The general objectives of this study are to improve the displacement performance of the structure with the U-shaped shear wall by various methods, i.e. additional shear wall, increasing the section of the existing shear wall and viscous wall damper. U-shaped shear walls are used for the elevator shaft, and they provide additional stiffness in both directions to the buildings. Viscous wall damper absorbs the energy by the high-viscosity fluid during the earthquakes and winds. It is sometimes necessary to improve the displacement performance of the building during the design phase, and unfortunately, this improvement can be done by limited options due to architectural demand. Therefore, three 12-story buildings are designed by the mode-superposition method according to the Turkish Seismic Design Code, and the evaluation of the target buildings has been made using the Japanese design response spectrum to see the response of the buildings. Additional shear wall, increasing the section of the existing shear wall and viscous wall damper methods are applied to the buildings with U-shaped shear walls which one of the buildings has an eccentricity in the plan. Comparison of the seismic behaviors of the target buildings, including displacement and inter-story drift have been done using selected recorded and artificial ground motions by nonlinear time history analysis. IdeCAD structural software was used for design, and STERA 3D was used for observing the displacement performance of the target buildings. Cost comparison of three methods used in this report has been performed.
Keywords: Displacement, shear wall, viscous wall damper, NTHA