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A platform for research: civil engineering, architecture and urbanism
Investigation of Metro Train-Induced Environmental Vibration Using a Coupled Sliced Finite Element-Infinite Element Model
https://orcid.org/https://orcid.org/0000-0001-6778-4194
https://orcid.org/https://orcid.org/0009-0008-4149-1412
https://orcid.org/https://orcid.org/0009-0009-5229-6038
https://orcid.org/https://orcid.org/0009-0009-4019-4974
A coupled sliced finite element-infinite element model is developed to analyse the train-induced environmental vibration from metro tunnel by treating the tunnel-ground system as a longitudinal periodic structure. Based on the auxiliary periodic train-track coupling model, this model enables one to select any periodic spatial range of the tunnel-ground system to analyse the response of the longitudinally infinite spatial domain, which will significantly enhance the computational efficiency. Unlike the existing 2.5D models and periodic models accounting for the train-induced environmental vibration, the significant reduction of the degrees of freedom of system in this model does not require a wavenumber transformation, thus only the formation knowledges of system governing equation in the normal space domain rather than in the transformed domain are needed. By comparing the simulated results with the corresponding measured ones, the proposed model is well validated. The transmission features of the metro train-induced environmental vibration, together with the impact on the rail pad stiffness and train velocity on the metro train-induced environmental vibration are also detailed investigated using the proposed model, with some important issues that deserve but have failed to attract due attention clarified.
Investigation of Metro Train-Induced Environmental Vibration Using a Coupled Sliced Finite Element-Infinite Element Model
https://orcid.org/https://orcid.org/0000-0001-6778-4194
https://orcid.org/https://orcid.org/0009-0008-4149-1412
https://orcid.org/https://orcid.org/0009-0009-5229-6038
https://orcid.org/https://orcid.org/0009-0009-4019-4974
A coupled sliced finite element-infinite element model is developed to analyse the train-induced environmental vibration from metro tunnel by treating the tunnel-ground system as a longitudinal periodic structure. Based on the auxiliary periodic train-track coupling model, this model enables one to select any periodic spatial range of the tunnel-ground system to analyse the response of the longitudinally infinite spatial domain, which will significantly enhance the computational efficiency. Unlike the existing 2.5D models and periodic models accounting for the train-induced environmental vibration, the significant reduction of the degrees of freedom of system in this model does not require a wavenumber transformation, thus only the formation knowledges of system governing equation in the normal space domain rather than in the transformed domain are needed. By comparing the simulated results with the corresponding measured ones, the proposed model is well validated. The transmission features of the metro train-induced environmental vibration, together with the impact on the rail pad stiffness and train velocity on the metro train-induced environmental vibration are also detailed investigated using the proposed model, with some important issues that deserve but have failed to attract due attention clarified.
Investigation of Metro Train-Induced Environmental Vibration Using a Coupled Sliced Finite Element-Infinite Element Model
https://orcid.org/https://orcid.org/0000-0001-6778-4194
https://orcid.org/https://orcid.org/0009-0008-4149-1412
https://orcid.org/https://orcid.org/0009-0009-5229-6038
https://orcid.org/https://orcid.org/0009-0009-4019-4974
A coupled sliced finite element-infinite element model is developed to analyse the train-induced environmental vibration from metro tunnel by treating the tunnel-ground system as a longitudinal periodic structure. Based on the auxiliary periodic train-track coupling model, this model enables one to select any periodic spatial range of the tunnel-ground system to analyse the response of the longitudinally infinite spatial domain, which will significantly enhance the computational efficiency. Unlike the existing 2.5D models and periodic models accounting for the train-induced environmental vibration, the significant reduction of the degrees of freedom of system in this model does not require a wavenumber transformation, thus only the formation knowledges of system governing equation in the normal space domain rather than in the transformed domain are needed. By comparing the simulated results with the corresponding measured ones, the proposed model is well validated. The transmission features of the metro train-induced environmental vibration, together with the impact on the rail pad stiffness and train velocity on the metro train-induced environmental vibration are also detailed investigated using the proposed model, with some important issues that deserve but have failed to attract due attention clarified.
Investigation of Metro Train-Induced Environmental Vibration Using a Coupled Sliced Finite Element-Infinite Element Model
KSCE J Civ Eng
Ma, Longxiang (author) / Yu, Yunxiang (author) / Li, Hongyi (author) / Yang, Hao (author)
KSCE Journal of Civil Engineering ; 28 ; 2380-2398
2024-06-01
19 pages
Article (Journal)
Electronic Resource
English
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