| Urban rail transit,as the blood of the city,is more and more important in urban developing,transporting nutrients for every in city,while urban rail transit stations,as feeding stations,play a transfer role.With the change of time,the urban rail transit sites not only become the point of transportation,and urban areas gradually and promote urban development points,catalyst,urban rail transit site space of the original pure traffic conversion function can not meet the current needs,meet the new era of trigger point of the new urban development site spatial patterns of urban rail transit construction is imminent,three-dimensional space is becoming more and more high degree requirements.In recent 10 years,to the north of xi ’an is developing rapidly,xi ’an new planning hall,concert hall,which are found in the library here,after the completion of the Olympic sports center and port area development axis,combined with the subsidiary office,residential,commercial,and other functions of configuration,will form the relatively complete composite core city,northeast of become the core of driving the development of xi "an district of northeast catalyst,to speed up the construction in the north of city.In three-dimensional space design of urban rail transit sites in the study,the paper first and second chapter firstly studied the concept of catalytic perspective,from the perspective of catalyst and the joint space influence on urban development as a starting point,through the city,region,site three layers of progressive relationship will catalyst perspective with two concepts cleverly combined with three-dimensional space.In the third chapter,the basic research methods of three-dimensional space design of urban rail transit stations are discussed,and the key elements,spatial structure and design influencing factors are discussed.Then in the fourth chapter,through the research and analysis of highly composite space stations at home and abroad that have a great impact on urban development,the relevant factors,spatial prototypes and spatial organization modes that influence the three-dimensional design of urban rail transit stations are discussed,and the generality is extracted from the individuality.Then in the fifth chapter summarizes the principles,methods and spatial organization patterns of three-dimensional design of site space.Finally,in the sixth chapter,combined with the current situation of the development of xi "an city,to vigorously construction by means of the national games held the Olympic sports center and port area for the important hub site-double walled standing and axial core space" changan valley "to carry on the practical application,from the space design principles,methods,three-dimensional space organization mode,migrating streamline organization,function and catalytic methods for analysis,which provides the theoretical support and practical experience for reference. |