有砟轨道技术在北京市城市轨道交通地下线正线的应用研究

摘要

研究分析北京市城市轨道交通地下线正线应用有砟轨道结构技术措施。对地下线正线应用有砟轨道的结构形式、部件选型进行设计分析，并辅以模拟计算手段对道床部分典型动力特性进行分析，借鉴国铁养护维修典型年运量理论对地下线有砟轨道养护维修工作量进行分析，认为道床几何尺寸、纵横阻力等稳定性指标能够满足相关规范要求，设备选型合理可行，养护维修工作量适中，认为北京市城市轨道交通地下线正线应用有砟轨道技术具备可行性和重要意义。%Research and analysis are conducted of the ballast track technology applied to the main track of Beijing urban rail transit system. Track form, equipment selection, and typical dynamic performance related to the underground main line are analyzed by means of simulation and the maintenance workload of ballast track is analyzed in terms of railway system annual traffic volume. The results show that the ballast track geometric dimension and ballast resistance meet the specifications, the equipment selection is reasonable and feasible, the maintenance workload is moderate, and the ballast track technology is applicable for the main track of urban rail transit system.