As an important building maintenance structure,metal roofing has been widely used in various large buildings because of its unique advantages such as beautiful shape,light weight and high strength.This paper studies the wind resistance performance of large metal roofing under wind load based on wind tunnel test.The basic wind pressure is 0.95 kN/m2,which is once in 100 years.By building a wind tunnel test platform,the stress state of metal roofing under different wind speed and wind direction is simulated.The distribution of force characteristics,equivalent wind load and wind vibration coefficient were measured and analyzed.The standard value of wind load of the envelope structure is obtained,and the two common calculation methods are compared.Additionally,the metal roofing model of the conference center is established by ANSYS,and the wind vibration calculation is carried out.By analyzing the displacement time history and the equivalent wind load of typical joints,the overall wind load which can be used in this project design is obtained.
关键词
金属屋面/风洞试验/风振计算/有限元分析/抗风承载力
Key words
metal roofing/wind tunnel test/wind vibration calculation/finite element analysis/wind bearing capacity
维普
万方数据