Farther,an actual building destroyed by typhoon was investigated employing the material and geometrical nonlin-earity method and the failure principium of cantilever space truss under typhoon was studied.

Based on these, the theory studies and design of the wind vibration control for a large cantilevered steel spatial truss with circular tube viscoelastic dampers of the roof engineering at Hefei Olympic Center is finished and this building engineering has been set up and got a good social benefit and economic benefit.

According to complicated structure shape and difficult construction,multi-layers steel tube cantilever frame is adopted,its key technology and experience are introduced accordingly.