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Freefield vibrations due to dynamic loading on a tunnel embedded in a stratified medium.

Abstract : An efficient and modular numerical prediction model is developed to predict vibration and re-radiated noise in adjacent buildings from excitation due to metro trains in tunnels for both newly built and existing situations. The three-dimensional dynamic tunnel-soil interaction problem is solved with a subdomain formulation, using a finite element formulation for the tunnel and a boundary element method for the soil. The periodicity of the tunnel and the soil in the longitudinal direction is exploited using the Floquet transform, limiting the discretization effort to a single bounded reference cell. It is demonstrated in the paper how the boundary element method can efficiently be extended to deal with periodic media, reusing the available three-dimensional Green's tensors for layered media. The efficiency of the method is demonstrated with a numerical example, where the case of harmonic and transient point loading on the invert of a shallow cut-and-cover masonry tunnel in Paris is considered.
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https://hal.archives-ouvertes.fr/hal-00018946
Contributor : Isabelle Massip Connect in order to contact the contributor
Submitted on : Monday, February 13, 2006 - 2:58:41 PM
Last modification on : Tuesday, June 15, 2021 - 4:08:04 PM

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  • HAL Id : hal-00018946, version 1

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Didier Clouteau, Maarten Arnst, Tahmeed Al-Hussaini, G. Degrande. Freefield vibrations due to dynamic loading on a tunnel embedded in a stratified medium.. Journal of Sound and Vibration, Elsevier, 2005, 283, pp.173-199. ⟨hal-00018946⟩

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