Linear Time-History Analysis for EC8 design of CBF structures

Alessia Di Cuia, Luca Lombardi, Flavia De Luca, Raffaele De Risi, Silvia Caprili, Walter Salvatore

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Increased availability of strong motions, improved computational capabilities and availability of open-source software for Eurocode 8-compliant record selection make Linear Time History Analysis (LTHA) a potential more rigorous analysis approach for the design of structures. This methodology is not explicitly codified in the Eurocode and it requires some “code-friendly” recommendations for its implementation in practice. Herein, LTHA is employed for the first time as design method for a five-storey archetype high ductility class concentric brace frame (CBF). A new-optimized design method for braces is presented for the smooth implementation of both Response Spectrum Analysis (RSA) and LTHA. In fact, the tension-only design approach for CBF in Eurocode 8 has some criticalities arising even when a routine RSA is employed. The design process is rather smooth only in the case of linear static approach classically implemented for regular, mid-rise structures. Results of this study provide insights for validation of LTHA as design method for CBFs, and for its code implementation as routine design method in EC8, valuable in near source conditions or for irregular structural configurations.
Original languageEnglish
Pages (from-to)3522-3527
Number of pages6
JournalProcedia Engineering
Early online date12 Sep 2017
Publication statusPublished - 2017
EventX International Conference on Structural Dynamics, EURODYN 2017 - Rome, Italy
Duration: 10 Sep 201713 Sep 2017
Conference number: 10

Bibliographical note

Type: Conference proceeding


  • Eurocode 8
  • Linear Time-History Analysis
  • Concentric Brace Frames
  • Tension-Only design


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