Chongqing section of Yu-Rong Expressway started construction on 20 10, and was officially opened to traffic on February 25, 20 13.
Chongqing-Chengdu expressway Sichuan Section started construction in 2009. According to the portal website of Sichuan Provincial People's Government (201May), due to the break of investors' capital chain, the Sichuan section of Chongqing-Chengdu Expressway has been completely shut down. 2065438+200665438+1October 26th, Sichuan section was re-tendered. Resume work in July of the same year; In August, the portal website of Sichuan Provincial People's Government reported that the Sichuan section would be completed on 20 16.
Major project
The total length of the left line and the right line of Yunwushan Tunnel is 3,360 meters, with a clear width of 15.25 meters. It's a separate two-lane three-lane tunnel. The tunnel passes through three fault zones, where karst, karst water and clastic rock fissure water are developed, and it passes through coal seams and mined-out areas, accompanied by adverse geological conditions such as gas and coal dust explosion danger. This tunnel is a super-long and high-risk tunnel, and it is a controlling and difficult project for the whole line of Chongqing-Chengdu-expressway.
The tunnel was put into construction on September 10, 16, 20 12, 12 and 12.
Bayueshan tunnel
Expressway Bayueshan Tunnel in Yurong is 6,572 meters long, with broken rocks, dense gas, developed karst and faults. Complicated geological structure and arduous engineering are rare in China highway tunnel construction. It is a controlling project in expressway, Chongqing and Chengdu, and it is also a key and difficult project.
Yurong Expressway Extension Line
The extension line of Yu-Rong Expressway starts from the toll station of Yu-Rong Expressway in the west, passes through Zhongliangshan wellhead tunnel, Dazhulin Jialing River Bridge and Jinzhou Avenue, and ends at Dayun Interchange of Yu-Wu Expressway in the east, with a total length of about 17.9 km. The design standard is to be designed according to the urban expressway standard, with six lanes in two directions and a design speed of 80 kilometers per hour. The whole project includes a super-large tunnel, a river-crossing bridge and seven interchanges (some of which are reserved by the municipal government). Among them, the section from Yuxi Toll Station to Jinkai Avenue is14.8km long, which is a new project; The total length from Jinkai Avenue to Wuyu expressway is 3. 1 km, which is a widening and reconstruction project. The construction period of the project is about 40 months, and it is planned to be completed and opened to traffic at the end of 20 19. The total investment of the project is about 4.023 billion yuan, and the total investment of reserved interchanges and some auxiliary roads along municipal roads is about 6.242 billion yuan.
Planning programming
Yurong Expressway starts from Chen Jiaqiao Street in Shapingba District of Chongqing in the east, passes through Chongqing Ring Expressway, Bishan District, Tongliang District and Dazu District to the junction of Chongqing and Sichuan, passes through Anyue County, Lezhi County and jianyang city in Sichuan, and reaches xihe town in Longquanyi District of Chengdu in the west, connecting Chengdu Ring Expressway. The total length is 253.564 kilometers.
Chongqing section of Yu-Rong Expressway is 78.56km long, and Sichuan section is 175km long.
Chongqing section of Yu-Rong Expressway started at 20 10, with a total length of 78.6 kilometers, six lanes in both directions (excluding emergency lanes), design speed of 120 km/h, subgrade width of 34.5 meters, bridge-tunnel ratio of 23.8%, and planned investment of 7.86 billion yuan. This project adopts BOT+EPC construction management mode. Chongqing section was opened to traffic on February 25th, 2003. * * There are 8 toll stations, namely Shapingba Main Line Toll Station, Bishan Toll Station, Fulu Toll Station (Bishan), Damiao Toll Station (Tongliang), Dazu East Toll Station, Dazu West Toll Station, Sanjiu Toll Station, Dazu Main Line Toll Station and Vehicle Overpass 8 1.
The Sichuan section of Chongqing-Chengdu Expressway has a total length of175km, and adopts the two-way six-lane expressway standard. Design speed100km, subgrade width 33.5m, estimated investment195.67 million yuan. This project adopts BOT construction management mode. The Sichuan section is scheduled to be completed and opened to traffic before the end of 20 16.
Engineering characteristics
Low carbon high speed
20 1 1 February, the Ministry of Transport listed Chongqing section of expressway in Chongqing as a regional low-carbon construction pilot project. In 20 13, expressway was listed as one of the six "green low-carbon expressway for energy conservation and emission reduction" by the Ministry of Transport.
Chongqing section of Chengdu-Chongqing expressway is the first project in China to adopt BOT+EPC construction management mode, with an estimated budget of 8.56 billion yuan. Among them, EPC general contracting management can realize system integration, resource integration, organic combination of design and construction, and centralized procurement of main materials, so as to save costs and ensure project quality to the maximum extent.
The Chongqing section of Chengdu-Chongqing Expressway uses solar energy to generate electricity, and LED lighting is installed on the whole line. Electricity expenditure can save more than 2 million yuan a year. In addition, the rubber asphalt made of waste tires can consume nearly ten thousand waste tires, saving energy by 40% compared with the traditional process, reducing greenhouse gas emissions by 50% and harmful gas asphalt smoke emissions by 90%. After the completion of all energy-saving projects, Chongqing section of Chengdu-Chongqing Expressway can save 240,000 tons of standard coal every year and reduce carbon dioxide emissions by 6 1 10,000 tons.
Waterless design
Some old expressway often accumulated water or silt in rainy days. The reason is that the ground is higher than the roadway when the isolation belt is designed, and there is no drainage design. After the rain, the rainwater in the isolation belt can't penetrate out. After a long time, a water pool will be formed, and the soil in the isolation belt will be washed to the road surface by the rain, resulting in a serious slippery overtaking lane, which poses a safety hazard. The ground height of Chengdu-Chongqing expressway isolation belt is lower than the road surface, and there is almost no water in the whole section, which is the lowest probability of wet water in Chongqing and even the whole country in expressway.
The above is the introduction of Chengdu-Chongqing expressway design by Zhong Da Consulting Company. If you want to know more about highways, please pay attention to the architectural knowledge column of Zhong Da Consulting.
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