STRUTTURA SISMORESISTENTE A SOLAIO COMPOSTO ACCIAIO-LEGNO PER L’EDILIZIA RESIDENZIALE SOCIALE

Modern buildings are generally constructed by paying a particular attention to the use of materials and building technologies that foster the building sustainability and ensure an adequate seismic-resistant behaviour to the structure. The cross laminated timber panel, in short CLT, is one of the most widely used timber products within the residential building industry, also thanks to its intrinsic structural usage flexibility. It can be used both to build timber structures, in particular multi-storey buildings, and to construct hybrid concrete-timber or steel-timber structures. This paper focuses on a particular hybrid solution for the construction of light and resistant structures with load-bearing steel and mixed steel-timber elements. Regarding the effects of the seismic forces, the overall stability is ensured by the interaction among the vertical bracing walls and the composite floors with slabs made of CLT panels. In particular, the collaboration among CLT panels and steel beams ensures some features to the floors, namely lightness, high load-bearing capacity and, above all, an adequate in-plane diaphragm and out-of-plane flexural behaviour. The document will show the main results obtained from the experimental tests and the numerical analyses carried out in order to assess the floor response of a typical building for social housing.