Exploració per autor "Marí Bernat, Antonio Ricardo"
Ara es mostren els items 54-73 de 110
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Lateral behavior of concrete under uniaxial compressive cyclic loading
(2012-08-28)
Article
Accés restringit per política de l'editorialIn reinforced concrete structures under seismic loading, concrete is subjected to compressive cyclic stress. Although cyclic stress–strain response has been described before, the cyclic behavior of strains in the direction ... -
Life-cycle cost of CFRP and steel prestressed concrete elements
(2023)
Text en actes de congrés
Accés obertCarbon steel reinforcement is vulnerable to corrosion, degrading the structure with time, and has large economic implications for aging infrastructures. CFRP is an alternative in reinforced and prestressed concrete, not ... -
Mechanical model for the shear strength of steel fiber reinforced concrete (SFRC) beams without stirrups
(2020-04)
Article
Accés obertNumerous studies have shown that adding steel fibers to the concrete mixture improves both the shear strength and ductility of reinforced concrete beams. Most current shear design formulations for steel fiber reinforced ... -
Mechanical model for the shear strength of steel fibers reinforced concrete beams (SFRC) without stirrups
(2022)
Text en actes de congrés
Accés obertDespite the numerous studies made showing that the addition of steel fibres to concrete enhances the shear strength of RC beams, current design formulations are still empirical and present large scatter in front of the ... -
Mechanical model for the shear strength prediction of corrosion-damaged reinforced concrete slender and non slender beams
(Elsevier, 2021-11)
Article
Accés obertSteel corrosion in RC structures leads to a reduced reinforcement area, changes in steel mechanical properties, cracking and, eventually, concrete cover spalling, among other phenomena. Stirrups are generally small in ... -
Mechanical model to evaluate steel reinforcement corrosion effects on s-e and fatigue curves. Experimental calibration and validation
(2016-07)
Article
Accés obertAn experimental study to characterise the annular distribution of the mechanical properties throughout the cross-section of TEMPCORE® steel bars is presented. Thereafter a sectional fibre model, which allows obtaining s–e ... -
Método para el dimensionamiento de secciones parcialmente pretensadas con fisuración controlada o fatiga
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialSe dice que una estructura se proyecta con pretensado parcial cuando se permiten tracciones o fisuras de ancho limitado en secciones de hormigón pretensado. Actualmente, este dimensionamiento se reconoce como una solución ... -
Modeling serviceability performance and ultimate capacity of corroded reinforced and prestressed concrete structures
(Wiley, 2022-02)
Article
Accés obertCorrosion reduces the area of reinforcement steel, affects its mechanical properties, the bond properties, and produces concrete cracking. Thus, reduction of the bearing capacity and stiffness, increments of deflections ... -
Modelling the response of reinforced concrete columns under biaxial bending, shear and axial forces
(Civil-Comp Press, 2010)
Text en actes de congrés
Accés restringit per política de l'editorialA full 3D cross-section model is described and used to evaluate the performance of concrete columns. By means of a particular functional equation which ensures internal equilibrium among fibres, and the consideration for ... -
Modelo higro-termo-mecánico para el hormigón expuesto al fuego
(Universitat Politècnica de Catalunya, 2009)
Article
Accés obertEn este artículo se presenta un modelo higro-termo-mecánico para el hormigón expuesto al fuego el cual está basado en la mecánica de medios porosos no saturados de Coussy. Las variables de estado del modelo se derivan de ... -
Modelo higro-termo-mecánico para estructuras de hormigón armado expuestas al fuego
(International Centre for Numerical Methods in Engineering (CIMNE), 2009)
Llibre
Accés obertCuando una estructura de hormigón armado queda expuesta a la acción del fuego se roducen, tanto en el hormigón como en el acer. un conjunto de fenómenos físico-químicos que pueden comprometer la estabilidad de la misma. ... -
Nonlinear analysis of RC beams using a hybrid shear-flexural fibre beam model
(2014-07-07)
Article
Accés restringit per política de l'editorialPurpose: A nonlinear finite element (FE) beam-column model for the analysis of reinforced concrete (RC) frames with due account of shear is presented in this paper. The model is an expansion of the traditional flexural ... -
Nonlinear FE analysis of a full scale in situ test on a RC bridge by means of a 1D layered frame model
(CRC Press. Taylor & Francis Group, 2014)
Text en actes de congrés
Accés obertAssessment, upgrading and strengthening of ageing civil infrastructure is a major task for Europe. The aim is to extend the life-time of existing concrete bridges without loss of safety. Nonlinear finite element analysis ... -
Noves eines per a l'aprenentatge del formigó estructural mitjançant les TIC
(2005-02)
Text en actes de congrés
Accés obertResultat de un conjunt de projectes d’innovació educativa és l’elaboració d’una plataforma web per a la docència del formigó estructural, denominada Hormiweb. L’objectiu d’aquesta és facilitar l’aprenentatge del formigó ... -
Numerical analysis of reinforced concrete beams strengthened in shear by externally bonded (EB) fibre reinforced polymer (FRP) sheets
(2018-05)
Article
Accés restringit per política de l'editorialIn this paper, a fibre beam model previously developed by the authors for the nonlinear analysis of strengthened elements, including the effects of shear, is used to predict the response of reinforced concrete (RC) beams ... -
Numerical simulation since early ages of the RG8 beam test from concrack benchmark by means of a 3D fibre frame model
(International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialThis work presents the numerical analysis of the RG8 test performed by the French research program Concrack2 in 2011. It consisted in a large RC beam specimen loaded in bending after restrained shrinkage. The specimen is ... -
One-way shear design method based on a multi-action model
(2017-09)
Article
Accés restringit per política de l'editorialIt is widely known that the shear strength of a reinforced concrete (RC) or prestressed concrete (PC) beam results from the interaction of different resisting actions. Thus, available simplified shear models emphasize ... -
Orden de tesado en depósitos de hormigón pretensado de pequeña capacidad
(1989-10)
Article
Accés obertLos estudios sistemáticos sobre el orden de tesado en depósitos circulares de hormigón pretensado con armaduras postesas son escasos y más cuando se trata de depósitos de pequeña capacidad. Sin embargo, un estudio adecuado ... -
Performance-based slenderness limits for deflections and reinforcement stresses control in RC beams
(2022)
Text en actes de congrés
Accés obertDue to the complex deformational behavior of cracked RC members, an effective way to ensure the fulfilment of the SLS is to limit the slenderness ratio l/d of the element. In this study, the deformation slenderness limit ... -
Performance-based slenderness limits for deformations and reinforcement stresses control in reinforced concrete beams
(2021-04)
Article
Accés obertLos procedimientos actuales de dimensionamiento a flexión de elementos de hormigón armado, basados en la comprobación de estado límite último (ELU), proporcionan suficiente resistencia para soportar las cargas de diseño ...
