Evaluation of Ductility of RC Structures Constructed with Bubble Deck System

Hashemi, Seyed Shaker; Sadeghi, Kabir; Vaghefi, Mohammad; Siadat, Seyed Alireza

doi:10.1007/s40999-017-0158-y

Cited by 14 publications

(20 citation statements)

References 13 publications

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“…For the evaluation of the F y , it was considered the results of Figure . According to the obtained results for μ , indicated in Table , the ductility performance of the tested slabs, with values ranging from 1.51 to 2.65, was smaller than the value of three recommended elsewhere, which indicates a smaller performance in terms of ductility.…”

Section: Resultsmentioning

confidence: 77%

“…According to these studies, a ductility performance μ > 3 was recommended for BD slabs. 3 Some theoretical and experimental research have also suggested the BD RC slabs can be regarded, from the design point of view, as solid RC slabs, but the available recommendations are of empirical nature, and are based on very few experimental results, consisting as reducing the punching capacity of the corresponding solid RC slab in a factor that is around 40%. 4,5 Therefore, reliable information is still scarce for assessing the level of "appropriateness" of the suggested recommendations.…”

Section: Introductionmentioning

confidence: 99%

“…The displacement ductility performance of BD slabs was investigated by numerical simulations, where ductility index ( μ = δ p / δ y ) was defined as the ratio between deflection at failure ( δ p ) and deflection and yield initiation of the flexural reinforcement ( δ y ). According to these studies, a ductility performance μ > 3 was recommended for BD slabs …”

Section: Introductionmentioning

confidence: 99%

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Punching behavior of BubbleDeck type reinforced concrete slabs

Nicácio

Barros

Melo

2019

Structural Concrete

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The BubbleDeck type slab (BD) is a reinforced concrete (RC) flat slab that includes recycled plastic hollow spheres (RPHS) in its core for decreasing its dead weight. However, punching capacity of BD slabs can be a critical aspect, thereby this work is devoted to assess experimentally its punching behavior. An experimental program composed of four real scale prototypes, representative of RC flat slabs in punching loading conditions, was carried out. Two of these slabs are of BD type, while the other two do not include the RPHS system, herein denominated as RC solid slab (SS). The test results show that all the tested slabs failed in punching after the occurrence of yield initiation of the flexural reinforcement. The punching capacity and the deflection at failure of BD type slab has decreased up to 14% and up to 44%, respectively, when compared to the corresponding SS type slab. A relatively small ductility index was obtained (between 1.51 and 2.65). In BD type slabs, the punching failure surface had tendency to propagate through the RPHS, at an inclination angle of about 45°.

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Section: Resultsmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Punching behavior of BubbleDeck type reinforced concrete slabs

Nicácio

Barros

Melo

2019

Structural Concrete

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“…Structural systems, and members thereof, should be designed under service loads to have enough stiffness to limit deflections, lateral drift, vibration, or any other deformations that adversely affect the intended use and performance of buildings and other structures based on the requirements outlined in the applicable codes and standards, or as specified in the project design criteria (Hashemi et al, 2018).…”

Section: Strength and Stiffnessmentioning

confidence: 99%

Study of the plastic-hinge analysis of 3D steel frames applying nonlinear static analysis

Kannas¹,

Wafi²

2020

IJAESA

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This paper provides a distinct study on the performance of different residential buildings with different height and length spans under the influence of applied loads according to the Turkish standard TS498. The research paper presents the nonlinear performance of the buildings and provides a clear picture of the plastic and its stages throughout the construction. The study explains the effect of the various stages of plastic and how it affects the rigidity of the building. The results portray the building's stiffness values and how they change. The results show that stiffness increases with length-increase and decreases by decreasing the height of buildings. All stiffness values were calculated according to the first plastic hinge formation. Software used is ETABS 2018 and all calculations and parameters used according to FEMA356-2000, ASCE 7-16, ACI-318, EURO code 8, and Turkish standard.

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“…This model has been used to analyze different types of RC members such as beams, columns, shear walls, and deck systems. Hashemi et al [20] used this method to model bubble deck systems. In the fiber theory, the RC member is divided into several sub-elements which are composed of parallel layers.…”

Section: Smith and Vantsiotismentioning

confidence: 99%

Analysis of RC Deep Beams Considering the Shear Deformations and Bar-concrete Interaction

Hashemi¹,

Sadeghi²,

Javidi³

et al. 2020

Period. Polytech. Civil Eng.

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In this paper, reinforced concrete (RC) deep beams (DBs) have been analyzed numerically and a new approach is proposed to the nonlinear numerical modeling of such structural members. The effect of shear deformations and the interaction between reinforcing steel bar and concrete are considered in modeling and analysis. In order to consider the effect of shear deformations, the Timoshenko beam theory has been applied to formulate the analysis method. In the modeling, the RC DB is divided into several sub-elements which are composed of concrete and reinforcing steel bars. Individual degrees of freedom have been assigned to each reinforcing steel bar. Thus, each reinforcing steel bar is able to slip relative to its surrounding concrete and the bond effect is simulated by nonlinear springs. To consider the interaction between reinforcing steel bar and concrete, the concrete segment acts as a beam element, and each reinforcing steel bar acts as a truss element. The reliability of this method has been confirmed by comparing the obtained results from the numerical analysis and the results of the experimental pushover test.

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Evaluation of Ductility of RC Structures Constructed with Bubble Deck System

Cited by 14 publications

References 13 publications

Punching behavior of BubbleDeck type reinforced concrete slabs

Punching behavior of BubbleDeck type reinforced concrete slabs

Study of the plastic-hinge analysis of 3D steel frames applying nonlinear static analysis

Analysis of RC Deep Beams Considering the Shear Deformations and Bar-concrete Interaction

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