聚氨酯合成轨枕国内研究及应用进展

Domestic Research and Application Progress of Polyurethane Synthetic Sleepers

聚氨酯泡沫合成轨枕最早配合直线电机牵引系统应用于城市轨道交通,因其良好的综合性能,在国内获得广泛研究和应用。对比分析国内合成轨枕的技术发展历程和国外、国际相关合成轨枕技术标准,并调研合成轨枕在国内的应用进展及使用过程中出现的问题和解决措施,主要表现在:横向阻力偏低,部分道钉孔失效或涂层破损;这些问题可通过产品结构改进及安装维护方案优化进行解决。结合国内轨道交通领域的发展需要,及聚氨酯合成轨枕产品性能特点和市场现状,提出聚氨酯合成轨枕产品在我国未来发展建议。

Synthetic sleepers of fiber-reinforced polyurethane foam were initially applied in urban railway traffic to adapt to the linear induction motor system,and they have been developed into national and heavy-haul railways in recent years.Synthetic sleepers have been widely researched and applied nationwide owing to their excellent overall performance.The technological development history and standards of synthetic sleepers in China were analyzed and compared with foreign and ISO standards.In addition,the application progress,application problems,and solutions were investigated.Suggestions for the development and prospects of polyurethane synthetic sleepers in China were proposed by combining the requirements of domestic rail traffic with the application problems of synthetic sleepers.