| 摘要 |
PURPOSE:To increase transport capacity and traveling speed, and to improve the efficiency of investment remarkably by laying the underground railway of two-layer double tracks to a shielded tunnel having a circular excavating section and respectively installing platforms exclusive for getting on and off to an intermediate station. CONSTITUTION:A shielded tunnel equal to one for super-express railways is divided into two vertically, underground railways made to travel as double track railways are laid to upper and lower sections, and the car body width of an electric car 5 is widened only by increasing an excavating section by approximately 1.3 times, and transport capacity can be augmented remarkably by approximately 2.5 times. Platforms 20, 18 exclusive for getting on and off are mounted respectively on both sides of trains 5', 5'' in an intermediate station, and the stoppage time is shortened and traveling speed is increased. The electric car 5, an upper ballast 11 and a girder 12 are supported by an arcuate post 14 along the internal surface of the tunnel through mounting plates 13 and a foot iron plate 16, and vibrations by the traveling of the electric car and the greater part of load are transmitted over invert concrete 3 and the electric car 5 of the two-layer double tracks can be made to travel. |
