Overstrength and ductility factors of XBF structures with pinned and fixed supports

• Autorzy: Yahmi Djamal , Branci Taïeb , Bouchaïr Abdelhamid , Fournely Eric

Identyfikatory

DOI

10.2478/sgem-2022-0028

• Języki publikacji: EN

Abstrakty

EN

In today's time, most seismic design codes are based on a linear elastic force-based approach that includes the nonlinear response (ductility and over strength) of the structure through a reduction factor (named behavior factor q in Eurocode 8 [EC8]). However, the use of a prescribed q-factor that is constant for a given structural system may fail in providing structures with the same risk level. This paper focuses on the estimation of actual values of q-factor for X-braced steel frames (XBFs) designed according to the European codes and comparing these values to those suggested in EC8. For this purpose, a nonlinear pushover analysis has been performed. The effects of specific parameters, such as the stories number, the brace slenderness ratio, the local response of structural members, and the support type, are evaluated. The results show that the most important parameter that affects the q-factor is the brace slenderness ratio, while the support type has less effect on this factor. Furthermore, a local strength criterion has been proposed to implicitly ensure that the suggested value of the q-factor is conservative.

Słowa kluczowe

EN

behavior factor; overstrength; ductility; X-braced steel frames; Eurocode 8

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2023
• Tom: Vol. 45, nr 1
• Strony: 41--54
• Opis fizyczny: Bibliogr. 38 poz., rys., tab.

Twórcy

autor

Yahmi Djamal

• Djilali Bounaama University of Khemis Miliana, Khemis Miliana, Algeria

autor

Branci Taïeb

• Hassiba Benbouali University of Chlef, Chlef, Algeria

autor

Bouchaïr Abdelhamid

• Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont- Ferrand, France

autor

Fournely Eric

• Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont- Ferrand, France

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).