预应力混凝土轨枕自1958年开始大量推广使用以来,至今已有二十多年的历史。目前,全国铺设混凝土轨枕已达六千多万根,铺设里程达三万多公里,遍及全国铁路主要干线。混凝土轨枕的推广使用提高了铁路设计标准,改善了轨道质量,为国家节约大量木材,是我国铁路技术改造取得的一项重大成果。混凝土轨枕的使用情况,铁道部曾多次组织过调查。1981年10月铁道部联合调 Prestressed concrete sleepers have been used extensively since 1958 and have been used for more than 20 years. At present, more than 60,000 concrete sleepers have been laid across the country, with a total length of more than 30,000 kilometers, and it has spread throughout the country’s major railway lines. The promotion and use of concrete sleepers has increased the design standards for railways, improved the quality of the rails, and saved the country a large amount of timber. This is a major achievement of China’s railway technological transformation. The use of concrete sleepers, the Ministry of Railways has organized investigations. In October 1981, the Ministry of Railways jointly adjusted