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    Seismic zonation and default suites of ground-motion records for time-history analysis in the South Island of New Zealand

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    Date
    2022-03-01
    Authors
    Burlotos, Christianos
    Walsh, Kevin
    Goded, Tatiana
    McVerry, Graeme
    Brooke, Nicholas
    Ingham, Jason
    Metadata
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    Abstract
    The rise of performance-based earthquake engineering, in combination with the complexity associated with selecting records for time-history analysis, demonstrates an expressed need for localized default suites of ground motion records for structural designers to use in the absence of site-specific studies. In the current research investigation, deaggregations of probabilistic seismic hazard models (National Seismic Hazard Model, Canterbury Seismic Hazard Model, and Kaikōura Seismic Hazard Model) and the location-specific seismological characteristics of expected ground motions were used to define eight seismic hazard zonations and accompanying suite profiles for the South Island of New Zealand to satisfy the requirements of the New Zealand structural design standard NZS1170.5 for response-history analyses. Specific records, including 21 from the recent Kaikōura, Darfield, and Christchurch earthquakes, were then selected from publicly-available databases and presented as default suites for use in time-history analyses in the absence of site-specific studies. This investigation encompasses seismic hazards corresponding to 500-year return periods, site classes C (shallow soils) and D (deep soils), and buildings with fundamental periods between 0.4 and 2.0 seconds.
    URI
    https://doi.org/10.5459/bnzsee.55.1.25-42
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    • Bulletin of the New Zealand Society for Earthquake Engineering

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