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首页> 外文期刊>Journal of Earthquake Engineering >Site Effects Analyses in the Old City Center of Trieste (NE Italy) Using Accelerometric Data
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Site Effects Analyses in the Old City Center of Trieste (NE Italy) Using Accelerometric Data

机译:使用加速度计数据在的里雅斯特(意大利东北部)旧城中心进行场地效应分析

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摘要

The influence of local geology and soil conditions on the intensity and the amplification of ground shaking are well known. Part of the old city center of Trieste is built on the site of a former salina, placed at a river mouth and is characterized by soft sediments several tens of meters thick. A new accelerometric station has been recently installed in a historical building, in order to analyse earthquake-induced site amplifications. This station has recorded five regional earthquakes and the related records are compared to those obtained at a nearby bedrock-installed accelerometeric station. Fourier and response spectra for all components are computed and both the H/V ratio and the reference station techniques are used to assess site effects. Noise measurements performed in the historical building, where the accelerometer is located, confirm these results. Relevant amplifications are detected in the frequency range of 2-4 Hz, particularly important for the type of buildings present in this part of the city.
机译:众所周知,当地地质和土壤条件对地震动的强度和放大的影响。的里雅斯特旧城区的一部分建在前盐沼的遗址上,位于河口,其特征是几十米厚的软沉积物。为了分析地震引起的场地放大,最近在历史建筑中安装了新的加速度计站。该站记录了五次区域地震,并将相关记录与附近安装了基岩的加速度计获得的记录进行了比较。计算所有成分的傅立叶光谱和响应光谱,并使用H / V比和参考站技术来评估现场效果。在加速度计所在的历史建筑中进行的噪声测量确认了这些结果。在2-4 Hz的频率范围内检测到相关的放大信号,这对于城市这一部分的建筑物类型尤其重要。

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