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Structural Engineering and Mechanics Volume 46, Number 3, May10 2013 , pages 323-335 DOI: https://doi.org/10.12989/sem.2013.46.3.323 |
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Study on the effect of ties in the intermediate length Cold Formed Steel (CFS) columns |
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M. Anbarasu, S. Bharath Kumar and S. Sukumar
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| Abstract | ||
| This work aims to study the effect of stiffener ties in the behavior of intermediate length open section Cold-Formed Steel (CFS) Columns under axial compression. A comparative study on the behaviour and strength of Cold Formed Steel Columns by changing the direction of projection of lips (i.e., inwards or outwards) are also done. In this work two types of sections were considered Type-I section with lip projecting outwards (hat) and Type-II section with lip projecting inwards (channel). The length of the columns is predicted by performing elastic buckling analysis using CUFSM software. The theoretical analysis is performed using DSM - S100;2007, AS/NZ: 4600-2005 and IS: 801-1975. The compression tests are carried out in a 400 kN loading frame with hinged-hinged end condition. The non-linear numerical analysis is performed using Finite Element software ANSYS 12.0 to simulate the experimental results. Extensive parametric study is carried out by varying the width and spacing of the stiffener ties. The results are compared; the effects of stiffener ties on behaviour and load carrying capacity on both types of columns are discussed. | ||
| Key Words | ||
| cold-formed steel; columns; pallet racks; axial compression member; thin walled members; distortional buckling; stiffener ties | ||
| Address | ||
| M. Anbarasu, S. Bharath Kumar and S. Sukumar: Department of Civil Engineering, Government College of Engineering, Salem - 636 011, Tamilnadu, India | ||