STUDY ON THE BEHAVIOUR OF MULTISTOREYED STEEL FRAMED BUILDING WITH STEEL PLATE SHEAR WALLS UNDER SEISMIC FORCES

Steel plate shear walls are used to resist the horizontal shear forces that are generated due to earthquake and wind. Advantages of using Steel plate shear wall is high initial stiffness, strength, ductility, absorption capacity and stable hysteresis loops. Steel plate shear wall consists of a Vertical boundary elements (VBE) i.e. columns, Horizontal boundary elements (HBE) i.e. beams and infill steel plate, usually infill plate is welded to VBE and HBE. Unstiffened and stiffened are the types of steel plate shear walls. This paper is based on behaviour of unstiffened steel plate shear wall. A symmetric 10 storey steel building is modelled in ETABS considering gravity, wind and earthquake loads. The lateral forces obtained from ETABS for the most critical load combination is applied on to Finite element model of 10 storey steel plate shear wall. Finite element modelling is done using ANSYS software. Various models with thicknesses of 6mm, 8mm, 10mm, 12mm, 16mm and 20mm are rendered and the results so obtained of stress plots and lateral displacement are compared. Further, yield strength of infill plate is varied to check whether low yield strength infill plate can be used in steel plate shear walls. Stiffness of HBE is varied by keeping VBE stiffness constant and Stiffness of both VBE and HBE is taken same and their behaviour is compared.