Experimental behaviour of an innovative demountable balcony with sophisticated connection
Résumé
For a general practice, reinforced concrete balconies are permanently fixed and simultaneously erected onsite with the rest of the structures in the buildings. This practice is problematic in the viewpoint of the onsite security, the speed of construction, and the maintenance of the balcony and the building. This problem calls for an innovative solution of a demountable balcony that has been conceptualized by INGENOVA, an R&D office of a French company GROUPE LEGENDRE. In the proposed system, the balcony is supported by H-profile cantilevers that are connected to the embedded H-profiles in the reinforced concrete slab by bolted joints. The design of the connection of the proposed balcony to the concrete slab, particularly the embedded H-profiles, requires an experimental characterization. This paper presents an experimental investigation of the behaviour of the innovative balcony system through a series of experimental tests on large-scale specimens. The main objectives of these tests are to quantify the local behaviour (distribution of concrete pressures onto embedded H-profiles) as well as the global behaviour (the bearing capacity as well as the deformability). The test results show that the failure mode of the specimen is governed by a punching failure of the concrete or by the rupture of steel bolts in the joint, following the configurations. Furthermore, the distribution of the concrete pressures on the embedded profiles obtained from the tests provides reference results for future development of the analytical design.
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Le et al - 2021 - Experimental behaviour of an innovative demountable balcony -fib_Lisbon_paper_41-1.pdf (2.45 Mo)
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