| Under the general pattern of promoting economic development,in order to meet people's increasing needs for a better life,creating a comfortable outdoor activity space in the city is an indispensable requirement for creating a livable city.As an important part of urban outdoor activity space,green space is a landscape that maintains the service function of natural ecosystem in the city.It has the function of regulating the microclimate of the city,providing places for rest,entertainment,education and other services.The land resources in the city are very limited and precious The total amount of green space is limited and cannot be used without restriction.As the most attractive area for people flow,population density and mobility in the city,commercial districts often occupy the core position of urban land resources,and land is rare and expensive.The functions of outdoor recreation and viewing are gradually valued by people,and the content of commercial activities in outdoor spaces is more abundant than in the mall.With the increase in outdoor crowds,the comfort of the outdoor space environment becomes increasingly important.Therefore,it is very important to enhance the thermal environment of the outdoor space of the commercial area and improve the thermal comfort of the human body in the limited space in the process of creating a livable city.Therefore,in order to improve site utilization in limited spaces,the green space environment of the commercial area is improved by optimizing the green space pattern,the thermal comfort of the human body is improved,and the ecological functions of the green space are optimized.This study combines theoretical research and data measurement to analyze the thermal environment of different spaces in various typical business district squares,study the green space pattern patterns or related factors that affect thermal comfort,and intersperse with computer simulation verification to ensure the scientificity of the research and thus develop site optimization ideas And design.The main research content of this article is to select the typical commercial area square as the research object,conduct field monitoring and sort out an effective database,and then through comparative analysis,study the impact of different green space spatial patterns on the thermal environment,thermal comfort and PM2.5 concentration.Combined with analysis,it puts forward optimization suggestions and carries out optimization design,and finally simulates to verify its feasibility.The introduction in Chapter 1 of this article analyzes the background and significance of the research on green space landscape in commercial areas from the aspects of policy interpretation,documentation and conceptual understanding.By combing the relevant concepts and existing research results,the key issues of this study are: various types of commercial area squares What are the factors that affect the outdoor thermal environment? What is the influence mechanism of the spatial layout of different factors on the site thermal environment? How to optimize the design to improve the thermal comfort of the site and increase the utilization rate?The second chapter starts the investigation.Through the combination of data compilation and field research,the main business district squares in the six districts of the city are summarized and classified according to the function,scale,structure and layout of the business district squares,and the typical cases are selected as the main The research object selected six commercial districts as follows: Wudaokou Shopping Mall Plaza in Haidian District,Zhongguancun Shopping Mall Plaza in Haidian District,Wangjing Soho Commercial District Plaza in Chaoyang District,Blue Harbor Solana Commercial District Park,Qianmen Beijing Square Commercial District Outdoor Space and Shijingshan Wanda Plaza.The third chapter is the preparation for on-site investigation,mainly through the understanding and analysis of Beijing's geographical location,climatic conditions and PM2.5 concentration profile,combined with the previous research reserve,the selection of monitoring points,the timing of the investigation and the preparation of the follow-up research process Tools and methods.Record and sort out the on-site surveys in a timely manner,and centrally input all monitoring points into excel,calculate the average value of the data every five minutes,and use this as the monitoring result every five minutes,and analyze all the valid data after finishing.The fourth chapter mainly analyzes the monitoring result database.Through the analysis of the correlation between PM2.5 and thermal environment factors,the trend trends of daily average thermal environment factors in the three seasons of typical commercial areas in spring,summer and autumn,the analysis of the benefits of thermal environment impact and the analysis of the distribution of thermal comfort index PET Study related factors that affect the thermal environment and thermal comfort of outdoor spaces in commercial areas,and propose landscape patterns that are conducive to improving the outdoor thermal environment and thermal comfortAccording to data analysis and research results,Chapter 5 takes Shijingshan Wanda Plaza as an example,combined with the strategy proposed in Chapter 4,to carry out the optimal design of outdoor landscape pattern and verify the effect of the optimization on the outdoor thermal environment and thermal comfort.Finally,the sixth chapter summarizes and prospects this article. |
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