International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 06 | June 2022
p-ISSN: 2395-0072
www.irjet.net
Study The Structural Performance of Cold Formed Steel Sigma Face-toFace Concrete Column By Varying Its Screw Spacing Mekha S Babu1, Devu Asokan2 1Mekha
S Babu, M.Tech Student, Dept. of Civil Engineering, Sree Buddha College of Engineering, Kerala, India Asokan, Assistant Professor, Dept. of Civil Engineering Sree Buddha College of Engineering, Kerala, India ---------------------------------------------------------------------***--------------------------------------------------------------------2Devu
Abstract - To better understand the structural performance
of sigma section built-up box-section columns associated with axial compression tests and screw spacing are conducted. When the screw spacing was reduced from 600 to 150 mm, the load-bearing capacity increased by about 14.6%–17.5%. A finite-element model was developed and calibrated against the test results. A series of parametric analyses was carried out to analysis the effects of the screw spacing and shear stiffness on the elastic buckling load and ultimate load-carrying strength. The structural performances of the sigma section built-up columns under axial compression screw spacing test was studied through the ANSYS software. Key Words: Sigma Section, Built-up section, Screw Spacing, Column
1. INTRODUCTION Cold-Formed Steel (CFS) members are made from structural quality steel sheet that are formed into C-sections and other shapes by roll forming the steel through series of rollers which doesn’t required heat to form the shapes unlike hotrolled steel, thus the cold formed steel. CFS members Fig.1.1 used in bridges, railway coaches, highway products, transmission towers etc., and these types of cold-formed from steel sheet, strip, plate etc., in roll forming machines by bending operations, pressing, stamping, which is in the form of thin gauge sheets commonly used in construction industry for structural or non-structural items such as column, beam, studs, built- up sections and other elements. The difference between hot and cold formed steel is how they are processed. Hot rolled steel has been rolled at high temperature while cold rolled steel is essentially hot rolled steel is further processed in cold reduction materials. Cold rolling produces steel with closer dimensional tolerances and a wider range of surfaces finishes than hot rolling and up-to 20% stronger than hot rolled through the use of strength hardening. When making more precise shapes, the process involves: (a) breakdown (b) semi-finishing (c) sizing (d) semi-roughing (e) roughing (d) furnishing. Cold rolled steel results in a productwith a better more finished surface with closer tolerance, also yield smoother surfaces which are oily to touch. It can be used harder and stronger than hot rolled steel and aesthetically pleasing finish with wider range of surfaces.
© 2022, IRJET
|
Impact Factor value: 7.529
Fig.1.1 Sigma Face to Face Section In this thesis, a structural performance of sigma face to face column is studied. Also, built-up column with different screw spacing is also analysed. The modelling and analysis is done using finite element software ANSYS 21.
1.1 CFS Sigma column A cold formed steel with sigma shape is analyzed shown in Fig.1.2. The sigma sections with face to face column is analyzed by varying its screw spacing like 100mm, 150m and 200mm are used here. Material is used Q355 steel sheet along with these material provide ULCC1250 concrete. Quadruple is defined as a structure consisting of four parts or elements, four sections of CFS can be over-lap the column by using screws. The use of CFS built-up column to resist axial forces in CFS multistory buildings has gained high strength and lightweight structure.
|
ISO 9001:2008 Certified Journal
|
Page 3190