Push Over Analysis of Unstiffened Steel Plate Shear Wall

Steel Plate Shear Wall (SPSW) is made from thin steel plate which in turn are framed by the beams and columns of structural system. In recent year they are proved to be very effective and economical for resisting lateral loads such as earthquake and wind loads.The present work targets to study the behaviour of single frame SPSW with different plate thicknesses, rigid and non-rigid frame members, pinned and moment resisting joints. For this purpose, pushover analysis is performed using ANSYS. Push-over curves and distribution of stresses in the plate is demonstrated. A Comparative study for different stiffness of shear wall to resist the lateral loads is carried out. Ultimate load carrying capacity of the plate is determined for different model. It is found that the effect of stiffness of the beams and columns on the ultimate load carrying capacity of SPSW may be ignored until the members are strong enough to resist the force applied on them before tearing failure of plate. The ultimate load carrying capacity increases linearly with increasing the thickness of steel plate. For moment resisting frame with no shear plate, the initial stiffness is low, but it is increased by many folds when steel plate is also used to resist the lateral load. Keywords— Steel plate shear wall, push over analysis, stiffness, load-displacement curve, stress