Study On The Complex Structure Of Urban Forms And Planning Optimization In Southwest Mountainous Region

The construction of towns in the mountainous areas of southwest China is characterized by complex terrain conditions,difficult construction,and sensitive ecological environment.With the rapid development of urbanization,the towns in the mountainous areas of southwestern China are expanding rapidly,and they are increasingly constrained by complex terrain.Diversification and multi-dimensional development of internal structures are obvious.Therefore,the research on the complex structural features of the towns in southwest mountainous areas is an important part of the study of towns in southwest mountainous regions.Based on the study of the typical topography and urban form of southwest mountainous towns,this paper takes 16 southwestern typical mountainous towns as research objects,uses complex network theory and methods,and constructs the southwest mountainous town form network model to grasp the shape of mountainous towns as a whole.The complexity and systematicness provide planning optimization strategies for the development of towns in southwest mountainous regions.First of all,this paper combs the complex landforms and urban morphological characteristics of the Southwest Mountainous Region,and summarizes the topography and urban form of the urban construction area.On this basis,16 typical mountainous towns in the southwest are selected as research objects.The analysis of the practical problems in the process of the development of urban forms provides a basis for the study of the structure and characteristics of the post-urban towns and the planning optimization strategies.Secondly,using complex network theory and methods,starting from the relationship between urban form construction land and road connectivity,the abstraction of the mountain urban form network is carried out.The urban land use network and the road system collaborative service network are constructed,and the statistical properties of the network are established.analysis.Under the calculation of network statistical attributes,the main structural characteristics of mountainous towns are analyzed,including connectivity,group structure,equilibrium,and stability.The calculation index system is constructed for these four aspects and static and dynamic.Analysis and evaluation.It can be seen that mountainous towns have complex overall structural connectivity,poor local disequilibrium,obvious cluster structure characteristics,and large differences in the stability of urban complex structures under different dynamic disturbance tests.Then,based on the calculation of network structure characteristics,returning to reality,the complex structural characteristics of the urban morphology of southwestern mountainous regions were studied from three aspects: the identification of the phenomenon of “topographical barrier” in the shape of mountainous towns,the morphological and structural features of mountainous towns,and the analysis of impact mechanisms.Outgoing: 1)The urban form of southwestern mountainous areas is characterized by the spatial distribution of “aggregation-fragmentation-unbalanced”;2)the shape of the towns in the southwestern mountainous region is characterized by “multi-cluster-circle-layer” structure;3)the overall efficiency of urban form connectivity efficiency in southwestern mountainous areas The distribution of "Pyramid" has obvious characteristics of connected channels.Finally,based on the analysis of the morphological and structural characteristics of the towns in the southwestern mountainous area and the analysis of the influencing mechanism,the existing problems in the urban morphological structure and the practical significance of the structural characteristics are analyzed to determine the plan optimization ideas for the development and construction of the towns in the mountainous region,and to construct a planning optimization strategy system.Mainly from the urban form clusters,the identification of connectivity channels and planning,internal road connectivity planning three aspects of planning optimization research,and from the planning and design and management of the two aspects put forward relevant strategic advice,improve the connectivity and stability of the shape and structure of mountain towns.This paper explores the complex structure of the urban form of the Southwest Mountainous Region.At the theoretical level,it attempts to cross-research the complex network theory and methods in urban and rural planning.It also proposes planning optimization strategies for urban form development in the Southwest Mountainous Region,hoping to shape the southwest mountainous towns.Sustainable development provides some new methods and new theories.