Chengdu Old Community Based On Earthquake Disaster Avoidance Behavior Research On Optimization Of Disaster Avoidance Space

With the impact of the epidemic,the safety problem of the city has been gradually amplified.At the same time,in the face of the important urban activity of urban renewal,the safety environment of a large number of old communities built in the central area of the city from the 1950 s to the end of the last century is more urgent than that of new communities.At present,domestic research on disaster avoidance mostly focuses on the overall spatial level of the city,and mostly provides overall disaster avoidance strategies and spatial disaster avoidance planning for the large-scale spatial field.However,people mostly live in the small-scale spatial field such as neighborhood streets and residential areas.As the cell and basic unit of the city,this small-scale space actually needs specific disaster avoidance strategies,which can not be achieved by urban disaster avoidance planning.Moreover,the spatial environment of the existing old community has begun to show a "sick" state with the accumulation of time,and its response ability has decreased significantly in the face of various disasters that break out at any time in the city.Therefore,after studying the data,based on the frequent occurrence of earthquakes in Sichuan,the author chooses Chengdu as an example to focus on "earthquakes".This paper will study the types of disasters and abandon the traditional research method of taking disaster avoidance places as the research object,but take "disaster avoidance space of old communities in Chengdu" as the main research object,Take the anti traditional disaster avoidance space model: that is,establish the disaster avoidance space model of the old community of point(community itself)-line(disaster avoidance path)-surface(enclosed area of disaster avoidance place).In Chapter 3,Chapter 4 and Chapter 5,through the investigation of Chengdu case and questionnaire,the data obtained are statistically sorted out,and the spatial characteristics and residents’ use behavior characteristics of the three constituent elements of the disaster avoidance space of Chengdu old community(community itself),line(disaster avoidance path)and area(enclosed area of disaster avoidance place)are analyzed and summarized respectively,Finally,it puts forward the corresponding optimization strategy for the disaster avoidance space of Chengdu old community,in order to be used as a reference for the community disaster avoidance level in urban disaster avoidance planning,and provide a useful reference for the research of community disaster avoidance and community planning and construction in China.