A systematic review on CFST members under impulsive loading

Dabbagh, Noaman Mohammed Ridha; Badaruzzaman, Wan Hamidon Wan; Zand, Ahmed W. Al; Azad, Sina Kazemzadeh; Uy, Brian; Azmi, Mohd Reza; Alatshan, Faesal

doi:10.1016/j.tws.2022.109503

Cited by 19 publications

(3 citation statements)

References 65 publications

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“…The details of specimens are listed in Table 1, including the additional two control specimens of beam CB specimen and slab PDS. Generally, most of the existing research has placed hollow steel tube members vertically to pour the concrete inside; these were then placed horizontally after the concrete had set [38,44,45]. This concrete pouring scenario is considered to be a challenge at a construction site when CFST beams must be prepared.…”

Section: Specimens Preparationmentioning

confidence: 99%

Flexural Performance of a Novel Steel Cold-Formed Beam–PSSDB Slab Composite System Filled with Concrete Material

et al. 2023

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In this study, the flexural performance of a new composite beam–slab system filled with concrete material was investigated, where this system was mainly prepared from lightweight cold-formed steel sections of a beam and a deck slab for carrying heavy floor loads as another concept of a conventional composite system with a lower cost impact. For this purpose, seven samples of a profile steel sheet–dry board deck slab (PSSDB/PDS) carried by a steel cold-formed C-purlins beam (CB) were prepared and named “composite CBPDS specimen”, which were tested under a static bending load. Specifically, the effects of the profile steel sheet (PSS) direction (parallel or perpendicular to the span of the specimen) using different C-purlins configurations (double sections connected face-to-face, double separate sections, and a single section) were investigated. The research discussed the specimens’ failure modes, flexural behavior, bending capacity, bending strain relationships, and energy absorption index of specimens. Generally, the CBPDS specimens with the PSS slab placed in a parallel direction achieved approximately a 13–40% higher bending capacity compared with the corresponding specimens with a perpendicular PSS direction (depending on the configuration of the beam). Fabricating the beam of the CBPDS specimen with double C-purlins (face-to-face) led to more effective concrete confinement behavior compared with the double separate C-purlins beam. The related specimen recorded a 10% higher bending capacity. Finally, the suggested composite CBPDS system exhibited a sufficient energy absorption capability of the static bending load because it demonstrated high strength and high ductility.

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Section: Specimens Preparationmentioning

confidence: 99%

Flexural Performance of a Novel Steel Cold-Formed Beam–PSSDB Slab Composite System Filled with Concrete Material

et al. 2023

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“…In addition, the results revealed that columns with square sections showed a higher load resistance than that of rectangular section columns. Not only the static behavior, but the seismic, impact, and blast performance of CFST elements has also been widely examined using different shapes and material strength, and the enhancement of the seismic behavior was clearly demonstrated by filling the columns with concrete [8,9].…”

Section: Introductionmentioning

confidence: 99%

Design Model of Rectangular Concrete-Filled Steel Tubular Stub Columns under Axial Compression

et al. 2023

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This research collected and summarized a total of 455 experimental tests of axially loaded square and rectangular concrete-filled steel tubular (CFST) stub columns. The recently published papers were used to evaluate the current design equations from four international standards, namely the American Concrete Institute (ACI) code, British Standard (BS5400), Chinese standard (BDJ13-51), and Eurocode 4 (EC4). It was found that the results obtained from the codes have appreciable differences and could be improved, especially for the specimens fabricated using high-resistance materials. Therefore, new empirical equations were proposed based on the four standard formulas and the wide range of previously available experimental data to provide more accurate estimations. The proposed equations could predict an average sectional capacity of only 0.1% lower than the experimental results, with better data scattering than the existing equation’s results.

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“…Generally, the Concrete Filled Double Skin Tubes (CFDST) member has almost all identical advantages as the Concrete-Filled Steel Tube (CFST) members, with better flexural stiffness and strength performance than the corresponding hollow steel tube [4,12]. This innovative composite construction consists of two concentric steel tubes with concrete sandwiched between them.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of Concrete-Filled Double-Skin Hexagonal Tubular Beams Using Finite Element Analysis

Mazlan¹,

Zand²

2022

Kbes

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The Concete-Filled Double Steel Tube (CFDST) members usually prepared from Concrete-Filled Steel Tube (CFST) member with additional internal steel tube, in order to increase strength and reduce the selfweight of the composite member. The conventional square cross-sections are usually used for the CFDST beams. However, these sectionsthis square section are usually facing an outward buckling failure at the compression zone stress that usually occurred at the top flange of the CFDST beams under high bending loads. Additionally, using cross-section shapes with hexagonal and/or octagonal and/or decagonal could be to reduce the flatness width of the CFDST beam’s top flangem since they have smaller flatness width of their flanges than the square/rectangular tube’s cross section. Therefore, the aim of this research is to numerically study the flexural behavior of CFDST beam with hexagonal tubular cross-section under pure bending static loads by using finite element (FE) software named ABAQUS. First, the FE model was devloped and verified with the rated experimental tested results, then devloped and analysed additional models of hexagonal CFDST beams to investigate further parameters that not yet been investiated. Generally a total of 19 hexagonal CFDST models were analysed for this project to investigate the influnce of varied tube’s thickness (t), steel yielding strength (fy), concrete strength (fcu), inner to outer tube’s dimensions ratio (Di/Do), and different inner tube’s cross-sections shape (hexagon, square and circle). The result of the paper showed that by using double steel tube for the beam, the failure due to outward buckling can be reduced significantly. The ultimate bending capacity of the hexagon CFDST models were increased with increases of their steel/concrete strength, tube’s thickness and Di/Do ratio. For example, increasing the tube thickness from 1.5 mm 2.5 mm achieved an improvement in Mu values of about 41%. Meanwhile less improvement percentages was recorded when only the concrete strength increased. Furthermore, there are no much improvements have been recorded in the model’s bending capacity when used square or circle shape of inner tube’s cross-section the than the hexagonal shape. The energy absorption of the hexagon CFDST model have been improved according to the improvement of their loading strength capacities

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A systematic review on CFST members under impulsive loading

Cited by 19 publications

References 65 publications

Flexural Performance of a Novel Steel Cold-Formed Beam–PSSDB Slab Composite System Filled with Concrete Material

Flexural Performance of a Novel Steel Cold-Formed Beam–PSSDB Slab Composite System Filled with Concrete Material

Design Model of Rectangular Concrete-Filled Steel Tubular Stub Columns under Axial Compression

Flexural Behavior of Concrete-Filled Double-Skin Hexagonal Tubular Beams Using Finite Element Analysis

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