Seismic performance of reinforced concrete frame structures strengthened with FRP laminates using a reliability-based advanced approach

Ali, Osama; Bigaud, David; Riahi, Hassen

doi:10.1016/j.compositesb.2017.11.051

Cited by 25 publications

(8 citation statements)

References 38 publications

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“…As with other light-weight structural systems, light-frame timber buildings take advantage of the low seismic lateral loads that are induced [4][5][6]. In timber light-frame buildings, the typical lateral-force-resisting system is formed by the timber shear walls.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Seismic Performance of Light-Frame Timber Buildings Using a Detailed Model

et al. 2022

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Timber structures have gained interest for the construction of mid-rise buildings, but their seismic performance is still a matter under development. In this study, a numerical analysis of the seismic performance of light-frame timber buildings is developed through a highly detailed model using parallel computing tools. All of the lateral-load-resisting system components and connections are modeled. Combinations of lateral load capacity distributions in structures of one, three, and five stories are studied in order to assess the effects on the global performance of different triggered failure modes through nonlinear static and dynamic analyses. The results suggest that shear bracket connections and sheathing-to-framing connections control the buildings’ responses, as well as the failure mode. For a ductile response, the lateral displacement must be dominated by the in-plane wall distortion (racking); therefore, the system must be provided with a story shear sliding stiffness and load capacity at least twice that of the walls. Furthermore, based on the pushover capacity curves, the performance limits are proposed by evaluating the stiffness degradation. Finally, the effect of the mobilized failure mode on the structural fragility is analyzed. Even though standard desktop PCs are used in this research, significant reductions in the computation effort are achieved.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Seismic Performance of Light-Frame Timber Buildings Using a Detailed Model

et al. 2022

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“…However, including all the sources of uncertainty in a model might increase the problem size and its computational time and cost. On the other hand, given the maximum construction tolerances required by design codes [23], some sources of uncertainty, like geometry, are of less importance at the structural level [21]. Hence, the effects of geometrical parameters were ignored in this study.…”

Section: Methodsmentioning

confidence: 99%

“…Focusing solely on earthquake uncertainties, their study ignored structural uncertainties such as those associated with material properties in order to reduce the size of the optimization problem to a reasonable level. Using a reliability-based approach, Ali et al [21] compared the effects of FRP confinement (in columns) with those of a combined flexural (in beams and columns) and confining (in columns) FRPs in a 3-story RC building. For these two retrofitting options, fragility curves were compared based on the maximum lateral drift of the top story.…”

Section: Introductionmentioning

confidence: 99%

Seismic evaluation of ordinary RC buildings retrofitted with externally bonded FRPs using a reliability-based approach

Mahdavipour

Eslami

Jehel

2020

Composite Structures

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Despite the extensive literature on reinforced concrete (RC) members retrofitted with fiberreinforced polymer (FRP) composites, few studies have employed a reliability-based approach to evaluate the seismic performance of RC buildings in terms of their collapse capacity and ductility. In this study, the performance of a poorly-confined RC building structure is investigated for different FRP retrofitting schemes using different configurations and combinations of wrapping and flange-bonded FRPs, as two well-established techniques. A nonlinear pushover analysis is then implemented with a computational reliability analysis based on Latin Hypercube Sampling (LHS) to determine the collapse capacity and ductility of the case-study structure. The variations in material properties and applied loads are examined using a rational probabilistic procedure. The results demonstrate the effectiveness of the reliability approach as it is capable of providing reliable and accurate comparisons between the retrofitting schemes implemented. In addition, the failure modes of the original and retrofitted frames are scrutinized for a more detailed study. It was found that the failure mode of the casestudy building is remarkably dependent on the variations of both the input parameters and the adopted retrofitting scheme.

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“…Por otro lado en las investigaciones de Todut et al (78,79,80) pusieron a prueba paneles de concreto armado bajo fuerzas laterales cíclicas, fuerzas que se usan para simular los sismos, estas pruebas se realizan con la finalidad de dañar los paneles y luego rehabilitarlos, los autores coincidieron con la idea de aplicar diferentes tipos de fibras para reforzar, como fibra de acero, rejillas de fibra de carbono, rejillas de fibra de vidrio, entre otras, para luego someterlas nuevamente a los esfuerzos mencionados y evaluar que otras fuerzas de sismo puede soportar.…”

Section: Durabilidadunclassified

Una revisión del comportamiento mecánico del concreto con adición de fibras de acero de neumáticos reciclados

Pérez

Carrasco

Bustamante

2022

inycomp

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El concreto en la industria de la construcción es un material muy usado, por lo que se ha venido investigando la manera de innovar los materiales que usualmente se usan para la elaboración del concreto, pero sin alterar las propiedades mecánicas, es decir que sean igual o mejores de lo que usualmente son; por lo que usar material reciclado es una buena opción ya que sería de ayuda en la disminución de la contaminación, disminuiría el uso de materia prima y mejoraría la situación del medio ambiente. El presente artículo tiene como objetivo revisar diferentes investigaciones sobre un material denominado fibras de acero de neumáticos incorporado en el concreto, que permita mejorar las propiedades de trabajabilidad, resistencia a la compresión, flexión y densidad del concreto. Se realizo una búsqueda de 80 artículos de revisión indexados en diferentes bases de datos, además de ser investigaciones publicadas de los últimos 7 años entre el 2015 y 2021, los cuales se dividen de la siguiente manera: 14 de ScienceDirect, 21 de EBSCO, 20 de Sopas y 24 de Web Of Scince, documentos que señalan la importancia de la construcción sostenible y la descripción de las fibras de acero de neumático reciclado. Se reviso los pasos, métodos y técnicas de selección, características y volumen adecuado que debe tener la fibra, después de discutir y analizar los resultados, se llega a la conclusión de que las fibras de acero de neumáticos recalados causan efectos positivos en las características mecánicas del concreto

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Seismic performance of reinforced concrete frame structures strengthened with FRP laminates using a reliability-based advanced approach

Cited by 25 publications

References 38 publications

Numerical Analysis of the Seismic Performance of Light-Frame Timber Buildings Using a Detailed Model

Numerical Analysis of the Seismic Performance of Light-Frame Timber Buildings Using a Detailed Model

Seismic evaluation of ordinary RC buildings retrofitted with externally bonded FRPs using a reliability-based approach

Una revisión del comportamiento mecánico del concreto con adición de fibras de acero de neumáticos reciclados

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