Investigation on cold-formed steel lipped channel built-up I beam with intermediate web stiffener

Manikandan, P.; Thulasi, M.

doi:10.1007/s40091-019-0220-x

Cited by 10 publications

(11 citation statements)

References 15 publications

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“…Open sections from I sections [1,[4][5][6][7], lipped channels [8][9][10][11][12], C sections [2,[13][14][15][16] are presented. Research works of an open section from I section were assembled by screws [4,6,7] and bolts [5].…”

Section: Figure 1 Built-up Open Sectionsmentioning

confidence: 99%

“…Dar et al [10] on doing a study using lipped channel assembled back to back with angle stiffeners found that design strength computed as per North American specification [17]and European Code are conservative. Manikandan and Thulasi [11]on investigating lipped channel stiffened at intermediate web revealed that the provision of intermediate web and edge stiffeners will improve the behaviour and increase the strength of the section. Muftah et al [12] investigated bolted built-up samples of two types as extended stiffener and outstand stiffener.…”

Section: Figure 1 Built-up Open Sectionsmentioning

confidence: 99%

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Assessment on the Behaviour of Cold-Formed Steel Built-up Beams

Vijayanand

Gowshika

Greevan

et al. 2021

Recent Advancements in Geotechnical Engineering

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Abstract. Cold-formed steel, thin-walled steel product finds a wide application in construction worldwide. It has many advantages such as flexibility, convenient handling and fabrication and so on. The CFS is commonly used in structures like bridges, railway coaches etc., as it is economical when compared with hot-rolled steel. It can be used as single or built-up flexural members. Generally, the open section beams are susceptible to failure by lateral- torsional buckling due to the position of its centre of shear and centroid of the cross-section. To overcome this issue, open doubly-symmetric built-up sections or built-up closed sections have been used by many researchers. The parametric studies were conducted by many researchers to find the accuracy of the design strength predictions of the built-up beams. In parametric study, Eurocode specifications, the direct strength method and effective width method based on the North American specifications were used. The study reveals that there are no proper design guidelines available in the current Eurocode and North American specifications. Therefore, the paper provides an outline of research works done on various CFS sections by the researchers and their proposed design recommendations to the codal specifications were also reviewed.

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Section: Figure 1 Built-up Open Sectionsmentioning

confidence: 99%

Section: Figure 1 Built-up Open Sectionsmentioning

confidence: 99%

Assessment on the Behaviour of Cold-Formed Steel Built-up Beams

Vijayanand

Gowshika

Greevan

et al. 2021

Recent Advancements in Geotechnical Engineering

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“…Table 1 summarized a total number of 10 existing numerical studies on the CFS section under the flexural load between years 2013 to 2019. A total number of seven ( 7) studies [10], [25], [62]- [66] were mainly focused on the flexural capacity of built-up open/closed sections that are connected or attached to each other through the webs or flanges by the means of screws and bolts. Most of the CFS sections in the above-mentioned studies were in the shape of I, U and C sections to ease the building process of the desired open or closed sections.…”

Section: Interface Considerationmentioning

confidence: 99%

“…Furthermore, from the numerical analysis method perspective, all the summarized studies used nonlinear finite element analysis to evaluate the flexural behavior and validate the experimental results. Furthermore, five out of ten studies [10], [25], [62], [64], [66] used Abaqus software as a tool to perform the finite element analysis while the remaining studies used Ansys software. For the element type, the CFS single or built-up sections were modelled as shell element type in some of the studies such as [10], [25], [62]- [64], [66].…”

Section: Interface Considerationmentioning

confidence: 99%

“…Furthermore, five out of ten studies [10], [25], [62], [64], [66] used Abaqus software as a tool to perform the finite element analysis while the remaining studies used Ansys software. For the element type, the CFS single or built-up sections were modelled as shell element type in some of the studies such as [10], [25], [62]- [64], [66]. On the other hand, some researchers studied CFS filled with material such as concrete used the 3D solid element for CFS concrete discretization during the modelling process [33], [65], [67], [68].…”

Section: Interface Considerationmentioning

confidence: 99%

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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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