Investigation of the torsion effect of wind loads on high-rise buildings depending on surrounding structures

The aim of this thesis is to examine the effects of wind interactions created by the surrounding structures on torsion and the changes in torsion according to the wind incidence angle. In this thesis, a square section steel building with 100 m height and 20x20 m plan size is designed to serve as a reference. The wind direction is determined to be perpendicular to the facade of the reference building. In the second stage, a concrete prismatic solid model, and a steel building design, both of which have zero degrees according to the wind direction, were used. Concrete prismatic solid model building designs are included as barrier buildings. Concrete prismatic solid model building has been preferred because the analysis time is short, and the wind loads obtained as a result of the analyzes are the same as the steel building. In the third stage, the angle that gives the maximum torsion moment is determined by rotating the single steel building according to the wind direction. In the last stage, dual building combinations are used to find the angle with the highest torsional moment. While designing the building models, RFEM structural analysis program was used. The required wind load values were obtained from the RWIND digital wind tunnel simulation program, which works in harmony with the RFEM program. As a result of the analysis, torsional moment values were obtained and compared with each other. It has been determined that there are significant increases in torsional moment values obtained from other combinations compared to the reference design.