Abstract: With background of railway transportation pattern in China, the railway section signalling model is developed based on quasi-moving block. The model uses traction calculation and signalling layout principle and considers orbit code sequence, ocs mast position, and electrical sectioning position, etc. The heuristic simulation algorithm is designed for model solution. With the goal of the minimum signalling layout under the condition of quasi-moving block, the proposed algorithm automatically realizes the signaling layout. The railway section signalling system is established and a case analysis of signalling layout is conducted. The results showed that: compared with the actual signalling layout, the simulated amount of signalling layout was reduced by 4, which on average, 1 signal was reduced along 10 km lines. The total length of division track circuit was reduced by 8〖KG*8〗464 m, which on average, 227 m was reduced along 1 km lines. The developed system realizes the optimal layout of railway section signal.

Key words: railway transportation, quasi-moving block, section signalling layout, train traction calculation, computer simulation

摘要： 以我国铁路运输模式为背景，以列车牵引计算和信号布置原理为基础，综合考虑了轨道电路码序、接触网支柱位置、电分相位置等条件，构建了基于准移动闭塞的铁路区间信号布置优化模型. 设计了模型求解的启发式仿真算法，算法以准移动闭塞条件下信号布置数量最少作为实现的目标. 研制了铁路区间信号布置仿真系统，并进行了信号布置实证分析. 结果表明：与实际信号布置方案相比，仿真布置方案的总信号布置数减少了4个，平均每10公里线路减少约1个信号点；分割轨道电路总长度减少了8464 m，平均每公里线路减少分割长度227 m. 研制的系统初步实现了铁路区间信号的优化布置.

关键词: 铁路运输, 准移动闭塞, 区间信号布置, 列车牵引计算, 计算机仿真