Abstract
The safety of the built heritage of our cities towards environmental factors and seismic actions is a pressing need for designers and researchers. The actual trend is to setup effective solutions to reduce thermal dispersions through the building envelope. Contrarily, combined systems able to enhance the resistance of constructions to earthquakes, on the one hand, and, on the other hand, to increase the energetic efficiency of existing buildings are scarcely diffused on the market and are rarely investigated in the scientific literature. In this framework, the seismic design of the new envelope DUO system for seismic-environmental requalification of existing masonry constructions is illustrated in the present paper with reference to a case study in the Neapolitan area. After the geometrical and mechanical characterization of the investigated building is performed, an FEM model of the masonry construction is setup by the SAP2000 analysis program, which has allowed performing pushover analyses. Based on the non-linear seismic response of the construction, an appropriate upgrading design mainly based on the innovative seismic envelope DUO system has been made. The static non-linear analyses applied to the upgraded FEM model of the building have shown a clear increase in performance in terms of strength, stiffness and ductility, thus confirming the effectiveness of the proposed envelope system.
Highlights
In Italy, residential buildings are characterized by different construction types
This paper focuses on masonry buildings, which represent the most widespread construction technology in Italy but all over the world, whose erections were made several centuries ago
The case study is a masonry building located in the municipality of Torre Annunziata, in the district of Naples, Italy
Summary
In Italy, residential buildings are characterized by different construction types. In particular, the Italian historic centres are often characterized by a large presence of masonry buildings. The usual poor mechanical characteristics of masonry do not help the structures against an earthquake, which could be damaged even if subjected to low seismic excitation [1,2,3,4,5,6] These kinds of buildings were built in most cases in historical periods when no seismic design was required. Integrated designs aimed to improve the buildings from both energy and seismic viewpoints have been developed [24,25,26] This combined design approach is used in this paper, where the retrofitting and upgrading of the ecologic-seismic system represented by the novel seismic coat produced by the Italian company DUO System is proposed and presented. In order to achieve a satisfactory level of safety, in addition to the seismic coating, other intervention techniques, such as the replacement of existing floors, are proposed
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
