The nonuniform distribution of snow around structures with holes is extremely unfavorable for structural safety, and the\nmechanism of wind-snow interaction between adjacent structures with holes needs to be explored. Therefore, a wind tunnel\nsimulation was performed, in which quartz particles with an average particle size of 0.14mm as snow particles were used, and\ncubes with dimensions of 100mmÃ? 100mmÃ? 100mm each containing a hole with the size of 20mmÃ? 20mm were employed as\nstructures. Firstly, the quality of a small low-speed wind tunnel flow field was tested, and then the effects of hole orientation (hole\nlocated on the windward side, leeward side, and other vertical sides) and absence of holes on the surface of a single cube were\nstudied. Furthermore, the effects of different hole locations (respectant position, opposite position, and dislocation) and relative\nspacing (50 mm, 100 mm, and 150 mm) on the surfaces of two cubes and the snow distribution around them were investigated. It\nwas concluded that the presence and location of hole had a great influence on snow distribution around cubes. Snow distribution\nwas favorable when hole was located on the other vertical sides of the test specimen. The most unfavorable snow distribution was\nobtained when the holes on the two-holed sides of the cubes were respectant with a maximum snow depth coefficient of 1.4. A\nsignificant difference was observed in the snow depths of two sides of cubes when holes were dislocated. When two holes were\nrespectant, surrounding snow depth was decreased, and the maximum snow depth on model surface area was increased with the\nincrease of spacing. Wind tunnel tests on holed cubes provided a reference for the prediction of snow load distribution of typical\nstructures with holes.
Loading....