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首页> 外文期刊>Pure and Applied Geophysics >An Empirical Method to Assess the Seismic Vulnerability of Existing Buildings Using the HVSR Technique
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An Empirical Method to Assess the Seismic Vulnerability of Existing Buildings Using the HVSR Technique

机译：利用HVSR技术评估既有建筑物抗震能力的经验方法

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— The seismic vulnerability of existing buildings is usually estimated according to procedures based on checklists of main structural features. The relationship with damage is then assessed using experience from past events. An approach used in seismology for the evaluation of site amplification, based on horizontal-to-vertical ratio of weak motion and microtremors, has been applied to the structural field. This methodology provides an alternative, promising tool towards a quick and reliable estimate of seismic vulnerability. The advantages are:¶¶• The measurements are quick, simple and stable. They are non-invasive and do not affect at all, even temporarily, the functions housed in the buildings studied.¶• The site effect and the soil structure interaction are explicitly accounted for in the vulnerability estimate, when they are excluded in the traditional approaches.¶• The relationship with damage is established using meaningful physical parameters related to the construction technology, instead of adimensional, normalised indexes.¶¶ The procedure has been applied to several case histories of buildings damaged in the recent Umbria–Marche earthquake which occurred in Italy in 1997. The same model has been applied to different structures (brick/stone masonry and infilled r.c. frames), on different geological conditions and under very different seismic loads. Using this combined site/building approach, it was possible to explain very sharp variations in the damage pattern.
机译：—现有建筑物的地震易损性通常根据主要结构特征清单的程序根据程序估算。然后使用过去事件的经验来评估与损坏的关系。基于弱运动和微震的纵横比，在地震学中用于评估位点放大的方法已应用于结构领域。这种方法为快速，可靠地估计地震脆弱性提供了另一种有前途的工具。优点是：¶¶•测量快速，简单和稳定。它们是非侵入性的，根本不影响研究建筑物中的功能。¶•在传统方法中将场地效应和土壤结构相互作用明确排除在脆弱性估计中使用与施工技术相关的有意义的物理参数，而不是按维度，归一化的指标来建立与破坏的关系。该程序已应用于最近发生在Umbria-Marche地震中的几处建筑物的历史案例中。 1997年在意大利成立。同一模型已应用于不同结构，不同地质条件和不同地震荷载下的结构（砖石砌体和填充式钢筋混凝土框架）。使用这种现场/建筑相结合的方法，可以解释破坏模式的非常剧烈的变化。

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