Study on the construction conditions and planning feasibility of urban rail transit loop line
As an important part of the urban rail transit network,the urban rail transit loop line can not only undertake the distribution function of passenger flow around the central urban area,but also provide more transfer paths for radiation commuting passenger flow between the central urban area and the suburbs,reducing the transfer pressure of central urban stations.On the basis of sorting out the classification,functions,and basic characteristics of urban rail transit loop lines,this article analyzes and elaborates on their construction conditions.Then,taking the Shenzhen rail transit loop line 15 as an example,the applicability and feasibility of its planning are analyzed from five aspects:the scale of existing urban rail transit network,urban development layout,passenger flow demand,engineering construction conditions,and loop line length.Corresponding suggestions are proposed for the possible operational issues that the loop line may encounter in the future,in order to provide reference for the reasonable planning and construction of urban rail transit loop lines.