Study On The Surface Wind Pressure Characteristics Of The Staggered Layout Lightweight Gable Roof Buildings

Lightweight and movable gable roof building is widely used in military and civilian fields, but the quality is light, as the wind load is control load. Specification and research at home and abroad for monomer is more detail,it is more mature about the research, and the house when is used actual often appear groups to decorate, the research of group is lagging behind the practical application. Therefore, in order to make use of the blocking effect and avoid amplification effect, there is necessary to study the layout of group houses under the effect of wind-induced interference, so as to achieve the goal of safe use.In this paper, based on the atmospheric boundary layer theory and the basic principle of fluid dynamics, with the aid of finite element analysis software, according to the data of TTU wind tunnel test, to study and discuss the key techniques and parameters, such as calculation domain, the grid number and turbulence model, to establish numerical wind tunnel for the group houses. Based On this, by selecting the target houses as analysis object, considering the transverse density coefficient, longitudinal density coefficient and wind direction angle as parameters for lightweight gable roof group buildings under 60 kinds of working conditions of numerical simulation, in order to studying the distribution of wind pressure on the surface of group houses,by which get the distribution of wind pressure on the surface of houses under the effect of wind-induced interference. Then, getting the critical distance and shape coefficient of the engineering design under the staggered layout. At the same time, to obtain the reasonable layout, while calculating the wind speed of the monitoring among the houses,to evaluate the outdoor wind environment under the staggered arrangement by using the wind speed ratio. The results indicate that the wind load shape coefficient of target houses among group house and the theoretical basis of wind-resistant about this house, which is base on the research of the distribution of wind pressure on the surface of light gable houses under the staggered layout.