外立面形式对高层建筑表面风压影响研究

br />Based on the SST&nbsp;<em>k-</em>&nbsp;turbulence model,the surface wind pressure of nine high-rise buildings,such as balconies,different concave and convex shapes and different grid types,is analyzed in detail.The wind pressure distribution characteristics of the building surface under different facade forms are clarified,and the mechanism of the facade form's influence on the surface wind pressure of the high-rise buildings is revealed in combination with the flow field information around the high-rise buildings.The results show that the maximum value of windward wind pressure coefficient increases and the maximum value of negative value of leeward wind pressure coefficient decreases with the addition of balcony on the facade.And balcony density has some influence to these.At the same time,the balcony will cause the flow to separate at the top of the balcony on the top floor of the building and form a local negative pressure on the top of the windward surface of the high-rise building.Compared with the smooth facade,the concave and convex facades will lead to an increase in the wind pressure difference between the windward surface and the leeward surface of the high-rise building.The phenomenon of pressure mutation will occur in the area near the top of the building,and a large negative value will appear at the corner of the wall.The addition of vertical grilles will also increase the pressure difference between the windward and leeward surfaces of high-rise buildings,while the lateral and rectangular grilles have a relatively small impact on structural wind loads.