Asian Journal of Civil Engineering

, Volume 20, Issue 2, pp 171–185 | Cite as

Experimental theoretical and numerical studies on cold-formed steel stub channel columns with stiffeners

  • G. Beulah Gnana AnanthiEmail author
  • B. Ashvini
Original Paper


This present work gives a detailed description on the experimental theoretical and numerical investigation on plain and lipped cold-formed steel built-up stub channel columns of 300 mm length. The columns are tested as fixed end condition with provision of stiffeners in the lip, flange or in the web portions. A total of 12 built-up plain columns and 9 built-up lipped columns are tested either as box or back to back configuration is studied for their failure pattern. The effect of load against axial shortening, load against lateral deflection, and load against strain behavior and the influence of stiffeners at various positions in the load carrying capacity are discussed in detail. Doubly symmetric plain section screwed back to back failed by plate buckling at the mid-height. Doubly symmetric plain face to face welded section failed by flexural buckling at the mid-height or at the top/bottom corner. Provision of stiffeners in the intersection of flange and web does not show a drastic increase in load when compared to providing stiffener in the web.


Cold-formed steel Built-up columns Stub columns Web stiffened columns Flange stiffened columns Local buckling 



Gross area of the section mm2


Overall lip depth


Modulus of elasticity (N/mm2)


Yield stress


Effective length factor


Unbraced member length


Critical elastic distortional column buckling


Critical elastic flexural column buckling


Critical elastic local column buckling


Nominal axial strength


Nominal axial strength for distortional buckling


Nominal axial strength for flexural buckling


Nominal axial strength for local buckling


Finite element modeling


Yield strength member


Overall width


Ultimate tensile strength of steel (N/mm2)


Yield point of the steel (N/mm2)


Overall depth


Minimum radius of gyration


Base metal thickness


Slenderness ratio


Slenderness ratio for distortional buckling


Slenderness ratio for flexural buckling


Slenderness ratio for local buckling


Cold-formed steel


Direct strength method


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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Department of Civil EngineeringAnna UniversityChennaiIndia

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