Resumen de Effects of using st52 steel on lightening industrial frames components
When determining size of the industrial structural frames components, priority is given to displacement, stress, or strength. The strategy of lightening industrial frames depends on the dominant factor. In the present study we investigate effects of using ST52 high strength steel on lightening industrial frames components. The models are loaded based on Chapter 6 of National Building Regulations of Iran (2013 Edition), and designed using AISC-LRFD Code. In the designed models, hangar span and height of columns are variable and other hangar specifications are considered as constants. The hangars are single-span type; hangar spans are 12m, 15m, 20m, 25m, and 30m; useful heights of hangars are 6m, 8m, 10m, and 12m; and length of all hangars is selected 42m. 3D and 2D models of the frames are designed and analyzed using SAP2000 software; and a statistical model of the results for frame weight, maximum column web, and maximum beam (rafter) web was developed. The results suggested that in hangars where stress and strength are the dominant factors, using ST52 steel helps reducing weight of the industrial frames, while in hangars where displacement is the dominant factor, changing type of material from ST37 to ST52 has practically no effect on lightening the structure. Also, using high strength steel has maximum effect on reducing thickness of the steel, provided that no buckling is generated in the section.
