Abstract
The wind loads could be increased by the complex hilly terrain. In order to consider this threat, computational simulations about wind pressures in buildings in hilly terrain and surrounding buildings were finished. In the CFD model, surrounding buildings within 500 meters and hilly terrain within 700 meters were established, and total 16 cases including different sensitive wind directions were simulated. The results showed that, because of the complex situation of surrounding hilly terrain and interfered buildings, wind loads in the building group under different direction show opposite characteristics. The speed-up effects by the hilly terrain increased the windward mean pressures when the flow comes from the north, while the interference effects by the surrounding buildings decreased them when the flow comes from the south.
Highlights
In hilly terrain, wind field near the ground can be changed dramatically by the hills, and be totally different from which in flat regions
The wind loads of a super tall building group in complex hilly terrain and surrounding interfered buildings were discussed by computational simulations in software Fluent
2 Characteristics of the building group and hilly terrain. This building group was located in a central business district, with some other super tall buildings surrounded
Summary
Wind field near the ground can be changed dramatically by the hills, and be totally different from which in flat regions. Sometimes it can be dangerous to the building safety because wind loads on buildings could be enlarged. The wind loads of a super tall building group in complex hilly terrain and surrounding interfered buildings were discussed by computational simulations in software Fluent. The wind pressures on the surfaces of buildings under 16 sensitive wind directions were discussed
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