Construction of Guang-Gan-expressway —— Design Standard
It is 56 kilometers long.
Mountainous hills are designed according to expressway standard, which is a fully enclosed four-lane expressway with full interchange asphalt concrete pavement.
The designed driving speed is 80km/h, and the subgrade width is 24.5m m.
The bridge-tunnel ratio is as high as 80%, and there are 7 extra-long tunnels with a total length of 24.02 kilometers. There are 62 bridges and 3 interchanges, with a total length of 20.23 kilometers.
The Construction of expressway in Guanggan —— Significance
National expressway Network Blue Ocean expressway (Lanhai) is a part of expressway.
Sichuan northbound exports to Sichuan (to Gansu) Expressway.
Other cases
Guanggan expressway started construction.
On June 5438+February 3 1 day, 2008, the groundbreaking ceremony for the construction of Lanzhou-Haikou-Guangyuan expressway was held in Baolun Town, Lizhou District.
Guanggan expressway is a section of G75 Blue Ocean expressway (from Lanzhou to Haikou), which is one of the longitudinal lines of the National expressway Network. It starts from Jiangjunshi Highway Tunnel in Gansu, passes Jiangjunshi at the junction of Sichuan and Gansu, passes through Shenjiashan in the south, reaches Mengzigou, Muyu Town, Ma Chang Township and Guanyindian Township in Qingchuan County of Guangyuan City in the west, passes through Zhaojiayan, crosses Tangjiahe, Chuanhuachang and Baolun Town in Yan Jia, crosses baoji-chengdu railway and 108 National Road, and then crosses Qingjiang to Luojiagou, connecting Mianguang Expressway and Guangyuan to.
The Guangzhou-Jiangxi-expressway line is built according to the four-lane expressway standard, with a design speed of 80km/h and a subgrade width of 24.5m. There are two rest areas and two interchanges along the line. The construction period is four years. Guanggan expressway passes through Longmenshan fault zone, one of the three active fault zones in Sichuan. The project is arduous and the proportion of bridges and tunnels is large. Among them, bridges account for 18.789 km, including 4 extra-large bridges, 50 large bridges and 9 medium bridges, and the longest Qingjiang extra-large bridge reaches1765,438+04.55 m. In addition, there are 12 tunnels along the line, of which the longest Zhaojiayan tunnel is 6300m, and the bridge-tunnel ratio of the whole line is as high as 80%.
Guanggan expressway construction-opening to traffic
After more than three years' construction, Guang-Gan Expressway, as an important expressway in northwest China, will be officially opened to traffic on 201219, and will be open to social vehicles. After expressway is connected, it takes only 3.5 hours to drive from Chengdu to Gansu. At present, Linwu Expressway and Wuguan Expressway in Gansu are still under construction. After the two expressway trains are opened to traffic, it only takes about 10 hour for Chengdu to drive directly to Lanzhou.
Guanggan-expressway is an important section of the national expressway network from Lanzhou to Haikou-expressway, and it is one of the main passages in the western region of the country, running through the southwest and northwest, entering and leaving Sichuan and expressway. After nearly four years of construction, the Guangzhou-Jiangxi Expressway has finally been completed, and will be announced to be open to traffic on June 5438+09, opening to social vehicles.
The above is the introduction of the construction network to the construction of Guangzhou-Jiangxi Expressway. For more information about expressway, please pay attention to the architectural knowledge column of Zhong Da Consulting.
For more information about bid writing and improving the winning rate, click on the bottom customer service for free consultation.