ANIDIS - L'ingegneria Sismica in Italia, ANIDIS XIX & ASSISi XVII - 2022

Dimensione del carattere:  Piccola  Media  Grande

Preliminary analyses of an innovative solution for reducing seismic damage in steel-concrete hybrid-coupled walls

Nicola Ceccolini, Fabrizio Scozzese, Alessandro Zona, Graziano Leoni, Andrea Dall'Asta, Hervé Degeé

Ultima modifica: 2022-10-11


Hybrid steel-concrete structures used as earthquake-resistant systems are an interesting solution for the construction of high structural performance and easy repairable buildings in seismic prone areas. In this framework, an innovative hybrid coupled wall (HCW), made of a single reinforced concrete wall coupled to two steel side columns by means of steel link, was recently proposed. The system is conceived to reduce the damage in the reinforced concrete wall while concentrating dissipation to the replaceable links. Although the numerical analyses for this innovative solution showed good seismic performances and the desired ductile global behaviour, bottom zones of the concrete wall might experience minor but undesired damages. Starting from the first proposed HCW, in this study a new configuration is presented and pre-liminary investigated. The wall is designed as pinned at its base and equipped with additional vertical dissipative devices. In this way, this new configuration is expected to achieve lower damage of the RC wall without reducing its dissipative capacity. In this article the results of pushover analyses are discussed to evaluate the feasibility and the effectiveness of the proposed structural solution.

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