Estudio del comportamiento de vigas compuestas de hormigón y acero mediante simulación numérica

Hernández, Hildemar; Bonilla, Jorge; Rodríguez, G

doi:10.4067/s0718-50732014000100001

Cited by 5 publications

(10 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Proper modelling of composite beams [14] subjected to operational interactions where the concrete slab is in tension is a difficult task which is more complex than the case of the compression slab [31]. This results, in large part, from the problems in estimating the stiffness of the reinforced concrete part of the element in tension, including the determination of interaction of the concrete in tension with the reinforcement [37].…”

Section: Numerical Model Of the Tested Composite Beammentioning

confidence: 99%

See 1 more Smart Citation

Experimental and numerical studies of continuous composite beams taking into consideration slab cracking

Śledziewski¹

2016

EiN

View full text Add to dashboard Cite

IntroductionSpecial requirements with regard to the theory of composite structures and their creative shaping make them one of the most interesting solutions for load-carrying structures in the construction technology. The constituent parts of the cross section are made of materials with different Young's moduli, which interact with each other through the use of fasteners. These elements are joined to maximise both their strength properties and operating characteristics with respect to their location within the feature.The greatest benefits are currently visible in the application of steel-concrete composite structures [24]. These are mainly used in bridge construction but are also used in other areas of the construction industry, especially in the industrial construction [16].The importance of the issue of cracking in the context of continuous composite structures is still a topic of discussion. Although the structure safety is not compromised in any way, its operating lifespan is significantly affected. Non-structural cracks can cause damage to insulation and -in the long -cause corrosion of the reinforcement, as well. Therefore, it must be remembered that the operating lifespan of the structure is one of the basic assumptions in the design process and it significantly affects the adopted design solutions and materials [26]. The feature's operating lifespan is maintained when the structure fulfils its function within a given time both for its load-bearing capacity (ultimate limit states) and serviceability (limit states related to the reduction of cracks, stresses and deflections). The correct structure design ensures that it is fit for purpose for at least the period of expected operating lifespan. The requirements for the bridge structure operating lifespan are particularly high, though. In accordance with [26], bridges are classified as the S5 design category (class), which means the approximate design lifetime of at least 100 years.Nowadays, in order to meet the increasingly stringent operating lifespan criteria, the design phase for composite bridges should take into account non-structural concrete cracking and the change of its stiffness between the cracks Eksploatacja i NiEzawodNosc -MaiNtENaNcE aNd REliability Vol.18, No. 4, 2016 579 sciENcE aNd tEchNology 579[28] in the ultimate limit state and serviceability limit state. Concrete cracking affects the stiffness of the composite section and can cause an overload of the steel section. The change in the stiffness causes redistribution of excessive bending moments along the length of the continuous beam. The problem of the behaviour of the composite structure with the cracked concrete slab is complicated and not fully explored. For this reason, the stiffness of the concrete in tension in often overlooked in the design of civil engineering structures. This approach leads to an irrational assessment of the load-bearing capacity and serviceability of the composite structure, which causes a reduction in the lifetime of the feature [36].This problem also occur...

show abstract

Section: Numerical Model Of the Tested Composite Beammentioning

confidence: 99%

“…These studies usually focused on the strength limit of the entire composite section [13,14] or its individual parts [3,10], the concrete slab cracking [12,17] and the methods of controlling the cracking width [32,33], the symptoms of the damage [5], the application of compression [6], as well as the joining flexibility [19,35].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies of continuous composite beams taking into consideration slab cracking

Śledziewski¹

2016

EiN

View full text Add to dashboard Cite

show abstract

“…By reducing the size of the elements a better approximation of the model is achieved in relation to the experimental one (see Table 2). (Yang et al, 2007) Transversal section A bilinear model is adopted to simulate the steel behavior, according to the Von Mises failure approach, which has been successfully used in the works of (Hernández, et al, 2014) and (Bonilla et al, 2015) dealing with modeling of composite structures of concrete and steel. This model was also used by (Rodríguez et al, 2012) (ABAQUS, 2014).…”

Section: Shows That the Best Approximation To The Real Physical Test mentioning

confidence: 99%

“…The concrete behavior is simulated with a plasticdamage model developed by (Lubliner et al, 1989), modified by (Lee and Fenves, 1998), which is available in ABAQUS (2014), and used in the studies of (Hernández et al, 2014) and (Bonilla et al, 2015) for the numerical modeling of composite structures, and recently, by (Demit et al, 2016) (Yang et al, 2007) Figure 5a) and beam L10-60 (see Figure 5b) allows demonstrating that the increase of the vertical reinforcement amount has a greater influence on the beams presenting a higher shear span-effective depth ratio (a/d). (Lee et al, 2008) …”

Section: Figure 2 Tridimensional Finite Elements Used To Discretize mentioning

confidence: 99%

Modelación numérica de vigas continuas de gran peralto de hormigón armado

2016

View full text Add to dashboard Cite

This paper presents a study of the behavior of reinforced concrete continuous deep beams by numerical simulation Keywords: Continuous deep beams, structural behavior, numerical models, parametric study, load capacity ResumenEn este trabajo se realiza un estudio del comportamiento de las vigas continuas de gran peralto de hormigón armado mediante simulación numérica. Los resultados obtenidos del análisis numérico son calibrados y validados a partir de resultados experimentales existentes en la bibliografía internacional. En la modelación se considera un modelo bilineal con criterio de rotura de Von Mises para el acero de refuerzo y un Modelo de Daño Plástico para el hormigón, lográndose buena correspondencia entre los resultados numéricos y experimentales de referencia. Esta adecuada calibración del esquema físico-mecánico de la experimentación permite estudiar numéricamente diferentes factores geométricos y configuraciones del refuerzo. Del análisis numérico se observa la influencia del refuerzo principal y vertical en la capacidad de carga de estas estructuras, siendo más significativo el aporte del refuerzo vertical en vigas con mayor relación luz de cortante-peralto efectivo (a/d). Se analizan esquemas de vigas continuas de gran peralto con aberturas circulares en el alma, mostrándose las posiciones favorables para la ubicación de estas aberturas y su influencia directa en la reducción de la capacidad de carga para esquemas con carga concentrada y con carga distribuida.Palabras clave: Vigas continuas de gran peralto, comportamiento estructural, modelos numéricos, estudios paramétricos, capacidad de carga

show abstract

“…The appropriate modelling of composite structures [1] and reinforced concrete structures [2] is a major challenge, in particular due to the material properties of concrete. Unlike steel, concrete is a material that -in compression -behaves in a non-linear way from the very beginning.…”

Section: Introductionmentioning

confidence: 99%

Selection of appropriate concrete model in numerical calculation

Śledziewski

2017

ITM Web Conf.

View full text Add to dashboard Cite

Abstract. Modelling of composite and reinforced concrete structures requires very precise determination of material parameters and constitutive relations between strain and stress. Erroneous selection of the dependencies and incorrect modelling, in particular, of the performance of concrete in tension may generate results in finite element method programs, that are far from the results obtained in an experiment. Using the example of a concrete damage plasticity model, based on fracture mechanics, this paper describes the physical interpretation and the method of the selection of parameters necessary for the appropriate modelling of concrete in a complex stress state. The correctness of the assumed description of concrete was verified on the basis of results of laboratory tests. A comparative analysis of the experimental and numerical results showed that the application of the concrete damage plasticity model allowed correct determination of the concrete element damage mechanisms for each level of strain.

show abstract

Estudio del comportamiento de vigas compuestas de hormigón y acero mediante simulación numérica

Cited by 5 publications

References 3 publications

Experimental and numerical studies of continuous composite beams taking into consideration slab cracking

Experimental and numerical studies of continuous composite beams taking into consideration slab cracking

Modelación numérica de vigas continuas de gran peralto de hormigón armado

Selection of appropriate concrete model in numerical calculation

Contact Info

Product

Resources

About