大连快轨3号线续建工程区间信号设计

Design of Interval Signal for Continued Project of Dalian Rapid Rail Line 3

研究目的:通过对大连快轨3号线续建工程线路平、纵断面条件分析,结合线路通过能力要求和信号设备的类型,按照线路运量要求进行列车模拟牵引计算,通过模拟牵引计算结果,设计出适合大连快轨3号线续建工程列车安全运行的运输能力和合理的区间分界标位置。研究结论:通过模拟牵引计算,列车最高运行速度为79 km/h时,最大制动距离为657 m,考虑必要的安全距离,本线最大的闭塞分区长度取700 m即可满足要求。在开发区站附近,考虑列车的折返要求和列车运行速度,最小闭塞分区长度取200 m即可满足要求。在采用固定闭塞方式条件下,信号设备速度码分级应与列车运行速度相一致,不能限制列车的正常运行,从而提高列车的运行速度。

Research purposes： Through analyses of the route plan and profile of the continued project of Dalian rapid rail line 3 and in combination with the carrying capacity of the line requirement and signal equipment as well as according to the passenger volume requirement, the traction simulation calculation is made, and based on the calculation results, the transportation capacity and reasonable divisional location of signal are designed for the purpose of guaranteeing the safety of the train on the No. 3 rapid rail line. Research conclusions： Through the simulation calculation, the highest train speed of the No. 3 rapid rail line is 79 km/h and the biggest braking distance is 657 m. However, considering the necessary safe distance, the maximum blocking section length will be 700m that can satisfy the requirement of train operation, and considering the requirements of the train returning and the train speed, the minimum blocking section length around the kaifaqu Station will be 200 m that can satisfy the requirement. With fixed automatic block, the speed grade of signal equipment should be consistent with the train speed without limitation of the normal train operation for increasing the train speed.