A Preliminary Study On The Guiding System Of Urban Style And Features In Megacities

Since the reform and opening up,with the rapid development of urbanization in our country,a large number of modern non characteristic buildings and foreign architecture are prevailing in megacities.The original harmonious and unified urban style and feature is destroyed constructively,and the urban style and feature needs to be repaired.At present,China's megacities have basically carried out an attempt to guide urban style and feature.The special planning of urban style and feature and the compilation of style and feature guidelines have been relatively mature.The guiding effect of the style and feature of the megacities is relatively good,but the systematic research on the and feature guidance is still slightly insufficient.In this paper,the concept of " urban style and feature gene" is introduced into the guidance of urban style and feature.Taking the urban style and feature of megacities as the research object,the city style is analyzed into style and feature,which is the guideline to guide the urban style and feature.The purpose of this paper is to summarize and explore a more practical and innovative urban style and feature guidance system,and to provide new ideas for the future urban style and feature guidance of megacities.On the basis of summarizing the theory and practical experience of guiding urban style and feature at home and abroad,the concept of " urban style and feature gene" is introduced.Aiming at the problems of the style and guidance of megacities in China,the system framework applicable to the style guidance of megacities in China is summarized.At the macro level,we should guide the gene expression of urban style and feature structure,and on the basis of superposition and analysis of natural gene elements,historical gene elements and artificial gene elements,guide the city to form a urban style and feature structure with prominent core and adapting to local conditions.At the meso level,we should guide the gene expression of urban style and feature zoning.From the perspective of regional gene,era gene,complexity gene,attitude gene,and central gene,we should carry out the characteristic zoning of urban style and feature,and divide the urban style and feature zoning with distinctive features and pleasant scale.In order to facilitate the guidance of urban style and feature at the unit level,we should finally shape all kinds of zoning into historical block type There are four types of urban style and feature divisions: peripheral type,special value type and general background urban type.At the micro level,guide the expression of unit style and feature gene,focus on the feasibility of style guidance,focus on the core elements of urban style and feature,link the unit style and feature gene with the design elements of urban design guidelines,supplement the existing guidelines from the perspective of three location genes of cultural location,centrality and ecology,and from the perspective of four genes of style(regional,complex and epochal Three kinds of genes(group space feature,building detail feature and small landscape feature)are used to extend the existing guidelines,formulate unit style and feature rules,avoid repetition with the existing guidelines,guide the selective expression of unit style and feature genes in different directions according to different units,so as to form a concise and balanced unit style and feature.Finally,aiming at the problems of urban style and feature and guidance in the central urban area of Tianjin,the system framework of urban style and feature guidance is used to guide the central urban area of Tianjin to form a unique urban style and feature structure of "one core,multi-core,combination of environment and radiation",and a distinctive style and feature Division of "characteristic oriented,pleasant scale".Especially in the guidance of unit style and feature,different combinations of unit style and feature gene are used to guide the expression Finally,it leads to the formation of the unit style and feature of "emphasis,harmony and unity".From macroscopic to microcosmic,we should push forward at all levels,guide the urban style and feature,seek the continuation of the urban style and feature,and finally make the urban style and feature of Tianjin central city very recognizable from inside to outside.