| Urban rail transit is a mode of public transportation which the track is isolated independently.lt can be divided into subway,light rail and region rail according to the technical characteristics,transportation amount,regional service function and etc.Comparing with ordinary bus and trolley,urban rail transit has the obvious advantages of faster speed,bigger transportation amount and so on.So it takes an important role in urban public transportation.With economy’s developing in our country,more and more transportation questions appeared,which has restricted the development of urban economy.One reason is that big cities’public transportation,such as Changsha city,mainly relies on common bus or trolley.This kind of small amount transportation vehicle cannot meet the needs of people;another reason is that the development of car has brought enormous pressure for urban transportation and environment.For these reasons,in the new turn of urban master planning,many cities propose adjusting the transportation structure,giving priority to develop mass traffic.They hope to establish a city passenger transportation system which takes urban rapid rail transit network as its skeleton to solve the conflict of city traffic,and guide the construction of reasonable urban structure and function.First of all,combined with domestic and foreign typical city case,we analyzes the city space form of rail transit network for different structure and sum up the city space form and the city rail traffic integrative development strategy.Secondly,we analyze the historical evolvement process of spatial form and city traffic,conclude the spatial expansion of Ji’nan city as the "single center,concentrated into a film",and analysis in depth the contributing factor,put forward the necessity of the construction of rail transportation.Thirdly,according to the research results of spring protection,we evaluate and analysis the spring protection,eventually make the network planning strategy under the premise of the spring protection.Depended on the focus of city planning rapid rail transit network planning,we employ the methods of quantitative and qualitative analysis,.Based on satisfying the public passenger transition demand,combined with the population of Ji’nan city and land use scale,we put forward the reasonable development scale of the rail network.Combine the factors of the city space morphology,the city space structure,the passenge traffic passage,the main passenger distribution centers,we put forward the city rail transit network architecture,then put forward the alternative line network scheme.Finally,according to the actual situation of Ji’nan,we put forward the evaluation system of line network planning scheme,evaluate the multiple alternative line network scheme,and finally determine the recommended line network scheme and evaluate the recommended scheme comprehensively. |
