Initial Probe Of Height Control Approach In Xi'an Old City Area Of Ming Dynasty

Altitude as the significant element in the city three—dimentional space design of urban design ,is the deep material contents in the urban form, and also a important way to reads the city. Old city of Xi'an which one of the urban designs art achievement is the organic order of the three-dimensional space, the characteristics of the even gentle and expensive level type city is one of the huge achievements of the Chinese ancient city space design. The city that owns more than 3100 years city construction history and more than 1200 years capital history take place a lot of varieties on the long history, depend on the height to contact new city construction and histories of city form mutually, make old city at fast modern city constuction continue its history characteristic, need to carry on the research and the control leadings of science system.Therefore, the paper first to clarifies the height's function and positions in the city form, put forward the height is a kind of historic form characteristic that the city becomes in particular history periodly of long-term produce, living process. Then analyzes to the factor that height become, have point out high formation and develop variety for it the reason of the oneself, have special historic and social identity. Then carry on the evaluation to the present condition of the old city height control, to analyzes the existent problem in the height control and executive usefulness, and goes step further to trying inquires deep regulation of the problem back.The paper expected to evaluate after divide three levels (city subarea building height control, sight corridor height control, historic relics unit peripheral building of high control) expect to evaluate the circumstance of old city after height control carry on. Total to say, the old city of Ming dysnaty area's traditional city space special features have already taken place with the very big variety in more recent city regeneration ,the height control programming have no can according to the performance that conceived, break the phenomenon of the regulation taken placeeverwhere, the main regulation of the back the performance develops for the city economy and history environment of antinomy between protection.Because city economy, society of development, height of growth can't avoid, how to look for the balance relation of protection and development, this paper at high control method up the trial does a summary and analysises towards the experience and shortages that already haves, putting forward the homologous basis and ways, thus at heighe control up to the protection of the history form rise aggressive function.