Wind Pressure And Equivalent Static Wind Load Numerical Simulation Analysis On The Typical Form Of Large-Span Roof

Public buildings' shape become more complex,and become bigger with the rapid development of our country.The function and appearance of the buildings get more attention especially when buildings are stadium,transport hub or exhibition center.People build them with high requirement on architectural modeling and using space.It's sensitive for these buildings about wind,and the structure always damage mainly because of wind.Wind loads sometimes become their control loads.This paper mainly focuses on the subject of the actual project,building 3D structure models of the typical architecture form.SST k-? turbulence model is used to simulate the flow around the wind field of the structure by FLUENT software which is based on Reynolds stress average method.Wind-loading shape coefficient and wind-pressure coefficient are calculated of the straw hat type structure in different wind angles.The wind pressure distribution of different depth-span ratio is given for design purpose.By a concrete analysis of Changzhou city cultural arts center's wind pressure distribution,wind-induced vertical forces of the structural system are given.Wind engineering researchers have proposed the concept of equivalent static wind loads(ESWL)in order to facilitate designers to master design methodology of wind loads.Building the finite element structure model by ANSYS software,add the wind load,calculated before,to the structure,analyzed wind-induced dynamic response.On the basis of the equivalent target for structure's specific response,multi-target ESWL is improved by introducing quality participation coefficients.A stadium's ESWL is given as an example.This paper also studies opening hole of super highrise building,given the effects of open hole ratio,open hole height and open hole shape,as well as design advise for open hole super highrise building.