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The 115-kilometer-long Beijing-Tianjin inter-city railway is the first high-class passenger dedicated line built by China using ballastless track technology, with a design speed of 350 kilometers per hour. After it is completed, it takes only half an hour by train from Beijing to Tianjin, which will play a positive role in improving traffic conditions in Beijing and Tianjin and accelerating economic development.
The test section and the second section of the China Railway 17th Bureau Group are the leading faucets of the whole line. The total length of the line is 50.1 kilometers, accounting for about half of the total length of the line. Facing the tight schedule, heavy tasks and new technology, the staff of the construction company, under the leadership of Liang Yi, the deputy general manager of the group company and the project manager of the Beijing-Tianjin inter-city railway project, and the party secretary Zhang Fengming, rely on technological innovation and hard work. The first pier of the whole line was erected, the first 900-ton box girder was erected, and the first ballastless track plate was produced... In the history of China's railway passenger line construction, many firsts were created, which was praised as “Beijing-Tianjin Cityâ€. The leader of the railway construction was awarded the "locomotive" trophy issued by the All-China Railway General Union.
The Beijing-Tianjin inter-city railway adopts a plate type ballastless track structure. The production and laying technology of ballastless track plates developed by China Railway 17th Bureau Group has created a precedent for the production of high-precision railway ballastless track plates in China. In the process of research and development, they did not follow the trend of others, but dared to break through, boldly innovate, the materials and machinery used in the production of track boards, the localization rate reached 98%.
The Beijing-Tianjin intercity railway has a design life of 100 years, and the durability of concrete is the key. In order to solve this technical problem, the testers consulted a large number of relevant materials at home and abroad. After more than three months, after hundreds of field tests, the successful selection of high-performance concrete mix ratios, the asphalt they developed Cement mortar, reported to the national invention patent.
Beijing-Tianjin inter-city railway construction requires a variety of large-scale special equipment, with new technology, high cost and large investment. The Group has invested hundreds of millions of yuan and actively cooperated with research institutes and manufacturers to successfully develop and manufacture more than ten kinds of special machinery and equipment for railway passenger dedicated line construction. Most of these specialized devices have 100% intellectual property and patents.
18 new technologies were born in the Beijing-Tianjin inter-city railway construction
The China Railway 17th Bureau Group implemented the strategy of developing enterprises through science and technology, and developed 18 new technologies such as the production and laying of 900-ton box-beam racks and ballastless track plates in the construction of Beijing-Tianjin intercity railways; 9 of them declared national patents. It fills the gap in the construction technology of China's railway passenger dedicated line and is at the leading level in the same industry at home and abroad.