Nonlinear Analysis of Local Corrugated Steel Shear Wall under Lateral Loading
Received Date: August 12, 2020; Published Date: September 03, 2020
Steel shear wall is one of the types of resistant shear walls against lateral loads of the structure which is considered due to many reasons such as reducing the weight of the steel in the structure and increased speed of construction etc. In order to prevent out-of-plan buckling of steel plate, stiffeners are applied horizontally, vertically or diagonally. A new method used in the recent years is the use of a corrugated plate in various shapes, such as a sine, a trapezoid, a triangular, etc., in the construction of a steel shear wall. The aim of this research is to replace the local corrugated (press) plate with corrugated steel plates. After investigating the force-displacement diagrams in monotonic and cyclic loading, it was obtained that the local vertical trapezoidal presses had better resistance and ductility compared to the local cylindric presses for replacing corrugated and steel shear wall. The results of this research showed that the resistance of the local shear steel wall has a direct relation with the thickness of the plate and a reverse relation with the out of plan dimension of trapezoidal corrugate. Though, in all the tests of the local corrugated steel sheer walls, there is an approximate range in which beyond that range, the above results are not valid. As an example, a thickness increases of up to 9mm from the plate is effective, since in higher thicknesses, simple steel sheer wall exhibits adequate buckling resistance. It was found that in high thicknesses with increasing the trapezoidal corrugate section, the behavior of the steel shear wall improves, while such behavior is not displayed in lower thicknesses. The results of this research can be applied for designing without stiffeners, reducing welding area and increasing ductility in steel structures.
Keywords: Steel shear wall; Resistance; Buckling; Local corrugated plate; Ductility; Trapezoidal press; Cylindrical press