在一个损坏的，倾斜的砖石拱桥的三维力流-从纤维布拉格玫瑰花，录像测量和建模的见解

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-04-18 DOI:10.1016/j.engstruct.2025.120298

Sam Cocking , Haris Alexakis , Matthew DeJong

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引用次数: 0

摘要

砖石拱桥很常见，尤其是在英国和欧洲，但对其结构行为的解释可能具有挑战性，而且在其漫长的使用寿命中，其损坏历史往往会使其复杂化。评估这些桥梁维修工程的表现，对继续使用这些桥梁有信心，至为重要。本文介绍了光纤传感和视频测量的新应用，以前所未有的细节测量和可视化倾斜砖石拱桥的三维动态结构响应。特别是，光纤应变花环用于绘制主应变的分布，从而绘制整个拱的力流，而视频测量则以横向拱弯曲的形式揭示了二次载荷路径。然后将监测结果与这种横向弯曲的简化分析模型相结合，研究旨在恢复拱与拱肩墙之间结构连通性的干预工程的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The three-dimensional flow of force in a damaged, skewed masonry arch railway bridge – Insights from fibre Bragg rosettes, videogrammetry, and modelling

Masonry arch bridges are common, especially in the UK and Europe, but interpretation of their structural behaviour can be challenging and is often complicated by histories of damage over their long working lives. Assessing the performance of repair works at these bridges is vital, to provide confidence in their continued use. This paper presents novel applications of fibre-optic sensing and videogrammetry to measure and visualise the three-dimensional, dynamic structural response of a skewed masonry arch railway bridge in unprecedented detail. In particular, fibre-optic strain rosettes are used to map the distributions of principal strains, and hence force flow, throughout the arch, while videogrammetry reveals a secondary load path in the form of transverse arch bending. Monitoring results are then combined with simplified analytical models of this transverse bending, to study the effectiveness of intervention works aimed at restoring structural connectivity between the arch and its spandrel walls.

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来源期刊

Engineering Structures 工程技术-工程：土木

CiteScore

10.20

自引率

14.50%

发文量

1385

审稿时长

67 days

期刊介绍： Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.