Based On The Study Of The Evacuation Of Xiashan City Overlook Space In CA

Mountain city overlooking landscape is not only the natural landscape resources given to the city by nature,but also an important part of the urban characteristics.Now,with the rapid urbanization,the mountain body is gradually integrated with the urban construction,forming the spatial characteristics of the mountain city.However,the development of urban construction also brings some inevitable problems.The relationship between the city and the mountain gradually changes in the expansion.The mountain landscape is constantly broken and disintegrated in the upsurge of urban construction,and the overlooking landscape of the mountain city also slowly disappears in the tall buildings and dense blocks.When people look far away,the green mountains has been gone,replacing them with the dense and airtight facade of high-rise buildings.In order to avoid the urban space becoming more dense and prevent the overlooking landscape interface from being unable to see the natural mountain landscape,it is necessary to put forward some evacuation methods for the overlooking space of the mountain city in order to form a good viewing surface of the mountain.Taking the overlooking space of Jinan mountain city as an example,this paper analyzes the constituent elements of overlooking space and the evolution process of overlooking space of mountain city,especially pays attention to the changing trend of high-rise building and super-high-rise building,the change of landscape view surface at fixed overlooking point,etc.,in order to extract all kinds of factors that affect the change of overlooking space.According to the effect of various factors on the overlooking space of mountain cities,the main elements are extracted,and the functions and rules played by them in the evolution of overlooking space are summarized,and the rules and evaluation functions of various factors are constructed as the basic part of the CA model.The related data is converted into the research platform,combined with the transformation of agents and other elements,the spatial model of overlooking mountain city in the research area is formed.After setting all kinds of parameters and iterative years,the CA model of overlooking space is formed.At the same time,according to the present situation of urban building space and the demand of overlooking landscape,the evacuation target is put forward,and the evacuation rules of overlooking space are formulated under the guidance of the target,and applied to the CA model.After a certain time of iteration,the results of mountain city overlooking model under the influence of evacuation rules are converted into GIS and other platforms for data analysis and three-dimensional spatial modeling.Through the analysis of mountain degree and urban spatial interface,the feasibility and rationality of evacuation rules are discussed,and finally the evacuation method of mountain city overlooking space is obtained.The research results show that although this study can not bring all the complex elements into the formulation of CA rules,it can put forward reasonable evacuation suggestions for overlooking space according to the simulation results.It can put forward some solutions for the follow-up study of urban dynamic model construction,and put forward some suggestions and planning models for the optimization of overlooking spatial interface of mountain cities in the future,and put forward reasonable suggestions for the development of urban space and urban structure.The contribution and novelty of the paper is that :the change process and evolution mechanism of architectural space form in Jinan mountain city area are summarized,and the relevant influencing factors are extracted,based on CA model,the evaluation function and rules of influence factors are constructed,and the urban self-growth model is established to verify whether the urban development law is in line with the present situation,and the model is adjusted appropriately according to the simulation results.Aiming at the urban problem of overlooking space,the evacuation method is proposed.Based on CA principle,the evacuation method is defined as a new evaluation function and rules,and the mountain city overlooking space model under the evacuation method is constructed.Through the independent programming of Netlogo platform,the construction of urban self-growth model and mountain city overlooking space evacuation model is realized,and the future urban spatial structure under the protection of foundation overlooking evacuation,mountain city overlooking interface protection and mountain ecological style protection is explored,and the future urban development plan is formed.