Abstract
To investigate the interference effects of building groups with flat roofs on snow load, a modified Eulerian-Eulerian model was proposed and verified by three typical cases. Based on the verified model, the impact of wind velocity on snow distribution on an isolated building with a flat roof was discussed first, and then a series of CFD simulations were carried out to investigate the snow distribution on building groups with the regular and staggered arrangement. The results showed that the amount of snow on the isolated building decreases significantly with the increase of wind velocity. The critical building density of the building group with the regular and staggered arrangement is about 0.25, above which the interference effects of the building groups on snow load are not significant. The interference effects of the building groups with the staggered arrangement on snow load are weaker than that of the building group with the regular arrangement.
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