Solaio composito parzialmente prefabbricato con soletta in calcestruzzo e travi in legno connesse a profilati in acciaio

FENU, LUIGI;BOZANO E.

2009-01-01

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Abstract

A partially prefabricated composite floor, with wood-steel composite beams connected with a concrete slab, is studied. It is made of a light prefabricated part and a cast-in-place concrete slab. The prefabricated part is made of wood beams connected with cold-formed steel profiles and a sandwich panel with wooden boards and polystirene sheets between the beams. The concrete slab is cast on the polystyrene sheets. In the stage of erection, the prefabricated part is first set-in-place, and, by means of the wood-steel composite beams, is also able to support the fluid concrete without cribs. When the concrete is hardened, a composite floor with two members in compression (concrete slab and cold formed steel profiles) connected with wood beams is obtained. In this latter case, the steel profiles help the concrete slab in providing the compressive internal reaction of the composite floor, although with a stress level lower than that reached in the stage of erection when the weight of fluid concrete loads the wood-steel composite beams.