Abstract
In this paper, a methodology is proposed in order to extract a relevant representation of a response spectrum considering numerous acquisitions from dynamic sensors located in different places and sollicitated under different sollicitations. This methodology, which is an extension of the Frequency Domain Decomposition method, is based on the intercorrelation of signals and the extraction of the singular values of the spectral density matrix. We illustrate it on the study of the impact of vibrations generated by the excavation of a tunnel by a tunnel boring machine (TBM), with measurements on the ground and inside a TBM under ambient noise then during the excavation.
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Rallu, A., Berthoz, N. (2023). In-situ Measurements Frequency Analysis at a Site Scale. Application to Vibrations Induced by Tunnel Boring Machines. In: Dimitrovová, Z., Biswas, P., Gonçalves, R., Silva, T. (eds) Recent Trends in Wave Mechanics and Vibrations. WMVC 2022. Mechanisms and Machine Science, vol 125. Springer, Cham. https://doi.org/10.1007/978-3-031-15758-5_32
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DOI: https://doi.org/10.1007/978-3-031-15758-5_32
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