Open AccessAnalysis of Retrofitted Cold Formed Steel Multistory Building Frame
Author(s) -
U. Anil Kumar,
Aravind Kumar B Harwalkar
Publication year - 2021
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.k9468.09101121
Subject(s) - structural engineering , bracing , low rise , retrofitting , ductility (earth science) , slab , seismic loading , opensees , wind engineering , structural load , stiffness , seismic retrofit , shear (geology) , engineering , shear strength (soil) , geotechnical engineering , geology , finite element method , materials science , reinforced concrete , brace , creep , composite material , petrology , soil science , soil water
The cold formed steel section are increasingly used as a structural elements in low rise buildings in recent times, due to the advantages like economic production, easy transportation, low labor cost and high strength to weight ratio. In the current work a G+3 storied building frame is studied for seismic and wind load using Staad-pro software. Light gauge section is taken for beam and slab elements. The seismic analysis is carried out by Equivalent static method. After analysis the results such as story displacement, story drift, Base shear and time period are compared for different models. The building frame is also analyzed for wind load. In the current work cross bracing using Light gauge element used as a retrofitting technique. The retrofitted building frame is analyzed for wind and seismic loads and results obtained for time period, storey displacement, storey drift and base shear values are compared with the corresponding values of base frame. The results of retrofitted frame showed shortening in time period, storey displacement and story drift values in X&Z directions indicating the increased ductility, Stiffness and strength of structure. Hence the proposed retrofitting technique could be believed to achieve success results in increased strength and ductility values required by wind and seismic loading.