Browsing by Subject "Mecànica dels sòls"
Now showing items 1-20 of 280
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3D Modelling of an EPB Tunnel Drive in Mixed Geological Formation
(Universitat Politècnica de Catalunya, 2019-06-12)
Master thesis
Open AccessSe 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
(2022)
Conference report
Open AccessThis 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
(Elsevier, 2022-01-01)
Article
Open AccessIn 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
(2023)
Conference report
Restricted access - publisher's policyIn 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
(Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-15)
Conference lecture
Open AccessThis 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
(Institution of Civil Engineers (http://www.ice.org.uk/), 1990)
Article
Open AccessThe 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
(Institution of Civil Engineers (http://www.ice.org.uk/), 2007)
Article
Open AccessMicrostructural 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
(2020-04)
Article
Open AccessRecent 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 fracture-based discrete model for simulating creep in quartz sands
(2024-04)
Article
Restricted access - publisher's policyCreep of granular soils is frequently accompanied by grain breakage. Stress corrosion driven grain breakage offers a micromechanically based explanation for granular creep. This study incorporates that concept into a new ... -
A gis-based multivariate statistical analysis for landslide susceptibility assessment in Benevento province, Italy
(Universitat Politècnica de Catalunya, 2008-03)
Minor thesis
Open AccessSe 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
(2022)
Conference report
Restricted access - publisher's policyDisturbance 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
(Elsevier, 2023-07)
Article
Open AccessThe 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
(Springer, 2021)
Part of book or chapter of book
Restricted access - publisher's policyThis 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 nonlocal material point method for the simulation of large deformation problems in brittle soils
(Elsevier, 2024-08)
Article
Restricted access - publisher's policyThis paper investigates the implementation of a nonlocal regularisation of the material point method to mitigate mesh-dependency issues for the simulation of large deformation problems in brittle soils. The adopted ... -
A particle method for the simulation of ground excavation processes
(2009)
Conference lecture
Open Access -
Amortiguamiento en suelos compactados
(Universitat Politècnica de Catalunya, 2016-09-23)
Master thesis
Open AccessLos 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
(2015)
Conference lecture
Restricted access - publisher's policyThe 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
(2016-10)
Article
Open AccessThis 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
(2009)
Conference report
Open AccessIn 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
(2022-11)
Article
Open AccessIn 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 ...
