Derivation of Non_Dimesional Acrosswind Force Spectrum for wind Interference Effect Using One of the Civil Engineering Softwares

Given that in designing high building, wind subject is one of the most effective issues and also according to important phenomena such as aero elastic must be considered in designing high buildings, thus this type of buildings are experimented in wind tunnel that enough time and cost are necessary. Thus, in recent years, is used an analyzing software method for review the structure behavior. Most wind codes for single buildings, in reality, charge of wind on cumulated high buildings with other buildings compared with a building that is placed as a single state can be different. The proximity of high building with each other can cause the increasing or decreasing charge of wind in output surface of buildings. In this research, at first, maximum reaction of building extracted in three various speed, then, maximum reaction of this building in cumulated with other buildings in two different dimensional states considered as once with big plan and once with small plan and in various distances as coefficient of main building plan dimension. Buildings and wind tunnel modulated in ANSYS software as three-dimensional. The used method is the transient dynamic analysis. The result showed that critical state for cumulated buildings in upstream in lb and 3b and in all considered states, intermixture effects removed in 6b distance.