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Ara es mostren els items 50-59 de 59

    • One-dimensional cracking model in clayey soils 

      Ávila, G.E.; Ledesma Villalba, Alberto; Lloret Morancho, Antonio (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      It is difficult to formulate a general model to capture cracking initiation and evolution, because there are multiple factors that influence these processes. In order to simplify the evaluation and get more insight on the ...

    • Parameter and variance estimation in geotechnical backanalysis using prior information 

      Ledesma Villalba, Alberto; Gens Solé, Antonio; Alonso Pérez de Agreda, Eduardo (Wiley, 1996)
      Article
      Accés obert
      A probabilistic framework to perform inverse analysis of geotechnical problems is presented. The formulation allows the incorporation of existing prior information on the parameters in a consistent way. The method is ...

    • Patterns of cracking in soils due to drying and wetting cycles 

      Ledesma Villalba, Alberto; Cordero Arias, Josbel Andreina; Cuadrado Cabello, Agustín; Prat Catalán, Pere (CRC Press, 2014)
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      Accés restringit per política de l'editorial
      There is a well reported evidence of cracking in clayey or silty soils when drying. Shrinkage in the soil mass and also boundary conditions generate a nonhomogeneous stress state locally producing tensile stresses and ...

    • Protecting sensitive constructions from tunnelling: the case of World Heritage buildings in Barcelona 

      Ledesma Villalba, Alberto; Alonso Pérez de Agreda, Eduardo (Thomas Telford, 2017-10)
      Article
      Accés obert
      Construction of the tunnel for the high-speed Madrid–Barcelona–France railway link across central Barcelona became a major technical and social challenge due to the impact of the tunnel on nearby historic buildings (two ...

    • Protecting surface and buried structures from tunnelling using pile walls: a prediction model 

      Franza, Andrea; Losacco, Nunzio; Ledesma Villalba, Alberto; Viggiani, Giulia M.B.; Jimenez Rodríguez, Rafael (2021-10)
      Article
      Accés obert
      When tunnelling poses excessive risks for buildings and buried foundations, a pile row barrier may shield the existing structure from ground movements. This paper presents a three-dimensional linear elastic prediction ...

    • Soil desiccation cracks as a suction-contraction process 

      Cordero Arias, Josbel Andreina; Useche, G; Prat, P. C.; Ledesma Villalba, Alberto; Santamarina, J. C. (Institution of Civil Engineers (ICE), 2017-12)
      Article
      Accés obert
      Recent macro- and particle-scale advances in unsaturated soil behaviour have led to an enhanced understanding of the effects of moisture changes on soil response. This research examines desiccation cracks as a suction–co ...

    • Soil surface boundary condition in desiccating soils 

      Cuadrado Cabello, Agustín; Encalada López, David Alejandro; Ledesma Villalba, Alberto; Prat Catalán, Pere (The Icelandic Geotechnical Society (IGS), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Soils undergoing desiccation exhibit shrinkage and eventually cracking. That may become an environmental problem in practical applications. From a Geotechnical perspective, it is possible to solve the corresponding ...

    • THM analysis of a soil drying test in an environmental chamber: the role of boundary conditions 

      Cuadrado Cabello, Agustín; Najdi, Abdallah; Ledesma Villalba, Alberto; Olivella Pastallé, Sebastià; Prat Catalán, Pere (Elsevier, 2022-01)
      Article
      Accés obert
      This paper presents the numerical analysis of an experimental soil drying test carried on an initially slurry soil specimen with controlled temperature and relative humidity in a laboratory environmental chamber. The imposed ...

    • Toronto-York Spadina subway extension tunnelling under Schulich Building 

      Ramos Schneider, Gonzalo; García Molina, Ángel; Ledesma Villalba, Alberto; Raveendra, Ravi; Polo Orodea, Tomás (2019-02)
      Article
      Accés obert
      Tunnelling under the York University Schulich Building was one of the milestones of the Toronto-York Spadina Subway Extension Project. The challenge was to bore the tunnel under a flagship building only one diameter below ...

    • Towards the development on new high capacity tensiometers capable of measuring soil matric suction beyond 3 MPa 

      Mendes, Joao; Najdi, Abdallah; Encalada López, David Alejandro; Prat Catalán, Pere; Ledesma Villalba, Alberto (2022-09)
      Article
      Accés obert
      High capacity tensiometers (HCT) are the only type of sensors in existence that can measure soil matric suction directly and are regarded to be the most accurate and reliable technique for the study of suction evolution ...