Hybrid vehicle scanning techniques  tied-arch railway bridges

doi:10.1016/j.compstruc.2024.107441

淡江大學機構典藏 > 工學院 > 建築學系暨研究所 > 期刊論文 > Item 987654321/126802

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题名:	Hybrid vehicle scanning techniques tied-arch railway bridges
作者:	Yau, J.D.;Urushadze, S.
日期:	2024-09
上传时间:	2025-03-20 09:25:34 (UTC+8)
出版者:	Elsevier
摘要:	Regular monitoring of the hanger system is essential for preserving structural integrity in tied-arch bridges. This proactive monitoring enables preventive maintenance and early detection of hanger damage. To confront this issue, we propose a novel scanning method for assessing the impact of damaged hangers on the dynamic behaviour of single-span tied-arch railway bridges. Using each hanger as a positional reference, this method employs an instrumented vehicle as a mobile scanner to indirectly acquire vibration data from the traversed bridge deck. The hybrid approach integrates vehicle-bridge interaction (VBI) dynamics, vehicle scanning method (VSM), and moving windowed Fourier transform (mw-FT) technique to generate time–frequency spectrograms from the collected signals. In this representation, the time axis indicates the duration of the inspection vehicle traversing the bridge deck. By analysing frequency shifts within the spectrogram, we can identify damaged hangers through observed variations in frequency content over time. Numerical studies demonstrate the efficacy of the proposed hybrid vehicle scanning technique in detecting potential hanger damage in tied-arch railway bridges.
關聯:	Computers & Structures 301，p.107441
DOI:	10.1016/j.compstruc.2024.107441
显示于类别:	[建築學系暨研究所] 期刊論文

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