The Measurement And Influence Mechanism Of City Street Vitality

In recent years,with the continuous progress of China’s urbanization process and the continuous impact of new and new methods of science and technology,great changes have taken place in people’s living methods,which is embodied in the enhancement of people’s yearning for a better life,which is reflected in the planning concept of humanism.However,in the former wave of urban expansion,street space has become a forgotten public space.Rapid urban construction has caused the lack of characteristics and quality of the streets,which eventually leads to the lack of vitality in the streets.With the enhancement of the concept of humanism,the street space,as a living container,has been paid more and more attention.The theoretical and practical research on the vitality of street and street has been carried out in the academia and the industry.How to "people-oriented" street vitality molding has become a major issue which is to meet the people’s desire for a better life.At the same time,the analysis of big data also provides effective means to solve the problem.Under this background,this paper takes the street vitality as the research object,selects the Nanjing main city and the old city as the case,measure the street vitality of Nanjing from two perspectives of theoretical research and empirical analysis,and study its influence mechanism.In the theoretical research,this paper first combed and summarized the relevant research and theory of street vitality,clarified the research perspective of the street vitality,determined the definition of street vitality,the external vitality characterization,the connotation of inner vitality,and established the model of street vitality evaluation.In the empirical study,this paper uses the urban spatial data,the mobile signaling big data,the POI big data to establish the street vitality research basic database,and based on this database,the street vitality measure and mechanism discussion are carried out.The measure of street vitality is used to measure the two dimensions of the time and space of Nanjing street vitality with cell phone signaling and spatial data.The time dimension measure focuses on the research of the law of human activity.The spatial dimension measure focuses on the research of the spatial distribution of people,and puts forward the street function,the residential neighborhood street vitality area model,the commercial business business.Class Street vitality zone model.The study of street vitality mechanism is based on the measurement of street vitality.Through the study of the correlation between external vitality and internal structure of street vitality,it selects the factors which have great influence on the vitality of the street,and further discusses the theory and model proposed in the previous article.The research holds that human behavior and feeling are the key factors of the affect Street vitality,which are reflected in street vitality representation and street vitality material composition,street vitality representation originates from the street behavior of human and space-time dual dimension,and the vitality of street is inherent in three aspects of perception,capacity and attraction of street to people.Among them,on the time level,there are 5 stages of "low night tide stable section,early morning rush section,daytime climax concussion section,evening rush segment,and nighttime drop section",and the activity of people in the street presents inhomogeneity in different time periods in the whole space level,which is from the function of the street and the function of street city.The difference is embodied in the index of the development degree of the street and the index of street accessibility,and the activity of people in the street is mainly concentrated in the street vitality area and the residential street vitality area in the street,which is caused by the function of the neighborhood and the function of the street city.And there are four stages in the street vitality area of commercial business category: "single vitality region formation,single vitality regional expansion,multi vitality region joint and multi vitality region formation",and the residential street vitality area is composed of two parts: "basic vitality + extended vitality area".Specifically,the full text structure is as follows:——The first chapter is an introduction,explaining the research background,research objectives and significance,confirming the research contents and research methods,and combing the research framework.——The second chapter is the theoretical research part.It dialectically studies the theoretical research and empirical research on street vitality,defines the vitality of the street based on human behavior feeling,and explains its connotation,which is concretely represented by the inner composition of the external vigor of street vitality and the vitality of the street.——In the third chapter,based on the second chapter theory,we construct the research model of street vitality measurement and mechanism,and define the research scope,research data and research methods.——The fourth chapter is the measure of street vitality,including the measurement of street vitality time dimension based on Nanjing main city data,the measure of street vitality space based on Nanjing old city data,and the construction of related model.——The fifth chapter is the study of the street vitality mechanism.On the basis of the fourth chapter,it analyzes the street vitality and the inner structure of street vitality,excavates the key factors that affect the street vitality,and reinterprets the previous model.——The finally chapter is the main conclusions,innovations and shortcomings.In general,this paper attempts to use the large data of cell phone signaling,large spatial data and POI data,to establish the quantitative evaluation model of street vitality from the human behavior and feelings,and to excavate the key factors that affect the vitality of the street,and have a certain positive effect on the research part of Street vitality in the urban planning.