Study On Mountainous Urban Interchange Planning Based On Spatial Strategy Coordination

With the accelerating process of urbanization in our country,rapid urban expansion,the increasing number of motor vehicles,urban motorization level enhances unceasingly,urban spatial development and traffic problems seriously hindered the development process in contemporary society of China.With the guidance of sustainable development and innovation,coordination,green,open,sharing the new concept of social development,our country city space use patterns have undergone historic changes,namely from past spread,extensive development mode change is now the compact and intensive development.As an important part of urban roads,urban overpass is urban road network hub facility and the evolution of urban spatial development has played an important role,it can make traffic fast switching,effectively improve the efficiency of the current road traffic.Compared with plain city land,complex landform and ecological environment sensitive characteristics of Mountainous City.The Mountainous City Road overpass has its own characteristics.Therefore,the study of space from the perspective of strategic coordination of urban planning and design methods Interchange,land conservation function in ensuring the premise,to form a more intensive planning and construction of the interchange mode,the content is very worthy of study.Taking Chongqing as an example,based on the analysis of the mountain city spatial structure characteristic,further analysis of the impact of urban spatial structure on the mountain road network and overpass.By analyzing the existing interchange type division,summarizes the current interchange classification problems combined with the current City Mountain Interchange,the proposed new criteria for the classification of the type of interchange.Research the type of relationship between the type and form of interchange is proposed under different traffic characteristics interchange,form and size of the land control recommendations.Proposed space-based strategic coordination interchange planning principles and ideas,and in all levels of planning and land use and gradually form a clear interchange control requirements;Proposed interchange design principles and methods based space strategy coordination,key technical indicators values and gives recommendations to provide technical support for the planning and design of the interchange.Starting from the angle of strategic coordination of space and mountainous urban interchange scheme evaluation index system is established.The index system includes the interchange of traffic function,economic benefits,environmental impact,mountainous terrain adaptability index.Then according to the nature of the various indicators,to take the different quantification methods,in order to protect Mountain City Interchange Scheme Evaluation of objective and scientific,the comprehensive evaluation method,namely the commonly used level analysis method and fuzzy combined evaluation of interchange scheme.Finally two design scheme of wangjiaping interchange carries on the example analysis.Examine the validity and feasibility of the methods of comprehensive evaluation of the interchange,also conforms to the demand of urban development based on strategic coordination of Space Mountain City interchange design concept.