| In recent years, China’s coastal areas of extreme wind climate(such as the typhoon) prone, resulting in a large number of villages and towns residential building damage.However, wind disaster investigations show that low rise buildings damaged basic for the destruction of the roof structure, especially by the destruction of the windward roof edges and corners and the roof of the local area, which eventually led to the failure of the whole roof.The change of the shape of the roof is greatly influenced by the wind load characteristics of the roof.In fact, it is not easy to find the change law of the shape coefficient of the other body from the norm.(1)Respectively from the atmospheric boundary layer theory, the numerical calculation of the basic control equations and the turbulence model introduces the computing in the field of fluid mechanics and structural wind numerical simulation related basic knowledge, its purpose is theoretical foundation for understanding of wind engineering.(2)Through the Fluent software, based on the RNG Reynolds model, the numerical simulation results of the L type, T shape, concave low double slope house, through the wind tunnel test to verify.And the simulation results were compared with the "structures load code" which results in order to prove the reliability of numerical simulation analysis method of low surface pressure.(3)Shaped low rise gable housing for the several, in different slope angle, under different wind angles are analyzed, and their average wind pressure of roof size distribution were compared, analysis of pressure variation of different size, with probability method to compare the different type roof pressure distribution, finally are given in the wind resistant design of building shape coefficient advice value and guide the engineering design.(4)Finally. The research work of this thesis is summarized, summed up the main research conclusion, and put forward the further research work and existing problems in the thesis. |
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