Research On Street Design Of Hexi Open Campus In Changsha Under The Concept Of Promoting Health

One of the core issues of built environment and public health is how the built environment affects human physical activity.This research area begins to focus on promoting health compared to traditional environmental hygiene.Hexi College Town in Changsha,as an early open campus in China,its streets have significant environmental problems caused by the contradiction between people and vehicles.The right of way has seriously affected people's travel modes and their willingness to take activities on the streets.Under the concept of promoting health,how the street-level built environment can affect people's physical activity has become the core issue to this research.Based on the characteristics of individual's physical activity on the street,this study begins with the basic relationship between the street-level built environment and the user's physical activity,analyzing the environmental factors and features of built environment related to physical activity,and builds the research framework for the evaluation of the street's environmental qualities and users' physical activity characteristics.Taking Hexi Open Campus in Changsha as an example,to explore the impact of environmental factors on physical activity,this thesis selects five typical campus streets,and uses the environmental data(measured objective data and users' perceived data)and physical activity data collected by the investigators' field observations and questionnaires.The following conclusions were concluded:1)There are measured evaluation data and users' perceived evaluation data about the built environment of the street,which have a good consistency to a certain extent.This shows that the measured evaluation data can better reflect the built environment features and qualities of the street.2)By analyzing the measured evaluation data and physical activity data of the street's built environment,the overall impact of the street built environment on the user's physical activity is obtained: the built environment can have a significant impact on the user's physical activity.There are differences between the degree of the influence of environmental variables on the physical activity's frequency and duration.To sum up,the overall impact of the built environment on the duration of physical activity is greater than the impact on the frequency of physical activity.3)Assessment of the environmental factors affecting people's physical activity on the street: the imageability,transparency,complexity of the street design quality and walking suitability index have an impact on the duration of physical activity on the street;The human scale and the bicycle suitability index have an impact on the frequency of physical activity on the street.4)Optimized strategy for built-up environmental factors related to physical activity: According to the existing basic characteristics of different streets,combined with above discovered influence mechanism,three levels of optimization strategies about the street's built environment including control strategy,improvement strategy,and design strategy are proposed.Finally,this study believes that the concept of people-oriented street design including “complete street”,“equality of road rights” and “shared street” would have a positive effect on resolving the street's environmental problems caused by the contradiction between cars and people.