Study On Design Of Multi-type Urban Rail Head Based On Shape Grammar

As the national basic transportation artery,rail transit is closely related to the development of national economy.In the 21 st century,with the rapid development of high-speed railway and urban rail transit in China,the number of maglev train,subway,tram,monorail train and other rail transit vehicles has increased significantly.In the process of rail train development,how to ensure that the shape of multi type public rail transit not only reflects the connotation of urban regional culture,but also has a unified visual image has become the innovation point of the current multi type rail train shape design.It has practical significance for our modern cities to build a unified visual recognition system of rail transit vehicles.This paper aims to solve the regional characteristics and serialization design of multi type rail transit head design as the breakthrough point,focusing on all kinds of rail transit products in the same city,aiming to break through the limitations of the current rail transit vehicle modeling design only for a single type of products,and put forward the use of shape grammar and product PI theory to realize the serialization and regional characteristics of design.Based on the research on the front face of four types of rail junctions,the differences and key points of different types of rail transit design are pointed out.This paper analyzes the function and structural characteristics of the head shape components of rail transit vehicles,and extracts the structural characteristic lines of four types of head shapes of rail transit vehicles.In the form of questionnaire survey,the key shape feature lines are extracted as the initial shape set,and combined with shape grammar,the structural modeling design rules are deduced,and the similarity design rules of multi type rail junctions are summarized,and the front face shape element feature library of urban rail vehicles is established.Secondly,the urban regional cultural elements are selected as the image source of this design.Based on the regional cultural characteristics,a large number of design elements are extracted.After selection,the final design image elements are selected.Combined with shape grammar,the extracted images are abstracted and summarized in a series,which are regarded as the image source of this design,and the image element modeling feature library is established.Based on the preparation of four types of rail transit modeling structure and image materials in the early stage of the above design practice,the final design orientation is determined.After rule mapping and image reorganization,a variety of modeling serialization schemes under the same concept image can be obtained,and then the optimal scheme is selected for refinement,On the basis of the selected regional cultural elements,the shape grammar is used to deduce the modeling scheme with similar characteristics,and the feasibility of the design method is verified by random questionnaire survey.The results show that the shape grammar can guide the application research of regional elements in the series design of urban multi type rail vehicles,and provide ideas for innovative design of vehicles.