Now showing items 1-20 of 39

  • 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 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 ...
  • 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
  • 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 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 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 ...
  • 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: II. Application to a Tunnel Excavation Problem 

    Gens Solé, Antonio; Ledesma Villalba, Alberto; Alonso Pérez de Agreda, Eduardo (Elsevier, 1996)
    Article
    Open Access
    A general statistical framework to perform backanalysis in geotechnical problems from field instrumentation has been presented in a companion paper. Here, an application to a real case involving the excavation of a tunnel ...
  • 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 ...
  • Evaluation of alternative methodologies to minimize movements of a diaphragm wall close to buildings 

    de Santos, C.; Ledesma Villalba, Alberto; Lloret Morancho, Antonio; Alonso Pérez de Agreda, Eduardo (IOS Press, 2011)
    Conference lecture
    Restricted access - publisher's policy
    In the framework of the construction of the high-speed railway passing through Barcelona, a large excavation (21m depth) has made to about 2 m of a building. The excavation was done in the quaternary material typical of ...
  • Excavación de un pozo profundo para revisión de una tuneladora en el centro de Barcelona 

    Ledesma Villalba, Alberto; Lloret Morancho, Antonio; de Santos, C.; Ramos, Gonzalo; Alonso Pérez de Agreda, Eduardo; Vázquez Suñé, Enric; Pujades Garnes, Estanislao; Carrera Ramírez, Jesús (Sociedad Española de Mecánica del Suelo e Ingeniería Geotécnica, 2012)
    Conference report
    Restricted access - publisher's policy