Base isolation of an existing 10-storey building to enhance earthquake resistance
DOI:
https://doi.org/10.5459/bnzsee.38.1.33-40Abstract
The Rankine Brown Building at Victoria University of Wellington, New Zealand houses the University Library and is pivotal to the operation of the University. Built in the early 1960s, the building was of innovative form and construction for its time, with long span precast concrete waffle slabs over 10 floors supported on 16 main columns. Three years ago a review of the building structure suggested that increased protection of the building would be required to meet the University's expectation for operational continuity after a moderate or major earthquake event in the Wellington area. This paper outlines:
Probable areas of structural yielding in a major earthquake event.
Structural analysis for base isolation using earthquake time history records.
Details of base isolation bearings.
Installation of the base isolation bearings.
Other structural details that allow movement of the superstructure to take place due to base isolation.
References
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Mc Verry G. H. & Zhang J. J. (2002), "Accelerograms for Rankine Brown Building". Institute of Geological & Nuclear Sciences Client Report 2002/35 June 2002.
Standards Australia/Standards New Zealand (2002). Structural Design Actions- Part 4 Earthquake Actions. Post Public Comment Draft 2 for Sub-Committee Approval. Draft Joint Australia/New Zealand Standard Draft Number DR 1170.4/PPC2.
Standards New Zealand (1992), "NZS 4203: 1992, Code of practice for General Structural Design and Design Loadings for Buildings". Standards New Zealand, Wellington.
