Key words of Daxing New Airport Expressway： safety, wisdom and modernization.
Cctv news(Reporter Liu Wei): The Beijing Daxing International Airport Expressway, with a total length of about 27 kilometers, is an important part of the "five vertical and two horizontal" comprehensive traffic trunk road network outside Beijing Daxing International Airport, and it is also a new bridge connecting the world. It is known as "the first road in the country".
(Photography Liu Wei)
On August 5th, an interview group of the network theme activity "Together with each other in five years" came here to visit. During the introduction of Zhang Yanduo, assistant general manager of Beijing Investment Transportation Company, the reporter caught several key words of this high-level expressway.
Safety: The freezing point of the snow-melting pavement drops to minus 12 degrees.
(Photo courtesy of Beijing Municipal Transportation Commission)
It is understood that in order to ensure the traffic safety of high-speed vehicles and improve the driving experience, the surface layer of the 23-kilometer bridge of the project is made of snow-melting materials, which can reduce the freezing point of the road surface to about MINUS 12 degrees, effectively improve the impact of snow and ice weather on the highway capacity, and greatly reduce the use of conventional snow-melting materials and reduce the damage to the environment and bridge structure. It is the first time in China to adopt the technology of melting ice and snow pavement in such a large scale in a project.
Wisdom: Intelligent street lamps and active luminous signs are widely used.
(Photography Liu Wei)
According to reports, Daxing Airport Expressway adopts advanced measures such as comprehensive control technology, smart street lamps and active luminous signs. Street lamps can be brightness level by themselves according to the environment; In foggy days, the guide device has a prompt flashing every 20 meters; Traffic sign facilities themselves are light sources, which keep emitting light continuously. Under any conditions, vehicles and pedestrians can easily identify themselves visually and take behavioral measures to further build a travel safety guarantee system.
In the process of project construction, we actively cooperate with relevant scientific research institutions and use a variety of new technologies to build a new model of wisdom and high speed. Provide a fast and convenient access experience by using the mobile Internet charging system; Through the establishment of comprehensive monitoring system, intelligent analysis of big data, simulation deduction and electronic sand table to create a smart management system, and strive to create a safe, comfortable, convenient, fast, efficient and intelligent "new country gate first road."
Modernization: "Three Lines and Four Bridges" Synchronized Rotation Break the Record
(Photo courtesy of Beijing Municipal Transportation Commission)
According to the data, the control project of the project crosses beijing-shanghai railway and crosses the Beijing-Shanghai high-speed railway, and it is constructed synchronously with three projects and four bridges of the track line and Tuanhe Road, and it is successfully completed by using the "skylight point" of railway transportation in 90 minutes in the morning. Make full use of BIM technology in the process of project implementation, generate the whole deduction before turning, accurately calculate and improve the control ability, and greatly reduce the safety risk. The synchronous swivel project of "Three Lines and Four Bridges" led by Beijing Investment Co., Ltd. pioneered the cluster swivel construction of long-span bridges across the railway in China.