| The long-span spatial net structure is widely applied in practice engineering., relative to the cable-membrane structure, wind-induced response analysis of this structure is not in percipient.The Ningbo International Conference and Exhibition Center is adopted as an example. wind induced vibration response of the structure is Checked by the computer simulation. The main work is the following parts:1. This paper is based on a practical project. The model of spatial net structure is set up by a series of command in ANSYS. Nodes of the structure associated with wind speed time series are consider, Auto-Regressive (AR) model is employed to simulate node randomly fluctuating wind speed time series. By using programs written by myself, Auto-Regressive (AR) and the inverse Fast Fourier Transform (IFFT) are done. Statistical analysis results of numerical wind speed time series show that the method is efficient in simulating nodal wind speed time series which has time and space correlativity. The power spectrum of wind speed time series sample is coincident with the aim power spectrum curve. Influences of the time interval and autoregressive coefficient on the wind load simulation are discussed.2. The vibration modes of the structure is analyzed by using Finite-element program ANSYS. Calculated wind induced vibration response . The influences of the wind speed, the vertical wind, the height of the net on the wind-induced vibration response of the structure are discussed.3. According to an example of specification design method of the present results indicate that the network structure of space does not apply for space grid structure. Displacement and internal force of the wind vibration coefficient of the structure is different, and discusses the influence of the structural parameters on the displacement and internal force of the wind the wind vibration coefficient, the results and conclusions can provide a reference for engineers.
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