Equivalent Static Wind Load Analysis Of High-rise Buildings

With the application of new building materials, modern buildings tend to be high, light, thin and soft, and wind load is becoming a major factor of structural design, and more and more attention is payed to equivalent static wind load research. Along-wind load research conducted earlier has formed a more mature theoretical analysis system. The formation mechanism of across-wind and torsional wind is complex and equivalent static wind load theories are not perfect. So, this article makes a further study on the equivalent static wind load analysis theory and the impact of aerodynamic damping and structural damping on across-wind and torsional equivalent static wind load and response analysis of high-rise buildings, the specific work is as follow:(1) This article discusses the methods of high-rise building wind-resistant design and investigates cons of various methods. Three-component method is an accurate way on the along-wind equivalent static wind load analysis, and also can be used in across-wind and torsional equivalent static wind load.(2) Based on random vibration theory, this article derived the whole process of along-wind across-wind and torsional equivalent static wind load analysis high-rise building. Through specific examples analysis, this article discusses the impact of the mode coefficient, the aerodynamic damping and the structural damping on the acceleration response and equivalent static wind loads, and compares with AIJ (1996) method on across-wind calculation.(3) This article makes a systematic analysis on the equivalent static wind load and response analysis of Shenzhen Kingkey Finance Tower. This article firstly introduces the project overview and the wind tunnel test, by FORTRAN program, then analyzes wind induced response and equivalent static wind load characteristics as well as the effect of aerodynamic damping and structural damping on the acceleration response and equivalent static wind loads.