Influence of the construction stages analysis on the distribution of displacement and forces in columns of reinforced columns tall buildings

Abstract

The increasing construction of tall buildings in the world, as well as in Bulgaria, defines the desire for a more precise study of this type of structures. To satisfying this necessity, the possibility of carrying out nonlinear analysis of structures is included in many software packages. The question of the proper definition of material characteristics and the application of computational software in the design of structures with consideration of the stages of construction remains open. In addition to purely research, the problem has also a practical application related to the increasing number of tall buildings at different stages of design and construction. The issue of more accurate modeling of the behavior of tall buildings is discussed, with a focus on the distribution of forces and displacements in columns. A computational model of a tall building is considered. The distribution of forces and displacements in a computational model that accounts for the stages of construction is compared to one in which such consideration is not included. A comparison of the forces and displacements in representative sections of the columns in the two modeling options is presented as a result. Finally, general conclusions and recommendations for the research and design of tall buildings with reinforced concrete structure are given.