Now showing items 1-20 of 48

    • Analysis of the vane test considering size and time effects 

      Pérez Foguet, Agustí; Ledesma Villalba, Alberto; Huerta, Antonio (1999-04)
      Article
      Open Access
      An analysis of the vane test using an Arbitrary Lagrangian-Eulerian formulation within a finite element framework is presented. This is suitable for soft clays for which the test is commonly used to measure in situ undrained ...
    • Analysis of the vane test considering size and time effects 

      Pérez Foguet, Agustí; Ledesma Villalba, Alberto; Huerta, Antonio (1997-09)
      External research report
      Open Access
    • Análisis numérico de los esfuerzos verticales en el paramento de un muro de tierra reforzada en suelo diabásico 

      Puig Damians, Ivan; Josa Garcia-Tornel, Alejandro; Albuquerque, P.J.R.; Lloret Morancho, Antonio; Ledesma Villalba, Alberto; de Santos, C. (2011)
      Conference lecture
      Open Access
      The paper presents a numerical analysis of the service behaviour of a reinforced soil wall constructed in a diabasic soil. A 2D model developed through the Finite Element Method (FEM) using the commercial computer software ...
    • Análisis retrospectivo usando un criterio de máxima verosimilitud (I) 

      Ledesma Villalba, Alberto; Gens Solé, Antonio; Alonso Pérez de Agreda, Eduardo (1990)
      Article
      Open Access
      El artículo presenta una formulación probabilística del problema del análisis retrospectivo, basado en un criterio de máxima verosimilitud. La formulación está organizada de forma jerárquica, de manera que se pueden ...
    • Análisis retrospectivos en problemas geotécnicos: aplicación al control de precargas 

      Santos Rodríguez, Cristian de; Ledesma Villalba, Alberto; Gens Solé, Antonio (Sociedad Española de Mecánica del Suelo e Ingeniería Geotécnica, 2016)
      Conference report
      Restricted access - publisher's policy
      Este artículo muestra el potencial de los análisis retrospectivos como herramienta de control en problemas de Ingeniería Geotécnica y en particular en el control de precargas. La precarga es un método tradicional de mejora ...
    • Backanalysis of measured movements in ageing tunnels 

      de Santos, C.; Ledesma Villalba, Alberto; Gens Solé, Antonio (CRC Press/Balkema, 2012)
      Conference report
      Restricted access - publisher's policy
      The paper describes a procedure to perform backanalysis in a systematic manner in the context of ageing tunnels. Basically the input data include information on relative displacements or deformations of specific points ...
    • Backanalysis of measured movements in ageing tunnels 

      Santos Rodríguez, Cristian de; Ledesma Villalba, Alberto; Gens Solé, Antonio (Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-15)
      Conference lecture
      Open Access
      The paper describes a procedure to perform backanalysis in a systematic manner in the context of ageing tunnels. Basically the input data include information on relative displacements or deformations of specific points ...
    • Backanalysis of preloading 

      Santos Rodríguez, Cristian de; Ledesma Villalba, Alberto; Gens Solé, Antonio (International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2017)
      Conference report
      Open Access
      The paper presents the application of a backanalysis methodology to the inverse analysis of preloading soft clays. The methodology is based on an appropriate selection of the objective function and it uses a novel adaptive ...
    • Boundary effects in the desiccation of soil layers with controlled environmental conditions 

      Lakshmikantha, Ramasesha Mookanahallipatna; Prat Catalán, Pere; Ledesma Villalba, Alberto (2018-07)
      Article
      Open Access
      This article presents the results of an experimental research carried to investigate the mechanics of cracking of soil layers under drying conditions. The tests were conducted under controlled laboratory conditions and in ...
    • Building a deep isolating wall by an existing rail tunnel 

      Molins i Borrell, Climent; Ledesma Villalba, Alberto (Institution of Civil Engineers, 2006)
      Article
      Open Access
      This paper describes the design, construction and early performance of a retaining structure close to a subway tunnel in Barcelona. The excavation, about 16 m deep, was carried out in 2001 during the construction of a new ...
    • Calibración con cálculos dinámicos no lineales del método de Newmark para análisis de estabilidad sísmica de laderas 

      Dong, Shan; López Almansa, Francisco; Ledesma Villalba, Alberto (Asociación Chilena de Sismología e Ingeniería Antisísmica, 2019)
      Conference report
      Open Access
      El método de Newmark es un procedimiento simplificado para analizar la estabilidad de laderas sometidas a acciones sísmicas. En esta formulación se considera un bloque infinitamente rígido situado sobre una superficie ...
    • Comportamiento mecánico de un residuo minero de una mina de níquel 

      Rodríguez Pacheco, Roberto Lorenzo; Lloret Morancho, Antonio; Ledesma Villalba, Alberto; Candela Lledó, Lucila (2005-06)
      Article
      Open Access
      En este trabajo se presentan los resultados de la caracterización mecánica de un residuo metalúrgico (RM), depositado en las terraza aluvial del río Moa (Cuba). El RM de acuerdo a su granulometría se clasifica como un limo. ...
    • Cracking behaviour of silty clay soil under drying-wetting cycles 

      Cordero Arias, Josbel Andreina; Prat Catalán, Pere; Ledesma Villalba, Alberto; Cuadrado Cabello, Agustín (Librairie Ifsttar, 2015)
      Conference report
      Restricted access - publisher's policy
      This paper presents the results and analysis of cracking tests carried on samples of silty clay which were subjected to a drying-wetting-drying cycle to study the effect of cyclic change of moisture on the cracking behaviour. ...
    • Deep enclosures versus pumping to reduce settlements during shaft excavations 

      Pujades Garnes, Estanislao; Vázquez Suñé, Enric; Carrera Ramírez, Jesús; Vilarrasa Riaño, Víctor; De Simone, Silvia; Jurado Elices, Anna; Ledesma Villalba, Alberto; Ramos Schneider, Gonzalo; Lloret Morancho, Antonio (2014-02-04)
      Article
      Restricted access - publisher's policy
      Deep excavations in aquifers may be constructed by combining pumping with the cut and cover method. The enclosures are often deepened more than structurally needed, in order to diminish the risk of heave or fluidisation ...
    • Digital twins in civil and environmental engineering classrooms 

      Chacón Flores, Rolando Antonio; Sánchez Juny, Martí; Real Saladrigas, Esther; Gironella Cobos, Xavier; Puigagut Juárez, Jaume; Ledesma Villalba, Alberto (International Centre for Numerical Methods in Engineering (CIMNE), 2018)
      Conference report
      Open Access
      Digital twins are understood as digital replica of physical models whose behavior can be observed simultaneously (digitally and physically) in real time. These tools are increasingly used in advanced industries for several ...
    • Earthquake static stress transfer in the 2013 Gulf of Valencia (Spain) seismic sequence 

      Salo Salgado, Lluis; Frontera Genovard, Tànit; Goula Suriñach, Xavier; Pujades Beneit, Lluís; Ledesma Villalba, Alberto (2017-09-05)
      Article
      Open Access
      On 24 September 2013, an Ml 3.6 earthquake struck in the Gulf of Valencia (Spain) near the Mediterranean coast of Castelló, roughly 1 week after gas injections conducted in the area to develop underground gas storage had ...
    • Effect of soil saturation changes on pressure on tunnel linings 

      de Santos, C.; Ledesma Villalba, Alberto; Lloret Morancho, Antonio (IOS Press, 2009)
      Conference lecture
      Restricted access - publisher's policy
      It is well known that changes in soil degree of saturation have an important influence on mechanical soil properties. Decreasing suction in soil leads to an increase of specific weight and to a decrease of stiffness and ...
    • Effect of the clay-water interaction in the hydration process of compacted bentonite 

      Jacinto, Abel Carlos; Ledesma Villalba, Alberto (Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica, 2015-06-02)
      Conference report
      Open Access
    • Effects of compaction on desiccation cracking of clayey soils 

      Demagistri, Agustín; Ledesma Villalba, Alberto; Cordero Arias, Josbel Andreina; Moreno, Raúl; Prat Catalán, Pere; Jacinto, Abel Carlos (The Hong Kong University of Science and Technology (HKUST), 2018)
      Conference report
      Open Access
      Cracking in desiccating soils is an important topic in soil compacted works. This paper presents an experimental study on the effect of compaction on the cracking of a silty clay soil, which was subjected to drying conditions. ...
    • Estimation of Parameters in Geotechnical Backanalysis: I. Maximum Likelihood Approach 

      Ledesma Villalba, Alberto; Gens Solé, Antonio; Alonso Pérez de Agreda, Eduardo (Elsevier, 1996)
      Article
      Open Access
      The estimation of soil and rock parameters based on field instrumentation data is a common procedure in geomechanics. The use of system identification and optimization techniques allows the performance of this type of ...