Flexural Strength Evaluation of Multi-Cell Composite T-Shaped Concrete-Filled Steel Tubular Beams

Shen, Yanfei; Tu, Yongqing

doi:10.3390/ma14112838

Cited by 11 publications

(4 citation statements)

References 30 publications

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“…This system was suggested as another type of composite steel beam-concrete system that can achieve several advantages related to strength, ductility, and cost impact [18][19][20]. These studies used different analysis methods (experimental and numerical methods) and under varied loading scenarios (static, impact, and cyclic) [21][22][23][24][25][26][27][28], as well as the behavior of a combination of multi-cells of CFST beams [29,30]. In addition, adopting the cold-formed steel tube sections in the CFST beams system was suggested since it can be easily fabricated with any shape and thickness that is required for the design requirements [31][32][33][34][35].…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…Furthermore, concrete-filled steel tube (CFST) members showed sufficient structural behavior under different types of bending loads [ 15 , 16 , 17 , 18 ]. Using slender steel tube sections in composite CFST members will reduce the structural member’s cost, but it will buckle at an early loading stage compared to the non-compact and compact tubes’ sections.…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Bending Strength of a Composite Steel Beam–Slab Member Filled with Recycled Concrete

et al. 2023

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This study investigated the structural behavior of a beam–slab member fabricated using a steel C-Purlins beam carrying a profile steel sheet slab covered by a dry board sheet filled with recycled aggregate concrete, called a CBPDS member. This concept was developed to reduce the cost and self-weight of the composite beam–slab system; it replaces the hot-rolled steel I-beam with a steel C-Purlins section, which is easier to fabricate and weighs less. For this purpose, six full-scale CBPDS specimens were tested under four-point static bending. This study investigated the effect of using double C-Purlins beams face-to-face as connected or separated sections and the effect of using concrete material that contains different recycled aggregates to replace raw aggregates. Test results confirmed that using double C-Purlins beams with a face-to-face configuration achieved better concrete confinement behavior than a separate configuration did; specifically, a higher bending capacity and ductility index by about +10.7% and +15.7%, respectively. Generally, the overall bending behavior of the tested specimens was not significantly affected when the infill concrete’s raw aggregates were replaced with 50% and 100% recycled aggregates; however, their bending capacities were reduced, at −8.0% and −11.6%, respectively, compared to the control specimen (0% recycled aggregates). Furthermore, a new theoretical model developed during this study to predict the nominal bending strength of the suggested CBPDS member showed acceptable mean value (0.970) and standard deviation (3.6%) compared with the corresponding test results.

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“…The advancement in technology has developed new methods of constructing engineering structures. Engineers widely use concrete-filled steel tubes (CFSTs) in high-rise buildings due to their numerous advantages in normal and extreme weather conditions [6][7][8][9][10][11][12][13][14][15][16][17]. Different variants of CFSTs have also been employed due to their better performance.…”

Section: Introductionmentioning

confidence: 99%

“…Different variants of CFSTs have also been employed due to their better performance. A recycled aggregate infilled CFST [13], preplaced aggregate CFST [14], multi-cell composite CFST [16], CFST with external steel confinement [18], and concrete-filled double steel tubes (CFDSTs) [19,20] are some of the common types of CFSTs currently being used. CFDST columns are composite columns with outer and inner steel tubes, whereas concrete is sandwiched between these tubes.…”

Section: Introductionmentioning

confidence: 99%

Axial Behavior of Concrete-Filled Double-Skin Tubular Stub Columns Incorporating PVC Pipes

et al. 2021

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This experimental study presents concrete-filled double-skin tubular columns and demonstrates their expected advantages. These columns consist of an outer steel tube, an inner steel tube, and concrete sandwiched between two tubes. The influence of the outer-to-inner tube dimension ratio, outer tube to thickness ratio, and type of inner tube material (steel, PVC pipe) on the ultimate axial capacity of concrete-filled double-skin tubular columns is studied. It is found that the yield strength of the inner tube does not significantly affect the ultimate axial capacity of concrete-filled double-skin tubular composites. With the replacement of the inner tube of steel with a PVC pipe, on average, less than 10% strength is reduced, irrespective of size and dimensions of the steel tube. Hence, the cost of a project can be reduced by replacing inner steel tubes with a PVC pipes. Finally, the experimental results are compared with the existing design methods presented in AISC 360-16 (2016), GB51367 (2019), and EC4 (2004). It is found from the comparison that GB51367 (2019) gives better results, followed by AISC (2016) and EC4 (2004).

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Flexural Strength Evaluation of Multi-Cell Composite T-Shaped Concrete-Filled Steel Tubular Beams

Cited by 11 publications

References 30 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

Prediction of the Bending Strength of a Composite Steel Beam–Slab Member Filled with Recycled Concrete

Axial Behavior of Concrete-Filled Double-Skin Tubular Stub Columns Incorporating PVC Pipes

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