Reduced area approach for predicting punching shear resistance of biaxial hollow slabs with openings

Oukaili, Nazar; Merie, Hammad

doi:10.1016/j.rineng.2023.101261

Cited by 1 publication

(5 citation statements)

References 9 publications

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“…The load imposed, steel strains, concrete strains, and deflection readings were taken immediately after each new loading level. Additional information on each of these measurements may be found in [48,49].…”

Section: Resultsmentioning

confidence: 99%

“…To determine the punching resistance of RC bubbled slabs, Oukaili and Merie [48] developed a straightforward equation for assessing the effective shear perimeter. This equation should be used in conjunction with the procedures that major codes recommend for predicting the impact of creating an opening adjacent to a column.…”

Section: Impact Of Opening On Strength Of Flat Slabsmentioning

confidence: 99%

“…The behavior of RC biaxial voided slabs with openings is currently poorly investigated in the international literature due to a lack of research in this field of study. It appears that there have been very few studies carried out to investigate the shear strength of biaxial voided slabs with openings [47,48]. With a few minor adjustments to their punching shear perimeter calculations, the shear resistance of these slabs with openings may be predicted using the same techniques as for solid slabs with openings, as the biaxial voided slab system is a kind of flat slab.…”

Section: Investigated Parameters and Objectives Of The Present Workmentioning

confidence: 99%

“…These gauges were placed at the previously designated locations in both orthogonal directions. Additional information on the test's setup and instrumentation may be found in [48,49].…”

Section: Description Of Tested Specimens Test Setup and Instrumentationmentioning

confidence: 99%

“…The mechanical properties of the steel bars that were used in this experimental program were evaluated in compliance with ASTM A615 [51]. Additional information on the mechanical properties of the concrete and steel may be found in [48,49].…”

Section: Concrete and Reinforcement Materialsmentioning

confidence: 99%

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Reduced Volume Approach to Evaluate Biaxial Bubbled Slabs’ Resistance to Punching Shear

Oukaili,

Merie,

Allawi

et al. 2024

Buildings

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The bubbled slab, a type of reinforced concrete (RC) slab with plastic voids, is an innovative design that employs a biaxial distribution of voiding formers within the slab to reduce the slab’s self-weight while preserving a load-carrying capacity that is approximately comparable to that of solid slabs. This paper presents a new approach for figuring out the effective critical shear perimeter of voided slabs using the reduced-volume concept of concrete. This approach aims to reduce the coefficient of variation of the current design standards, namely the ACI 318-19 and Eurocode 2, for assessing the slabs’ resistance to punching shear. Our experimental program investigated the impact of voiding former patterns and the location of an opening near a column on the punching shear resistance of biaxial hollow slabs. The factors under consideration included the opening’s size, location, and distance from the loaded area, as well as the voiding formers’ placement concerning the critical shear boundaries. The results of experiments on 10 full-scale, 2000 × 2000 × 230 mm, reinforced concrete biaxial voided slabs with an opening are presented in this study. Two design expressions were used to estimate the biaxial hollow slabs’ shear strength. These expressions take into account the reduced volume of concrete and the distribution of voiding formers up to the section 4d from the periphery of the column. The proposed approach to determine the effective punching shear perimeter has the lowest coefficient of variation among the methods suggested by these standards. This indicates the validity of our proposed expressions. The coefficient of variation of the proposed expressions does not exceed 0.057.

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Section: Resultsmentioning

confidence: 99%

Section: Impact Of Opening On Strength Of Flat Slabsmentioning

confidence: 99%

Section: Investigated Parameters and Objectives Of The Present Workmentioning

confidence: 99%

“…These gauges were placed at the previously designated locations in both orthogonal directions. Additional information on the test's setup and instrumentation may be found in [48,49].…”

Section: Description Of Tested Specimens Test Setup and Instrumentationmentioning

confidence: 99%

Section: Concrete and Reinforcement Materialsmentioning

confidence: 99%

See 3 more Smart Citations

Reduced Volume Approach to Evaluate Biaxial Bubbled Slabs’ Resistance to Punching Shear

Oukaili,

Merie,

Allawi

et al. 2024

Buildings

Self Cite

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show abstract

Reduced area approach for predicting punching shear resistance of biaxial hollow slabs with openings

Cited by 1 publication

References 9 publications

Reduced Volume Approach to Evaluate Biaxial Bubbled Slabs’ Resistance to Punching Shear

Reduced Volume Approach to Evaluate Biaxial Bubbled Slabs’ Resistance to Punching Shear

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