Research On The Exterior Space Composition And Design Of Three Lanes And Seven Alleys From The Quantitative Perspective

Under the background of China’s rapid urbanization,aiming at the dilemma of inheritance and translation of traditional space construction methods in the process of urban construction,this paper takes Three Lanes and Seven Alleys historical block as an example to extract the core elements of exterior space,analyze the spatial composition characteristics from a quantitative perspective,and construct the design method of exterior space,It has certain theoretical and practical significance for the contemporary inheritance and translation of traditional space.Firstly,the exterior space of Three Lanes and Seven Alleys is systematically studied.Based on the analysis of spatial evolution law,protection process,type characteristics and mutual relationship,it is divided into street space composed of main street,lane,path and square nodes from macro to micro;The courtyard space composed of house yard,patio,small garden and large garden is reasonably divided and closely connected,forming an exterior space system of Three Lanes and Seven Alleys;Secondly,the core elements of the exterior space of Three Lanes and Seven Alleys are extracted,which are divided into three levels: spatial structure,spatial form and spatial interface.It is determined to take the topological relationship,scale and element combination as the quantitative method to construct the logical system of the research on the exterior space of Three Lanes and Seven Alleys;Furthermore,through the graphical quantitative analysis tool,this paper reveals the composition law of the historical block space of Three Lanes and Seven Alleys from the structure,shape and interface of street space and courtyard space,and introduces parameter variables such as integration,connectivity,area,perimeter,longest axis,shape ratio,smoothness,compactness,aspect ratio,field of view range,openness and material proportion,Construct the quantitative evaluation system of the exterior space composition law of the Three Lanes and Seven Alleys historical block,draws the data conclusions of the structural level,scale value and proportion of constituent elements of the exterior space;At the same time,relying on tools and methods such as network open data acquisition,geographic information system(GIS)kernel density analysis,path simulation analysis and actual site behavior statistical collection,this paper carries out "space behavior" correlation analysis of the exterior space of Three Lanes and Seven Alleys,verifies the spatial composition law at the practical application level,conclude that the composition characteristics of human behavior in the exterior space of Three Lanes and Seven Alleys show a large degree of correlation,and provides evidence-based concept and cognitive perspective based on data;Finally,based on the above quantitative model and empirical conclusions of spatial behavior,from the aspects of design concept,construction mode and correlation mechanism,this paper extracts the traditional construction wisdom of the exterior space of Three Lanes and Seven Alleys,and summarizes it into four aspects: sequence organization of structure,scale control of form,guiding signs of interface,hierarchical connection and transformation of exterior space system Simple operation and easy promotion of the exterior space design method of Three Lanes and Seven Alleys,and based on the needs of contemporary development,this paper puts forward the corresponding design optimization strategy for the exterior space of Three Lanes and Seven Alleys.The research on the exterior space composition of Three Lanes and Seven Alleys from the quantitative perspective has theoretical significance to promote the local expression of space and the transformation of cognitive logic.The design method based on the traditional spatial composition law has demonstration effect and practical significance for the construction and renewal of historical blocks,and is conducive to the sustainable development of urban construction.