A series of eccentrically braced frames (EBF) are designed and subjected to nonlinear analyses to highlight ambiguities and differences in current seismic design provisions for EBF structures. This provides motivation to implement better guidance for the checking of local displacement demand considerations and move towards a displacement-based design approach. A recently proposed direct displacement-based design (DDBD) procedure for EBFs is then described and further developed in this paper through the calibration of a spectral displacement reduction factors that relate the displacement of an inelastically responding structure to that of the equivalent linear representation used in the DDBD of EBFs. Such an expression is calibrated as part of this study using an experimentally validated numerical model also proposed here for the EBF links such that the actual hysteretic behaviour of the links is well represented. The DDBD guidelines are applied to EBF systems from 1 to 15 storeys in height and the...

Direct Displacement-Based Seismic Design of Eccentrically Braced Steel Frames

O'Reilly, Gerard
;
Sullivan, Timothy J.
2016

Abstract

A series of eccentrically braced frames (EBF) are designed and subjected to nonlinear analyses to highlight ambiguities and differences in current seismic design provisions for EBF structures. This provides motivation to implement better guidance for the checking of local displacement demand considerations and move towards a displacement-based design approach. A recently proposed direct displacement-based design (DDBD) procedure for EBFs is then described and further developed in this paper through the calibration of a spectral displacement reduction factors that relate the displacement of an inelastically responding structure to that of the equivalent linear representation used in the DDBD of EBFs. Such an expression is calibrated as part of this study using an experimentally validated numerical model also proposed here for the EBF links such that the actual hysteretic behaviour of the links is well represented. The DDBD guidelines are applied to EBF systems from 1 to 15 storeys in height and the...
displacement based design,eccentrically braced frame,eurocode 8.,numerical modelling,spectral displacement reduction factor,steel
File in questo prodotto:
File Dimensione Formato  
J1-2016_O’Reilly, Sullivan_Direct Displacement-Based Seismic Design of Eccentrically Braced Steel Frames.pdf

non disponibili

Tipologia: Versione Editoriale (PDF)
Licenza: Dominio pubblico
Dimensione 2.86 MB
Formato Adobe PDF
2.86 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12076/6182
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 43
  • ???jsp.display-item.citation.isi??? ND
social impact