Simulation Analysis on Wind-induced Vibration of Longspan Grid Roof StructuresWEI Jun,XU Ming-ming,ZHANG Hua(School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China)Based on wind field simulation and structures stochastic vibration,MATLAB and the second development of ANSYS were combined to analyze wind-induced vibration response of the gymnasium's long-span grid roof.The results show that the method can get the reflection about wind-induced vibration response of the gymnasium's roof correctly.wind field simulation;stochastic vibration; couple;time-history analysis