Fluctuating wind field analysis based on random Fourier spectrum for wind induced response of high-rise structures

Li Lin, A.H.S. Ang, Dan-dan Xia, Hai-tao Hu, Huai-feng Wang and Fu-qiang He

Abstract

An accurate calculation of the stochastic wind field is the foundation for analyzing wind-induced structure response and reliability. In this research, the spatial correlation of structural wind field was considered based on the time domain method. A method for calculating the stochastic wind field based on cross stochastic Fourier spectrum was proposed. A flowchart of the proposed methodology is also presented in this study to represent the algorithm and workflow. Along with the analysis of regional wind speed distribution, the wind speed time history sample was calculated, and the efficiency can therefore be verified. Results show that the proposed method and programs could provide an efficient simulation for the wind-induced structure response analysis, and help determine the related parameters easily.

Key Words

stochastic wind field; cross stochastic Fourier spectrum; wind speed time history; time domain method; fluctuating wind field; structure wind induced respond

Address

Li Lin: School of Civil & Architecture Engineering, Xiamen University of Technology, 600 Ligong Road, Xiamen, China; College of Civil Engineering, Hunan University, 109 Shijiachong Road, Changsha, China; Department of Civil & Environmental Engineering, University of California, Irvine, 4136 Engineering Gateway, USA A.H.S. Ang: Department of Civil & Environmental Engineering, University of California, Irvine, 4136 Engineering Gateway, USA Dan-dan Xia, Hai-tao Hu, Huai-feng Wang: School of Civil & Architecture Engineering, Xiamen University of Technology, 600 Ligong Road, Xiamen, China Fu-qiang He: School of Civil & Architecture Engineering, Xiamen University of Technology, 600 Ligong Road, Xiamen, China; Fujian Provincial Key Laboratory of Fire Retardant Materials, 422 Siming Road, Xiamen, China

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