Dynamic testing of a timber floor diaphragm in an unreinforced masonry building

A Wilson, A R Abdul Karim, C Oyarzo-Vera, P Omenzetter, J Ingham

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

Abstract

The flexibility of timber diaphragms in unreinforced masonry buildings has been reported to have a significant effect on the seismic performance of the complete structure. In New Zealand, there currently exists a need to improve the knowledge and expertise associated with the performance of timber diaphragms to assist the seismic assessment of unreinforced masonry buildings and design of seismic retrofit solutions. To address this issue, a series of modal tests were conducted on the third floor timber diaphragm of the Nathan Building located in Auckland’s Britomart Precinct, which is a building typical of New Zealand historic unreinforced masonry construction. Preliminary analysis indicates that the fundamental horizontal natural frequency occurs at 20.5 Hz which reasonably matched the finite element model, which predicted a frequency of 18.49 Hz. Further testing, system identification and finite element updating is required to determine accurate dynamic diaphragm properties. An investigation of typical New Zealand diaphragm details was also conducted to aid future testing and finite element modelling.
Original languageEnglish
Title of host publicationProceedings of the 14th World Conference on Earthquake Engineering
Pages1-8
Number of pages8
DOIs
Publication statusPublished - 12 Oct 2008

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Timber
Diaphragms
Testing
Masonry construction
Natural frequencies
Identification (control systems)

Cite this

Wilson, A., Abdul Karim, A. R., Oyarzo-Vera, C., Omenzetter, P., & Ingham, J. (2008). Dynamic testing of a timber floor diaphragm in an unreinforced masonry building. In Proceedings of the 14th World Conference on Earthquake Engineering (pp. 1-8) https://doi.org/10.13140/2.1.1578.6569

Dynamic testing of a timber floor diaphragm in an unreinforced masonry building. / Wilson, A; Abdul Karim, A R; Oyarzo-Vera, C; Omenzetter, P; Ingham, J.

Proceedings of the 14th World Conference on Earthquake Engineering. 2008. p. 1-8.

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

Wilson, A, Abdul Karim, AR, Oyarzo-Vera, C, Omenzetter, P & Ingham, J 2008, Dynamic testing of a timber floor diaphragm in an unreinforced masonry building. in Proceedings of the 14th World Conference on Earthquake Engineering. pp. 1-8. https://doi.org/10.13140/2.1.1578.6569
Wilson A, Abdul Karim AR, Oyarzo-Vera C, Omenzetter P, Ingham J. Dynamic testing of a timber floor diaphragm in an unreinforced masonry building. In Proceedings of the 14th World Conference on Earthquake Engineering. 2008. p. 1-8 https://doi.org/10.13140/2.1.1578.6569
Wilson, A ; Abdul Karim, A R ; Oyarzo-Vera, C ; Omenzetter, P ; Ingham, J. / Dynamic testing of a timber floor diaphragm in an unreinforced masonry building. Proceedings of the 14th World Conference on Earthquake Engineering. 2008. pp. 1-8
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