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Abstract A developed numerical simulation technique for buffeting longitudinal wind forces on rectangular buildings is presented in this research. This technique mainly aims to generate time histories with prescribed probabilistic characteristics for the longitudinal wind load turbulent component which is considered as a zero mean stationary multivariate one-dimensional stochastic process, then the instantaneous wind load time histories are obtained by adding each mean wind load component to the corresponding generated time history of the turbulent component. A simplified procedure, which takes the advantage of aerodynamic admittance function, is proposed to estimate the longitudinal wind load on buildings in the frequency domain. A very efficient simulation algorithm based on spectral representation method which depends on superposition of trigonometric functions with random phase angles is used to perform the transformation from the frequency domain to the time domain. A MATLAB function is coded to implement the proposed simulation technique. By testing the proposed technique statistically, it has been noted that there are good agreements between the temporal and target auto/cross-correlation functions of the simulated wind forces. A parametric study was chosen to investigate the efficiency of the proposed simulation technique shows that the generated time histories of instantaneous wind forces manage to give a reasonable dynamic response for five buildings with different heights. |