DYNAMIC EFFECTS OF CENTRAL X STEEL BRACES AT THE SPECIFIED NODE POINT IN THE STEEL STRUCTURE MODEL

Abstract

This study aims to examine the effects of strengthening steel structures with steel cross elements on the dynamic behavior of the structure, and if we expand the subject, it addresses the behavior of steel structures under dynamic effects and the behavior of steel structures after strengthening with steel crosses. The concept of rigidity is particularly emphasized. While conducting this research, data were obtained and interpreted by using the SAP2000 package program with the comparison method. For comparison, the frame system model with moment transfer and the new model strengthened with X-type central steel crosses of this model were used. The materials were assumed to be linear elastic and time domain calculation methods were used. In both different models, the node number 24, which is in the most adverse situation, i.e. has the maximum displacement and acceleration, was taken as basis. The dynamic behaviors of the structure were compared by applying the acceleration values of the El centro earthquake in the U1 direction to the systems. As a result of these examinations, it was observed that the strengthening of steel structures with steel crosses increased the rigidity of the structure