Numerical study on semi-supported steel composite shear wall at the edges under near and far-fault loading

Document Type : Article

Authors

1 I‌n‌s‌t‌i‌t‌u‌t‌i‌o‌n f‌o‌r H‌i‌g‌h‌e‌r E‌d‌u‌c‌a‌t‌i‌o‌n A‌C‌E‌C‌R K‌h‌o‌u‌z‌e‌s‌t‌a‌n

2 S‌c‌h‌o‌o‌l o‌f C‌i‌v‌i‌l E‌n‌g‌i‌n‌e‌e‌r‌i‌n‌g a‌n‌d A‌r‌c‌h‌i‌t‌e‌c‌t‌u‌r‌e M‌a‌l‌a‌y‌e‌r U‌n‌i‌v‌e‌r‌s‌i‌t‌y

Abstract

The shear wall is one of the most important systems to resist lateral loads in the building. In addition to controlling the lateral displacement of the structure and dealing with the lateral force, this system significantly increases the stiffness of the structure. The purpose of this article is to investigate the nonlinear behavior of semi-supported steel composite shear walls at the edges under monotonic and cyclic loading near- and far-fault. In this article, after verification, firstly, the semi-supported steel shear wall is modeled and analyzed using ETABS software to select the boundary members and the critical opening. Then, the base model of the semi-supported steel shear wall is converted to a semi-supported composite shear wall, and finally, it is modeled and checked using ABAQUS software. Among the investigated variables are reducing the thickness of the concrete coating on both sides of the steel plate of the wall, using concrete coating on one side of the steel plate of the wall, and increasing the thickness of the steel plate of the wall. The results showed that the addition of concrete to the SSSW model (converting the model to SSCSW) increases the initial in-plane hardness by 350%. Also, when concrete was added to the SSSW model, the ductility increased by 150% in two states near and far from the fault. Comparing the ultimate strength (peak of the cyclic diagram) also showed that regardless of the type of cyclic loading pattern, the calculated value for SSCSW is 28% higher than SSSW.

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