Numerical and experimental investigation of the behavior of corrugated steel shear walls with circular openings

Steel plate shear walls (SPSW) have been used as a lateral-load-resisting system of buildings in seismic areas. The main advantage of the SPSWs is their ductility and high strength. By changing the geometry of steel plate shear walls (e.g. through corrugation), their strength and ductility can be increased. However, sometimes other reasons such as architectural conditions, executive issues or reduction of stiffness necessitate making openings. Due to their physical and geometrical nonlinear formation, the structural behavior of the corrugated steel shear walls (CSSWs) with openings is complicated. In this paper, an extensive study of the effects of a circular opening position on the performance of corrugated steel shear walls has been carried out by finite element method using the ABAQUS software. Parameters of modeling verified through comparison with experimental results. The response behavior factor (R) under monotonic loading and equivalent viscous damping ratio (ξeq) for the cyclic one were studied. The results showed that the presence of a circular opening in the corners of the corrugated steel shear walls leads to an increase in the response behavior factor of up to 7.2 in comparison to a wall without any openings, with the response behavior factor of 6.0. However, if the opening is in the middle of the walls, the response behavior factor will reach 6.2. Also the results showed that the equivalent viscous damping ratio varies between 0.183 and 0.199 via changing the position of the circular opening.

کلیدواژه ها:

corrugated steel shear wall ، opening ، physical and geometrical nonlinear ، method ، response behavior factor ، equivalent viscous damping ratio