The Effect of Trapezoidal Corrugated Steel Plates and Coupling Beam Action on the Seismic Behavior of Coupled Steel Shear Wall Systems

Though steel shear walls have proven effective, they are limited due to the opening on their bay. To address this, coupled shear walls can be used. Consequently, there has been widespread use of corrugated sheets in the steel shear walls for low- and mid-rise buildings. However, there are limited studies on coupled shear walls. Hence, as a symbol of low- and mid-rise buildings, this study utilized Abaqus software to model samples of coupled steel shear wall 3-, 6-, and 12-story buildings. Under push over-analysis of up to 4% roof drift, the study investigated how trapezoidal corrugated steel plate with vertical and horizontal waves impact four key factors: bearing capacity, energy dissipation, degree of coupling, and behavior coefficient, and ductility ratio of the coupled steel shear wall. In the models, the study assessed the effect of increasing both the cross-sectional area of coupling beam and coupling beam's length. The results demonstrate that vertical and horizontal corrugated sheets cause a reduction of three factors: the base shear, degree of coupling, and energy dissipation. Besides, behaviour coefficient and ductility ratio decreases in the vertical corrugated sample and increases in horizontal corrugated sample. Furthermore, increasing the beam's length or cross-sectional area causes a decrease in four factors: the bearing capacity, coefficient of behaviour, ductility, and energy dissipation ratio. The degree of coupling decreases in the vertical corrugated samples and increases with the horizontal wave. Moreover, the degree of coupling increases in both cases of flat and corrugated steel sheets, increasing the number of stories.