Spatial Analysis And Reparative Countermeasures Of The Old City Of Shashi Under The Perspective Of "Informality"

In the current turn shantytowns into new housing areas,because of the lack of overall understanding of the old values and characteristics,often incorporate old shabby PengGai range,and measures of conservation and renewal of old city is lack of a scientific way,finally forms the large open to build as a result,makes the city a lot of historical information is lost,the process is especially obvious in Shashi renewal.Based on the "informal" as the Angle of view,the lack of a control mechanism for the official formal rights or relaxation and form under the liberal paradigm of logic,and in Shashi of Hubei province as the research object,through the analysis of the informal evolution course of the old city,parsing the old informal evolution characteristic of the coupling agent and space form,combining Liao Zi river informal remaining space characteristic of historical area,put forward the corresponding repair measures,for the present Shashi inspired and methods of the old city renewal provides a known reference.The core content of this paper is divided into four parts:Firstly,informal evolution analysis.Shashi formation is a process of gradually grow old town,with the Yangtze river south,embankment construction,as well as the dredging of the canal,relying on water environment to grow old gradually by metro of Qin and Han dynasties,the development of the port city of Tang and Song dynasties,to the town during the Ming and Qing dynasties,the last also due to the weakening of water transportation system into land transportation.Secondly,the induction of informal evolution cause.There are three main reasons for the informal evolution of the old city in Shashi: the first is the basic force of water conservancy,which affects the urban structure of the old city.The second is the dominant force of economy and trade influences the organization mode of urban street form.The third is it that is the control of the folk autonomy,which has formed many secular place signs.Thirdly,the analysis of irregular spatial morphology.Coupling the inner motivation of the evolution of city informal its urban structure is embodied in "with the dike growth" morphological characteristics,from a single dike street banded structure,the compound banded structure to two bank street,and then to three dike mesh structure of the street,at the same time,its pattern of network system and the function is present "with the bank to expand" and "Jiang Jin Di Shi" characteristics;Driven and constrained by the land price economy,the street profile has three forms: long courtyard grid,short courtyard along the street and mixed free courtyard.The site signs reflect the geographical,industrial and divine relationship of the folk autonomy,and map to the space,forming public places marked by guild halls,internal and external docks,temples and shrines.Fourth,is the irregular space repair countermeasure.Focusing on the value characteristics of informal space remaining in the old city of Shashi,taking the historical section of Liao Zi river in the city as the object,this paper puts forward the micro-renewal strategies of dike street structure continuation,texture unit weaving and secular site activation.In addition,from the government,enterprises,indigenous people and other diverse subjects,the planning participation of the synergy and small,progressive update timing.