Exploració per tema "Mecànica dels sòls"
Ara es mostren els items 1-20 de 273
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3D Modelling of an EPB Tunnel Drive in Mixed Geological Formation
(Universitat Politècnica de Catalunya, 2019-06-12)
Projecte Final de Màster Oficial
Accés obertSe 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)
Text en actes de congrés
Accés obertThis 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
Accés obertIn 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)
Text en actes de congrés
Accés restringit per política de l'editorialIn 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)
Comunicació de congrés
Accés obertThis 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
Accés obertThe 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
Accés obertMicrostructural 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
Accés obertRecent 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
(Universitat Politècnica de Catalunya, 2008-03)
Tesina
Accés obertSe 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)
Text en actes de congrés
Accés restringit per política de l'editorialDisturbance 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
Accés obertThe 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)
Capítol de llibre
Accés restringit per política de l'editorialThis 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
(2009)
Comunicació de congrés
Accés obert -
Amortiguamiento en suelos compactados
(Universitat Politècnica de Catalunya, 2016-09-23)
Projecte Final de Màster Oficial
Accés obertLos 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)
Comunicació de congrés
Accés restringit per política de l'editorialThe 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
Accés obertThis 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)
Text en actes de congrés
Accés obertIn 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
Accés obertIn 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
(Universitat Politècnica de Catalunya, 2017-01-11)
Tesi
Accés obert
Realitzat a/amb: École centrale de NantesAu 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
(Wiley, 1998)
Article
Accés obertCoupled 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 ...