Modelling and testing of a historic steel suspension footbridge in Ireland
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|Shaky Bridge Paper_ICE Bridge_final one to use 201016.pdf||1.17 MB||Adobe PDF||Download|
|Title:||Modelling and testing of a historic steel suspension footbridge in Ireland||Authors:||O'Donnell, Deirdre
|Permanent link:||http://hdl.handle.net/10197/10343||Date:||1-Jun-2017||Online since:||2019-05-08T11:19:26Z||Abstract:||Daly’s Bridge is a historic steel suspension footbridge in Ireland, known locally as the ‘Shaky Bridge’ for its noticeable movement under pedestrian loading. While there is concern regarding the performance of the structure, testing or modelling have not been carried out till date and inadequate information exist in relation to carrying out such analyses. In this paper, Daly’s bridge is instrumented and tested for the first time and a model of the bridge is established and improved in the process. Apart from ambient vibration, excitation from traversing pedestrians and cyclists is considered. Video analysis of dynamic deflection, a wavelet packet based technique using acceleration responses and dynamic measurements from a cheap smartphone accelerometer application are used to identify and compare the natural frequency of the bridge. The work contributes to the evidence base of full-scale measurements of instrumenting and analysing responses of aging pedestrian bridges highlighting the complexity, challenges, opportunities and limitations related to varied levels of information available from disparate sources . The study also highlights the need of investigating to what extent cheap sensors can be successfully used as compared to their more expensive and sophisticated counterpart.||Type of material:||Conference Publication||Publisher:||ICE Publishing||Volume:||170||Issue:||2||Start page:||116||End page:||132||Copyright (published version):||2017 ICE Publishing||Keywords:||Bridges; Field testing and monitoring; Maintenance and inspection||DOI:||10.1680/jbren.15.00047||Language:||en||Status of Item:||Not peer reviewed||Is part of:||Proceedings of the Institution of Civil Engineers: Bridge Engineering|
|Appears in Collections:||Mechanical & Materials Engineering Research Collection|
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