During the construction process, the project team of China Railway 16th Bureau Group overcame the influence of epidemic situation and the interference of rainy season, took precautions and innovated measures. It only took 307 days to complete the construction task with high quality and high efficiency, which laid a solid foundation for athletes to train as scheduled. "The original intention of the base construction is to familiarize the national team athletes with the Xueruyi track of the National Platform Ski Center in Zhangjiakou Division in advance to help prepare for the Beijing Winter Olympics." Zhang Yongfa, the person in charge of the project, said that the design of the track combined with the unique local mountain conditions made the two tracks of Chongli Ski Platform "Snow Ruyi" reappear at the ratio of 1: 1, which was called "Snow Auspicious".
The landing slope of "Xueruyi" ski platform adopts steel-concrete structure and is suspended in the air, while the landing slope of "Xueruyi" ski platform adopts earthwork construction, which is the first case in the world. During the construction process, the builder applied the high-fill filling technology in high-speed rail construction to the alpine skiing platform project for the first time in the world, which strengthened the soil, ensured the stability of earthwork filling and met the design settlement requirements. This paper summarizes the construction technology and intelligent early warning system of ultra-high fill on platform steep slope, and has applied for 2 national invention patents and 3 utility model patents.
The horizontal wind tunnel laboratory that has been put into use is the first special training laboratory for platform skiers in China. It can use the world's most advanced platform skiing training method-wind tunnel test to help athletes improve their technical movements faster and more accurately and improve their sports performance. This wind tunnel is not only the largest ski jumping wind tunnel in the world, but also the most accurate and comprehensive wind tunnel of its kind in the world.
The wind tunnel laboratory is17m high, 40m long and 2 1 m wide. The site is narrow and the construction is extremely difficult. According to the construction sequence of first building and then assembling, first outside and then inside, the project team adopts the method of combining parallel operation, flow operation and cross operation to carry out construction, accurately control the nodes to the day, hour and minute, and ensure timely delivery.
The completion and commissioning of the base will not only provide good support for the pre-competition training of athletes in the Winter Olympics, but also fill a gap in the field of ice and snow sports training and scientific research in China. It will also help Laiyuan to build a world-class ice and snow town, accelerate the deep integration and development of local sports and tourism resources, and become an important engine to promote the high-quality development of the local economy.