RETROFITTING OF STRUCTURAL STEELCHANNEL SECTIONS USING COLDFORMED STEEL ENCASING CHANNELS

  • Miss Renuka Bhausaheb Pawar, Prof. Mayur Singi

Abstract

In this paper an effective retrofitting technique for hot rolled channel section (HRS) is introduced. Effective technique includes transformation of hot rolled channel section to a closed composite section by encasing it with a cold formed channel section (CFS) which makes section stronger than other retrofitting techniques and increases its torsional rigidity to restrain failure due to lateral-torsional buckling (LTB). A new retrofitting approach is also carried out by encasing partially cold formed section. The analysis is been carried out by using Finite Element Modelling. The unification of the HRS–CFS section was ensured by sufficient spot welding of the CFS section to the HRS at well-ordered intervals along the length of the member. The test result indicating that the load carrying capacity of composite HRS-CFS section increased up to 60% as compare to control specimen. The structural behavior of the connection including the load -total deformation curve, load - lateral deformation and interconnection spacing were studied. Keywords: Cold formed steel (CFS) retrofitting, finite element modeling (FEM), Interconnection spacing, spot welding, restraining lateral torsional buckling (LTB).
How to Cite
Miss Renuka Bhausaheb Pawar, Prof. Mayur Singi. (1). RETROFITTING OF STRUCTURAL STEELCHANNEL SECTIONS USING COLDFORMED STEEL ENCASING CHANNELS. ACCENT JOURNAL OF ECONOMICS ECOLOGY & ENGINEERING ISSN: 2456-1037 INTERNATIONAL JOURNAL IF:7.98, ELJIF: 6.194(10/2018), Peer Reviewed and Refereed Journal, UGC APPROVED NO. 48767, 6(8), 135-141. Retrieved from https://ajeee.co.in/index.php/ajeee/article/view/2144
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