Ara es mostren els items 1-20 de 1082

    • 1D and 3D analysis of anchorage in naturally corroded specimens 

      Fernández Pérez, Ignacio; Tahershamsi, Mohamed; Marí Bernat, Antonio Ricardo; Bairán García, Jesús Miguel; Lundgren, Karin; Hanjari, Kamyab Zandi; Plos, Mario (Université Laval, 2014)
      Text en actes de congrés
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      Corrosion 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 

      Mac, Monika Jolanta; Yio, Marcus H.N.; Desbois, Guillaume; Casanova Hormaechea, Ignasi; Wong, Hong S.; Buenfeld, Nick R. (2021-02)
      Article
      Accés obert
      Concrete 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 

      Montenegro, Oscar Ivan; Sfer, Domingo; López Garello, Carlos María; Carol, Ignacio (2013)
      Text en actes de congrés
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      The 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 

      Martínez Estévez, Ariadna; Liaudat, Joaquín; López Garello, Carlos María; Carol, Ignacio (2022-03)
      Article
      Accés obert
      In 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 

      Pérez Carreras, Adrià; Riera Bayo, Celia; López Garello, Carlos María; Carol, Ignacio (2017)
      Text en actes de congrés
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      The 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 

      Campos de Moura, André; Molins i Borrell, Climent; Trubat Casal, Pau; Alarcón Fernández, Daniel (2017-10)
      Article
      Accés obert
      The 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 

      Cervera Ruiz, Miguel; Oliver Segura, José; Herrero, E.; Oñate Ibáñez de Navarra, Eugenio (1990-09)
      Article
      Accés obert
      The 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 

      Mohr, Stefen; Bairán García, Jesús Miguel; Marí Bernat, Antonio Ricardo (2010-10-01)
      Article
      Accés restringit per política de l'editorial
      Modeling 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 

      Cavaco, E. S.; Neves, L. A. C.; Casas Rius, Joan Ramon; Huespe, Alfredo Edmundo (CRC Press, 2010)
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      Accés restringit per política de l'editorial
      Structural 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 

      Escudero Torres, Cuauhtemoc; Oller Martínez, Sergio Horacio; Martínez García, Javier; Barbat Barbat, Horia Alejandro (2016-10)
      Article
      Accés obert
      In 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 

      Aidarov, Stanislav; Tošić, Nikola; Fuente Antequera, Albert de la (Wiley (John Wiley & Sons), 2022-12)
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      Accés obert
      Hybrid 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 

      Oñate Ibáñez de Navarra, Eugenio; Zárate Araiza, José Francisco; Miquel Canet, Juan; Santasusana Isach, Miquel; Celigueta Jordana, Miguel Ángel; Arrufat Garcia, Ferran; Gandikota, Varadaraju; Valiullin, Khaydar; Ring, Lev (Springer, 2015-06)
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      Accés obert
      This 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 

      Agulló Fité, Luís; Mirambell Arrizabalaga, Enrique; Aguado de Cea, Antonio (1996-07)
      Article
      Accés obert
      In 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 

      Agulló Fité, Luís; Mirambell Arrizabalaga, Enrique; Aguado de Cea, Antonio (Emerald, 1996)
      Article
      Accés obert
      In 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 

      Pacheco Blázquez, Rafael; Capua, Daniel di; García Espinosa, Julio; Casals, Ovidi; Hakkarainen, Tuula; Tissari, Alexandra; Korkealaakso, Antti (2023)
      Article
      Accés restringit per decisió de l'autor
      The 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 

      Poliotti, Mauro; Bairán García, Jesús Miguel (Elsevier, 2019-04-04)
      Article
      Accés obert
      Typical 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 

      Marí Bernat, Antonio Ricardo; Cladera Bohigas, Antoni; Ribas González, Carlos Rodrigo; Bairán García, Jesús Miguel; Oller Ibars, Eva (2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A 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 

      Wu, Jian-Ying; Cervera Ruiz, Miguel (2018-05)
      Article
      Accés obert
      The 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 

      Lubliner, Jacob; Oliver Olivella, Xavier; Oller Martínez, Sergio Horacio; Oñate Ibáñez de Navarra, Eugenio (1989)
      Article
      Accés restringit per política de l'editorial
      In 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 

      Marí Bernat, Antonio Ricardo; Cladera Bohigas, Antoni; Oller Ibars, Eva; Bairán García, Jesús Miguel (2018-07)
      Article
      Accés obert
      A 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 ...