Exploració per tema "Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó"
Ara es mostren els items 1-20 de 1082
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1D and 3D analysis of anchorage in naturally corroded specimens
(Université Laval, 2014)
Text en actes de congrés
Accés obertCorrosion of reinforcement causes cracking and spalling of concrete cover which affects the bond; this is a crucial factor in deterioration of concrete structures. Earlier, tests have been carried out on specimens with ... -
3D imaging techniques for characterising microcracks in cement-based materials
(2021-02)
Article
Accés obertConcrete inherently contains pores and microcracks that can adversely impact its mechanical properties and long-term durability. However, characterising microcracks is difficult due to their complex, multiscale and ... -
3D numerical model of a confined fracture tests in concrete
(2013)
Text en actes de congrés
Accés obertThe paper deals with the numerical simulation of a confined fracture test in concrete. The test is part of the experimental work carried out at ETSECCPB-UPC in order to elucidate the existence of a second mode of fracture ... -
3D zero-thickness interface model for fracture of cement-based materials with chemical degradation
(2022-03)
Article
Accés obertIn the framework of the Finite Element Method, zero-thickness interface elements have been widely used to model fracturing processes in quasi-brittle materials in a broad variety of problems. In particular, interface ... -
3D-mesomechanical analysis of external sulfate attack in concrete
(2017)
Text en actes de congrés
Accés obertThe present study focuses on degradation of concrete by external sulfate attack. The numerical model developed by the MECMAT/UPC group, incorporates coupled C-M analysis using a meso-mechanical approach with discrete ... -
A 3D FEM model for floating wind turbines support structures
(2017-10)
Article
Accés obertThe relevance of the interaction between the structural stiffness and the wind turbine dynamics are well known by the industry from decades of expertise. However, the novel floating concepts are commonly designed by tools ... -
A computational model for progressive cracking in large dams due to the swelling of concrete
(1990-09)
Article
Accés obertThe paper presents a computational model for the analysis of large concrete gravity dams subjected to severe damage due to internal actions. It has been observed in several operating concrete dams that the combined effects ... -
A frame element model for the analysis of reinforced concrete structures under shear and bending
(2010-10-01)
Article
Accés restringit per política de l'editorialModeling the response of reinforced concrete structures under combined shear and normal forces involves handling the anisotropic behavior that takes place in the post-cracked and ultimate ranges. Current 2D (plane-stress ... -
A framework for robustness assessment in the context of corroded RC structures
(CRC Press, 2010)
Text en actes de congrés
Accés restringit per política de l'editorialStructural robustness is an emergent concept related to the structural response to damage. At the present time, robustness is not well defined and much controversy still remains around this subject. Even if robustness has ... -
A laminated structural finite element for the behavior of large non-linear reinforced concrete structures
(2016-10)
Article
Accés obertIn order to correctly predict the kinematics of complex structures, analysis using three-dimensional finite elements (3DFEs) seems to be the best alternative. However, simulation of large multi-layered structures with many ... -
A limit state design approach for hybrid reinforced concrete column-supported flat slabs
(Wiley (John Wiley & Sons), 2022-12)
Article
Accés obertHybrid reinforced technology (combination of steel reinforcing bars and fibers) can be considered as a competitive alternative to the already existing solutions for the construction of column-supported flat slabs. Constructed ... -
A local constitutive model for the discrete element method: application to geomaterials and concrete
(Springer, 2015-06)
Article
Accés obertThis paper presents a local constitutive model for modelling the linear and non linear behavior of soft and hard cohesive materials with the discrete element method (DEM). We present the results obtained in the analysis ... -
A model for the analysis of concrete dams due to environmental thermal effects
(1996-07)
Article
Accés obertIn this article, an analytical model is presented for the simulation of the thermal behaviour of dams that are subjected to environmental thermal action during service. The method of solution adopted, as well as the ... -
A Model for the analysis of concrete dams due to environmental thermal effects
(Emerald, 1996)
Article
Accés obertIn this article, an analytical model is presented for the simulation of the thermal behavior of dams that are subjected to the environmental thermal action during service. The method of solution adopted as well as the ... -
A new computational method for the assessment of the passive fire protection applied to a composite containership
(2023)
Article
Accés restringit per decisió de l'autorThe current paradigm in ship design is focused in producing ships that are more environmental friendly. Lightweight or advanced materials are the perfect candidate to make ship transportation more efficient, however the ... -
A new concrete plastic-damage model with an evolutive dilatancy parameter
(Elsevier, 2019-04-04)
Article
Accés obertTypical plastic-damage models for concrete use a constant dilatancy parameter. On problems sensitive to confinement and shear softening, this parameter needs ad hoc calibration to fit experimental observations. This makes ... -
A new punching shear mechanical model for reinforced concrete slabs with and without punching reinforcement
(2017)
Text en actes de congrés
Accés restringit per política de l'editorialA punching shear strength mechanical model for RC slabs with and w/o punching reinforcement, based on a previous shear model developed by the authors, is presented. The identified differences between shear and punching ... -
A novel positive/negative projection in energy norm for the damage modeling of quasi-brittle solids
(2018-05)
Article
Accés obertThe asymmetric tensile/compressive material behavior and microcracks closure-reopening (MCR) effects exhibited by quasi-brittle solids are of significant importance to the nonlinear responses of engineering structures under ... -
A plastic-damage model for concrete
(1989)
Article
Accés restringit per política de l'editorialIn this paper a constitutive model based on an internal variable-formulation of plasticity theory for the non-linear analysis of concrete is presented. The model uses a new yield criterion which matches experimental data ... -
A punching shear mechanical model for reinforced concrete flat slabs with and without shear reinforcement
(2018-07)
Article
Accés obertA punching shear strength mechanical model for RC flat slabs with and without shear reinforcement, based on a beam shear model previously developed by the authors, is presented. The differences in resisting actions between ...