Study On Wind Pressure Coefficients For Pre-homogenization Storage In Cement Mill

Due to rapid development of spatial structures and increasing of wind disaster, structural wind engineering for large span spatial structures arouses more attention recently. One of the main purposes of structural wind engineering is to determine the wind pressure coefficients for structures.In this paper, the numerical wind tunnel method (NWTM), based on the Computational Fluid Dynamics, is applied to wind load analysis. The wind pressure coefficients of spherical shell roof were first determined by NWTM and the results agreed well with those of wind tunnel test and codes of different countries. The feasibility and reliability of numerical wind tunnel method were verified.Then, numerical wind tunnel analysis is carried out to determine wind pressure on spherical shell roofs (span = 66m, 86m and 96m). The distribution of wind pressure on the spherical shell roofs was investigated and the wind pressure coefficients were given by regions for structure design. The effect of side walls on wind pressure coefficients was studied. It was shown that the wind pressure coefficients are nearly irrelevant with the span of the spherical shell roofs and the existence of the side walls.Finnally, numerical wind tunnel analysis is carried out to determine wind pressure on cylindrical shell roofs (span = 49m and 60m). The distribution of wind pressure on cylindrical shell roofs was investigated and the wind pressure coefficients were given by regions for structure design. The effect of end walls on wind pressure coefficients was studied. It was shown that the wind pressure coefficients are nearly irrelevant with the span of the cylindrical shell roofs and the end walls has large effect on the wind pressure coefficients of the end regions.