Shear strengthening of wide-shallow beams by inserted fasteners

Moubarak, Ahmed M.R.; Elwardany, Hytham; El-hassan, Khaled Abu; Taher, Salah El‐Din F.

doi:10.1016/j.engstruct.2022.114554

Cited by 3 publications

(3 citation statements)

References 22 publications

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“…Steel plates at the shear span had an edge over using steel angles, which reduced the shear cracks and made the beams more ductile. Inclined fasteners had no significant difference from using vertical fasteners [23].…”

Section: Previous Researchesmentioning

confidence: 77%

Shallow and Wide RC Beams, Definition, Capacity and Structural Behavior – Gap Study

Soliman,

Mansour,

Ebid

et al. 2023

TOCIEJ

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Wide beam, shallow beam, and banded beam are almost equivalent terms for beams with limited depth and large width. They are often embedded in ribbed slabs to facilitate the formwork. The contribution of web reinforcement in the shear capacity of this type of beam is still a gray area, and all design codes neglected this contribution. The aim of this research is to introduce a general overview of this topic and detect the unstudied gaps in this topic. Nine design codes and about forty previous researches were collected, summarized, analyzed, classified, and mapped with respect to the considered parameters, utilized methodologies, recorded observations, and concluded outcomes to detect further research opportunities. The results indicated that design codes have no unified definition for the shallow or wide beams; most of them neglected the contribution of the shear reinforcement. On the other hand, the analysis of the collected research considering 32 points of the study showed that only 19 points are well studied; it also indicated an extreme shortage in both theoretical studies (using “Finite Element Method” FEM) and predictive models (mathematically using “Artificial Intelligence” AI) for the shear capacity besides the effect of creep and cyclic loading, especially for beams with web openings.

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Section: Previous Researchesmentioning

confidence: 77%

Shallow and Wide RC Beams, Definition, Capacity and Structural Behavior – Gap Study

Soliman,

Mansour,

Ebid

et al. 2023

TOCIEJ

View full text Add to dashboard Cite

show abstract

“…Several steel configurations other than conventional stirrups were investigated. Moubarak et al [11] introduced internal and external fasteners as a shear-resisting system for wide beams, which significantly increased the shear capacity of the beams. Elansary et al [12] had used a spiral reinforcement system embedded in the wide beams, which increased the ductility of the beams.…”

Section: Introductionmentioning

confidence: 99%

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

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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

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“…Another approach was introduced by using internal and external fasteners on thirteen wide beam specimens; the mode of failure and the shear capacity were improved [10]. In 2023, five shallow beams with ultra-high-performance fiber-reinforced concrete were tested with different spacings, and the area of the stirrups was considered both variables.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Aspect Ratio, Characteristic Strength and Compression Rebars on the Shear Capacity of Shallow RC Beams

Soliman,

Mansour,

Khalil

et al. 2023

Civ Eng J

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This paper investigates the impact of the aspect ratio, the characteristics strength of the concrete, and the compression steel ratio on the shear capacity of wide-shallow beams. An experimental program consists of seven specimens, including a control specimen, all tested under a three-point load test. Three specimens were considered for each parameter (the control specimen was included in all three variables). The experimental results were compared to the theoretical values of six different codes of practice; they were also analyzed to determine the ductility, stiffness, and dissipated energy of each specimen. The results indicated that the shear reinforcement was fully functioning until it yielded, with a minimum contribution of 55% of the total shear capacity of the specimens. The aspect ratio and the characteristic strength had a notable impact on the shear capacity of the specimens, while the compression steel ratio had a minor effect on the shear capacity, but it improved the stiffness and the ductility of the beams. Theoretical concrete shear strengths from design codes ranged between 77 and 163% of the experimental values; EN-1992 was the closest code to the experimental results. A comparison between the experimental results and predicted values using GP and EPR methods from previous research showed accuracies of 72% and 81%, respectively. Doi: 10.28991/CEJ-2023-09-09-012 Full Text: PDF

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Shear strengthening of wide-shallow beams by inserted fasteners

Cited by 3 publications

References 22 publications

Shallow and Wide RC Beams, Definition, Capacity and Structural Behavior – Gap Study

Shallow and Wide RC Beams, Definition, Capacity and Structural Behavior – Gap Study

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

The Impact of Aspect Ratio, Characteristic Strength and Compression Rebars on the Shear Capacity of Shallow RC Beams

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