Design and assessment spectra for retrofitting of RC buildings

Thermou, Georgia E.; Elnashai, Amr S.; Pantazopoulou, Stavroula J.

Abstract

This article presents a novel approach for deriving Retrofit Design Spectra (RDS) that are intended for use in preliminary development and assessment of seismic upgrading scenarios of existing structures. The new spectral representation relates the characteristics of the intervention method chosen as the core of the upgrading strategy, with the ductility and strength demand of the retrofitted structure. The methodology utilized for the derivation of the RDS is based on the Capacity Spectrum Method where the capacity curve is described by relationships for global and local intervention methods that are parameterized in terms of fundamental response quantities. The proposed spectra provide direct insight into the complex interrelation between the characteristics of the intervention method and the implications of the upgrading scenario on demand. Alternative retrofit solutions are thus assessed in an efficient way. A case study is used to illustrate practical application of the new approach.

Citation

Thermou, G. E., Elnashai, A. S., & Pantazopoulou, S. J. (2010). Design and assessment spectra for retrofitting of RC buildings. Journal of Earthquake Engineering, 14(5), 743-770. doi:10.1080/13632460903410764

• Journal Article Type: Article
• Acceptance Date: Oct 13, 2009
• Online Publication Date: May 17, 2010
• Publication Date: May 20, 2010
• Deposit Date: Dec 10, 2018
• Publicly Available Date: Jan 22, 2019
• Journal: Journal of Earthquake Engineering
• Print ISSN: 1363-2469
• Electronic ISSN: 1559-808X
• Publisher: Taylor & Francis
• Peer Reviewed: Peer Reviewed
• Volume: 14
• Issue: 5
• Pages: 743-770
• DOI: https://doi.org/10.1080/13632460903410764
• Keywords: Retrofitting; Strengthening; Seismic Upgrading; Rehabilitation; RC Jacketing; FRP Jacketing; Substandard Construction; Spectra
• Public URL: https://nottingham-repository.worktribe.com/output/1394891
• Publisher URL: https://www.tandfonline.com/doi/full/10.1080/13632460903410764