Chinanews.com client Baoding, May 15th (Reporter Zhang Xu) The millennium plan, traffic first.
On May 14, the Ministry of Transport held a press conference for the first time on the construction site of the Hebei section of the Jingxiong Expressway.
The reporter learned that as an important part of the "four vertical and three horizontal" expressway network in Xiongan New Area-the construction of the three expressways of Jingxiong, Rongwu New Line, and Jingde Phase I have entered the countdown to opening.
What are the highlights of the highway network in Xiongan New Area, what technologies are used, and what experience will it bring to people?
The reporter will take you one by one to explore.
On May 14, the press conference of the Ministry of Transport.
Photo by Chinanews reporter Zhang Xu
Three highways will be completed and open to traffic
The first phase of the Hebei section of the Jingxiong Expressway includes the main line and the branch line of the northern line of Daxing International Airport, with a total length of 75 kilometers.
Among them, the main line is 69.4 kilometers long, starting from the Beijing-Hebei boundary of Zhuozhou City, passing through Zhuozhou City, Gu'an County, Gaobeidian City, and Baigou New City to the south, ending in Xiong'an New District, connecting with the existing Rongwu Expressway; branch line It is 5.6 kilometers long and starts from the Beijing-Hebei boundary of Zhuozhou City (Yongding River) and connects to the main line through Yihezhuang Town, Zhuozhou City to the west.
Wang Tai, deputy director of the Highway Bureau of the Ministry of Transport, said that up to now, the key road construction projects in the Xiong'an New Area are progressing smoothly, and the backbone of the highway has been speeded up into the network.
"Among them, the Tianjin West Section and Hebei Section of the Tianjin-Shijiazhuang Expressway have been opened to traffic and are operating in good condition; Beijing-Xiong’an Expressway (Hebei Section), Rongcheng-Wuhai Expressway New Line and Beijing-Dezhou Expressway (Phase 1) are expected to be completed by the end of May. Open to traffic; the Beijing-Xiong Expressway (Beijing Section) and other projects are being implemented quickly, and strive to build a section outside the Beijing Sixth Ring Road and the west extension section of the Daxing Airport North Line, which is connected to the branch line of the Jingxiong Expressway, by the end of this year."
High-speed aerial image of Beijing Xiong.
Photo courtesy of Hebei Communications Department
By then, the Jingxiong Expressway will become the most convenient roadway connecting Beijing to the Xiong’an New District, and will form a “four vertical and three horizontal” highways with Beijing to Hong Kong and Macau, Daqing to Guangzhou, Rongwu New Line, Jinshi Expressway, and Jingde Expressway. Expressway network in Anxin District.
Hou Zhimin, deputy director of the Department of Transportation of Hebei Province, said that the Jingxiong Expressway realizes the direct connection between the Xiong'an New Area and the central city of Beijing, the Jingxiong Expressway and Jingde Expressway are directly connected to Daxing International Airport, and the Rongwu Expressway is directly connected to Tianjin Port and Huanghua Port. Connecting, Jinshi Expressway connects Tianjin, Xiong'an New District and Shijiazhuang, realizing 60 minutes to Beijing and Tianjin and 90 minutes to Shijiazhuang.
Jingxiong Expressway will open dedicated lanes for autonomous driving
In terms of smart highway construction, according to the list of responsibilities for the pilot work of building a strong transportation country in Hebei Xiong’an New District, Jingxiong Expressway has undertaken a number of pilot tasks for building a strong transportation country.
Jingxiong Expressway will gradually realize scientific management decision-making, intelligent road network scheduling, refined travel services, and efficient emergency rescue.
Specifically, "Building a dedicated lane for intelligent driving that supports autonomous driving in the inner two lanes, creating an open test area for expressway-oriented safe assisted driving, vehicle-road collaboration and other technology applications", "building a quasi-all-weather fast-passing demonstration road section", and collecting key points The structure of the structure responds to the data, establishes a full-life digital archive, and builds a demonstration section of digital transportation infrastructure.
The Hebei section of Jingxiong Expressway.
Photo by Chinanews reporter Zhang Xu
Driving on the Hebei section of the Jingxiong Expressway, the most prominent feeling is that it is wide and unobstructed.
It is understood that the two-way eight-lane expressway standard is adopted from the starting point of the Jingxiong main line to the interchange section and branch line of the Sizhuang hub, with a width of 42 meters, and the two-way six-lane expressway standard with a width of 34.5 meters is adopted for the interchange to the terminal section of the Sizhuang junction. The design speed is 120 km/h.
The Jingxiong Expressway also reserved speed-up conditions during construction.
According to the design speed of not less than 140 km/h, the horizontal and vertical plane indicators are reserved, and the roadbed is correspondingly widened to ensure that the future speed-up demand of expressways can be met.
More than 3700 smart light poles can be automatically adjusted
At the press conference, the reporter noticed that the light poles standing on both sides of the road seemed unremarkable, but after understanding it, they discovered that they contained mystery.
There is an LED display under the light pole used by Jingxiong Expressway, and there is a camera every few light poles.
The lighting equipment above the light pole is also different, and sensors are installed.
They are all "smart light poles" with multiple scientific and technological functions, and more than 3,700 pieces of them have been installed on the Jingxiong Expressway.
There are more than 3,000 smart light poles on the whole line, which can be automatically adjusted according to the weather and traffic flow.
Photo by Chinanews reporter Zhang Xu
According to the relevant person in charge of the Jingxiong Expressway Construction Office, this smart light pole is based on lighting light poles and integrates new smart devices such as visibility detectors, edge computing equipment, smart dedicated cameras, and road condition detectors. High-precision positioning, high-precision digital maps, variable information signs and vehicle-to-road communication systems can provide services such as vehicle-to-road communications, high-precision navigation, and early warning of confluence areas, with intelligent perception, smart lighting, energy-saving, and multiple-use "Function.
The brightness of the smart light pole can be automatically adjusted according to the weather and traffic conditions.
It can automatically adapt to environmental conditions through sensor technology, recognize data such as ambient light intensity and traffic flow, and determine the lighting mode of lamps.
When the ambient light is bright enough, it can automatically reduce the brightness of the light. When the traffic volume at night is small, the brightness of the lighting is automatically adjusted to an energy-saving state, realizing the effect of "car lights bright and car lights dim" across the board, which can guarantee driving safety. It can also effectively reduce energy consumption.
It is worth mentioning that Jingxiong Expressway is also the first trial of intelligent cluster unmanned construction in China.
Taking part of the road construction section of the Beijing-Xiong Expressway SG2 standard as a pilot, the entire set of unmanned machinery and equipment is used to pave and compact the road water-stable layer.
The concrete compressive strength of Baigou River Bridge is 3-6 times that of ordinary materials
Driving along the Hebei section of the Beijing-Xiong-Xiong Expressway, which is about to open, on the Baigou River, there is also a gateway bridge for Beijing to enter and exit the Xiong'an New District, the Baigou River Bridge.
This bridge (including the approach bridge) is 1,763 meters in length. The main bridge is imitating the 17-hole bridge in the Summer Palace. There are 17 holes in total, each of which is 91 meters in length. The steel consumption reaches 56,000 tons. It is currently the largest in my country. -Style steel box double-arch bridge.
Baigou River Bridge.
Photo courtesy of Hebei Communications Department
Because the bridge is subjected to rolling by vehicles, it needs to be extraordinarily strong and durable.
To this end, the Baigou River Bridge adopts an ultra-high performance concrete (UHPC) material for the deck pavement, which has ultra-high durability and ultra-high mechanical properties, and is a gradation of material particles. The best cement-based composite material is 3-6 times the compressive strength of concrete used in general engineering construction. The bridge structure has excellent anti-blast, anti-corrosion, and anti-wear properties.
In order to maximize the effect of ultra-high performance concrete, the construction team has also developed special paving combined equipment with independent property rights.
First, use a printing-type distributing machine to ensure the uniform level of the ultra-high-performance concrete cloth; then use an automatic leveling machine to vibrate and level to ensure that the flatness requirements are met; then use the laminating equipment for efficient water retention and health to ensure the rapid increase of its strength.
With a total pavement area of more than 60,000 square meters, it has become the largest UHPC pavement area for a single bridge in Asia.
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