Study On The Wind Induced Response In Along Wind Of The High-rise Building

Wind load is one of the most important load of the building structure. It is very important to resist wind load for building structures. High-rise buildings have lower frequencies, which are closed to the predominant frequency of wind load. And sometimes wind loads have become control load for these two kinds of structures. It is necessary to do deep studies of wind engineering.With the development of high-rise buildings, wind-induced response of the buildings becomes a dominant factor for their structural design. Thus it is very important to understand and establish a precise calculation method to evaluate wind loads on tall buildings.In the early 1960s, the work of Davenport had made great progress of wind engineering. The wind load is evaluated as mean and fluctuating components. The fluctuating wind can be seen as a stationary gauss random process and its power spectral density was developed.Firstly, this thesis studies the wind induced response in along wind of the high-rise building, then it introduces simulation method of the fluctuating wind load~M.Shinozuka method. The sample's statistical characteristics of impulsive wind load can well accord with the theoretical value by M. Shinozuka method, Relating to the deduction of wind pressure uniform spectrum and calculation of wind load spectrum, analytical progress of M. Shinozuka method is systemically discussed. The program can be realized by MATLAB conveniently and effectively, in which Cholesky decomposition and random numbers can be easily acquired. Then, an example about high-rise building is given. We can acquire the wind induced responses of the high-rise building, and make sure the wind induced response and if it can need the requirement of the people.