Studay On The Guidance And Control Of The Overall Urban Design Of Changchun Based On Wind Environment Analysis

China is in the stage of rapid development.The rapid urbanization makes the urban wind and heat environment worse,the pressure in the urban center is increasing,and the wind and heat environment problems such as heat island effect are aggravated.Shallow mountain areas as an important area to relieve the pressure of the city has been gradually paid attention to by the a Auto CADemia and the industry.The wind and heat environment of the cold region city is very typical.Due to the unique geographical location and other factors,the problems existing in the shallow mountainous area of the cold region city and the central area of the cold region city are completely different,which seriously affects the travel and health of the residents.At the present stage,domestic and foreign studies on urban climate have begun to achieve results,but most of them remain at the theoretical level,unable to connect with the level of urban spatial form construction,let alone to guide the construction of spatial form in shallow mountainous areas in cold regions.In order to optimize the wind and heat environment in the shallow mountainous area of the city in the cold region,it is necessary to improve and control the spatial form construction to improve the climate environment in the shallow mountainous area of the city in the cold region from the overall perspective.Since the construction of the spatial form in the shallow mountainous area in the cold region is also to control the spatial form pattern of the city,it can be a way to implement the wind and thermal environment assessment.This paper takes the shallow mountainous area of Changchun City as an example to carry out in-depth excavation and research.First of all,through the analysis and interpretation of typical cases,the wind and heat environment evaluation and wind and heat environment problems in the shallow mountainous area of Changchun City are carried out to identify the relationship between the impact of the urban wind and heat environment and the urban space form,and the existing problems with the shallow mountainous area space form of cold cities.The wind and heat environment evaluation system in the cold and shallow mountainous area was constructed according to the conditions of each element and problem.The simulation evaluation of each factor was carried out to determine the best reasonable layout mode.This paper summarizes and classifies the typical spatial patterns in shallow mountainous areas of Changchun.CFD technology was used to simulate,analyze and compare the wind and heat environment in different spatial modes in the shallow mountainous area of Changchun City.Thus,the optimal spatial form of the shallow mountain area in Changchun under different environments is obtained.Finally,this paper will put forward the improvement strategy of wind and heat environment in the shallow mountainous area of the cold city,and connect it with the key plot of Changchun Lianhua Mountain eco-tourism resort.Revise and evaluate the existing scheme of the project to support the conclusion of the paper.It provides scientific and accurate spatial form construction of shallow mountainous areas in the cold region and provides control guidance for the key areas according to their functions.To improve the scientific nature of urban planning and design in shallow mountainous areas of cold cities,and to provide theoretical support for building sustainable and livable cities.