PSI - Issue 11

Valentina Pertile et al. / Procedia Structural Integrity 11 (2018) 347–354 Pertile V., De Stefani L. and Scotta R./ Structural Integrity Procedia 00 (2018) 000–000

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8. Conclusions With this work we wanted to demonstrate the feasibility of the proposed system for the structural and energy requalification of existing buildings. To this end, linear buckling analyzes were performed on finite element models of plates in different load and constraint configurations and a parametric study on a standard building to obtain pre dimensioning schedules. The results obtained confirm the feasibility of the system, indicating the need to limit the ratio between height and length of the wall to prevent out-of-plane instability. It is necessary to underline that these results have been obtained in the hypothesis of linear elastic material and slab considering an elastic modulus of the whole concrete, without reduction due to possible cracks. To obtain results that are closer to reality, it is necessary to introduce into the model the elastic-plastic behavior of the reinforced concrete and the presence of imperfections. The analysis of the case study presented in this paper shows that the proposed system is particularly effective when applied to medium-sized buildings located in areas of average seismicity. In the future we intend to continue with the development of this system by defining a dedicated calculation method. Furthermore, a new set of experimental tests is being planned for the characterization of the technology’s behavior and the validation of the calculation method that will be proposed. 9. Thanks The present work is the result of a research project entitled "SMARTCLADDING: Development of an intelligent coat for thermal-acoustic-seismic retrofitting of existing buildings", financed by the Veneto Region with the FSE POR 2016 tender, and was carried out in collaboration with the company Ecosism Srl. 10. References Ascione, F., De Rossi, F., Vanoli, G.P., 2011. Energy retrofit of historical buildings: theoretical and experimental investigations for the modelling of reliable performance scenarios. Energy and Buildings 43(8), 1925-1936. Bernardini, A., Vescovi, U., 1982. Tecnica delle costruzioni sicurezza e non linearità delle strutture. Cleup. ElGawady, M., Lestuzzi, P., Bardoux, M., 2004. A review of conventional seismic retrofitting techniques for URM. 13th International Brick and Block Masonry Conference. July 4-7, Amsterdam, NL. Priestley, M.N.J, Seible, F., 1995. Design of seismic retrofit measures for concrete and masonry structures. Construction and Building Materials, 9(6), 365-377. Zhenjun, M., et al., 2012. Existing building retrofits: Methodology and state-of-the-art. Energy and Buildings 55, 889-902.