Experimental Investigation of Novel Angle Bracket Connection in Cold-Formed Steel Structures

Lukačević, Lazar; Krolo, Paulina; Bakran, Antonio

doi:10.3390/buildings12081115

Cited by 5 publications

(12 citation statements)

References 7 publications

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“…The Partial safety factor 𝛾 𝑀2 was neglected to obtain the characteristic value of the bearing resistance. Both calculation methods used average values of experimentally determined material properties [2]. The 3 mm (𝑡 1 ) thick DX51D steel of the U-connector has an average tensile strength of 414.07 MPa (𝑓 𝑢,1 ), while the 1.15 mm (𝑡 2 ) thick S550 GD steel of the C-profile has an average tensile strength of 704.98 MPa (𝑓 𝑢,2 ).…”

Section: Calculation Of Bearing Resistance Of Connectionmentioning

confidence: 99%

“…To achieve continuity of the beam trusses over more spans while keeping the truss beams in between wall panels, a connection with two innovative connectors for the CFS members has been designed (Figure 1). One of these connectors is a novel angle bracket that was introduced in a previous study [2]. It can be used to anchor CFS members and panels and to connect truss ends to steel, concrete, or other common structures.…”

Section: Introductionmentioning

confidence: 99%

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Shear Behaviour of Novel U‐connector in CFS Truss‐to‐Column Connection

Lukačević,

Krolo,

Bakran

et al. 2023

ce papers

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This research investigates the behaviour of the novel U‐connector used in cold‐formed steel (CFS) truss‐to‐column connection. The novelty is reflected in the specially designed connector geometry and the connection method within the cross‐section of the thin‐walled C‐profile. The U‐connector installed inside the truss‐to‐column connection can be exposed to tensile, compressive and shearing action. The shear behaviour of the U‐connector is thoroughly investigated using laboratory tests. Three different loading scenarios are carried out to evaluate the shear strength of the U‐connector within the C‐profile connection. The detailed analysis is carried out using Digital Image Correlation (DIC) technique for measuring the displacement. The failure modes observed during the experiments are described and analysed. DIC technology is used to accurately identify the failure initiation of each component in the connection. In addition, two different methods for calculating the bearing resistance of the U‐connector and the C‐profile connection are proposed according to recommendations given in the standard EN 1993‐1‐3. These methods aim to provide accurate estimates of the connection's bearing capacity.

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Section: Calculation Of Bearing Resistance Of Connectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Shear Behaviour of Novel U‐connector in CFS Truss‐to‐Column Connection

Lukačević,

Krolo,

Bakran

et al. 2023

ce papers

Self Cite

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show abstract

“…In order to address this issue and increase the initial elastic stiffness, an optimization of the proposed connection was carried out. Furthermore, an analysis of the angle bracket alone in the previous work showed that its elastic stiffness was about 7.7 kN/mm [19]. The optimization was designed to maximize the use of the angle brackets in the truss beams while minimizing the load-transmitting role of the U-connector and CFS column in the tension and compression components of the connection.…”

Section: Optimisation Of Cfs Connection Under Compression Loadingmentioning

confidence: 99%

“…In order to achieve continuity of the trusses over more spans and at the same time keep the trusses submerged between walls, a connection with two innovative connectors for CFS members has been designed (Figure 1). One of these connectors is a novel angle bracket that was presented in a previous study [19]. It can be used to anchor CFS members and panels and to connect truss ends to CFS columns, concrete, steel or other common structures.…”

Section: Introductionmentioning

confidence: 99%

“…The U-connector has pre-drilled holes for self-tapping screws with a diameter of 5.2 mm, while the C-profile has clearance holes with a diameter of 6 mm. The One of these connectors is a novel angle bracket that was presented in a previous study [19]. It can be used to anchor CFS members and panels and to connect truss ends to CFS columns, concrete, steel or other common structures.…”

Section: Introductionmentioning

confidence: 99%

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Performance of Novel U-Connector in CFS Truss-to-Column Bolted Connection under Axial Force

et al. 2023

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This paper presents an experimental and numerical investigation of the tensile and compressive behaviour of a novel U-connector in the cold-formed steel (CFS) truss-to-column connection. Tensile tests were performed on 12 specimens representing the tension chords of the trusses in the connection. The results were used to validate a finite element model. The validated model was then subjected to both compressive and tensile loads, which revealed low stiffness in both the compressive and tensile components of the proposed connection. An optimisation of the geometry by using one long nut instead of two nuts was carried out to improve the behaviour and stiffness of the connection. The optimised results were compared with both experimental and numerical data, and conclusions were drawn regarding the effectiveness of the components in the proposed connection. The use of long-nut optimisation in the tension and compression components of the proposed connection shows a significant increase in load-bearing capacity, which makes it very promising for future applications in CFS truss-to-column connections. However, further validation through experimental testing is required to confirm the effectiveness and reliability of the connection in full-scale structures.

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Numerical Study on the Behaviour of Built-up Cold-Formed Steel Corrugated Web Beams End Connections

et al. 2023

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Corrugated web beams made of cold-formed steel components represent an economical solution for structures, offering high flexural capacity and deformation rigidity. For conventional corrugated web beams, made of thick plates for the flanges and thin sinusoidal steel sheets for the web, the elements can be joined by standard bolted end-plate connections. In the case of corrugated web beams made of thin-walled cold-formed steel components only, additional plates are required to accommodate the shape and position of the profiles. A large experimental program was carried out on corrugated web beams made of cold-formed steel elements. One of the objectives was to determine the capacity of these beams and the influence of several parameters on the response of the beam, but also very important were the end connections of these beams. The recordings obtained from the tests were used to validate a numerical model. Based on the validation of the numerical model, finite element analyses were performed to study four solutions for end connections to facilitate assembly, optimise the number of bolts, and increase the capacity and rigidity. Although the connection can be improved for assembling reasons with the presented solutions, the overall capacity is limited by the components subjected to compression that lose their stability. Doi: 10.28991/CEJ-2023-09-04-01 Full Text: PDF

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Experimental Investigation of Novel Angle Bracket Connection in Cold-Formed Steel Structures

Cited by 5 publications

References 7 publications

Shear Behaviour of Novel U‐connector in CFS Truss‐to‐Column Connection

Shear Behaviour of Novel U‐connector in CFS Truss‐to‐Column Connection

Performance of Novel U-Connector in CFS Truss-to-Column Bolted Connection under Axial Force

Numerical Study on the Behaviour of Built-up Cold-Formed Steel Corrugated Web Beams End Connections

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