Now showing items 1-20 of 271

    • 3D Modelling of an EPB Tunnel Drive in Mixed Geological Formation 

      Perez Pereira, Thiago (Universitat Politècnica de Catalunya, 2019-06-12)
      Master thesis
      Open Access
      Se simulará, mediante un modelo numérico 3D de elementos finitos, el proceso de excavación y construcción del túnel de la Línea 9 del Metro de Barcelona en el entorno de la zona Franca. Se validará el modelo, reproduciendo ...
    • A 2.5D automatic FEM-SBM method for the evaluation of free-field vibrations induced by underground railway infrastructures 

      Liravi, Hassan; Clot Razquin, Arnau; Arcos Villamarín, Robert (2022)
      Conference report
      Open Access
      This paper presents an efficient method to predict underground railway-induced vibrations. The method uses the finite element method (FEM) to model the railway tunnel structure and the singular boundary method (SBM) to ...
    • A 2.5D coupled FEM–SBM methodology for soil–structure dynamic interaction problems 

      Liravi, Hassan; Arcos Villamarín, Robert; Clot Razquin, Arnau; Conto Quispe, Kenny Fernando; Romeu Garbí, Jordi (Elsevier, 2022-01-01)
      Article
      Open Access
      In this paper, a novel numerical methodology to deal with longitudinally invariant soil–structure interaction problems is proposed. The methodology uses the finite element method to model the structure and the singular ...
    • A 2.5D hybrid SBM-MFS methodology for the evaluation of free-field vibrations induced by underground railway infrastructures 

      Liravi, Hassan; Arcos Villamarín, Robert; Clot Razquin, Arnau; Godinho, Luis; Conto Quispe, Kenny Fernando (2023)
      Conference report
      Restricted access - publisher's policy
      In this paper, a new meshless methodology to predict underground railway-induced vibrations is presented. In contrast to previous approaches, the proposed method uses meshless methods to model both the railway tunnel ...
    • A bridge foundation analysis 

      Puig Damians, Ivan; Olivella Pastallé, Sebastià; Josa Garcia-Tornel, Alejandro (Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-15)
      Conference lecture
      Open Access
      This document presents the analysis with CODE_BRIGHT finite element program of a geotechnical case. The problem analyzed is related to a mechanical analysis of soil structure interaction considering different alternatives ...
    • A constitutive model for partially saturated soils 

      Alonso Pérez de Agreda, Eduardo; Gens Solé, Antonio; Josa Garcia-Tornel, Alejandro (Institution of Civil Engineers (http://www.ice.org.uk/), 1990)
      Article
      Open Access
      The Paper presents a constitutive model for describing the stress-strain behaviour of partially saturated soils. The model is formulated within the framework of hardening plasticity using two imdependent sets of stress ...
    • A constitutive model for soft clayey rocks that includes weathering effects 

      Pinyol Puigmartí, Núria Mercè; Vaunat, Jean; Alonso Pérez de Agreda, Eduardo (Institution of Civil Engineers (http://www.ice.org.uk/), 2007)
      Article
      Open Access
      Microstructural and mineralogical observations of claystones reveal the presence of clay aggregates bonded by a skeleton of inert minerals such as calcium carbonate. The behaviour of these natural materials evolves from ...
    • A densification mechanism to model the mechanical effect of methane hydrates in sandy sediments 

      de la Fuente Ruiz, María; Vaunat, Jean; Marín Moreno, Héctor (2020-04)
      Article
      Open Access
      Recent pore-scale observations and geomechanical investigations suggest the lack of true cohesion in methane hydrate-bearing sediments (MHBSs) and propose that their mechanical behavior is governed by kinematic constrictions ...
    • A gis-based multivariate statistical analysis for landslide susceptibility assessment in Benevento province, Italy 

      Parisi, Sara (Universitat Politècnica de Catalunya, 2008-03)
      Minor thesis
      Open Access
      Se plantea llevar a cabo la evaluación de la susceptibilidad de deslizamientos del área de estudio a partir del anàlisis de un conjunto de parámetros de terreno (pendiente, litología, àrea, longitud y pendiente de cuenca, ...
    • A new approach to evaluate the soil disturbance due to tube sampling 

      Gens Solé, Antonio; Monforte Vila, Lluís; Arroyo Alvarez de Toledo, Marcos; Carbonell Puigbó, Josep Maria (2022)
      Conference report
      Restricted access - publisher's policy
      Disturbance of specimens recovered by tube sampling from boreholes is an enduring relevant problem in geotechnical engineering. Practice has evolved slowly in this area, partly because the main research method applied, ...
    • A new approach to model geomaterials with heterogeneous properties in thermo-hydro-mechanical coupled problems 

      Rodríguez Dono, Alfonso; Zhou, Yunfeng; Olivella Pastallé, Sebastià (Elsevier, 2023-07)
      Article
      Open Access
      The main objective of this article is to present a new approach to model coupled thermo-hydro-mechanical problems considering geomaterials with heterogeneous properties. This approach has been implemented in the software ...
    • A nonlocal elasto-plastic model for structured soils at large strains for the particle finite element method 

      Monforte Vila, Lluís; Ciantia, Matteo Oryem; Carbonell Puigbó, Josep Maria; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (Springer, 2021)
      Part of book or chapter of book
      Restricted access - publisher's policy
      This work presents a robust and mesh-independent implementation of an elasto-plastic constitutive model at large strains, appropriate for structured soils, into a Particle Finite Element code specially developed for ...
    • A particle method for the simulation of ground excavation processes 

      Carbonell Puigbó, Josep Maria; Suárez Arroyo, Benjamín; Oñate Ibáñez de Navarra, Eugenio (2009)
      Conference lecture
      Open Access
    • Amortiguamiento en suelos compactados 

      Poucell Mier y Terán, Jorge (Universitat Politècnica de Catalunya, 2016-09-23)
      Master thesis
      Open Access
      Los ensayos de laboratorio son muy importantes en la ingeniería geotécnica ya que en ellos se pueden conocer el comportamiento del suelo a pequeña escala. Y desde ese punto de vista, poder saber aquellos parámetros que ...
    • An empirical approach to rockfall fragmentation 

      Corominas Dulcet, Jordi; Ruiz Carulla, Roger; Mavrouli, Olga Christina (2015)
      Conference lecture
      Restricted access - publisher's policy
      The impact-induced rock mass fragmentation in a rockfall is analyzed by comparing the In Situ Block Size Distribution (IBSD) at the cliff face and the Rockfall Block Size Distribution (RBSD) on the slope. The IBSD is ...
    • An energy flow study of a double-deck tunnel under quasi-static and harmonic excitations 

      Clot Razquin, Arnau; Romeu Garbí, Jordi; Arcos Villamarín, Robert (2016-10)
      Article
      Open Access
      This paper presents a comparison between the vibration energy flow radiated by a double-deck tunnel and the one radiated by a simple tunnel when both are excited by constant or by harmonic moving loads. For both cases, the ...
    • An interior - point algorithm for hyper-plastic models for soils 

      Samat, Sergio; Vaunat, Jean; Gens Solé, Antonio (2009)
      Conference report
      Open Access
      In numerical analysis of geotechnical problems it is often necessary to use sophisticated elastoplastic constitutive models. Particularly, the presence of friction as the fundamental mechanism to dissipate energy provides ...
    • An unconditionally stable explicit finite element algorithm for coupled hydromechanical problems of soil mechanics in pseudo-static conditions 

      Monforte Vila, Lluís; Carbonell Puigbó, Josep Maria; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (2022-11)
      Article
      Open Access
      In this article, we present a novel explicit time-integration algorithm for the coupled hydromechanical soil mechanics problems in a pseudo-static regime. After introducing the finite element discretization, the semidiscrete ...
    • Analyse multi-échelle de l'approche énergétique de la rupture des grains au sein de matériaux granulaires 

      Salami, Younes (Universitat Politècnica de Catalunya, 2017-01-11)
      Doctoral thesis
      Open Access
      Covenantee:   École centrale de Nantes
      Au cours des dernières années, les analyses multi-échelles en mécanique des sols granulaires deviennent de plus en plus répandues. L’avantage de ce type d’approches réside dans leur capacité à établir un lien entre les ...
    • Analysis of a full scale in situ test simulating repository conditions 

      Gens Solé, Antonio; García Molina, Ángel; Olivella Pastallé, Sebastià; Alonso Pérez de Agreda, Eduardo; Huertas, F. (Wiley, 1998)
      Article
      Open Access
      Coupled thermo-hydro-mechanical (THM) analyses have been used to examine the interacting phenomena associated with the simultaneous heating and hydration of an engineered bentonite barrier placed in a drift excavated in ...