Study On The Design Of Commercial Syntheses Roof Public Space Under The Background Of High Density

In the 30 years since the reform and opening up,China's urbanization level has increased rapidly,but a series of urban phenomena have followed: tight urban construction land,high-density building,urban space is separated by rapid motor vehicle traffic,and the limited public space is constantly squeezed into an “island of cities”.In the past five years,China has also entered a period of “reflection” from the urbanization of “sturm and drang”,and the awareness of the public has gradually awakened.People have begun to pay more attention to the construction of the public space,the quality of urban life and so on.At the same time,the commercial syntheses are gradually transforming to the direction that the function is more complex and the space is more extrude and publicized,under the background of urban expanding,and the boundaries between architecture and urban space are becoming more and more vague and polysemy.At present,the research on the roof space of the commercial syntheses are mostly concentrated on the type of the semiopen roof space.Under the trend of the urbanization of the commercial syntheses,there have been many practical cases of the integration of roof space and urban functions.However,in theory,there is a lack of systematic combing,so it is very necessary and urgent to research such a roof space with “complete openness”.Therefore,this paper takes the roof public space of the commercial syntheses as the research object,and discusses it in two aspects: First,based on the analysis of the existing data of many cases,we subjectively summarize the main design points of the roof public space;second,we select three typical types of roof public spaces from them,note the condition of space usage,and give out the satisfaction assessment questionnaires.From the perspective of data analysis,we objectively explore the design emphasis that affect the usage in different types of roof public spaces,Finally,based on the combination of subjective and objective research,we propose the the design strategy of the roof public space of the commercial syntheses under high density background.The specific research content is divided into the following four parts:The first part is about the related pilot research.In this part,we tidy the development history and trend of the commercial syntheses and the roof space,and the development status of the roof space of the commercial syntheses under the high-density development trend,we also analyze the research level of the roof public space of the commercial syntheses,and establish the grounded cognition of the research object.The second part is the comprehensive analysis of the roof public space of the commercial syntheses.This part takes the seven aspects of overall planning,traffic flow,functional organization,spatial structure,landscape environment,supporting facilities and disaster prevention design as the starting point,and systematically analyzes the various factors affecting the design of roof public space of the commercial syntheses.The third part is the after-use evaluation research of roof public space of the commercial syntheses.This part conducts an activity annotation survey on the usage condition of the three selected typical sample spaces,and analyzes the type of the activity and the number of people?the time distribution of the activity,the space distribution of the activity,etc.;and also conducts user satisfaction evaluation research to convert the design points into the evaluation index in order to explore the identity and difference of the evaluation attitudes of users under different types of roof public spaces,which is as the argument and deepening of the preceding part of the text.The fourth part is the research on the design strategy of roof public space of the commercial syntheses.Based on the previous analysis and argument,this part proposes the design strategies and methods of the specific issues from five aspects: the implementation?the management subject and the method of public space,the design of the spatial accessibility,the refined design of the supporting facilities,the composite design of space,and the integrated design of landscape environment.