Analysis of multi-storey steel structures with different bracing types

When examined from the past to the present, it is seen that the buildings show significant developments in the field of architecture and engineering. The variety of materials used in the emergence of the structures has been constantly changed in order to provide advantages. Each building material has its own advantages and disadvantages. For concrete, it is more rigid than steel and wooden structures. However, it is heavier than steel and wooden structures and creates negativities especially in case of earthquakes. Concrete material is more advantageous than steel in terms of cost and fire resistance. Although the construction time of the steel material is shorter, it is possible to reuse the steel materials. It is possible to list more advantages and disadvantages such as these. However, these advantages and disadvantages are changing day by day and different building materials are preferred. Today, steel has started to be used frequently as a building material. The cost of using concrete as a building material in buildings does not change much compared to steel as it used to be. Various materials have been developed to provide fire resistance. While steel was used as a building material in structures such as bridges, it is now frequently used in buildings. As the effects of earthquakes increase in our country and in the world, it becomes obligatory to use steel as a building material in buildings. Thanks to the lightness of steel structures, it is possible to construct higher buildings more safely and to make them longer in terms of life. In this thesis, in our first chapter, the process of introducing steel to life as a building material, its advantages and disadvantages, and the behavior of steel structures against earthquakes are mentioned. In the second part, studies on high-rise steel structures from past to present are mentioned. In our third chapter, high steel structures, the process of their emergence, especially the features of high steel structures to be made different from normal steel structures, the steel structures regulations used in Turkey and in the world are mentioned. In the fourth part, the structures that will be formed by modeling five different high steel structures with the SAP2000 program were analyzed by mode addition method and comparisons were made in terms of base shear forces, displacements and structure weights. In our last section, there are conclusions and recommendations.