COMPARATIVE STUDY OF COUPLED SHEARWALL WITH CANTILEVER SHEARWALL ON TRANS ICON SURABAYA TOWER C BUILDING

Abstract

The selection of shear wall type and configuration in building structures is influenced by factors such as floor plan layout, location, seismic zone, and soil conditions. In high-rise building planning, structural modeling is used to determine the most effective shear wall arrangement. This study models the Trans Icon Surabaya Tower C, a 36- story building with a height of 128.05 m, using ETABS software to analyze inter-story drift and base shear due to earthquake forces. A quantitative-comparative method is applied to evaluate structural responses of two models: cantilever shear wall and coupled shear wall. The analysis results show that the coupled shear wall model produced a maximum inter-story drift of 55.440 mm and a base shear of 18,292.94 kN, slightly higher than the cantilever model, which resulted in 55.385 mm and 17,824.59 kN respectively. The reinforcement for the coupled shear wall consists of D22 @150 mm longitudinal bars, 2D16 @200 mm transverse bars, and special boundary confinement using 10D16 @100 mm ties over a length of 1600 mm. The coupling beam uses 10D28 for flexural reinforcement and 2D16 @50 mm for shear reinforcement. All structural elements meet strength and detailing requirements based on SNI 2847:2019. In conclusion, the use of coupled shear walls enhances lateral stiffness while ensuring structural safety and efficiency.