Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnels

Finite element (FEM) based software is frequently used in practice for tunnel design, alongside the traditional analytical and empirical solutions. Design is not the only challenge in this kind of projects, there are other important factors such as considering what is necessary to develop an efficie...

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Autores principales:	Equihua-Anguiano,Luisa N., Orozco-Calderón,Marcos, Hernández-Madrigal,V. Manuel
Lenguaje:	English
Publicado:	Universidad Católica de la Santísima Concepción 2020
Materias:	nomograph finite element method FEM circular tunnel elastic analysis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132020000200012
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spelling	oai:scielo:S0718-281320200002000122021-01-16Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnelsEquihua-Anguiano,Luisa N.Orozco-Calderón,MarcosHernández-Madrigal,V. Manuel nomograph finite element method FEM circular tunnel elastic analysis Finite element (FEM) based software is frequently used in practice for tunnel design, alongside the traditional analytical and empirical solutions. Design is not the only challenge in this kind of projects, there are other important factors such as considering what is necessary to develop an efficient construction plan under a schedule and foreseeing possible changes that modify the original design. The use of two-dimensional (2D) FEM is one of the main tools used in the industry. However, 2D results yield not an entirely accurate analysis, since the behaviour of the infrastructure is considered as three-dimensional (3D). This paper presents nomographs and a 3D and 2D relationship, to rapidly estimate values of elastic 3D and 2D displacements produced in the periphery of a deep circular tunnel, inside soils of different rigidities. Graphics given correspond to five different radii and for a 100 m excavation length. Nomographs were obtained from RS3© and RS2© FEM simulations and according to the elastic theory. Geotechnical parameters correspond to a constant friction angle, cohesion and soil specific weight. FEM analysis was made using the Mohr-Coulomb model, considering isotropic conditions.info:eu-repo/semantics/openAccessUniversidad Católica de la Santísima ConcepciónObras y proyectos n.28 20202020-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132020000200012en10.4067/S0718-28132020000200012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	nomograph finite element method FEM circular tunnel elastic analysis
spellingShingle	nomograph finite element method FEM circular tunnel elastic analysis Equihua-Anguiano,Luisa N. Orozco-Calderón,Marcos Hernández-Madrigal,V. Manuel Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnels
description	Finite element (FEM) based software is frequently used in practice for tunnel design, alongside the traditional analytical and empirical solutions. Design is not the only challenge in this kind of projects, there are other important factors such as considering what is necessary to develop an efficient construction plan under a schedule and foreseeing possible changes that modify the original design. The use of two-dimensional (2D) FEM is one of the main tools used in the industry. However, 2D results yield not an entirely accurate analysis, since the behaviour of the infrastructure is considered as three-dimensional (3D). This paper presents nomographs and a 3D and 2D relationship, to rapidly estimate values of elastic 3D and 2D displacements produced in the periphery of a deep circular tunnel, inside soils of different rigidities. Graphics given correspond to five different radii and for a 100 m excavation length. Nomographs were obtained from RS3© and RS2© FEM simulations and according to the elastic theory. Geotechnical parameters correspond to a constant friction angle, cohesion and soil specific weight. FEM analysis was made using the Mohr-Coulomb model, considering isotropic conditions.
author	Equihua-Anguiano,Luisa N. Orozco-Calderón,Marcos Hernández-Madrigal,V. Manuel
author_facet	Equihua-Anguiano,Luisa N. Orozco-Calderón,Marcos Hernández-Madrigal,V. Manuel
author_sort	Equihua-Anguiano,Luisa N.
title	Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnels
title_short	Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnels
title_full	Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnels
title_fullStr	Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnels
title_full_unstemmed	Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnels
title_sort	nomographs to obtain three dimensional (3d) elastic displacements for deep circular tunnels
publisher	Universidad Católica de la Santísima Concepción
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132020000200012
work_keys_str_mv	AT equihuaanguianoluisan nomographstoobtainthreedimensional3delasticdisplacementsfordeepcirculartunnels AT orozcocalderonmarcos nomographstoobtainthreedimensional3delasticdisplacementsfordeepcirculartunnels AT hernandezmadrigalvmanuel nomographstoobtainthreedimensional3delasticdisplacementsfordeepcirculartunnels
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Nomographs to obtain three dimensional (3D) elastic displacements for deep circular tunnels

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