Experimental research on high strength concrete slender columns subjected to compression and biaxial bending forces

Rubio, Luis Pallarés; Bonet, José; Sosa, Pedro F. Miguel; Prada, Miguel Ángel Fernández

doi:10.1016/j.engstruct.2007.12.005

Cited by 39 publications

(26 citation statements)

References 10 publications

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“…After the advent of the high strength concrete (HSC) a large number of slender RC columns has been constructed, and more researchers have given special attention to this subject (Pallarés et al, 2008;Kim and Yang, 1995). Consequently, the development of numerical tools to support the analyses has increased and different numerical models to simulate the failure mechanism have been proposed.…”

Section: Latin American Journal Of Solids and Structures 12 (2015) 52mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In most cases, the variables investigated are the slenderness ratio, concrete strength, steel ratio, boundary conditions, type of cross-section, concrete shrinkage and creep, and eccentricity loading (Kim and Yang, 1995;Claeson and Gylltoft, 1998;Diniz and Frangopol, 2003;Elwood, 2004;Majewski et al, 2008;Pallarés et al, 2008;Leite et al, 2013;Carmona et al, 2013;Bouchaboub and Samai, 2013 After the advent of the high strength concrete (HSC) a large number of slender RC columns has been constructed, and more researchers have given special attention to this subject (Pallarés et al, 2008;Kim and Yang, 1995). Consequently, the development of numerical tools to support the analyses has increased and different numerical models to simulate the failure mechanism have been proposed.…”

Section: Introductionmentioning

confidence: 99%

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Failure behavior modeling of slender reinforced concrete columns subjected to eccentric load

Rodrigues

Manzoli

Bitencourt

et al. 2015

Lat. Am. j. solids struct.

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This work presents a numerical model to simulate the failure behavior of slender reinforced concrete columns subjected to eccentric compression loads. Due to the significant influence of the lateral displacements on the loading state provided by an eccentric load, geometric nonlinearity is considered. The responses of the concrete in tension and compression are described by two scalar damage variables that reduce, respectively, the positive and negative effective stress tensors, which lead to two different damage surfaces that control the dimension of the elastic domain. To describe the behavior of the reinforcements, truss finite elements with elastoplastic material model are employed. Interaction between the steel bars and concrete is modeled through the use of interface finite elements with high aspect ratio and a damage model designed to describe the bond-slip behavior. The results showed that the numerical model is able to represent the nonlinear behavior of slender concrete columns with good accuracy, taking into account: formation of cracks; steel yielding; crushing of the concrete in the compressive region; and interaction between rebars and concrete. KeywordsReinforced concrete columns: nonlinear analysis; continuum damage model; interface finite element.Failure behavior modeling of slender reinforced concrete columns subjected to eccentric load INTRODUCTIONDue to the important role played by reinforced concrete (RC) columns as structural elements, there are a number of papers available in the literature investigating their behavior. In most cases, the variables investigated are the slenderness ratio, concrete strength, steel ratio, boundary conditions, type of cross-section, concrete shrinkage and creep, and eccentricity loading (Kim and Yang, 1995;Claeson and Gylltoft, 1998;Diniz and Frangopol, 2003;Elwood, 2004;Majewski et al., 2008;Pallarés et al., 2008;Leite et al., 2013;Carmona et al., 2013;Bouchaboub and Samai, 2013 After the advent of the high strength concrete (HSC) a large number of slender RC columns has been constructed, and more researchers have given special attention to this subject (Pallarés et al., 2008;Kim and Yang, 1995). Consequently, the development of numerical tools to support the analyses has increased and different numerical models to simulate the failure mechanism have been proposed. For instance, in order to investigate the behavior of RC columns under eccentric compression load, with consideration of cracks, Majewski et al. (2008) proposed an approach based on elasto-plasticity with non-local softening model. Recently, Carmona et al. (2013) developed a fracture mechanics model to describe the buckling behavior of lightly concrete columns, wherein the structural response is a result of the propagation of one single crack at the column's central region. Using the finite difference method, Bouchaboub and Samai (2013) proposed an approach to simulate the behavior of slender high strength RC columns under combined biaxial and axial compression. For all the aforementioned...

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Section: Latin American Journal Of Solids and Structures 12 (2015) 52mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Failure behavior modeling of slender reinforced concrete columns subjected to eccentric load

Rodrigues

Manzoli

Bitencourt

et al. 2015

Lat. Am. j. solids struct.

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“…Para identificar el modo de fallo en la situación de carga máxima (Agotamiento o Inestabilidad) se ha aplicado el criterio basado en fuerzas propuesto por Pallares et al (2008) [49], según el cual para cada ensayo se representa en un mismo gráfico el esfuerzo axil aplicado en el soporte y el momento flector total (teniendo en cuenta los efectos de segundo orden) en la sección más desfavorable frente al desplazamiento. Para diferenciar entre el agotamiento (A) y la inestabilidad (I) del soporte se aplica el siguiente criterio: el tipo de fallo es por inestabilidad si en el instante en que se alcanza la carga máxima axial (N max ) el momento flector total es creciente (figura 5.12.a).…”

Section: 41a Modo De Fallo En Situación De Carga Máxima (N Max )unclassified

“…Con el fin de determinar con más precisión el tipo de fallo, además de aplicar el criterio propuesto por Pallares et al (2008) [49], se ha analizado para la situación de carga máxima y carga última, el estado de deformaciones en la sección crítica del soporte (tabla 5.4) identificándose los siguientes modos de fallo (tabla 5.3): a) El modo de fallo por inestabilidad puede clasificarse en tres tipos:…”

Section: 41a Modo De Fallo En Situación De Carga Máxima (N Max )unclassified

Estudio teórico-experimental de soportes esbeltos de hormigón armado sometidos a compresión con excentricidades y ángulos de esviaje desiguales en sus extremos

Leite¹,

Carlos²

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Parametric investigation on behaviour of carbon fiber reinforced polymers wrapped reinforced concrete columns under eccentric loads

Fareed

Ayub

Khan

2022

Materialwissenschaft Werkst

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The use of carbon fiber reinforced polymer (CFRP) has proved to be significantly efficient in improving the overall behaviour of reinforced concrete columns. The use of high‐strength concrete in columns not only reduces the size but also gives adequate durability to the structure. The behaviour of reinforced concrete columns depends on numerous parameters, including concrete compressive strength, percentage of steel, cross‐section dimensions, ties spacing and the slenderness ratio. In this work the following parameters are investigated: Concrete compressive strength, percentage of steel, and the slenderness ratio. The focus of experimental investigation was to study the influence of carbon fiber reinforced polymer wrapping on the behaviour of plain concrete columns. Following the experimental investigation, a detailed numerical investigation was conducted to study the influence of the above parameters on the behaviour of eccentrically loaded plain and reinforced concrete columns. The influence of carbon fiber reinforced polymer wrapping on the overall performance was also studied using the available models for predicting the load‐moment interaction of columns to confirm the findings of the numerical investigations. Based on the detailed experimental and numerical investigation it was found that the concrete compressive strength significantly influences the overall behaviour of the reinforced concrete columns subjected to eccentric loadings.

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Experimental research on high strength concrete slender columns subjected to compression and biaxial bending forces

Cited by 39 publications

References 10 publications

Failure behavior modeling of slender reinforced concrete columns subjected to eccentric load

Failure behavior modeling of slender reinforced concrete columns subjected to eccentric load

Estudio teórico-experimental de soportes esbeltos de hormigón armado sometidos a compresión con excentricidades y ángulos de esviaje desiguales en sus extremos

Parametric investigation on behaviour of carbon fiber reinforced polymers wrapped reinforced concrete columns under eccentric loads

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