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Proceedings Paper

Assessment of dynamic and long-term performance of an innovative multi-story timber building via structural monitoring and dynamic testing
Author(s): Piotr Omenzetter; Hugh Morris; Margaret Worth; Andrew Gaul; Simon Jager; Yohann Desgeorges
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Paper Abstract

An innovative three-story timber building, using self-centering, post-tensioned timber shear walls as the main horizontal load resisting system and lightweight non-composite timber-concrete floors, has recently been completed in Nelson, New Zealand. It is expected to be the trailblazer for similar but taller structures to be more widely adopted. Performance based standards require an advanced understanding of building responses and in order to meet the need for in-situ performance data the building has been subjected to forced vibration testing and instrumented for continuous monitoring using a total of approximately 90 data channels to capture its dynamic and long-term responses. The first part of the paper presents a brief discussion of the existing research on the seismic performance of timber frame buildings and footfall induced floor vibrations. An outline of the building structural system, focusing on the novel design solutions, is then discussed. This is followed by the description of the monitoring system. The analysis of monitoring results starts with a discussion of the monitoring of long-term deformations. Next, the assessment of the floor vibration serviceability performance is outlined. Then, the forced vibration tests conducted on the whole building at different construction stages are reviewed. The system identification results from seismic shaking records are also discussed. Finally, updating of a finite element model of the building is conducted.

Paper Details

Date Published: 3 April 2012
PDF: 19 pages
Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 83452P (3 April 2012); doi: 10.1117/12.914535
Show Author Affiliations
Piotr Omenzetter, The Univ. of Auckland (New Zealand)
Hugh Morris, The Univ. of Auckland (New Zealand)
Margaret Worth, The Univ. of Auckland (New Zealand)
Andrew Gaul, The Univ. of Auckland (New Zealand)
Simon Jager, The Univ. of Auckland (New Zealand)
Yohann Desgeorges, The Univ. of Auckland (New Zealand)

Published in SPIE Proceedings Vol. 8345:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Masayoshi Tomizuka; Chung-Bang Yun; Jerome P. Lynch, Editor(s)

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