Transition between Shear and Punching in Reinforced Concrete Slabs: Review and Predictions with ACI Code Expressions

Sousa, Alex Micael Dantas de; Lantsoght, Eva O. L.; Debs, Mounir Khalil El

doi:10.14359/51738350

Cited by 4 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to previous studies [24], one or other failure mechanisms may occur as a function of the load position (or the ratio av/dl) and slab width (or the ratio bslab/lload). At this point, it is important to note that the shear flow through the sides of the control perimeter close to the free edges is higher or lower as a function of the slab width (Figure 11a).…”

Section: Insights From the Literature For Punching Capacity Predictionsmentioning

confidence: 98%

“…Recently, Sousa, Lantsoght and El Debs [24] evaluated a dataset of 143 one-way slabs under concentrated loads that presented different shear failure mechanisms (shear, punching or a mixed mode between them). Subgroups of tests were organized on which only a specific parameter was varied in the respective references.…”

Section: Insights From the Literature For One-way Shearmentioning

confidence: 99%

“…Buildings 2023, 13, 434 8 of 28 ). Source: Adapted from Sousa, Lantsoght and El Debs [24]. Note: WB = wide-beam shear failure (one-way shear); P = punching failure; WB + P = mixed failure mode between one-way shear and punching shear.…”

Section: Insights From the Literature For One-way Shearmentioning

confidence: 99%

“…Moreover, such cracking is not visible at the free sides of the slab, as is typical of punching failures. Figure 11c shows the normalized failure load by the average effective depth and root of the compressive strength of the concrete for a set of 20 test results organized by Sousa, Lantsoght and El Debs [24]. In this subset of test results, the only parameter that varied among the tests connected by lines was the slab width and, consequently, the ratio bslab/lload.…”

Section: Insights From the Literature For Punching Capacity Predictionsmentioning

confidence: 99%

“…This study addresses the research question and proposes a set of recommendations that allow assessing the one-way shear and punching capacity of one-way slabs under concentrated loads with better precision using the European [22] and fib Model Code expressions [21]. For this purpose, key parameters influencing the transition between one-way and two-way shear failures for such slabs were addressed and considered in the proposed approaches: (i) the load position, (ii) load size and (iii) the slab width [23,24]. Although simple, accurate predictions of shear and punching shear capacity can be achieved, regardless of the governing failure mechanism of the slabs.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Shear and Punching Capacity Predictions for One-Way Slabs under Concentrated Loads Considering the Transition between Failure Mechanisms

2023

View full text Add to dashboard Cite

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 study proposed developing recommendations to assess both the one-way shear and punching shear capacity of such slabs. Different codes of practice were addressed, including the current Eurocode and fib Model Code 2010 expressions. The recommendations were validated against 143 test results from the literature. Following these recommendations, one-way shear and punching capacities predictions achieved enhanced and almost the same level of accuracy.

show abstract

Section: Insights From the Literature For Punching Capacity Predictionsmentioning

confidence: 98%

Section: Insights From the Literature For One-way Shearmentioning

confidence: 99%

Section: Insights From the Literature For One-way Shearmentioning

confidence: 99%

Section: Insights From the Literature For Punching Capacity Predictionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Shear and Punching Capacity Predictions for One-Way Slabs under Concentrated Loads Considering the Transition between Failure Mechanisms

2023

View full text Add to dashboard Cite

show abstract

NLFEA of one-way slabs in transition between shear and punching: Recommendations for modeling

Sousa¹,

Lantsoght²,

Genikomsou³

et al. 2023

Engineering Structures

View full text Add to dashboard Cite

The Impact of Shear Reinforcement Amount and Arrangement on the Shear Capacity of Shallow RC Beams: An Experimental Study

Soliman,

Mansour,

Khalil

et al. 2023

Civ Eng J

View full text Add to dashboard Cite

This study investigates the impact of shear reinforcement amount and arrangement on the shear capacity of shallow/wide RC beams. Seven specimens of shallow/wide beams with different ultimate shear reinforcement stress (μ.Fys), longitudinal spacing to depth ratio (S/d), and transversal spacing to depth ratio (S’/d) were tested under a monotonic three-point bending test. All the specimens were designed to fail at shearing. The results showed that the shear reinforcement was fully functioning until it yielded; also, the amount of shear reinforcement had the major impact on the shear capacity; in addition, the transverse spacing had more influence on the shear capacity than the longitudinal spacing. The measured shear capacities were compared to six design codes, in which the results ranged from 95% to 110%, with the Japanese code (JSCE) being the closest to the experimental results. Two AI-based predicting equations, “Genetic Programming” (GP) and “Evolutionary Polynomial Regression” (EPR), were also compared to the experimental, with accuracies of 78% and 86% of the measured capacities, respectively. Initial stiffness, final stiffness, dissipated energy, and ductility were all discussed for the seven specimens, with ultimate shear reinforcement stress being the most impactful on the total shear capacity of the wide beams. Doi: 10.28991/CEJ-2023-09-12-013 Full Text: PDF

show abstract

Transition between Shear and Punching in Reinforced Concrete Slabs: Review and Predictions with ACI Code Expressions

Cited by 4 publications

References 28 publications

Shear and Punching Capacity Predictions for One-Way Slabs under Concentrated Loads Considering the Transition between Failure Mechanisms

Shear and Punching Capacity Predictions for One-Way Slabs under Concentrated Loads Considering the Transition between Failure Mechanisms

NLFEA of one-way slabs in transition between shear and punching: Recommendations for modeling

The Impact of Shear Reinforcement Amount and Arrangement on the Shear Capacity of Shallow RC Beams: An Experimental Study

Contact Info

Product

Resources

About