang, M., Lundstedt, K., Schander, M., Serrano, E., Silfverheilm, M., Stalhandske, C.: Glass, timber and adhesive joints: innovative load bearing building components. Constr. Build. Mater. (2014).  https://doi.org/10.1016/j.conbuildmat.2014.01.045 Google Scholar
  9. Frangež, R., Ber, B., Premrov, M.: Experimental and numerical investigations of timber-glass shear walls. In: Proceedings of the World Conference on Timber Engineering, Vienna, Austria (2016)Google Scholar
  10. Hochhauser, W.: A contribution to the calculation and sizing of glued and embedded timber-glass composite panes. Ph.D. Thesis. Vienna University of Technology, Austria (2011)Google Scholar
  11. Huveners, E.M.P., van Herwijnen, F., Soetens, F., Hofmeyer, H.: Mechanical shear properties of adhesives. In: Proceedings of Glass Performance Days, Tampere, Finland (2007)Google Scholar
  12. Huveners, E.M.P.: Circumferentially adhesive bonded glass panes for bracing steel frames in facades. Ph.D. Thesis. University of Technology Eindhoven, Netherlands (2009)Google Scholar
  13. Kozłowski, M., Dorn, M., Serrano, E.: Experimental testing of load-bearing timber-glass composite shear walls and beams. Wood Mater. Sci. Eng. (2015).  https://doi.org/10.1080/17480272.2015.1061595 Google Scholar
  14. Niklisch, F., Hernandez Maetschl, S., Schlehlein, M., Weller, B.: Development of load-bearing timber-glass composite shear wall elements. In: Proceedings of Glass Performance Days, Tampere, Finland (2015)Google Scholar
  15. Premrov, M., Žegarac Leskovar, V., Mihalič, K.: Influence of the building shape on the energy performance of timber-glass buildings in different climatic conditions. Energy (2016).  https://doi.org/10.1016/j.energy.2015.05.027 Google Scholar
  16. Premrov, M., Ber, B., Štrukelj, A.: Cyclic and shaking-table tests of timber-glass buildings. Int. J. Comput. Methods Exp. Meas. (2017).  https://doi.org/10.2495/CMEM-V5-N6-928-939 Google Scholar
  17. Štrukelj, A., Ber, B., Premrov, M.: Racking resistance of timber-glass elements using different types of adhesives. Constr. Build. Mater. (2015).  https://doi.org/10.1016/j.conbuildmat.2015.05.112 Google Scholar
  18. Weller, B., Aßmus, E., Niklisch, F.: Assessment of the suitability of adhesives for load-bearing timber-glass composite elements. In: Proceedings of Glass Performance Days, Tampere, Finland (2013)Google Scholar
  19. Winter, W., Hochhauser, W., Kreher, K.: Load bearing and stiffening timber-glass-composites (TGC). In: Proceedings of the World Conference on Timber Engineering (2010)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Boštjan Ber
    • 1
    • 2
    Email author
  • Gregor Finžgar
    • 3
  • Miroslav Premrov
    • 1
  • Andrej Štrukelj
    • 1
  1. 1.Faculty of Civil Engineering, Transportation Engineering and ArchitectureUniversity of MariborMariborSlovenia
  2. 2.Jelovica hiše d.o.o.PreddvorSlovenia
  3. 3.Kager hiša d.o.o.PtujSlovenia

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