The Spatial Form Optimization Research Of Shenyang Civil Square Based On The Comfort Level Of Wind Environment

Shenyang belongs to the cold region, in addition to the extreme cold, windy weather conditions is also an important factor to the outdoor space environment. In addition, with the fast urbanization process at present stage in China, the urban high density space increases rapidly and the number of high-rise buildings grows fast.The problem of the urban wind environment is more and more serious.The contradiction between the worsen development trend of the urban environment and demand of public healthy and comfortable outdoor activities become prominent.Shenyang city square as an important space of outdoor activities, studying how to create a good wind environment for the square has vital significance.First of all, analysis impact factors of the square wind environment from three aspects.State the characteristics of shenyang climate and urban wind environment, combined with the climate partition to analyze the potential requirement of shenyang square wind environment design.Secondly,analysis the influence of square around and its constituent elements to wind environment;Then, through sum up the selected 20 typical shenyang city square prototype,use the Fluent software to simulate analysis from the Angle of different Spatial forms of square and explore the relationship between different square spatial form and the wind environment,providing the basis of design strategy to create a good wind environment for the next step.Then, on the basis of summing up the evaluation standard of the wind environment at domestic and abroad, the wind environment evaluation system of shenyang square are summarized up.Through the simulation analysis of 5 types of 20 shenyang civil square,together with analyzing and comparing the present situation of square design and the status use,sum up the current problems of shenyang civil square wind environment.Choose a square from five classes each, to make comparison withe the software simulation and wind speed field measurement,determining the results of simulation can react the wind speed difference of each point in the square within a certain range precisionFinally,on the basis of the simulation analysis and site investigation,this thesis puts forward the general rule to realize the wind speed value of different kinds of active area relatively reasonable,at the same time,avoid the "adverse wind" and ventilation "blind spots" due to external factors.Besides, this thesis put forward three strategy to cope with cold winter wind,including the barrier、lead and weak of the wind.Also put forward natural ventilation strategies to cope with the summer, and make further analysis of each specific measures for every strategies.