Cicia, Massimo (2026) On the seismic design and response of gusset plate connections in steel concentrically braced frames. [Tesi di dottorato]
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| Tipologia del documento: | Tesi di dottorato |
|---|---|
| Lingua: | English |
| Titolo: | On the seismic design and response of gusset plate connections in steel concentrically braced frames |
| Autori: | Autore Email Cicia, Massimo massimo.cicia@unina.it |
| Data: | 8 Giugno 2026 |
| Numero di pagine: | 518 |
| Istituzione: | Università degli Studi di Napoli Federico II |
| Dipartimento: | Strutture per l'Ingegneria e l'Architettura |
| Dottorato: | Ingegneria strutturale, geotecnica e rischio sismico |
| Ciclo di dottorato: | 38 |
| Coordinatore del Corso di dottorato: | nome email Iervolino, Iunio iunio.iervolino@unina.it |
| Tutor: | nome email Landolfo, Raffaele [non definito] Okazaki, Taichiro [non definito] D'Aniello, Mario [non definito] |
| Data: | 8 Giugno 2026 |
| Numero di pagine: | 518 |
| Parole chiave: | Gusset plate connections, force-transfer mechanisms, concentrically braced frames, finite element modelling, chevron braced frames, cyclic behaviour. |
| Settori scientifico-disciplinari del MIUR: | Area 08 - Ingegneria civile e Architettura > ICAR/09 - Tecnica delle costruzioni |
| Informazioni aggiuntive: | Ciclo di dottorato di effettiva appartenenza: 38 |
| Depositato il: | 15 Giu 2026 12:54 |
| Ultima modifica: | 12 Ago 2026 05:37 |
| URI: | https://www.fedoa.unina.it/id/eprint/16019 |
Abstract
This thesis investigates the nonlinear response and force-transfer mechanisms of gusset plate connections in steel concentrically braced frames, with emphasis on the interaction between braces, connections and surrounding frame components. The research addresses the limitations of conventional analytical methods for gusset plate force evaluation, which provide statically admissible design force fields but may not accurately reproduce the actual distribution of vertical forces, horizontal forces and in-plane bending moments at gusset-to-beam and gusset-to-column interfaces. The study was developed through a combined numerical and experimental framework. Detailed finite element analyses were carried out on corner gusset plate connections to assess the influence of modelling assumptions, boundary conditions, bolt preloading and connection detailing. The numerical results were compared with analytical methods commonly adopted in design practice, and semi-empirical formulations were proposed to estimate the force demand at gusset plate interfaces and validated against an independent case study. In parallel, tensile coupon tests and monotonic and cyclic stub-column tests were used to characterise the steel hollow-section brace components and validate the numerical modelling strategy. Finally, the cyclic behaviour of a chevron concentrically braced frame designed according to the European seismic framework was investigated through experimental testing and finite element simulation. The results show that gusset plate force demand is a system-dependent quantity, governed by brace axial response, connection deformability and surrounding frame stiffness. The thesis provides numerical and experimental evidence supporting a member–connection–frame interpretation of the seismic behaviour of steel concentrically braced frames.
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