Yangtze River Daily Wuhan client April 28 news (reporter Hao Tianjiao correspondent Yu Haiyan) April 27, Wuhan intelligent network vehicle test field project extreme racing area, asphalt paver, road roller horsepower, a car asphalt mixture with the vehicle slowly forward evenly spread on the track road, workers according to the mechanical operation in a timely manner with the shovel sprinkling material, the scene heat wave rolling, construction work is in full swing.
In the Wuhan Intelligent Connected Vehicle TestIng Ground project, the F2 international circuit officially began to be paved. Photo by reporter Hao Tianjiao
Wuhan Intelligent Connected Vehicle Test Field Project is located in Wuhan Economic and Technological Development Zone Dongjinghe River, planning land area of about 1313 acres, mainly used for intelligent connected vehicle research and development, testing, certification and other services, is the world's only T5 level test field and F2 level track combined closed test field.
In the Wuhan Intelligent Connected Vehicle TestIng Ground project, the F2 international circuit officially began to be paved. Photo by reporter Hao Tianjiao
"The F2-class international circuit has officially begun to be paved, marking the final stage of the overall construction of the project, and is expected to be fully completed in July this year." Wang Xiaolong, head of the wuhan intelligent networked vehicle test field project of China Construction Second Bureau, said.
Unlike the usual tracks, the track has both straight roads and multiple sharp turning lanes. The reporter stood in the distance and looked out, the whole track twisting and turning, like an abstract painting. Wang Xiaolong explained that the track design and construction requirements are different from conventional highway and municipal engineering, in order to meet the better racing experience of racing enthusiasts, the entire track is not in the same plane, but has high and low undulating, coupled with the cross slope of the track, resulting in the elevation of each point of the entire track is different, and uneven change.
In the Wuhan Intelligent Connected Vehicle TestIng Ground project, the F2 international circuit officially began to be paved. Courtesy of the correspondent
In the Wuhan Intelligent Connected Vehicle TestIng Ground project, the F2 international circuit officially began to be paved. Courtesy of the correspondent
Wang Xiaolong said: "How to achieve the elevation of each point to meet the design requirements, but also to meet the overall flatness requirements, is the biggest problem that the project team has to face. ”
In order to do a good job in the asphalt paving work of the track, the project department specially invited relevant industry experts to hold an expert review meeting, and timely supplemented and improved the asphalt construction plan of the track, providing a rigorous guidance basis and strong guarantee for the safe construction of the project. "We also organized the participating parties to study the Zhuzhou International Circuit, which is also planned and designed in accordance with international secondary track standards." Wang Xiaolong said.
It is understood that the requirements for asphalt mixed raw materials for track paving are also much higher than those of conventional road projects, especially key materials such as asphalt and aggregates. In order to ensure the quality of raw materials, the project department and various units have conducted field visits to key materials many times. After many demonstrations and many experiments, it was finally decided to use asphalt mastear mixture for paving, which increased the fiber amount and oil content of asphalt, the friction coefficient was greater, the strength was greater, and the uneven settlement of the later road surface was avoided to the greatest extent.
"The total length of the track is 4.29 kilometers, a total of 17 curves, the linearity is extremely complex, some areas are three-dimensional curved surfaces, in order to ensure the quality of asphalt surface layer construction, the project department uses 3D paving technology to control the asphalt paving thickness in three dimensions, so as to achieve the required accuracy and flatness." In order to take into account the safety and speed of the track, we also carried out safety and quality to the construction workers in advance, and accurately controlled the appearance, transportation and paving temperature of the asphalt mixture to ensure the overall construction quality. Wang Xiaolong introduced.
It is reported that after the completion of the Wuhan Intelligent Connected Vehicle Test Field project, it will not only fill the gap in the central region of the mainland without an international circuit, but also meet the needs of Wuhan to build a world-renowned "car valley" for "next-generation cars", and help Wuhan metropolis develop from "group structure" to "central axis structure" and leap to the "Yangtze River era".
【Editor: Ji Jie】
For more exciting content, please download the "Greater Wuhan" client in major application markets.