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Investigation of hybrid steel‐glass beams with adhesive silicone shear connection
Author(s) -
Dias Vincent,
Odenbreit Christoph
Publication year - 2016
Publication title -
steel construction
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.443
H-Index - 8
eISSN - 1867-0539
pISSN - 1867-0520
DOI - 10.1002/stco.201400004
Subject(s) - materials science , composite material , composite number , adhesive , laminated glass , glass fiber , shear (geology) , stiffness , silicone , bending , beam (structure) , structural engineering , engineering , layer (electronics)
Glass is used in current construction applications mostly as a façade element, its structural role being only rarely exploited, despite its significant resistance to in‐plane compression. A steel‐glass composite beam was built to investigate a hybrid steel‐glass assembly and its loadbearing behaviour. To fulfil this objective, the existing types of steel‐glass connection were evaluated, which allowed the possibilities offered by adhesive jointing to be highlighted. The selection of the adhesive, detailed in the present article, constituted a crucial aspect. An excessively soft connection does not transfer the shear loads between the glass and steel adherends, whereas an excessively stiff connection leads to failure of the glass. A two‐component structural silicone was chosen and its properties were assessed with the help of an intensive test programme. As a result of this programme, a new quasi‐incompressible hyperelastic material law was developed in order to represent the silicone elastomer behaviour. Numerical simulations were conducted in parallel to large‐scale four‐point bending tests on the adhesively bonded steel‐glass composite beams. The aims were, on the one hand, to assess the bending stiffness of the steel‐glass composite beam and, on the other, to validate the numerical simulations to conduct parametric studies.