Vol. 1, No. 6, 2006

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ISSN: 1559-3959
Study of viscoelastic and friction damper configurations in the seismic mitigation of medium-rise structures

Julius Marko, David Thambiratnam and Nimal Perera

Vol. 1 (2006), No. 6, 1001–1039
Abstract

This paper presents a comprehensive study of the seismic mitigation of medium rise frame-shear wall structures using embedded dampers. Two building structures with embedded viscoelastic and friction dampers in different configurations and placed in various locations throughout the structure are subjected to five different earthquake loadings. Finite element techniques are used to model the dampers and the structures and to obtain the dynamic responses. Influence of damper type and properties, configuration, and location are investigated using time history responses. Results for tip deflection and acceleration are evaluated for a number of cases and demonstrate the feasibility of the technique for seismic mitigation of these structures for a range of excitations, even when the dominant seismic frequencies match the natural frequency of the structure. Results also provide information which can be used for optimal damper placement for seismic mitigation.

Keywords
dampers, multistory buildings, seismic mitigation, finite element techniques
Milestones
Received: 20 December 2005
Revised: 14 February 2006
Accepted: 16 March 2006
Published: 1 October 2006
Authors
Julius Marko
School of Urban Development
Queensland University of Technology
GPO Box 2434, Brisbane 4001
Australia
David Thambiratnam
School of Urban Development
Queensland University of Technology
GPO Box 2434, Brisbane 4001
Australia
Nimal Perera
Robert Bird & Partners
Warwick House
25 Buckingham Palace Road
London SW1W 0PP
United Kingdom