Compression tests of built-up cold-formed steel hollow flange sections

Sivakumar, K.; Mahendran, Mahen; Dias, Yomal; Zhao, Wen-Bin

doi:10.1016/j.tws.2017.03.004

Cited by 20 publications

(6 citation statements)

References 16 publications

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“…These built-up sections can be attached together using either conventional connection method such us bolting and arc-welding or long-lasting method such as blind rivets, self-drilling, or self-tapping screws. Several studies on the behavior of the built-up CFS columns as can be seen in works done by [20]- [23]. On the other hand, the flexural behavior of built-up section beams were investigated in some studies such as [24]- [27].…”

Section: Built-up Cfs Sectionsmentioning

confidence: 99%

An Overview of Numerical Studies on Flexural Performance of Built-Up Cold-Formed Steel Beam (CFSB) Filled with Concrete

2021

IJETER

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Cold-formed steel (CFS) built-up sections have been recently introduced with other materials such as concrete connected by means of bolting and screws to avoid the problems of the CFS sections buckling. The flexural analysis of CFS-concrete composite beam is more complicated in terms of design and failure mode. Therefore, this paper attempts a short review on the numerical studies of CFS section with and without concrete under the flexural load. In particular, the CFS buckling failure modes were critically reviewed. Furthermore, the important considerations such as material properties definition and interactions during the numerical simulation were discussed. The review presented in this paper highlights considerable potential on how the nonlinearities of the concrete material, CFS-concrete interaction and connection types affect the level of simulation accuracy in predicting the flexural behavior of the composite beam. Moreover, the connections type, the nonlinear simulation methods and strategies and findings for the CFS-concrete flexural behavior were critically reviewed. The directions of the future research were provided through the concluded remarks and recommendations in achieving a higher accuracy of simulation results as well as more effective design philosophy in future to promote the utilization of CFS composite beam in construction industry.

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Section: Built-up Cfs Sectionsmentioning

confidence: 99%

An Overview of Numerical Studies on Flexural Performance of Built-Up Cold-Formed Steel Beam (CFSB) Filled with Concrete

2021

IJETER

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“…Rivet fastened hollow flange channel section provides an alternative to retaining high torsional rigidity while eliminating the high cost of welding along the web to flange joints. However, Kesawan et al [6] found that the reduction in the ultimate capacity of axially loaded rivet-fastened hollow flange channel section (HFC) can be about 40% of the ultimate capacity of an equivalent welded HFC section. The ultimate compression capacity of the proposed stiffened channel section, normalized to its yield capacity, is equivalent to that of the LSB.…”

Section: Overall Performance Of Web-stiffened Channel Sectionmentioning

confidence: 99%

“…Fire performance of LSF walls made with rivet fastened HFC sections is yet to be assessed. Regardless, the prospects of a successful outcome are low, as Kesawan et al [6] showed that the ultimate compression capacity of rivet fastened HFC sections could be as much as 40% lower than that of an equivalent welded section. Web stiffening options are increasingly used in modern cold-formed steel sections to enhance their structural performance.…”

Section: Introductionmentioning

confidence: 99%

07.31: Fire performance of LSF walls with web stiffened channel sections using finite element analysis

2017

Self Cite

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Light-gauge steel framed (LSF) walls with plasterboard lining are increasingly used in modern building construction due to their numerous advantages. Their fire performance has been investigated using both numerical and experimental studies in the past for lipped channel section (LCS) and welded hollow flange section (HFC) studs. A new riveted HFC stud was also considered. However, no attempt was made to use a structurally and economically optimum stud section in the wall configurations. This paper investigates the fire performance of a new stiffened channel section (SCS) as LSF wall studs. The proposed section succeeds in delaying both local and distortional buckling modes. At ambient temperature, the member compression capacity of each stud section, normalized to its squash capacity, was used to compare the performance of the three sections. It was found that the performance of SCS is equivalent to the LSB and superior to the LCS. The fire performance of LSF wall studs made of LCS, LSB, and the proposed section has also been assessed for three common wall configurations using finite element (FE) analyses. The walls were exposed to the standard ISO 834-1 fire curve on one side. Stud time-temperature profiles were developed for the three wall configurations using finite element thermal analyses and validated using available full-scale fire test data. Fire Resistance Levels (FRL) of load bearing and non-load bearing walls were determined and validated using previous experimental and numerical results. For the same load ratio, the three stud sections perform similarly, giving close FRL values for each of the configurations considered. Due to the elimination of the necessity for welding or riveting, it is proposed that SCS is used to develop structurally and economically optimum LSF walls compared to those made using LCS and welded or riveted HFC sections. FRL versus Load Ratio curves were developed for the full range of load ratio using both steady and transient state FE analyses. Using them, the susceptibility of cavity insulated, non-load bearing LSF walls to failure due to structural inadequacy was also identified.

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“…Ma et al [7] also have suggested design equations for CFS tubular beams. However, it is observed that CFS hollow flange built-up sections are structurally more competent than the usual open channel sections [8]. e flexural performance of conventional built-up sections can be enhanced by means of hollow flange sections as a large amount of mass is placed away from the strong section axis [9].…”

Section: Introductionmentioning

confidence: 99%

“…e former process is quite complicated compared with the latter because the hollow flange elements are well-connected (top and bottom of the web) and secured by means of rivet/screw or spot welding. In addition, the latter with different grades and thickness can be used for T-section (web and flange) [8]. Furthermore, the residual stresses and initial geometric imperfections which differ from common hot-rolled and CFS may be introduced if the sections are fabricated by coldforming a single sheet [2].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Effect of Hollow Tubular Flange Sections on the Behavior of Cold‐Formed Steel Built‐Up Beams

Shanmugam¹,

Manikandan²,

Awoyera

et al. 2021

Advances in Civil Engineering

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This paper deals with a study conducted on flexural behavior of cold-formed steel built-up I-beams with hollow tubular flange sections. There were two types of test sections, namely, built-up sections that were assembled with either stiffened or unstiffened channels coupling back-to-back at the web and a hollow tubular rectangular flange at the top and bottom of the web to form built-up I-beam. The flexural behavior along with the strength and failure modes of the built-up sections was examined using the four-point loading system. Nonlinear finite element (FE) models were formulated and validated with the experimental test results. It was observed that the developed FE models had precisely predicted the behavior of built-up I-beams. Further, the verified FE models were used to conduct a detailed parametric study on cold-formed steel built-up beam sections with respect to thickness, depth, and yield stress of the material. The flexural strength of the beams was designed using the direct strength method as specified in American Iron and Steel Institute (AISI) for the design of cold-formed steel structural members and was compared with the experimental results and the failure loads predicted from FE models. Since the results were not conservative, a new customized design equation had been mooted and delineated in the study for determining the flexural strength of cold-formed steel built-up beams with hollow tubular flange sections.

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Compression tests of built-up cold-formed steel hollow flange sections

Cited by 20 publications

References 16 publications

An Overview of Numerical Studies on Flexural Performance of Built-Up Cold-Formed Steel Beam (CFSB) Filled with Concrete

An Overview of Numerical Studies on Flexural Performance of Built-Up Cold-Formed Steel Beam (CFSB) Filled with Concrete

07.31: Fire performance of LSF walls with web stiffened channel sections using finite element analysis

A Study on the Effect of Hollow Tubular Flange Sections on the Behavior of Cold‐Formed Steel Built‐Up Beams

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