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首页> 外文期刊>Bulletin of Earthquake Engineering >Site effects evaluation in Málaga city’s historical centre (Southern Spain)
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Site effects evaluation in Málaga city’s historical centre (Southern Spain)

机译：马拉加市历史中心（西班牙南部）的场地影响评估

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摘要

In this paper we present a site effects analysis carried out in Málaga city’s historical centre (Southern Spain). Two different methodologies have been used: an experimental technique using ambient noise measurements and a 1D numerical method. Soil fundamental frequencies have been obtained from the first technique, and soil transfer functions have been calculated from the numerical methodology. In order to use these results in vulnerability studies, intensity increments for each type of soil have also been estimated. From this information, a seismic microzonation has been proposed for the city centre, classified in six types of soils. Soil fundamental frequencies vary between above 5.0Hz at the hills of the city (where rock arises on the surface), and 1.0Hz near Guadalmedina river. The results show regions with high intensity increments (ΔI = +1.5) corresponding to areas which suffered heavy damage in the 1680 earthquake (Imax = VIII–IX). Moreover, most of the monuments and historical buildings in the city are located in these high risk areas. Results underline the importance of this kind of studies for seismic risk mitigation, historical preservation and emergency planning in the main cities’ historical centres.
机译：在本文中，我们介绍了在马拉加市历史中心（西班牙南部）进行的场地影响分析。已使用两种不同的方法：使用环境噪声测量的实验技术和一维数值方法。从第一种技术获得了土壤基本频率，并且从数值方法中计算出了土壤传递函数。为了在脆弱性研究中使用这些结果，还估算了每种土壤的强度增量。根据这些信息，已经提出了针对市中心的地震微区划，分为六种类型的土壤。土壤的基频在城市丘陵（岩石表面生长）的5.0Hz以上和瓜达尔梅迪纳河附近的1.0Hz之间变化。结果表明，对应于1680年地震（I max = VIII–IX）遭受严重破坏的地区，强度增量较高的区域（ΔI= +1.5）。此外，城市中的大多数古迹和历史建筑都位于这些高风险地区。结果强调了这类研究对于主要城市历史中心的地震风险缓解，历史保存和应急计划的重要性。

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