Now showing items 21-40 of 148

    • Analysis of ground movements induced by diaphragm wall installation 

      Garitte, Benoit; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (CRC Press, 2010)
      Conference report
      Restricted access - publisher's policy
      The construction process of diaphragm walls can lead to movements in the surrounding area that are seldom taken into account. However, these movements may be important in situations where soft soils dominate. In this ...
    • Análisis probabilístico de la susceptibilidad de taludes marinos del margen continental Sur-Oeste de la Península Ibérica 

      Collico, Stefano; Arroyo Alvarez de Toledo, Marcos; Urgelés Esclasans, Roger; Gràcia Mont, Eulàlia (2022)
      Conference report
      Open Access
      El margen continental Suroeste de la Península Ibérica es investigado a causa de su frecuente actividad tectónica, en la que se catalogan fenómenos de deslizamiento. Principales retos de la zona de estudio es el desarrollo ...
    • Application of a bonded critical state model to design tunnel support for rockmass bulking 

      Ciantia, Matteo Oryem; Arroyo Alvarez de Toledo, Marcos; Kaiser, P. K. (Institute of Physics (IOP), 2021-09)
      Article
      Open Access
      Gabion-type support is a favoured option to restrain bulking in pillar walls of mine footprint tunnels. It uses closely spaced short reinforcements in tunnel walls (typically fully grouted rebar) in combination with surface ...
    • Application of a critical state model to the Merriespruit tailings dam failure 

      Mánica Malcom, Miguel Ánge; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Monforte Vila, Lluís (2022-04)
      Article
      Open Access
      The use of stress–deformation analyses to evaluate the characteristics of possible static liquefaction events is rapidly becoming the norm for tailings dams exposed to such risk. Ideally, those analyses should be based on ...
    • Applying Bayesian updating to CPT data analysis 

      Collico, Stefano; Pérez, N.; Devincenzi, M.J.; Arroyo Alvarez de Toledo, Marcos (CRC Press, 2018)
      Conference lecture
      Open Access
      Evaluation of geotechnical parameters on a project site is a necessary step in geotechnical engineering. However, due to the inherent variability of soil properties and the lack of data, many unavoidable uncertainties arise ...
    • Automation and control in a submarine drill rig 

      Arriaga, Aldo; Devincenzi, M.; Pérez, N.; Deu, A.; Arroyo Alvarez de Toledo, Marcos (Society for Underwater Technology, 2017)
      Conference report
      Open Access
      Remotely operated submarine drills are gaining acceptance as offshore geotechnical investigation tools for they provide a more convenient and often cheaper solution to geotechnical drilling vessels. The MD500 is an underwater ...
    • Breakage and critical state via DEM 

      Ciantia, Matteo Oryem; O'Sullivan, Catherine; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2019)
      Conference report
      Open Access
      Discrete-element simulations are used to explore the relation between breakage-induced grading evolution and the critical state line position on the compression plane. An efficient model of particle breakage is applied to ...
    • Characterizing a filtered stabilized metallurgical residue with PMT 

      Arroyo Alvarez de Toledo, Marcos; Vargas, Carlos O.; Martínez, Estrella; Salgado, David E. (University of British Columbia (UBC), 2022)
      Conference report
      Open Access
      This paper illustrates how pressuremeter testing may add value to geotechnical characterization of tailing storage facilities (TSF). This is done with reference to results obtained in a campaign on jarosa, a lime-stabilized ...
    • Cimentación directa para eólica marina 

      Arroyo Alvarez de Toledo, Marcos; Alcoverro Bassols, Jordi; Abadías, David; Gens Solé, Antonio (Sociedad Española de Mecánica del Suelo e Ingeniería Geotécnica, 2012)
      Conference report
      Restricted access - publisher's policy
    • Clustering analysis to improve total unit weight prediction from CPTu 

      Collico, Stefano; Arroyo Alvarez de Toledo, Marcos; Devincenzi, M.J.; Rodriguez, A.; Deu Lozano, Amadeu (Taylor & Francis Group, 2022)
      Conference report
      Open Access
      Accurate estimates of soil unit weight are fundamental for correctly post process CPTu data and making use of Soil Behavior Type-based classification systems. Soil-specific and global regressions have been proposed for ...
    • Compression and shear wave propagation in cemented sand specimens 

      Amaral, M.F.; Viana da Fonseca, A.; Arroyo Alvarez de Toledo, Marcos; Cascante, G.; Carvalho, J. (2011)
      Article
      Restricted access - publisher's policy
      Ultrasonic and bender element tests in the laboratory are typically used to measure elastic modulus and damping ratio. However, interpretation of the results is challenging for a variety of reasons, including the influence ...
    • Cone penetration tests in a virtual calibration chamber 

      Arroyo Alvarez de Toledo, Marcos; Butlanska, Joanna; Gens Solé, Antonio; Calvetti, Francesco; Jamiolkowski, Michael (2011)
      Article
      Restricted access - publisher's policy
      A virtual calibration chamber was built using a threedimensional model based on the discrete-element method. The chamber was then filled with a scaled granular equivalent of Ticino sand, the material properties of which ...
    • Coupled CFD–DEM method for undrained biaxial shear test of methane hydrate bearing sediments 

      Jiang, Mingjing; Shen, Zhifu; Zhou, Wei; Arroyo Alvarez de Toledo, Marcos; Zhang, Wangcheng (2018-11)
      Article
      Open Access
      Methane hydrate (MH), a potential source of future energy, is extensively deposited in marine sediments. It is essential to understand the mechanical properties of methane hydrate bearing sediments (MHBS) for applications ...
    • Coupled effective stress analysis of insertion problems in geotechnics with the Particle Finite Element Method 

      Monforte Vila, Lluís; Arroyo Alvarez de Toledo, Marcos; Carbonell Puigbó, Josep Maria; Gens Solé, Antonio (Elsevier, 2018-09)
      Article
      Open Access
      This paper describes a computational framework for the numerical analysis of quasi-static soil-structure insertion problems in water saturated media. The Particle Finite Element Method is used to solve the linear momentum ...
    • DEM examination of SPT correction factors 

      Zhang, Ningning; Arroyo Alvarez de Toledo, Marcos; Ciantia, Matteo Oryem; Gens Solé, Antonio (2021-06)
      Article
      Open Access
      The Standard Penetration Test (SPT) is the most widely used method for dynamic testing of soils. The test is simple and robust but difficult to control and not fully standardized. As a result, experimental results typically ...
    • DEM modelling of a double-porosity crushable granular material 

      Ciantia, Matteo Oryem; Arroyo Alvarez de Toledo, Marcos; Butlanska, Joanna; Gens Solé, Antonio (CRC Press, 2014)
      Conference report
      Restricted access - publisher's policy
      The effect of grain crushing during one dimensional compression and triaxial compression tests is investigated in a double-porosity granular material using the Discrete Element Method (DEM). Experimental tests results from ...
    • DEM modelling of cone penetration tests in a double-porosity crushable granular material 

      Ciantia, Matteo Oryem; Arroyo Alvarez de Toledo, Marcos; Butlanska, Joanna; Gens Solé, Antonio (2016-03)
      Article
      Open Access
      A three-dimensional discrete element model is used to investigate the effect of grain crushing on the tip resistance measured by cone penetration tests (CPT) in calibration chambers. To do that a discrete analogue of pumice ...
    • DEM modelling of dynamic penetration in granular material 

      Zhang, Ming; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Ciantia, Matteo Oryem (CRC Press, 2018)
      Conference lecture
      Restricted access - publisher's policy
      Dynamic penetration has been widely employed in some site investigation procedures and for the installation of driven piles. A 3-dimensional discrete element method model has been developed to simulate dynamic rod penetration ...
    • DEM simulation of soil-tool interaction under extraterrestrial environmental effects 

      Jiang, Mingjing; Xi, Banglu; Arroyo Alvarez de Toledo, Marcos; Rodríguez Dono, Alfonso (2017-06)
      Article
      Open Access
      In contrast to terrestrial environment, the harsh lunar environment conditions include lower gravity acceleration, ultra-high vacuum and high (low) temperature in the daytime (night-time). This paper focuses on the effects ...
    • Design control and monitoring of a jet grouted excavation bottom plug 

      Eramo, N.; Modoni, Giuseppe; Arroyo Alvarez de Toledo, Marcos (CRC Press/Balkema, 2012)
      Conference report
      Restricted access - publisher's policy
      Jet grouting is adopted in different geotechnical conditions to ensure provisional earth retaining and waterproofing functions at the bottom and walls of excavations. Despite careful theoretical models avail-able to predict ...