Research On Urban Fabric Distribution Characteristics And Internal Formation Mechanism Based On Building Form Relevance Network

Urban fabric as the external manifestations of the urban space form,the elements in the city is in for a long time the natural environment and artificial system under the dual role of interconnected to form a whole,have a certain scale and follow the rules of certain organization,contains the nature,city and the complicated and close relations between and among people,reflected the spatial characteristics of a city,is also an important means of urban design.However,in the process of rapid urbanization in the past 30 years,the urban fabric reflecting regional characteristics has been damaged constructively to varying degrees,the urban context has been gradually annihilated,the height of the city is out of balance,and buildings with huge volumes and different styles emerge one after another.The protection and continuation of the urban fabric are facing severe challenges.It is also in the process of rapid urban construction that the heterogeneous coexistence of urban fabric appears,which breaks the characteristics of large area and single texture in the past,making modern urban fabric show a different context from the past urban fabric,presenting the characteristics of complexity.As an expression form of urban morphology,urban fabric is not a simple morphological whole.The analysis of urban fabric needs not only to consider the basic constituent units of the fabric,but also to discuss the complex relationship and complex structure between the fabric units.How to extract and summarize the inner law and mechanism of urban fabric from the relationship between the elements of urban fabric is the core issue of this paper.Both related research mostly from the perspective of typology of city texture vertically or horizontally sliced parsing,lack of from the overall level of urban texture feature rule and internal mechanism,internal relationships between the elements of urban texture analysis is still insufficient,the existing research methods have been difficult to meet the deep analysis of urban fabric,combined with relevant methods in the field of other disciplines,It is an inevitable trend to introduce a new perspective into urban fabric research.Urban architecture is an important component unit of urban fabric.Buildings with similar or different morphological characteristics form a rich and diverse urban fabric through different permutations and combinations,which indicates that there is a certain spatial correlation between architectural forms and has the characteristics of universality.Therefore,this paper holds that the urban fabric is a complex network formed by the morphological relevance between buildings in essence,and is the "composite" and "collage" of various architectural morphological relevance networks.Therefore,based on the building as the basic component of city basic unit,the city texture as the correlation between architectural form and form a complex network of,domain knowledge map in the related technologies of the construction of relevance network method,combined with 3 d vector data construction,put forward a set of construction of building forms relevance network method process,and on this basis,Analyze the characteristics and internal mechanism of urban fabric.Specific full text structure is as follows: the first chapter is the introduction and literature review research part,from the typology from three perspectives,complex systems and complex network of urban fabric of reviewed the related studies,this paper expounds the texture elements internal connection to the attention of a gradually from the recessive to dominant,from micro to macro,from qualitative to quantitative process;The second chapter is the theoretical elaboration and construction method of architectural form relevance network.Based on the theory,the concept,types,characteristics and construction ideas of architectural form relevance network are condensed,and combined with the advantages of domain knowledge atlas technology,a set of method flow of building form relevance network is proposed.The third chapter is the empirical part,taking Nanjing Old City as an example,combining with the three-dimensional building vector data of Nanjing old city,according to the method process in Chapter 2,the 19 attribute extraction indexes of Nanjing old city buildings are measured,and then the form relevance network of Nanjing old city buildings is constructed.The fourth chapter is the analysis part.Based on the relevance network of nanjing old City architectural form,the distribution characteristics and internal mechanism of nanjing old city fabric are discussed from the whole to the local and from the macro to the micro,and five characteristic laws are summarized: Hierarchical network,tree differentiation;Cluster growth,spatial nesting;Clear boundary and clear fracture;Morphological gene,toughness difference;Plates meet,dense inside and sparse outside;The sixth chapter summarizes the important conclusions of this paper,discusses the practical application of architectural form relevance network in urban planning and urban renewal,and puts forward the shortcomings of this study and the prospect of future research.