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Table · dataset · 2020

Data for Vibration serviceability of a GFRP railway crossing due to pedestrians and train excitation

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Glass Fibre-Reinforced Polymers (GFRPs) are a popular option for pedestrian bridges over railway lines as they cause little disruption for installation or maintenance.

Description

However, as they are typically lighter and less stiff than traditional materials there is concern about their dynamic response due to human induced actions and train buffeting. Due to a lack of experimental information, further data is needed if such bridges are to be used on future lines, especially with higher speed limits.

This paper presents an experimental investigation of the response of a 14.5 m GFRP truss bridge due to pedestrian loading and train induced vibrations. Vibration modes of interest were identified from impact hammer tests. The vibration responses to a range of human loading scenarios, as well as multiple train passes, were measured.

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The vibration levels remained low under all conditions, demonstrating that this particular type of GFRP bridge is suitable for railway crossings and that further optimisations may be available to designers while meeting vibration serviceability limits. However, consideration of the loadings suggests GFRP bridges may be more susceptible to higher pedestrian harmonics than traditional structures, and that vibrations from train buffeting are likely to be a design consideration for future bridges over high speed lines.<br><br>Data record consists of a zip archive, organised by subfolders according to test type, and an accompanying readme file.

Two types of data are included: Modal testing – conducted in the factory and on site, and Response testing from walking in the factory conditions and train passes in service. Each subfolder has a ReadMe file containing details of the data files. All data is provided in .txt form

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Civil engineering 69%
Provenance · 1 source records, 17 field assertions
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