Numerical analysis of twin tunnels lining under different seismic conditions

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Show simple item record El Omari, Abdelhay Chourak, Mimoun Echebba, El Mehdi Cherif, Seif-Eddine Navarro Ugena, Carlos Rougui, Mohamed Hage Chehade, Fadi Lamas Fernández, Francisco Chaaraoui, Aboubakr 2021-09-23T10:44:20Z 2021-09-23T10:44:20Z 2021-02-18
dc.identifier.bibliographicCitation El Omari, A., Chourak, M., Echebba, E. M., Cherif, S.-E., Navarro Ugena, C., Rougui, M., Chehade, F. H., Lamas Fernández, F., & Chaaraoui, A. (2021). Numerical Analysis of Twin Tunnels Lining under Different Seismic Conditions. Infrastructures, 6(2), 29.
dc.identifier.issn 2412-3811
dc.description.abstract The last seismic events showed that tunnel lining may suffer extensive damage. Employing numerical modeling has a great importance in predicting the seismic performance of tunnels. This paper tests the tunnel lining of the Zaouit Ait Mellal (ZAM) twin tunnels located between the cities of Marrakesh and Agadir in Morocco. Dynamic analysis was adopted by FLAC 2D software using the finite-difference elements. Four soil cross-sections were chosen, with different support devices installed along the twin tunnels, such as rock bolts and steel ribs. The seismic signals introduced as input were obtained from three different earthquakes: Al Hoceima 2004 in Morocco, EL Centro 1940 in the USA, and Kobe 1995 in Japan. The numerical results show that the deformation of the tunnel lining is more noteworthy in the sections using steel ribs compared to those using rock bolts, which is observed by the large values of relative displacement, reaching 1020 (mm) and 2.29 × 105 (N.m/m) of maximum bending moment. The analysis indicates that these sections present higher vulnerability during an earthquake, which should be considered when looking at the overall safety of the tunnel.
dc.format.extent 14
dc.language.iso eng
dc.publisher MDPI
dc.rights © 2021 by the authors
dc.rights Atribución 3.0 España
dc.subject.other Finite-Difference Element
dc.subject.other Seismic Performance
dc.subject.other Soil Cross-Sections
dc.subject.other Support Type
dc.subject.other Tunnel Lining
dc.title Numerical analysis of twin tunnels lining under different seismic conditions
dc.type article
dc.subject.eciencia Ingeniería Industrial
dc.rights.accessRights openAccess
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 2
dc.identifier.publicationlastpage 14
dc.identifier.publicationtitle Infrastructures
dc.identifier.publicationvolume 6
dc.identifier.uxxi AR/0000028278
dc.affiliation.dpto UC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Dinámica y Fractura de Elementos Estructurales
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