Non-modal vibration-based methods for bridge damage identification
نویسندگان
چکیده
منابع مشابه
A Summary Review of Vibration-based Damage Identification Methods
This paper provides an overview of methods to detect, locate, and characterize damage in structural and mechanical systems by examining changes in measured vibration response. Research in vibration-based damage identification has been rapidly expanding over the last few years. The basic idea behind this technology is that modal parameters (notably frequencies, mode shapes, and modal damping) ar...
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This paper provides an overview of methods that examine changes in measured vibration response to detect, locate, and characterize damage in structural and mechanical systems. The basic idea behind this technology is that modal parameters (notably frequencies, mode shapes, and modal damping) are functions of the physical properties of the structure (mass, damping, and stiffness). Therefore, cha...
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The research described in this paper focuses on the application of modal strain techniques on a multi-girder bridge superstructure with the objectives of identifying the presence of damage and detecting false damage diagnosis for such structures. The case study is a one-third scale model of a slab-on-girder composite bridge superstructure, comprised of a steel-free concrete deck with FRP rebars...
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To avoid the false results of deterministic identification methods induced by uncertainties, a fuzzy nearness-based method is proposed for the damage identification of bridge. An improved index based on ratios of modal shape components is used as identification measurements. The knowledge base for damage identification is established through corresponding relationship between fuzzified measurem...
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Methods for damage localization, based on modal parameters, are validated by means of numerical examples and experiments. In this paper, different load and damage cases are simulated with a Finite-Element model of a prestressed reinforced concrete bridge. Taking nonlinear material behaviour into account, realistic crack propagations and decrease of stiffness can be detected. The damage is local...
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ژورنال
عنوان ژورنال: Structure and Infrastructure Engineering
سال: 2019
ISSN: 1573-2479,1744-8980
DOI: 10.1080/15732479.2019.1650080