Shear and punching capacity predictions for slabs under concentrated loads aided by lefea

Alex M.D. de Sousa; Eva O.L. Lantsoght; Andri Setiawan; Mounir K. El Debs

doi:10.14359/51738762

Shear and punching capacity predictions for slabs under concentrated loads aided by lefea

Alex M.D. de Sousa, Eva O.L. Lantsoght, Andri Setiawan, Mounir K. El Debs

Concrete Structures

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

One-way slabs under concentrated loads may fail by one-way shear, punching, flexure or a mixed-mode between them. This study examines the benefits of using Linear Elastic Finite Element Analyses (LEFEA) combined with analytical expressions to predict the shear and punching capacities of such slabs. Besides, the determination of the most critical shear failure mechanism is also addressed. A simplified approach is proposed to predict the shear and punching capacity without numerical models. Forty-eight tests of simply supported slabs under concentrated loads were evaluated. The LEFEA was conducted with ABAQUS. The analytical expressions are based on the Critical Shear Crack Theory (CSCT). The coupling of the CSCT-expressions with the LEFEA accurately predicts the governing shear failure mechanism and the shear capacity of most test results. In this study, it was also found that the punching capacity predictions may be improved by considering the influence of the slab width and load size on the governing failure mechanism. A similar level of precision was achieved using only analytical expressions when properly calibrated. Therefore, the CSCT expressions can be used at different stages of design and assessment of existing structures according to the Level of Approximation required.

Original language	English
Title of host publication	Punching Shear of Concrete Slabs
Subtitle of host publication	Insights from New Materials, Tests, and Analysis Methods
Editors	Aikaterini Genikomsou, Trevor Hrynyk, Eva Lantsoght
Publisher	American Concrete Institute
Pages	100-122
Number of pages	23
ISBN (Electronic)	9781641952125
DOIs	https://doi.org/10.14359/51738762
Publication status	Published - 2023
Event	Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods at the ACI Spring Convention 2023 - San Francisco, United States Duration: 2 Apr 2023 → 6 Apr 2023

Publication series

Name	American Concrete Institute, ACI Special Publication
Volume	SP-357
ISSN (Print)	0193-2527

Conference

Conference	Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods at the ACI Spring Convention 2023
Country/Territory	United States
City	San Francisco
Period	2/04/23 → 6/04/23

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

critical shear crack theory
linear elastic finite element analyses
one-way shear
punching shear

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10.14359/51738762

Shear And Punching Capacity Predictions For Slabs Under Concentrated Loads Aided By LefeaFinal published version, 2.92 MB

Cite this

de Sousa, A. M. D., Lantsoght, E. O. L., Setiawan, A., & El Debs, M. K. (2023). Shear and punching capacity predictions for slabs under concentrated loads aided by lefea. In A. Genikomsou, T. Hrynyk, & E. Lantsoght (Eds.), Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods (pp. 100-122). (American Concrete Institute, ACI Special Publication; Vol. SP-357). American Concrete Institute. https://doi.org/10.14359/51738762

de Sousa, Alex M.D. ; Lantsoght, Eva O.L. ; Setiawan, Andri et al. / Shear and punching capacity predictions for slabs under concentrated loads aided by lefea. Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods. editor / Aikaterini Genikomsou ; Trevor Hrynyk ; Eva Lantsoght. American Concrete Institute, 2023. pp. 100-122 (American Concrete Institute, ACI Special Publication).

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title = "Shear and punching capacity predictions for slabs under concentrated loads aided by lefea",

abstract = "One-way slabs under concentrated loads may fail by one-way shear, punching, flexure or a mixed-mode between them. This study examines the benefits of using Linear Elastic Finite Element Analyses (LEFEA) combined with analytical expressions to predict the shear and punching capacities of such slabs. Besides, the determination of the most critical shear failure mechanism is also addressed. A simplified approach is proposed to predict the shear and punching capacity without numerical models. Forty-eight tests of simply supported slabs under concentrated loads were evaluated. The LEFEA was conducted with ABAQUS. The analytical expressions are based on the Critical Shear Crack Theory (CSCT). The coupling of the CSCT-expressions with the LEFEA accurately predicts the governing shear failure mechanism and the shear capacity of most test results. In this study, it was also found that the punching capacity predictions may be improved by considering the influence of the slab width and load size on the governing failure mechanism. A similar level of precision was achieved using only analytical expressions when properly calibrated. Therefore, the CSCT expressions can be used at different stages of design and assessment of existing structures according to the Level of Approximation required.",

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note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.; Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods at the ACI Spring Convention 2023 ; Conference date: 02-04-2023 Through 06-04-2023",

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de Sousa, AMD, Lantsoght, EOL, Setiawan, A & El Debs, MK 2023, Shear and punching capacity predictions for slabs under concentrated loads aided by lefea. in A Genikomsou, T Hrynyk & E Lantsoght (eds), Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods. American Concrete Institute, ACI Special Publication, vol. SP-357, American Concrete Institute, pp. 100-122, Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods at the ACI Spring Convention 2023, San Francisco, United States, 2/04/23. https://doi.org/10.14359/51738762

Shear and punching capacity predictions for slabs under concentrated loads aided by lefea. / de Sousa, Alex M.D.; Lantsoght, Eva O.L.; Setiawan, Andri et al.
Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods. ed. / Aikaterini Genikomsou; Trevor Hrynyk; Eva Lantsoght. American Concrete Institute, 2023. p. 100-122 (American Concrete Institute, ACI Special Publication; Vol. SP-357).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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de Sousa AMD, Lantsoght EOL, Setiawan A, El Debs MK. Shear and punching capacity predictions for slabs under concentrated loads aided by lefea. In Genikomsou A, Hrynyk T, Lantsoght E, editors, Punching Shear of Concrete Slabs: Insights from New Materials, Tests, and Analysis Methods. American Concrete Institute. 2023. p. 100-122. (American Concrete Institute, ACI Special Publication). doi: 10.14359/51738762

Shear and punching capacity predictions for slabs under concentrated loads aided by lefea

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