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Seismic vulnerability scenarios of Unreinforced Masonry churches in New Zealand

机译：新西兰未合金砌体教堂的地震脆弱性情景

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摘要

A vulnerability analysis of c.300 unreinforced Masonry churches in New Zealand is presented. The analysis uses a recently developed vulnerability index method (Cattari et al. in Proceedings of the New Zealand Society for Earthquake Engineering NZSEE 2015 conference, Rotorua, New Zealand, 2015a; b; SECED 2015 conference: earthquake risk and engineering towards a Resilient World, Cambridge; Goded et al. in Vulnerability analysis of unreinforced masonry churches (EQC 14/660)-final report, 2016; Lagomarsino et al. in Bull Earthq Eng, 2018), specifically designed for New Zealand churches, based on a widely tested approach for European historical buildings. It consists of a macroseismic approach where the seismic hazard is defined by the intensity and correlated to post seismic damage. The many differences in typologies of New Zealand and European churches, with very simple architectural designs and a majority of one nave churches in New Zealand, justified the need to develop a method specifically created for this country. A statistical analysis of the churches damaged during the 2010-2011 Canterbury earthquake sequence was previously carried out to develop the vulnerability index modifiers for New Zealand churches. This new method has been applied to generate seismic scenarios for each church, based on the most likely seismic event for 500 years return period, using the latest version of New Zealand's National Seismic Hazard Model. Results show that highly vulnerable churches (e.g. stone churches and/or with a weak structural design) tend to produce higher expected damage even if the intensity level is lower than for less vulnerable churches in areas with slightly higher seismicity. The results of this paper provide a preliminary tool to identify buildings requiring in depth structural analyses. This paper is considered as a first step towards a vulnerability analysis of all the historical buildings in the country, in order to preserve New Zealand's cultural and historic
机译：提出了新西兰C.300未使用砌体教堂的脆弱性分析。分析使用最近开发的漏洞指标方法（Cattari等人。在新西兰地震工程纽约州的新西兰协会的会议上，罗托鲁瓦，新西兰，2015年，2015年; B; SECED 2015年会议：地震风险和工程对一个弹性世界，剑桥; Godeed等人。在未成年的砌体教堂（EQC 14/660） - 2016年的脆弱性分析中，2016年。Lagomarsino等，2018年在公牛地球Eng，2018年，专为新西兰教堂而设计，基于一项广泛测试的方法设计对于欧洲历史建筑。它由一种巨大的方法组成，其中地震危害由强度定义并与后抗震损伤相关。新西兰和欧洲教堂的类型众多差异，具有非常简单的建筑设计和新西兰的大多数殿教堂，证明了开发专门为该国家创造的方法。以前对2010-2011坎特伯雷地震序列损坏的教会进行了统计分析，以开发新西兰教堂的脆弱性指标修饰符。这种新方法已应用于每个教会的地震情景，基于500年返回期的最有可能的地震事件，利用最新的新西兰国家地震危险模型。结果表明，即使强度水平低于具有略高震动区域的地区的区域低于弱势教堂，高度脆弱的教堂（例如石头教堂和/或结构设计）往往会产生更高的预期损坏。本文的结果提供了一种初步工具，用于识别需要深度结构分析的建筑物。本文被认为是朝着该国所有历史建筑的脆弱性分析的第一步，以保护新西兰的文化和历史

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