Investigating the Effect of Dimensions of CircularOpening on Seismic Behavior of Steel Plate ShearWalls Using Time History Analysis

Retrofitting buildings against lateral load in the shelf life of buildings is always one of the determinativeconcerns and factors for designers. In addition to the use of systems like momentframes and braces, applying shear walls as one of the main options in designs is raised. Thisarticle investigates the effect of dimensions of circular opening on the center of steel shearwalls. In the steel shear walls system, circular openings with different shapes and sizes can beused if needed. Steel shear walls act like cantilevered plate girders in which the columnsserve as their flanges, the floor beams as their stiffener, and steel sheets as their web. The basisof the idea of shear walls, which has been seriously considered in the last three decades, isthe use of a diagonal tensile field in which a steel sheet is created after buckling. In order toinvestigate the effect of the size of the circular opening on six types of frames with differentdimensions, the displacement of the upper level of the frame was investigated. According tothese investigations, it was found that the wall stiffness decreases linearly with an increasingcircular opening. In general, it can be concluded that the shear panel with or without the circularopening has a better function than the frame without a shear wall.

کلیدواژه ها:

vibration control ، steel shear wall ، circular opening ، analysis of temporal history