A risk-consistent approach to determine EN1998 behaviour factors for lateral load resisting systems

A risk-consistent approach is proposed for the evaluation of behaviour factors that are compatible with Eurocode 8, using nonlinear static and dynamic analysis. It comprises seven discrete steps, involving hazard assessment and record selection at multiple sites, designing and modelling multiple arc...

Full description

Saved in:
Bibliographic Details
Published in:Soil dynamics and earthquake engineering (1984) 2020-04, Vol.131, p.106008, Article 106008
Main Authors: Vamvatsikos, Dimitrios, Bakalis, Konstantinos, Kohrangi, Mohsen, Pyrza, Stella, Castiglioni, Carlo Andrea, Kanyilmaz, Alper, Morelli, Francesco, Stratan, Aurel, D' Aniello, Mario, Calado, Luis, Proença, Jorge Miguel, Degee, Hervé, Hoffmeister, Benno, Pinkawa, Marius, Thanopoulos, Pavlos, Vayas, Ioannis
Format: Article
Language:English
Subjects:
Behaviour factor
Building codes
Eurocodes
Hazard assessment
Lateral loads
Nonlinear analysis
Performance-based earthquake engineering
Risk
Seismic design
Seismic risk
Steel frames
Steel structures
Uncertainty
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A risk-consistent approach is proposed for the evaluation of behaviour factors that are compatible with Eurocode 8, using nonlinear static and dynamic analysis. It comprises seven discrete steps, involving hazard assessment and record selection at multiple sites, designing and modelling multiple archetype buildings and assessing their performance vis-à-vis target safety objectives. In all cases, uncertainty is incorporated and propagated to the final results whereby a flexible verification procedure is offered to account for the confidence of the investigator on the data available. An example application is offered on steel concentrically braced frames, highlighting the need for selecting appropriate performance targets for Europe. The overall added value goes beyond the current state of art, offering a consistent risk basis for the seismic design of different systems that is compatible with current uniform hazard design spectra and can benefit from future risk-targeted hazard maps. •A risk-consistent approach is proposed for deriving EN1998 compatible behaviour factors.•Hazard assessment, record selection and incorporation of uncertainty are important aspects of the approach.•Setting appropriate performance targets is required to achieve consistency with current EN1998 implied safety.•An example is shown for steel concentrically braced frames.
ISSN:0267-7261
1879-341X
DOI:10.1016/j.soildyn.2019.106008