城市轨道交通线路限速与列车自动防护顶篷速度匹配性设计探讨

上海城市轨道交通1~10号线的设计速度为80km/h,但在运营时部分线路列车实际最高运行速度达不到此设计值。这主要是因为车辆、限界、线路、结构、信号等专业之间未能进行充分的匹配,各自都留有安全余量,使得ATP(列车自动防护)顶篷速度设置过于保守,ATO(列车自动运行)速度无法达到线路设计速度,降低了线路的运行效率。基于线路ATO速度能达到80km/h的设计目标,提出了3个等级的线路限速值以及与ATP顶篷速度匹配的设计思路,在确保仍能实现信号安全防护的前提下,通过提高ATP顶篷速度,来实现设计速度目标。

On the Matching Design of Line Limited Speed and Siganl Speed for Urban Mass Transit

The actual running speed of Shanghai urban mass transit lines can't achieve 80 km/h when the designed speed is 80 km/h.The most important reason is that the vehicle,clearance,line,structure,signal and other majors haven't fully matched,each of them containes a safety margin,which makes the ATP ceiling speed setting too conservative and the ATOspeed lower than 80 km/h.Aiming at the target that the ATO speed should arrive at 80 km/h,three levels of line limited speed and their matching with signal speed are proposed.On the condition that the signal safety protection can still be ensured,the design target can be achieved by improving the ATP ceiling speed.