This paper is integral part of the Special Issue on “Existing Concrete Structures: Structural Health Monitoring and Testing for condition assessment.” It deals with vibration‐based methods (VBMs) for damage localization that approach the problem of structural integrity management through the analysis of the dynamic response of the structure under ambient or forced vibrations. In the last years, these methods received a widespread interest in the structural health monitoring (SHM) community due to the possibility to use them for continuous SHM and real time damage identification. The performance of these methods is commonly verified on numerical models or laboratory specimens that, by their nature, cannot reproduce all the sources of uncertainties found in practice. The availability of data recorded on a real benchmark, the S101 bridge in Austria, enabled the comparison of three well known vibration‐based time‐invariant methods for damage localization, namely, the curvature method, the interpolation error method, and the strain energy method. The bridge, built in the early 1960, is a typical example of a European highway bridge. Responses to ambient vibrations were recorded both in the undamaged and in several different damage scenarios artificially inflicted to the bridge. This paper reports the results of the application of the three mentioned methods of damage localization to this case study.

中文翻译：

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基于响应的时不变方法在混凝土桥梁上进行损伤定位

本文是“现有混凝土结构：状态评估的结构健康监测和测试”特刊的组成部分。它涉及用于损伤定位的基于振动的方法（VBM），该方法通过分析结构在环境或强迫振动下的动态响应来解决结构完整性管理的问题。近年来，由于可以将这些方法用于连续的SHM和实时损伤识别，因此这些方法在结构健康监测（SHM）社区中引起了广泛的关注。这些方法的性能通常在数值模型或实验室标本上得到验证，而从本质上讲，它们不能重现实践中发现的所有不确定性来源。记录在真实基准上的数据可用性，例如奥地利的S101桥，可以比较三种众所周知的基于振动的时不变方法进行损伤定位，分别是曲率法，插值误差法和应变能法。该桥建于1960年初，是欧洲高速公路桥的典型例子。在未损坏的桥以及人为地对桥造成的几种不同损坏情况下，都记录了对环境振动的响应。本文报告了上述三种损伤定位方法在本案例研究中的应用结果。在未损坏的桥以及人为地对桥造成的几种不同损坏情况下，都记录了对环境振动的响应。本文报告了上述三种损伤定位方法在本案例研究中的应用结果。在未损坏的桥以及人为地对桥造成的几种不同损坏情况下，都记录了对环境振动的响应。本文报告了上述三种损伤定位方法在本案例研究中的应用结果。