WIND PRESSURE DISTRIBUTION AND WIND-INDUCED DYNAMIC RESPONSEFOR SPACE GROINED LATTICED VAULTS

摘要

The wind actions is one of the most important loads acting on long-span space groined latticed vaults (SGLV).rnHowever, it is rather difficult to get the relative wind pressure distribution on the surface of SGLV, because of therncomplicated structural shape. On the other hand, the longer the structural span, the greater the structuralrnwind-induced vibration response. The digital simulation technique is introduced to study the wind flow aroundrnSGLV, the relative wind pressure distribution and the wind-induced vibration response of SGLV. The influencernon the relative wind pressure distribution and the structural wind-induced vibration response for the open orrnclosed SGLV caused by such parameters as the numbers of cylindrical sectors, the structural curvature and thernratio of rise to span is studied. Further, the nodal displacement wind-induced vibration coefficients and thernwind-induced vibration coefficients corresponding to wind load are investigated. And the local average relativernwind pressures and the local average wind-induced vibration coefficients on different sub-areas are given.