Experimental study of prestressed steel-concrete composite beams with profiled steel decking

Almeida, Marcela Moreira da Rocha; Souza, Alex Sander Clemente de; Albuquerque, Augusto Teixeira de

doi:10.1016/j.jcsr.2022.107331

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…To this day, in building construction, headed studs are most often used to join the slab with the steel beam [6][7][8][9][10]. They absorb both shear and tensile forces, and their load 2 of 19 capacity is the same in all directions.…”

Section: Introductionmentioning

confidence: 99%

“…For mechanical connection, a popular design solution is the use of trapezoidal sheet metal with embossing [22,23]. Most of them, in the upper part of the fold of the sheet, have concave ribbing so that the concrete can connect with the sheet [8]. There are also solutions in which the upper part of the fold uses convex embossing, so that the sheet can be embedded in the concrete.…”

Section: Introductionmentioning

confidence: 99%

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Study of Innovative Connector for Steel–Concrete Composite Structures

Derlatka,

Lacki,

Kania

et al. 2024

Applied Sciences

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The paper presents an analysis of the innovative connector for manufacturing a steel–concrete composite beam. The connector consists of a corrugated metal sheet in the shape of a dovetail and shot nails. The nails are shot through the sheet fold into the flange of the steel I-section. Experimental studies of push-out tests were carried out. The conducted tests proved that the proposed solution can be applied as the fastener for steel–concrete composite beams for the construction of ceilings in utility public buildings with small beam’s span. Considering the criteria presented in the Eurocode 4 standard and the results of the experiments, it was proven that all analyzed types of fasteners are ductile. The connector made of sheet with a thickness of 1.00 mm and 2 nails is characterized by a breaking load of 30.83 kN. The load-bearing capacity of the fastener can be adjusted by changing the corrugated sheet thickness and changing the number of nails shot in the single fold of the sheet.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of Innovative Connector for Steel–Concrete Composite Structures

Derlatka,

Lacki,

Kania

et al. 2024

Applied Sciences

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“…Their research results indicated that strengthening using tendons enhances serviceability and reduces deflection. Recent studies on the tendons potentiality to enhance the structural characteristics of the steel-concrete beams demonstrated that the post-tensioning steel improves the ultimate moment capacity of the beams, while the ductility is considerably declined in comparison with non-post-tensioned beam (Almeida et al, 2022; da Rocha Almeida et al, 2022). Deng et al (2011) experimented a post-tensioned circular CFST beam to assess the feasibility of the enhancement of CFST beam by a concentric tendon.…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of post-tensioned concrete-filled steel tube beams using unbonded tendons with uncertainty quantification

Ghaemdoust,

Yang,

Wang

et al. 2023

Advances in Structural Engineering

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The centerpiece of many research projects is evaluating the structural performance of the concrete-filled steel tubes (CFSTs). When these structural elements are employed as flexural members, some parts of the concrete infill are subjected to tension, and consequently the concrete is cracked so that the confinement effect is reduced. Therefore, the application of tendons and modification of the CFST configuration are deployed to improve the serviceability of the CFST beams. A non-linear finite element (FE) model considering the effects of the material and geometrical non-linearity and initial imperfection is developed. Concurrently, an analytical model based on the plastic stress distribution method (PSDM) is proposed to compare the results. In addition, a probabilistic assessment along with the uncertainty quantification is conducted to calculate the reliability indices and the sensitivity of the beams to the variation of the input variables. The results of the study demonstrate that the implemented measures considerably enhance the moment capacity and serviceability performance of the CFST beams. Moreover, the sensitivity analyses show the significance of the variables on the model output with different steel yield stress values and the importance is ordered as the steel tube width followed by the steel tube thickness and the concrete strength.

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“…Previous studies have experimentally and numerically investigated the flexural behavior of strengthened and unstrengthened steel-concrete composite structures [1][2][3][4][5][6][7][8]. The influence of the effective width of the concrete slab was investigated for composite beams at the hogging moment region [1].…”

Section: Introductionmentioning

confidence: 99%

“…They discovered that the prestressed tendon could lessen the strain on the beam components at all levels of loading, improving the performance of the beam under fatigue. Two composite beams with profiled steel decking were tested under two points of loading by Da Rocha Almeida et al [7,8] in both prestressed and non-prestressed conditions. Due to excessive model deformations and safety concerns, the test was stopped before it could fail.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling and Analysis of Strengthened Steel–Concrete Composite Beams in Sagging and Hogging Moment Regions

et al. 2023

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Strengthening of composite beams is highly needed to upgrade the capacities of existing beams. The strengthening methods can be classified as active or passive techniques. Therefore, the main purpose of this study is to provide detailed FE simulations for strengthened and unstrengthened steel–concrete composite beams at the sagging and hogging moment regions with and without profiled steel sheeting. The developed models were verified against experimental results from the literature. The verified models were used to present comparisons between the effect of using external post-tensioning and CFRP laminates as strengthening techniques. Applying external post-tensioning at the sagging moment regions is more effective because of the exhibited larger eccentricity. In the form of an initial camber and compressive stresses in the bottom flange prior to loading, this reasonable eccentricity induces reverse loading on the reinforced beams, reducing the net tensile stress induced during loading. Using CFRP laminates on the concrete slab for continuous composite beams is more effective in enhancing the beam capacity in comparison with using the external post-tension. However, reductions in the beam ductility were obtained.

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Experimental study of prestressed steel-concrete composite beams with profiled steel decking

Cited by 7 publications

References 14 publications

Study of Innovative Connector for Steel–Concrete Composite Structures

Study of Innovative Connector for Steel–Concrete Composite Structures

Performance assessment of post-tensioned concrete-filled steel tube beams using unbonded tendons with uncertainty quantification

Numerical Modeling and Analysis of Strengthened Steel–Concrete Composite Beams in Sagging and Hogging Moment Regions

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