Study On The Strategy Of Elevating The Landscape Of The Second Ring Road Interchange In Xi'an

Overpass has become one of the important elements of modern city traffic system,overpass space belongs to the city public space,which landscape has also become the main component of city landscape system.The quality of the urban landscape environment directly affects the quality of the urban landscape,especially the interchange landscape with the planar characteristics.The landscape of the second ring road interchange in Xi'an city is taken as the research object,and the strategies and methods of landscape promotion are systematically explored,which has a prominent practical significance.The overpass effectively relieves the pressure of urban traffic,but its monotonous visual image and fragile ecological environment make the overpass space become the "negative space" in the city".Because the overpass landscape is a part of the urban landscape,transformating the "negative space" into the positive space through the promotion of landscape is a subject that needs to be discussed seriously.Firstly,this paper introduces the research background,expounds the purpose and significance and defines the content and the scope of the study.Expounding the concept of urban overpass,analyzing and summarizing the spatial types,characteristics and space utilization forms of the overpass landscape,so as to realize the preliminary understanding of the overpass landscape.The theoretical basis for improving the overpass landscape is put forward according to the perspective of landscape ecology,road traffic,environmental psychology and plant landscaping.Secondly,from the analysis of the surrounding function,architectural form,landscape types,landscape morphology,space characteristic,space utilization and landscape aspects of the Second Ring Road Interchange in Xi'an.From the point of the location environment,the shape of the bridge and the space accessibility,the landscape of the overpass is divided into ornamental overpass landscape and accessible overpass landscape.Summarizes the problems and origon existing in the landscape,and provides an empirical basis for the improvement of the principles,strategies and methods.Based on the analysis of the causes of the overpass landscape problems,this paper puts forward the principles of the functional rationality,ecology,human nature,integrity,regionality and aesthetics.From the macro level,this paper constructs the strategy of improvement of the ornamental overpass landscape in the background of node cognition.Based on the concept of "place cognition",this paper constructs theimprove strategy of the accessible overpass landscape.Based on the micro level,this paper discusses the concrete methods of the elevation of the bridge and the space under the overpass bridge.Finally,selecting two different types of typical cases to study the strategies and methods of landscape promotion.The theory and method described above are put into practice,and the theory is proved through practice.The result shows that the ornamental overpass landscape improvement strategies including shaping the landscape node,improve the space intention;the attention color,enhance environmental integration;rich ornamental landscape elements,and create a viewing platform to improve the landscape,improve the permeability of the line of sight.The accessible overpass landscape promotion strategy mainly includes rich landscape elements,enhance the sense of landscape level;plan bridge area,improve space utilization rate;increase the service facilities,enhance the visual sense of belonging;additional pedestrian passage,improve the spatial accessibility;extraction of regional culture,show the city characteristics and strengthening maintenance,maintain environmental hygiene.From the micro level,the paper puts forward the specific methods of the landscape improvement of the overpass,which mainly includes the construction of the bridge landscape and the landscape design of the space under the bridge and the subsidiary space.