ANALYSIS AND DESIGN OF TURBINE BUILDING USING HIGH STRENGTH STEEL

Abstract

Structural steel is advantageous material in construction industry because of its constructability and high strength to mass ratio. Steel frame is composed of structural steel members of different shape and size, which is connected with each other to transfer loads and provide complete rigidity against heavy loads. Steel frame can be built in a couple of days rather than weeks, with 20% to 40% reduction in construction time compared to on site construction. Now a day’s in steel frame, structural components are used of medium strength steel grade E250 and E350. Grade E250 is used in general fabrication, storage tanks, structural member, etc. Grade E350 steel is utilized in projects where average strength is required without compromising weldability and ductility. Since rising price of materials requires reduction in weight of the structure, use of High Strength Steel (HSS) is increased and it fulfills the most of constructional requirements. The HSS is developed to provide the beneficial mechanical properties and excessive corrosion resistance than conventional grade steel. With the reduced weight, steel provides higher strength to the structure against heavy loads. In this research, E450 and E350 grade steels have been used to design the turbine building. Dead, Live, Wind, Seismic and Crane loads are applied to the turbine building as per IS 875:1987, IS 875:2015, IS 1893(1):2002, and IS 1893(4):2005, respectively and designed as per IS 800:2007 using Staad.pro software. Built-up, Indian, and Jindal sections are provided to the structural elements. After the comparison of results of E350 and E450 grade steels, it is concluded that by using HSS, the reduction in steel up to 15%. Structural member size decreases and hence overall weight of the turbine building is reduced. Reduction of steel results in overall construction cost.