Evaluation of the Coefficient of behavior of Steel Structures with EBF Bracing by Changing the Range of Link Beam Considering the Effect of Soil-Structure Interaction

Behavior coefficient is one of the important parameters in calculating the loads affecting the structure in structural analysis. In this research, different aspects of behavior coefficient have been identified and have been raised as the main issue of the present study. Eccentric Bracing Frames (EBF) braces are also used as a useful tool in steel structures. One of the important issues in steel structures with EBF braces is the problem of link beams. The main purpose of this study is to investigate the coefficient of behavior of steel frames with link beams and different heights by considering the effect of soil-structure interaction, which were studied based on increasing nonlinear static analysis in four, eight and twelve floor structures. The variable of link beam length along with the effect of soil-structure interaction has been evaluated. In the study of the effect of soil-structure interaction on the cover curve, it was observed that considering the effect of soil-structure interaction, the displacement in the pushover curve increases but the base shear force decreases. It is also observed that the values of behavior coefficients decrease in the presence of the effect of soil-structure interaction, which can be due to the decrease in base shear values and increase in displacement values. The general trend of determined graphs has been to increase the values of the coefficient of behavior due to the increase in the length of the link beam. Also, the values of behavior coefficients have been reduced by considering the effect of soil-structure interaction.