Pure Bending study on Cold Formed Steel- Latticed Built-up I beam
Mohammed Hashir S, Dr. K Sudha
Steel, Cold Formed Steel, Lacing, Direct Strength Method, Experimental Investigation.
Steel is a worldwide construction material, which is a combination of Iron and Carbon. There are two types of steel sections; one of the sections is Cold Formed Steel (CFS) section, which are used mainly in lightweight building applications. Features of CFS are lightness, high strength and stiffness, mass production and easy erection, economy in transportation and handling, non-combustibility, recyclable material. The advantages of CFS are that the yield strength of the steel is increased in cold forming due to the consequence of cold work into strain - hardening range. The predominant zones were increased where the metal is bent by folding. The effect of cold working is thus to enhance the mean yield stress by 15% - 30%. The yield stress may be enhanced by a minimum of 15%. In this project a Built-up I section has been created by using 4 angles connected back-to-back. The stiffeners were provided at the ends and 1/3rd of the span (loading point). Lacings were used to connect the angles and to improve the moment carrying capacity of the section. The theoretical calculation as per North American Specification of Cold Formed Steel (AISI S-100:2007) has been investigated and modes of failure has been observed. Additionally experimental study has been performed for specimens fabricated by varying different sectional properties and compared with the theoretical results.
Article Details
Unique Paper ID: 155777

Publication Volume & Issue: Volume 9, Issue 1

Page(s): 1897 - 1907
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