The Effective Width in Shear Design of Wide-shallow Beams: A Comparative Study

Khalil, Abd El-Hakim; Etman, Emad; Atta, A.A.; Baraghith, Ahmed T.; Behiry, Reda N.

doi:10.1007/s12205-019-0830-7

Cited by 14 publications

(4 citation statements)

References 6 publications

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“…The transverse spacing of stirrups had a minor enhancement factor on the shear behavior [15], while the number of branches increased the shear behavior [16]. A finite element model was used to validate several experimental programs; it was mostly accurate to the guidelines of the Egyptian code of practice (ECP-203) [17].…”

Section: Previous Researchesmentioning

confidence: 99%

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: 99%

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

Soliman,

Mansour,

Ebid

et al. 2023

TOCIEJ

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“…Nowadays, to consider the shear lag effect and avoid complex evaluations, utilizing the effective width of the RC slab or composite slab with profiled steel sheeting to evaluate the combined effect of the slab is a standard method in scientific research or practical project design. Using effective flange width of a concrete slab to do global structural analysis is mainly concentrated in the three engineering fields of civil engineering, reinforced concrete structural buildings [16] and reinforced concrete bridges [17], steel bridge and composite steel bridge [18], and steel structural building [19] and composite steel structural building [20].…”

Section: Shear Lag and Effective Flange Width Of A Composite Beammentioning

confidence: 99%

A Proposal for a Simple Method for Determining the Concrete Slab Width of Composite Beam-to-Column Joints

Wang²,

Ding

et al. 2021

Applied Sciences

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Extensive brittle failures in the weld zone of the beam bottom flange in composite joints of SMRFs were observed during the Northridge earthquake and the Kobe earthquake. One of the main reasons is the large tensile strain demand generated at the beam bottom flange zone under positive bending. The key to accurately understanding the mechanical properties of composite joints is the effective width of the slab. However, researchers have no consensus on the flange slab’s effective width for composite joints, even with the simplest solid concrete slab. Therefore, the best way to design the composite joint specimen is by following the current design specifications. However, each specification implements different ideas and approaches for specifying an effective slab width. This paper presents comparisons of the effective flange width provisions in China, the United States, Australia/New Zealand, and the European Union. The characteristics of each provision are briefly described and summarized. Numerical comparisons for positive and negative moment regions of continuous spans follow. Based on the commonalities and main differences among all these provisions, we propose a recommended equation for calculating the effective width of a solid concrete slab, reflecting the specification differences. The reliability of the recommended equation was verified with ABAQUS software analysis. The recommended equation can meet the fast and secure design requirements for composite joints in tests with concrete slabs.

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“…The width of the supports was investigated by Khalil et al [14], who found that as the supports got narrower, the less shear capacity and flexure they endured. An experimental program was conducted by Mahmoud et al [15], who found that as the eccentricity increased, the shear capacity of the wide beams decreased.…”

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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The Effective Width in Shear Design of Wide-shallow Beams: A Comparative Study

Cited by 14 publications

References 6 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

A Proposal for a Simple Method for Determining the Concrete Slab Width of Composite Beam-to-Column Joints

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

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