Elastoplastic analysis of the effects of the advance of a double-track railway tunnel on the soil and on the tunnel support. In-situ testing and 2d modelling

Authors

  • Fernando López-Gayarre
  • Mariano Rodríguez Avial-Llardent
  • Francisco José Suárez-Domínguez
  • Martina-Inmaculada Álvarez-Fernández
  • María-Belén Prendes-Gero

DOI:

https://doi.org/10.7764/RDLC.18.2.258

Keywords:

In-situ testing, FLAC 2D modelling, Tunnel support, Excavation length, Elastoplastic analysis

Abstract

This study involves an elastoplastic analysis of the effects of the advance of a double-track railway tunnel on the soil and the tunnel support. The strength and deformation properties have been determined using in-situ testing with equipment designed and patented by the Soil Engineering Research Group at the University of Oviedo (GIITUO). The behaviour of the excavation face and the ideal trace are studied using a 2D model of the longitudinal cross section of the tunnel. In this work one study of the behaviour of the soil and the support during the different phases of excavation is given. From it, it is possible to say that in the initial phases of the excavation and with temporary support there are not significant deformations. Once the final support is applied, the maximum compressive stresses (7MPa) are concentrated in the crown zone and the maximum tensile stresses are in the base of the support of the top heading and the sidewalls (0.15-0.5 MPa

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Author Biographies

Fernando López-Gayarre

Universidad de Oviedo, Escuela Politécnica Superior de Ingeniería de Gijón, Departamento de Construcción Edificio departamental 6, 33204, Gijón, Asturias, Spain gayarre@uniovi.es

Mariano Rodríguez Avial-Llardent

 Universidad Nacional de Educación a Distancia, Departamento de Ingeniería de Construcción y Fabricación Facultad de Educación, Juan del Rosal 14, 28040, Madrid, Spain mrodriguezavial@ind.uned.es

Francisco José Suárez-Domínguez

Universidad de Oviedo, Escuela Politécnica Superior de Ingeniería de Gijón, Departamento de Construcción Edificio departamental 7, 33204, Gijón, Asturias, Spain paco@constru.uniovi.es

Martina-Inmaculada Álvarez-Fernández

 Universidad de Oviedo, Escuela de Ingeniería de Minas, Energía y Materiales de Oviedo, Departamento de Explotación y Prospección de Minas Independencia 13, 33004, Oviedo, Asturias, Spain inma@git.uniovi.es 

María-Belén Prendes-Gero

Universidad de Oviedo, Escuela Politécnica Superior de Ingeniería de Gijón, Departamento de Construcción Edificio departamental 6, 33204, Gijón, Asturias, Spain mbprendes@uniovi.es

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Published

2019-08-31

How to Cite

López-Gayarre, F., Rodríguez Avial-Llardent, M., Suárez-Domínguez, F. J., Álvarez-Fernández, M.-I., & Prendes-Gero, M.-B. (2019). Elastoplastic analysis of the effects of the advance of a double-track railway tunnel on the soil and on the tunnel support. In-situ testing and 2d modelling. Revista De La Construcción. Journal of Construction, 18(2), 258–270. https://doi.org/10.7764/RDLC.18.2.258

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