Searched for: subject%3A%22punching%255C+shear%22
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de Sousa, Alex Micael Dantas (author), Lantsoght, E.O.L. (author), Debs, Mounir Khalil El (author)
Reinforced concrete one-way slabs under concentrated loads can develop different shear failure mechanisms: as wide beams in one-way shear, punching shear around the load or a mixed mode between them. Until now, most publications presented recommendations to assess the shear capacity considering only the one-way shear failure mechanism. This...
journal article 2023
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Dantas de Sousaa, Alex Micael (author), Lantsoght, E.O.L. (author), de Lima Araújo, Daniel (author), Pereira Pradoe, Lisiane (author), Debs, Mounir Khalil El (author)
This study describes a set of recommendations to improve the precision of shear and punching shear capacity predictions for one-way slabs under concentrated loads, regardless of the governing failure mechanism, using the ABNT NBR 6118:2014 code provisions. For this purpose, a database of 143 test results was developed, including one-way slabs...
journal article 2023
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de Sousa, Alex M.D. (author), Lantsoght, E.O.L. (author), El Debs, Mounir K. (author)
One-way slabs under concentrated loads may fail by one-way shear, two-way shear, flexure, or a combination of these modes. This paper reviews shear and punching shear-failure mechanisms of one-way slabs under concentrated loads tested from the literature and investigates the accuracy of different approaches to predict the ultimate capacity...
journal article 2023
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Amir, Sana (author), van der Veen, C. (author), Walraven, J.C. (author), de Boer, Ane (author)
A large number of bridges in the Netherlands have transversely post tensioned deck slabs cast in-situ between flanges of precast girders and were found to be critical in shear when evaluated by Eurocode 2. To investigate the bearing (punching shear) capacity of such bridges, a 1:2 scale bridge model was constructed in the laboratory and...
conference paper 2023
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de Sousa, Alex M.D. (author), Lantsoght, E.O.L. (author), Setiawan, Andri (author), El Debs, Mounir K. (author)
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...
conference paper 2023
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de Sousa, Alex M.D. (author), Lantsoght, E.O.L. (author), El Debs, Mounir K. (author)
One-way slabs under concentrated loads may fail by one-way shear such as wide beams, punching shear, flexure, or by combining two or more of these mechanisms. Nevertheless, most publications have only addressed shear and punching failures without flexural reinforcement yielding. This study investigates the ultimate shear capacity of one-way...
journal article 2023
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de Sousa, Alex M.D. (author), Lantsoght, E.O.L. (author), Genikomsou, Aikaterini S. (author), Prado, Lisiane P. (author), El Debs, Mounir K. (author)
Several studies investigated the precision of non-linear finite element analyses (NLFEA) to predict the shear capacity of beams or the punching capacity of slab-column connections. However, in the literature, there is little discussion regarding the results of NLFEA to predict the ultimate capacity and failure mechanism of slabs susceptible...
journal article 2023
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Lantsoght, E.O.L. (author), Ospina, Carlos E. (author), Alexander, Scott D.B. (author)
In design, the sectional depth of reinforced concrete spread footings is usually governed by design code provisions for punching shear, which are derived primarily from experiments on slab-column connections. Previous experiments have shown that the punching behavior of concentrically loaded spread footings differs from that of slab-column...
conference paper 2023
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Vargas, Daniel (author), Lantsoght, E.O.L. (author), Genikomsou, Aikaterini S. (author)
Eccentric punching shear can occur in concrete slab–column connections when the connection is subjected to shear and unbalanced moments. Unbalanced moments occur in all floor slabs at the edge and corner columns. As such, this problem is of practical relevance. However, most punching experiments in the literature deal with concentric punching...
journal article 2022
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Carrera, Bernardo (author), Lantsoght, E.O.L. (author), Alexander, Scott D.B. (author)
The strip model describes a load path prior to failure that can be tailored to a wide range of slabs under concentrated loads, both concentric and eccentric. Eccentric punching shear can occur in concrete slab-column connections subjected to shear and unbalanced moment, such as edge and corner columns. This paper shows how the strip model is...
conference paper 2022
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Sousa, Alex M.D. de (author), Lantsoght, E.O.L. (author), Genikomsou, Aikaterini S. (author), Krahl, Pablo A. (author), Debs, Mounir K. El (author)
The outstanding mechanical properties of ultra-high-performance fiber-reinforced concrete (UHPFRC) can be used to improve the punching behavior of new slab-column connections. This study investigates the punching capacity of flat slab-column connections built with a rational combination of normal strength concrete (NSC) and UHPFRC in critical...
journal article 2021
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Lantsoght, E.O.L. (author), van der Veen, C. (author), Koekkoek, Rutger (author), Sliedrecht, Henk (author)
In The Netherlands, existing slab-between-girder bridges with prestressed girders and thin transversely prestressed concrete decks require assessment. The punching capacity was studied in a previous series of experiments, showing a higher capacity thanks to compressive membrane action in the deck. Then, concerns were raised with regard to...
conference paper 2021
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Lantsoght, E.O.L. (author), van der Veen, C. (author), Koekkoek, Rutger (author), Sliedrecht, Henk (author)
In the Netherlands, slab-between-girder bridges with prestressed girders and transversely prestressed decks in between the girders require assessment. Static testing showed that compressive membrane action increases the capacity of these structures and that the decks fail in punching shear. The next question is if compressive membrane action...
journal article 2019
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Lantsoght, E.O.L. (author), van der Veen, C. (author), Koekkoek, Rutger (author), Sliedrecht, Henk (author)
Previous research showed that the capacity of existing slab-between-girder bridges is larger than expected based on the punching shear capacity prescribed by the governing codes, as a result of compressive membrane action. A first series of fatigue tests confirmed that compressive membrane action also acts under cycles of loading. However, a...
journal article 2019
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Lantsoght, E.O.L. (author), Koekkoek, Rutger (author), van der Veen, C. (author), Sliedrecht, Henk (author)
In the Netherlands, the assessment of existing prestressed concrete slab-between-girder bridges has revealed that the thin, transversely prestressed slabs may be critical for static and fatigue punching when evaluated using the recently introduced Eurocodes. On the other hand, compressive membrane action increases the capacity of these slabs,...
journal article 2019
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Alexander, S (author), Lantsoght, E.O.L. (author)
The arched strut is an addition to the strut-and-tie (STM) tool kit. It models the combination of disturbed behavior in one direction with slender behavior in the perpendicular direction. Common applications for the arched strut are in the design of connections between a reinforced concrete slab and its supporting columns or punching of bridge...
conference paper 2018
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Lantsoght, E.O.L. (author), de Boer, A. (author), van der Veen, C. (author)
Existing reinforced concrete solid slab bridges in the Netherlands are re-assessed for shear based on a Unity Check: the ratio of the shear stress caused by the applied loads to the shear capacity of the concrete cross-section. The governing shear stress resulting from the self-weight, weight of the wearing surface, distributed and concentrated...
journal article 2017
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Van Hemert, P.H.A. (author), Fennis-Huijben, S.A.A.M. (author), Hordijk, D.A. (author)
A large number of concrete structures, that is built in the sixties and seventies of the twentieth century, need to be re-evaluated. It should be judged whether their capacity is still sufficient for the increased traffic loads. Acoustic emission (AE) is a non-destructive technique that can possibly be used to get a better insight in the...
conference paper 2014
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Lantsoght, E.O.L. (author), Van der Veen, C. (author), De Boer, A. (author)
The shear problem is typically studied by testing small, heavily reinforced, slender beams subjected to concentrated loads, resulting in a beam shear failure, or by testing slab-column connections, resulting in a punching shear failure. Slabs subjected to concentrated loads close to supports, as occurring when truck loads are placed on slab...
conference paper 2014
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Amir, S. (author), Van der Veen, C. (author), Walraven, J.C. (author)
In the Netherlands, there is a need to determine the capacity of bridge decks as a large number of them were built back in the 60’s and 70’s. Since then, not only a lot of additional safety requirements have been incorporated into the modern codes but the traffic flow has also increased drastically. The current research deals with this question...
conference paper 2012
Searched for: subject%3A%22punching%255C+shear%22
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