STUDY ON WIND TUNNEL TEST OF WIND LOADS OF DRY COAL SHEDS

It has been finished wind tunnel test based on the latticed shell according to the engineering design and experimental study's need.By taking account of the impacts of wind direction,coal piles and the elevation-angle on the shape coefficient of the dry coal shed,extrema of shape coefficient obtained.By data analysis,the surface of the latticed shell has been divided into seven areas that is named the first division method and twenty-one areas that is named the second division method according to the shape of the latticed shell and different loads.Shape coefficients of the sections of the latticed shell are given.Shape coefficient of lateral end is too large,it is proposed that rib should be added on both ends or the section size should be increased;and attention is also paid to strengthening the connection of the roof and dry coal shed to adapt to different changes in wind direction.The test may supply the design reference for dry coal shed expanding or similar projects.