Stub Column Tests of Cold-Formed Steel Built-Up Square Sections with Intermediate Stiffeners

Aruna, G.

doi:10.1007/s11223-020-00176-9

Cited by 5 publications

(2 citation statements)

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“…Research works employing stiffeners in the web of a section were presented in [2,4,[13][14][15][16]. Web stiffeners are generally said to give better resistance to local buckling [1,2].…”

Section: Usage Of Web Stiffenersmentioning

confidence: 99%

Study on Strength and Behaviour of Cold-Formed Steel Built-up Columns

Sivasathya

Vijayanand

Prabha

et al. 2021

Recent Advancements in Geotechnical Engineering

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Abstract. Cold-formed Steel (CFS), a sort of steel weighing lesser, suits to be a wise choice of material in the construction of steel structures. It has more benefits that indeed make CFS get famous. Effortless installation can be accomplished with the CFS. It also renders a factor that only a few materials show, that is, longevity. Corrosion does not affect the CFS. Employing under moderate loads, CFS finds to be economically feasible when compared with hot-rolled steel. It can be used as compression members comprising single or built-up members. Since a single member cannot sustain the heavy load, the built-up members can be utilized. Open and closed sections are the two sorts of built-up profiles and these profiles show diverse buckling characteristics. This paper lays out a clear outline of the research works done on providing design recommendations to the codes by employing diverse built-up sections. It is reviewed by categorizing the investigated research works based on the kind of CFS sections chosen by each researcher. It was evident from the study that after validation, many researchers have done parametric study on CFS built-up columns to assess the accuracy of the design strength prediction by code specifications. Many codes failed to estimate the section’s ultimate capacity accurately as there are no specific design equations.

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“…Research works employing stiffeners in the web of a section were presented in [2,4,[13][14][15][16]. Web stiffeners are generally said to give better resistance to local buckling [1,2].…”

Section: Usage Of Web Stiffenersmentioning

confidence: 99%

Study on Strength and Behaviour of Cold-Formed Steel Built-up Columns

Sivasathya

Vijayanand

Prabha

et al. 2021

Recent Advancements in Geotechnical Engineering

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“…Ananthi et al [3] and Aruna et al [51,52] investigated the influence of stiffeners on coldformed steel angle sections. The CFS built-up open sections with edge and longitudinal web stiffeners in cold-formed steel channel sections were investigated by Zhang and Young [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Influence of Intermediate Stiffeners on Axial Capacity of Thin-Walled Built-Up Open and Closed Channel Section Columns

et al. 2022

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This paper investigates the post-buckling behaviour and axial capacity of thin-walled steel stiffened single-channel sections (ISSCS) and back-to-back stiffened channel sections (BISCS). BISCS were connected using fasteners at a spacing of 200 mm and with an edge distance of 100 mm. Under axial compression, 10 new ISSCS and BISCS columns with fixed-ended conditions were tested. In the experimental tests, the back-to-back channel sections failed due to a combination of local and global buckling, whereas the single-channel sections generally failed as a result of local buckling. The behaviour of both ISSCS and BISCS shows a 20% increase on an average in axial capacity through adding stiffeners at the junction of the flange and the web, in addition to stiffeners in the web. A nonlinear finite element model (FEM) with material and geometric nonlinearities was then developed. The FE model was validated against the experimental results. A comprehensive parametric study comprising 64 face-to-face intermediate stiffened channel sections (FISCS) was then conducted to study the influence of stiffener length on its axial capacity. The axial capacity obtained from the tests and FEA shows that design in accordance with the Direct Strength Method (DSM) is accurate and conservative by only 4% on average.

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