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

Christianos Burlotos, Kevin C. Walsh, T. Goded, G. McVerry, N. Brooke, J. Ingham
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引用次数: 1

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.
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新西兰南岛用于时程分析的地震区划和地面运动默认记录集
基于性能的地震工程的兴起,再加上为时间历史分析选择记录的复杂性,表明了在缺乏特定场地研究的情况下,结构设计师需要本地化的默认地面运动记录套件。在目前的研究调查中,对概率地震灾害模型(国家地震灾害模型、坎特伯雷地震灾害模型、(Kaikōura地震灾害模型)和预期地震动的位置特定地震特征,为新西兰南岛确定了8个地震危险区和相应的套装剖面,以满足新西兰结构设计标准NZS1170.5的响应历史分析要求。具体记录,包括最近的Kaikōura、达菲尔德和基督城地震的21次记录,然后从公开可用的数据库中选择,并作为默认套件呈现,用于在没有特定地点研究的情况下进行时间历史分析。本次调查包括500年重现周期对应的地震危险,场地等级为C(浅层土壤)和D(深层土壤),以及基本周期在0.4到2.0秒之间的建筑物。
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CiteScore
2.50
自引率
17.60%
发文量
14
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