Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9
The urban tunneling may generate significant problems. One of the main concerns is the unavoidable ground movements generated; before, during and after the tunneling operations. In this context, the objective of this Thesis is the study of the ground movements, both on the surface and at depth, caus...
| Autor: | |
|---|---|
| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | español |
| OAI Identifier: | oai:upcommons.upc.edu:2117/351126 |
| Acceso en línea: | https://hdl.handle.net/2117/351126 https://dx.doi.org/10.5821/dissertation-2117-351126 |
| Access Level: | acceso abierto |
| Palabra clave: | Tuneladora Movimientos del terreno Pérdida de volumen de terreno Cubeta de asiento Elementos finitos Ground movement Ground volume loss Settlement trough Finite elements Transports Metropolitans de Barcelona Àrees temàtiques de la UPC::Enginyeria civil |
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| dc.title.none.fl_str_mv |
Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9 |
| title |
Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9 |
| spellingShingle |
Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9 Yubero de Mateo, Maria Teresa|||0000-0003-1871-8507 Tuneladora Movimientos del terreno Pérdida de volumen de terreno Cubeta de asiento Elementos finitos Ground movement Ground volume loss Settlement trough Finite elements Transports Metropolitans de Barcelona Àrees temàtiques de la UPC::Enginyeria civil |
| title_short |
Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9 |
| title_full |
Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9 |
| title_fullStr |
Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9 |
| title_full_unstemmed |
Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9 |
| title_sort |
Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9 |
| dc.creator.none.fl_str_mv |
Yubero de Mateo, Maria Teresa|||0000-0003-1871-8507 |
| author |
Yubero de Mateo, Maria Teresa|||0000-0003-1871-8507 |
| author_facet |
Yubero de Mateo, Maria Teresa|||0000-0003-1871-8507 |
| author_role |
author |
| dc.contributor.none.fl_str_mv |
Gens Solé, Antonio Mariano, Alessandra di |
| dc.subject.none.fl_str_mv |
Tuneladora Movimientos del terreno Pérdida de volumen de terreno Cubeta de asiento Elementos finitos Ground movement Ground volume loss Settlement trough Finite elements Transports Metropolitans de Barcelona Àrees temàtiques de la UPC::Enginyeria civil |
| topic |
Tuneladora Movimientos del terreno Pérdida de volumen de terreno Cubeta de asiento Elementos finitos Ground movement Ground volume loss Settlement trough Finite elements Transports Metropolitans de Barcelona Àrees temàtiques de la UPC::Enginyeria civil |
| description |
The urban tunneling may generate significant problems. One of the main concerns is the unavoidable ground movements generated; before, during and after the tunneling operations. In this context, the objective of this Thesis is the study of the ground movements, both on the surface and at depth, caused by tunnel excavations using Tunnel Boring Machines (TBMs). Within the scope of TBMs, we can distinguish between tunneling machines for hard ground and shield machines for excavation in low-strength soils. The shield machines and, specifically, the Earth Pressure Balance shields, are based on the principle of equilibrium between the tunnel face and the excavated soil in the front chamber. An example of EPB tunneling is the case of the Line 9 (under construction) of the Barcelona Metro. Once the Line will be finished, it would be one of the longest lines in Europe with a total length of 47.8 Km constructed for the most part in an urban setting. This Line 9 tunnel crosses different types of soils. This Thesis specifically refers to the excavation of Line 9 between Terminal 1 at the Prat airport and the industrial area called “Parc Logistic”. This 14 km- long section of the route is called Section 1 in the construction project of the Line 9 and corresponds to the stretch between the stations of Terminal T1 and Parc Logístic. The studied area is located in the Llobregat river delta and it is made up of quaternary deltaic deposits completely excavated in soft deltaic deposits of mixed soft clays that constitute a quite uniform layer. Tunneling is performed by two EPB machines of 9.4 m diameter. An important monitoring system was installed not only in Section 1 but throughout the whole line as well. The system was devoted to the measurement of the magnitude and distribution of ground movements before, during and after the passing of the EPB. The information on the horizontal and vertical movements, at the surface and at depth, is analyzed and compared with empirical and semi-empirical methods available in the literature. Both the cross-section and the longitudinal distributions are considered. For the case of surface settlement troughs, the comparisons are made at two times related to the excavation process. The first one, called short-term, considers the movements until the tunnel lining has been installed. The second one, called long-term, considers the movements until the consolidation of the ground has finished. The settlement distributions have been represented by an inverted Gaussian distribution curve that has been adjusted using different methods. In addition, the observed settlement troughs have been approximated by alternative empirical expressions and by equations based on analytical solutions. For the case of the vertical and horizontal movement distributions at depth, the same short-term and the long-term points mentioned above have been considered. Movements at depth have been examined in ten cross-sections (also called transverse sections) along the line, called Control Sections. In the same way, the data recorded by vibrating wire piezometers and Casagrande open piezometers have been analyzed and the variation of the piezometric has been plotted. The analysis of all the data collected has allowed the comparison between the results of Line 9 Section 1 with forty-five cases of tunnels excavated not only in similar soft soils, but also in sandy soils and in stiff clays. Finally, two-dimensional simulation of the excavation has been carried out using the Plaxis finite element program, using a constitutive model that includes small deformation behavior, the Small Strain Hardening Soil. The analysis has been able to reproduce satisfactorily the observed movements both in the short and long term, establishing a useful record for other EPB tunneling projects in similar soft soils. |
| publishDate |
2021 |
| dc.date.none.fl_str_mv |
2021 2021-07-22 2021 2021-09-12 |
| dc.type.none.fl_str_mv |
doctoral thesis http://purl.org/coar/resource_type/c_db06 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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https://hdl.handle.net/2117/351126 https://dx.doi.org/10.5821/dissertation-2117-351126 |
| url |
https://hdl.handle.net/2117/351126 https://dx.doi.org/10.5821/dissertation-2117-351126 |
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Español spa |
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Español |
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spa |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 http://creativecommons.org/licenses/by-nc/4.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 http://creativecommons.org/licenses/by-nc/4.0/ |
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openAccess |
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application/pdf |
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Universitat Politècnica de Catalunya |
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Universitat Politècnica de Catalunya |
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reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
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UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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1869408203439079424 |
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Ejecución de túneles en terreno deltaico mediante tuneladora EPB : el caso de la línea 9Yubero de Mateo, Maria Teresa|||0000-0003-1871-8507TuneladoraMovimientos del terrenoPérdida de volumen de terrenoCubeta de asientoElementos finitosGround movementGround volume lossSettlement troughFinite elementsTransports Metropolitans de BarcelonaÀrees temàtiques de la UPC::Enginyeria civilThe urban tunneling may generate significant problems. One of the main concerns is the unavoidable ground movements generated; before, during and after the tunneling operations. In this context, the objective of this Thesis is the study of the ground movements, both on the surface and at depth, caused by tunnel excavations using Tunnel Boring Machines (TBMs). Within the scope of TBMs, we can distinguish between tunneling machines for hard ground and shield machines for excavation in low-strength soils. The shield machines and, specifically, the Earth Pressure Balance shields, are based on the principle of equilibrium between the tunnel face and the excavated soil in the front chamber. An example of EPB tunneling is the case of the Line 9 (under construction) of the Barcelona Metro. Once the Line will be finished, it would be one of the longest lines in Europe with a total length of 47.8 Km constructed for the most part in an urban setting. This Line 9 tunnel crosses different types of soils. This Thesis specifically refers to the excavation of Line 9 between Terminal 1 at the Prat airport and the industrial area called “Parc Logistic”. This 14 km- long section of the route is called Section 1 in the construction project of the Line 9 and corresponds to the stretch between the stations of Terminal T1 and Parc Logístic. The studied area is located in the Llobregat river delta and it is made up of quaternary deltaic deposits completely excavated in soft deltaic deposits of mixed soft clays that constitute a quite uniform layer. Tunneling is performed by two EPB machines of 9.4 m diameter. An important monitoring system was installed not only in Section 1 but throughout the whole line as well. The system was devoted to the measurement of the magnitude and distribution of ground movements before, during and after the passing of the EPB. The information on the horizontal and vertical movements, at the surface and at depth, is analyzed and compared with empirical and semi-empirical methods available in the literature. Both the cross-section and the longitudinal distributions are considered. For the case of surface settlement troughs, the comparisons are made at two times related to the excavation process. The first one, called short-term, considers the movements until the tunnel lining has been installed. The second one, called long-term, considers the movements until the consolidation of the ground has finished. The settlement distributions have been represented by an inverted Gaussian distribution curve that has been adjusted using different methods. In addition, the observed settlement troughs have been approximated by alternative empirical expressions and by equations based on analytical solutions. For the case of the vertical and horizontal movement distributions at depth, the same short-term and the long-term points mentioned above have been considered. Movements at depth have been examined in ten cross-sections (also called transverse sections) along the line, called Control Sections. In the same way, the data recorded by vibrating wire piezometers and Casagrande open piezometers have been analyzed and the variation of the piezometric has been plotted. The analysis of all the data collected has allowed the comparison between the results of Line 9 Section 1 with forty-five cases of tunnels excavated not only in similar soft soils, but also in sandy soils and in stiff clays. Finally, two-dimensional simulation of the excavation has been carried out using the Plaxis finite element program, using a constitutive model that includes small deformation behavior, the Small Strain Hardening Soil. The analysis has been able to reproduce satisfactorily the observed movements both in the short and long term, establishing a useful record for other EPB tunneling projects in similar soft soils.El progresivo incremento en la construcción de túneles urbanos puede crear problemas significativos. Una de las principales preocupaciones es la inevitable generación de movimientos: antes, durante y después del proceso de excavación. En este sentido, el objetivo de esta tesis es el estudio de los movimientos producidos en el terreno tanto en superficie como en profundidad debido al proceso de excavación de un túnel con máquinas tuneladoras. Dentro del ámbito de máquinas tuneladoras, se distingue entre: los topos para terrenos duros y los escudos para la excavación en terrenos de baja resistencia. Las máquinas tipo escudos y en particular, los escudos de presión de tierras “Earth Pressure Balance” (EPB), se basan en el principio de equilibrio entre el frente de excavación y el propio terreno excavado situado en la cámara de tierras. Este terreno ya excavado evita posibles inestabilidades del frente, en especial, cuando se excava en terrenos poco cohesivos bajo el agua. Un claro ejemplo, de ejecución de túneles con máquina tuneladora tipo EPB, es el caso de la línea 9 del metro de Barcelona. La futura línea de metro será una de la más larga de Europa con aproximadamente 47.8 Km de longitud, y discurre por zona urbana casi en su totalidad. Dado, la gran longitud de la nueva Línea 9 de metro y la variabilidad de los materiales que atraviesa, esta tesis se centrará únicamente en una parte del trazado de la línea, concretamente la sección entre la Terminal 1 del Aeropuerto del Prat y el polígono industrial de Parc Logístic considerado en el proyecto como Tramo 1 y que corresponde al tramo entre las estaciones de Terminal T1 y de Parc Logístic respectivamente, con una longitud entre ambas de casi 14 kilómetros. Esta zona de estudio se encuentra enmarcada en el delta del río Llobregat y está formada por materiales del cuaternario deltaicos con mezcla de arcillas blandas que forman un paquete muy uniforme excavado. El túnel ha sido excavado mediante dos tuneladoras tipo EPB de 9.40 m de diámetro. Tanto en el tramo considerado (Tramo 1) como en todo el trazado de la Línea 9, se ha instalado un intenso sistema de instrumentación, para medir la magnitud y distribución de los movimientos del terreno, antes, durante y después del paso de la máquina EPB. Los datos de movimientos verticales y horizontales del terreno en superficie y en profundidad son analizados y comparados con métodos empíricos, semi-empíricos y analíticos existentes en la literatura. Se consideran tanto las cubiertas transversales de asientos como la distribución de movimientos verticales en la dirección longitudinal al túnel. En el caso de las cubetas de asientos en superficie se consideran dos momentos relacionados con el proceso de excavación. El primero, llamado a corto plazo, considera los movimientos hasta una primera estabilización que se produce una vez colocado el revestimiento del túnel y el segundo, llamado a largo plazo, considera los desplazamientos cuando el proceso de consolidación en el terreno del terreno ha finalizado. Estas cubetas son representadas mediante una curva de distribución Gaussiana invertida, ajustada mediante el empleo de diferentes métodos. Adicionalmente, también se han utilizado expresiones alternativas, tanto empíricas como basadas en soluciones analíticas, para describir las cubetas de asientos en superficie. En el caso de los movimientos en profundidad también se han estimado la distribución de movimientos verticales y movimientos horizontales en los dos momentos anteriormente considerados. Dichos movimientos en profundidad han ido considerados en diez secciones transversales al trazado, llamadas Secciones de Control. Además, se han analizado los datos recogidos por piezómetros de cuerda vibrante y piezómetros abiertos y se ha dibujado la variación del nivel piezométrico. Además, el análisis de todos estos datos ha permitido la comparación entre los resultados del Tramo 1 con otros cuarenta y cinco casos de túneles donde excavados no solo en terrenos blandos similares sino también en terrenos arenosos y en arcillas rígidas. Por último, se realiza una simulación en dos dimensiones mediante el programa de elementos finitos Plaxis, con el modelo constitutivo para pequeñas deformaciones Small Strain Hardening Soil, que permite reproducir satisfactoriamente los movimientos observados tanto a corto como a largo plazo, estableciendo así una herramienta potencialmente útil para la construcción de túneles futuros en terrenos blandos similares.Universitat Politècnica de CatalunyaGens Solé, AntonioMariano, Alessandra di20212021-07-2220212021-09-12doctoral thesishttp://purl.org/coar/resource_type/c_db06VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/doctoralThesisapplication/pdfhttps://hdl.handle.net/2117/351126https://dx.doi.org/10.5821/dissertation-2117-351126reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Españolspaopen accesshttp://purl.org/coar/access_right/c_abf2http://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3511262026-05-27T15:37:01Z |
| score |
15.301629 |