Identification of span of Multi-span Simply Supported Girders by the Longitudinal Level Waveforms

Document identifier: oai:DiVA.org:ltu-75758
Keyword: Engineering and Technology, Civil Engineering, Other Civil Engineering, Teknik och teknologier, Samhällsbyggnadsteknik, Annan samhällsbyggnadsteknik, Span identification, Multi-span simply supported girders, Longitudinal level waveform, Time-frequency analysis, Drift och underhållsteknik, Operation and Maintenance
Publication year: 2019
Relevant Sustainable Development Goals (SDGs):
SDG 9 Industry, innovation and infrastructureSDG 3 Good health and wellbeing
The SDG label(s) above have been assigned by OSDG.ai

Abstract:

In high-speed railways, the periodic component of longitudinal level on the top surface of the track can be observed for multi-span simply supported girders. To monitor this component, the paper proposes a method to determine the locating position of simply supported girders using longitudinal level waveforms. The method first applies time-frequency analysis to determine the locating position of simply supported girder bridges in the longitudinal level waveform. Then it adopts a local minimum detection strategy to identify the locating position of the girders. The method is evaluated using the longitudinal level data of a 100km high-speed railway in China; the results show good locating performance.

Authors

Bo Zhang

Infrastructure Inspection Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing, China
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Xiubo Liu

Infrastructure Inspection Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing, China
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Jing Lin

Luleå tekniska universitet; Drift, underhåll och akustik
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