ChatGPT 中文站 - 城市轨道交通网络类型：交叉型与共线型

According to different operating organizations and transfer modes, the urban rail transit network can be divided into intersecting and co-linear types. As shown in Figure 2, the basic characteristic of the intersecting network is that two rail transit lines separate from each other at transfer stations. The two lines with transfer relations usually have one or more common transfer stations, which are often not continuous. The urban rail transit network achieves relatively high network coverage with fewer lines, which is conducive to rapid expansion and can cover major passenger corridors. As shown in Figure 3, the basic characteristic of the co-linear network is that two rail transit lines use parallel or shared tracks at transfer stations, and passengers transfer to another line in the same or opposite direction on the same platform. There are usually continuous transfer stations along the line. Cities with this type of network often have unique urban forms and histories. At the same time, not every line runs co-linearly or on shared tracks. In the construction and development of co-linear networks, a combination of co-linear and intersecting modes can be used to expand the network.
If there are two or more consecutive transfer stations in two or more lines in the urban rail transit network, the network is considered co-linear, and the co-linear degree is represented by r, as shown in formula (1):
where n represents the number of groups of co-linear tracks, and if there are two co-linear lines, n=1; C represents the combination or combination number of two lines; m represents the total number of urban rail transit lines; k represents the number of consecutive transfer stations in two co-linear lines; p represents the number of stations on line i; and q represents the number of stations used on line j.