Strengthening of reinforced concrete shear walls with openings using carbon fiber-reinforced polymers

Husain, M.; Eisa, Ahmed S.; Hegazy, Mohamed

doi:10.1007/s40091-019-0216-6

Cited by 25 publications

(11 citation statements)

References 19 publications

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“…The eccentricity is a small positive number defining the rate in which the hyperbolic flux approaches its asymptote. The default value in the literature is 0.1, almost undisputed [18,19].…”

Section: Constitutive Modelsmentioning

confidence: 99%

Calibration of Concrete Damaged Plasticity Model parameters for shear walls

2021

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Reinforced concrete structures are relatively complex to analyze, with nonlinear effects like cracking, crushing, steel yielding, aggregate interlock, dowel effect, concrete-rebar interaction and so on. The concrete damaged plasticity CDP model is a consolidated smeared-crack model which accounts for multiaxial behavior with good agreement to experimental results. One particular relevant application which benefits greatly from such feature is the shear wall, as shear stress significantly influences its overall behavior, therefore multiaxial constitutive models and three-dimensional finite elements usage consist in a fitting modeling approach. Reinforced concrete shear walls are structures especially useful for lateral force-resisting systems, as they provide ductility, stiffness and strength. Albeit CDP is widely applied, its parameters are not consensus in the literature, which represents a relevant research gap. The present work considers and compares CDP parameters from relevant literature, in order to calibrate those parameters for the case of reinforced concrete shear walls. To this purpose, four wall experiments related in the bibliography are modeled using solid finite elements for concrete and trusses for rebars using commercial package ABAQUS. All walls are flexure-controlled with aspect ratio greater than 2.0. By varying those parameters and comparing obtained force vs. displacement curves and interesting values attained, like yield lateral force and displacement, stiffness and maximum lateral force, it is settled a set of parameters with acceptable response focusing in the post-peak response based on the lower estimated error of displacement capacity. Those parameters agree reasonably with literature, although it is possible that obtained calibration is restricted to flexure controlled shear walls scope. It is possible that usage of trusses to represent reinforcement does not consider dowel effect, so a suggestion for future studies is to change trusses for elements with transverse stiffness, like beams or solids.

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“…The eccentricity is a small positive number defining the rate in which the hyperbolic flux approaches its asymptote. The default value in the literature is 0.1, almost undisputed [18,19].…”

Section: Constitutive Modelsmentioning

confidence: 99%

Calibration of Concrete Damaged Plasticity Model parameters for shear walls

2021

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“…In the literature, the studies regarding strengthened RC wall panels are often related to retrofitting of structures damaged by seismic events where the shear forces are predominant. The benefits of strengthening shear walls with opening using FRP material are shown in several works (Li et al 2013, Todut et al 2015, Mosallam and Nasr 2017, Husain et al, 2019. A few investigations have focused on the structural behavior of strengthened self-bearing walls with Latin American Journal of Solids and Structures, 2021, 18(8), e412 3/13 openings.…”

Section: P K K Pmentioning

confidence: 99%

Aspects of finite element modeling of strengthened RC walls with opening

Silva

Díaz

Trautwein

et al. 2021

Lat. Am. j. solids struct.

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“…In the studies in the literature [33][34][35][36][37][38][39] The opening can be left on RC shear walls due to architectural reasons such as doors and windows. However, the location, size, etc.…”

Section: Figure 3 Reinforcement Layout On the Boundary Element Zone In Canceled Regulationmentioning

confidence: 99%

Shear Wall Design within the Light of Prominent Standards

Maali¹

2020

CEBEL

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Reinforced concrete (RC) structures have their own weight, earthquake, wind, dead loads, live loads, creep, etc. throughout their service life. They are exposed to internal and external load effects. In order to meet the horizontal forces such as earthquake and wind from these loads affecting the structure, shear wall structures with high lateral rigidity are needed. Therefore, shear walls are one of the most important structural elements that can resist earthquake forces due to their high lateral rigidity and load bearing capacities. Most of the buildings today are designed according to the old regulations. Therefore, the shear wall was sized and reinforced according to these old regulations. However, to date, standards have been renewed in certain periods. Despite this, shear walls designed according to the old regulations continue to resist seismic forces. In this study, the design and behavioral differences of the reinforced concrete shear walls between the Turkish Regulation that came into force in 2019, and the old regulation were compared. In addition, RC shear walls were evaluated according to ACI-318-19 and EuroCode-2 regulations.

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Strengthening of reinforced concrete shear walls with openings using carbon fiber-reinforced polymers

Cited by 25 publications

References 19 publications

Calibration of Concrete Damaged Plasticity Model parameters for shear walls

Calibration of Concrete Damaged Plasticity Model parameters for shear walls

Aspects of finite element modeling of strengthened RC walls with opening

Shear Wall Design within the Light of Prominent Standards

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