Iovane, Giacomo (2020) Innovative Seismic Resistant Structural Systems for Timber Constructions. [Tesi di dottorato]


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Item Type: Tesi di dottorato
Resource language: English
Title: Innovative Seismic Resistant Structural Systems for Timber Constructions
Date: April 2020
Number of Pages: 429
Institution: Università degli Studi di Napoli Federico II
Department: Ingegneria Civile, Edile e Ambientale
Dottorato: Ingegneria strutturale, geotecnica e rischio sismico
Ciclo di dottorato: 32
Coordinatore del Corso di dottorato:
Faggiano, BeatriceUNSPECIFIED
Date: April 2020
Number of Pages: 429
Keywords: Seismic resistant timber structures, steel-to-timber joints, fluid viscous dampers, dissipative timber structures, component method for joints, capacity design.
Settori scientifico-disciplinari del MIUR: Area 08 - Ingegneria civile e Architettura > ICAR/09 - Tecnica delle costruzioni
Additional information: 3395965914
Date Deposited: 19 Mar 2020 08:01
Last Modified: 05 Nov 2021 11:54

Collection description

Timber is a structural material with numerous advantages that can be exploited for the design of structures in a seismic area, such as the low density and deformability that entail the reduction of seismic actions; on the other hand, it is a material with an elastic-fragile behaviour. Currently, in the seismic resistant timber structures design, the dissipative capacity is delegated to the connections with steel connectors, which can dissipate a part of the seismic energy through their plastic deformations. The connections, however, are themselves main structural elements, allowing the timber structural members assembly, typically prefabricated, and the transfer on internal forces between the members. To overcome this problem, therefore, the dissipative capacity should be delegated to specific devices, ad hoc designed. With these premises, the work focused on the study of seismic resistant heavy timber frame structures equipped with two different dissipative devices: steel links and fluid viscous dampers (FVD), which dissipate seismic energy respectively by plastic deformations and by viscous friction, while the remaining part of the structure, consisting of the timber members and the steel connections, is designed with opportune overstrength, so that to remain in the elastic field. The study methodology is very extensive, including the following activities: conception of global structural type systems and structural details; definition of the design criteria for global and local systems; analysis of the seismic performance of the structures by means of non-linear, parametric numerical analysis, both static incremental and time-history dynamic analyses (using SAP2000 software); study of beam-to-column joints with dissipative steel links through both monotonic and cyclic numerical analysis on advanced FE models (using ABAQUS software), and through experimental tests on full-scale joint assemblies. The proposed solutions allowed to obtain hybrid-structures timber-steel and structures with FVDs with a high dissipative capacity that, in some cases, are better than steel structures, with a consistent reduction of material, re-centering capability of the structure, which remains in the elastic field without damage, less expensive and complex connections. The reduction of production and maintenance costs follows. All these involve the enhancement of structural performance and sustainability under earthquakes.


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