TECHNICAL PAPER
Experimental analysis of punching shear in flat slabs with variation in the anchorage of shear reinforcement
Henrique Lima,
Rodolfo Palhares,
Guilherme Sales de Melo,
Marcos Oliveira,
Corresponding Author
Henrique Lima
Ambiental and Civil Engineering Department, University of Brasilia, Brasília, Brazil
Correspondence
Henrique Lima, SHNT 2 TRECHO 3 Bloco F Ap 213 CEP 70800230, Asa Norte, Brasília, Brazil.
Email: [email protected]
Search for more papers by this authorRodolfo Palhares
Structures Department, Federal University of Juiz de Fora, Juiz de Fora, Brazil
Search for more papers by this authorGuilherme Sales de Melo
Ambiental and Civil Engineering Department, University of Brasilia, Brasília, Brazil
Search for more papers by this authorMarcos Oliveira
Ambiental and Civil Engineering Department, University of Brasilia, Brasília, Brazil
Search for more papers by this authorHenrique Lima,
Rodolfo Palhares,
Guilherme Sales de Melo,
Marcos Oliveira,
Corresponding Author
Henrique Lima
Ambiental and Civil Engineering Department, University of Brasilia, Brasília, Brazil
Correspondence
Henrique Lima, SHNT 2 TRECHO 3 Bloco F Ap 213 CEP 70800230, Asa Norte, Brasília, Brazil.
Email: [email protected]
Search for more papers by this authorRodolfo Palhares
Structures Department, Federal University of Juiz de Fora, Juiz de Fora, Brazil
Search for more papers by this authorGuilherme Sales de Melo
Ambiental and Civil Engineering Department, University of Brasilia, Brasília, Brazil
Search for more papers by this authorMarcos Oliveira
Ambiental and Civil Engineering Department, University of Brasilia, Brasília, Brazil
Search for more papers by this authorDiscussion on this paper must be submitted within two months of the print publication. The discussion will then be published in print, along with the authors’ closure, if any, approximately nine months after the print publication.
Funding information: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Abstract
This study experimentally assessed the behavior of interior slab–column connection in a system of reinforced concrete slabs subjected to symmetrical loading, with anchorage variation of shear reinforcement. Eight slab models (with equal flexural reinforcement and same dimensions) were assessed, being seven with shear reinforcement (different anchorages of shear reinforcement in the flexural reinforcement) and one slab for reference only reinforced for flexion. Experimental data were compared with the theoretical methods established by the following code designs: ACI 318 (2019), Eurocode 2 (2004), ABNT NBR 6118 (2014), and fib Model Code (2010). Although anchoring is an important parameter, it was found that the anchorage of the shear reinforcement in the flexural reinforcement did not significantly interfere with punching shear. The adopted shear reinforcement anchoring obtained better results concerning ultimate load only in the compressed longitudinal reinforcements.
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