File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Investigating ground vibration induced by moving train loads on unsaturated ground using 2.5D FEM

TitleInvestigating ground vibration induced by moving train loads on unsaturated ground using 2.5D FEM
Authors
Keywords2.5D FEM
High speed train
Moving load
Unsaturated soil
Ground vibration
Issue Date2019
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/soildyn
Citation
Soil Dynamics and Earthquake Engineering, 2019, v. 124, p. 72-85 How to Cite?
AbstractA two-and-a-half-dimensional finite element method (2.5D FEM) is applied to investigate the dynamic response of an unsaturated ground subjected to moving loads caused by high-speed train. The partial differential equations of unsaturated porous medium in frequency domain are deduced based on the equations of motion and mass conservation of three phases, with consideration of the compressibility of solid grain and pore fluid. Governing equations of unsaturated soil in 2.5D FE form are derived by using the Fourier Transform with respect to the load moving direction. The track structure is simplified as an Euler beam resting on the unsaturated porous half-space and the viscous-elastic artificial boundaries are used to avoid the energy reflection from the boundary. Numerical simulations demonstrate effects of the degree of water saturation and train speed to the ground vibration and the excess pore water pressure. It is concluded that the degree of water saturation has a different influence on the ground displacement and acceleration. The gas phase has varied influence to the ground displacement amplitude at different train speed level at the track center. A very small amount of gas in the saturated ground largely increases the ground acceleration amplitude at a given train speed. Ground displacements attenuate rapidly with almost the same rate for both high and low train speeds near the track center. The maximum amplitude of excess pore water pressure is located at 1.5–2.0 m beneath the ground surface and decreases significantly as the degree of water saturation decreases.
Persistent Identifierhttp://hdl.handle.net/10722/273851
ISSN
2023 Impact Factor: 4.2
2023 SCImago Journal Rankings: 1.244
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorGao, G-
dc.contributor.authorYao, S-
dc.contributor.authorYang, J-
dc.contributor.authorChen, J-
dc.date.accessioned2019-08-18T14:49:51Z-
dc.date.available2019-08-18T14:49:51Z-
dc.date.issued2019-
dc.identifier.citationSoil Dynamics and Earthquake Engineering, 2019, v. 124, p. 72-85-
dc.identifier.issn0267-7261-
dc.identifier.urihttp://hdl.handle.net/10722/273851-
dc.description.abstractA two-and-a-half-dimensional finite element method (2.5D FEM) is applied to investigate the dynamic response of an unsaturated ground subjected to moving loads caused by high-speed train. The partial differential equations of unsaturated porous medium in frequency domain are deduced based on the equations of motion and mass conservation of three phases, with consideration of the compressibility of solid grain and pore fluid. Governing equations of unsaturated soil in 2.5D FE form are derived by using the Fourier Transform with respect to the load moving direction. The track structure is simplified as an Euler beam resting on the unsaturated porous half-space and the viscous-elastic artificial boundaries are used to avoid the energy reflection from the boundary. Numerical simulations demonstrate effects of the degree of water saturation and train speed to the ground vibration and the excess pore water pressure. It is concluded that the degree of water saturation has a different influence on the ground displacement and acceleration. The gas phase has varied influence to the ground displacement amplitude at different train speed level at the track center. A very small amount of gas in the saturated ground largely increases the ground acceleration amplitude at a given train speed. Ground displacements attenuate rapidly with almost the same rate for both high and low train speeds near the track center. The maximum amplitude of excess pore water pressure is located at 1.5–2.0 m beneath the ground surface and decreases significantly as the degree of water saturation decreases.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/soildyn-
dc.relation.ispartofSoil Dynamics and Earthquake Engineering-
dc.subject2.5D FEM-
dc.subjectHigh speed train-
dc.subjectMoving load-
dc.subjectUnsaturated soil-
dc.subjectGround vibration-
dc.titleInvestigating ground vibration induced by moving train loads on unsaturated ground using 2.5D FEM-
dc.typeArticle-
dc.identifier.emailYang, J: junyang@hkucc.hku.hk-
dc.identifier.authorityYang, J=rp00201-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.soildyn.2019.05.034-
dc.identifier.scopuseid_2-s2.0-85066232410-
dc.identifier.hkuros301884-
dc.identifier.volume124-
dc.identifier.spage72-
dc.identifier.epage85-
dc.identifier.isiWOS:000477785200005-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl0267-7261-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats