关于并联高架路与扭环线型地铁的设想

Assumption Concerning Parallel Elevated Road and Torsion-ring Subway

并联高架路主要适用于大城市的郊区,地铁主要适用于大城市的主城区。扭环线型的地铁,可为解决正在规划拟建的城轨线路在主城区的线网密度太低,而在总体城轨规划中线路太长、投资太大的问题提供一种新的线型方案:在一条双线的地铁运营线路上至少有一个通过线路自身的扭转形成的环型,在这个环型上至少有一个线路自身的、上下分离立体交叉的换乘车站。主城区的扭环线型的地铁与郊区的并联高架路相配合,组成大城市的骨干公共交通网。

The parallel elevated road is mainly suitable for the suburban of the big cities,and the subway is mainly suitable for the main city area of the big cities.The torsion-ring subway can provide a new alignment scheme for solving the problems that the line network density of the proposed urban rail line under planning is too low in the main city area and the line is too long and the investment is large in the overall planning of urban rail.The scheme is that there is a ring at least formed by itself torsion on a double-line subway operation line,and there is a transfer station at least for itself and for the upper and lower separated grade separations on this ring.The cooperation of the torsion-ring subway in the main city area with the parallel elevated road in the suburban organizes the key public traffic network of big city.