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AuthorForsat, Masoud
AuthorTaghipoor, Mohammad
AuthorPalassi, Masoud
Available date2024-07-24T10:13:53Z
Publication Date2022
Publication NameInternational Journal of Pavement Research and Technology
ResourceScopus
ISSN19966814
URIhttp://dx.doi.org/10.1007/s42947-021-00034-0
URIhttp://hdl.handle.net/10576/57080
AbstractThe present research exposes the investigation on three-dimensional modeling of the single and twin metro tunnels for the case of the Tehran metro line. At first, simulation implemented on the comparison of the ground movements in the single and twin tunnels. Then the simulation has been performed on the influence of effective parameters of EPB-TBM on the surface settlements throughout excavation. The overcutting, shield conicity, grouting, and the final lining system modeled and the influence of face supporting pressure, grout injection pressure, as well as the clear distance of the tunnels, has been analyzed. The initial results showed a valid ground settlement behavior. The maximum settlements occurred at the end of the shield tail and it was higher in the single tunnel. The face supporting pressure had more effect on the surface settlement in comparison to the grout injection pressure. By increasing the face pressure in the single tunnel, the place of maximum settlement moved back while the grout pressure is insignificant for decreasing the settlements. Furthermore, the influence of the clear distance in the twin tunnels led to zero after the length of 30 m. Accordingly, for more distances, the tunnels must be examined independently and as two different single tunnels.
SponsorQatar University
Languageen
PublisherSpringer
Subject3D modeling
Finite element
Metro tunnel
Numerical method
Plaxis
Twin tunnels
Title3D FEM Model on the Parameters' Influence of EPB-TBM on Settlements of Single and Twin Metro Tunnels During Construction
TypeArticle
Pagination525-538
Issue Number3
Volume Number15
dc.accessType Abstract Only


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