Dynamic Performance of Timber Diaphragms in an Unreinforced Masonry Building.

Wilson, Aaron and Abdul Razak, Abdul Karim and Oyarzo-Zera, Claudio and Omenzetter, Piotr and Ingham, Jason M. (2008) Dynamic Performance of Timber Diaphragms in an Unreinforced Masonry Building. In: The 14th World Conference on Earthquake Engineering, October 12-17, 2008, Beijing, China.

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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.

Item Type: Proceeding (Paper)
Uncontrolled Keywords: Dynamic testing, forced vibration, diaphragm, unreinforced masonry building, New Zealand, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Academic Faculties, Institutes and Centres > Faculty of Engineering
Depositing User: Abdul Karim
Date Deposited: 10 Sep 2020 01:05
Last Modified: 10 Sep 2020 01:05
URI: http://ir.unimas.my/id/eprint/31695

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