Influence of Aerodynamic Interference on High-rise Buildings with Square Sections on Its Galloping Stability

Abstract:

Based on high-frequency balance force wind tunnel tests, the base bending moments of a square-section super high-rise building with an adjacent building at 36 different locations were measured in 4 simulated turbulent wind fields, the galloping force coefficient is obtained by analysis, and the influence of wind field characteristics and interference effects on it is discussed. The test results show that the galloping of the square-section super high-rise buildings without interference building can only occur when the angle between the wind direction and the building body axis is less than 16°. And in the wind field with turbulence, the possibility of galloping near the 0° wind direction angle is the largest. When the interference building is directly in front of the upstream, the probability of galloping near the 0° wind direction angle is significantly reduced. In turbulent wind fields, the galloping instability near the 0° wind direction angle is increased only when interference building in few partial positions.