Recently, China Railway and China Communications released an announcement that the company jointly obtained 7 construction bids for the civil engineering project from Anjiazui to Linxia, Lintao, Gansu, with a total investment of approximately 3.8 billion yuan.

The Lintao Anjiazui to Linxia Highway civil engineering project is composed of the main line of the route, the Dongxiang connecting line and the Hezheng connecting line. The main line adopts the design of the first-class highway standard. The starting point is located in Anjiazui, Taishi Town, Lintao County, Dingxi City. It is directly connected to the exit of the Anjiazui Interchange of the G75 Lanhai Expressway, and is connected to the G212 line. It ends at Baichuan Village, Dongxiang County, Linxiazhou The planned exit of the Linxia East Interchange on the Yonglin Expressway is connected at a level, and is connected to the planned connection line of the Linxia East Interchange on the Yonglin Expressway. The total length of the main line of this project is 57.072Km. The Dongxiang connecting line is designed with a secondary road standard. The starting point is located in Dabankong Village and the ending point is in Wangjia Village, Suonan Town, Dongxiang County. The total length of the route is 12.109Km. The Hezheng connecting line is designed with a secondary road standard and the starting point is located in the west of Nale Temple. It stops at Gaxinzhuang on the west side of Hezheng County, with a total length of 18.169km.

According to "Technical Standards for Highway Engineering" (JTG B01-2014), the main line of this project adopts the first-class road standard design, and the main line adopts the two-way four-lane first-class road standard with a design speed of 80 km / h and a subgrade width of 22.5m. The Dongxiang connecting line and the Hezheng connecting line adopt the technical standard for secondary roads with a design speed of 60 Km / h (40 Km / h in partially difficult sections), and the roadbed width is 12 meters.

The load grades of bridges are highway-Ⅰ. Design flood frequency: the first-grade highway is a 300-year-old bridge, and the large and medium-sized bridges and small bridges and culverts are 100-year-old ones; the second-level highway is a large- and medium-sized bridge bridge and 100-year-old ones. Earthquake: The peak acceleration of ground motion in this project is 0.15g, which is equivalent to the area of basic earthquake intensity Ⅶ.

The cross section of the tunnel is designed according to "Technical Standards for Highway Engineering" and "Code for Design of Highway Tunnels", and the tunnels are arranged in double holes and two lanes.

The scope of this bidding is the implementation, completion and defect repair of the civil engineering construction of the entire line of the Anlin project, as well as environmental protection and water and soil conservation during the construction process. The division of bidding section and main contents are shown in the table below:

The 21st Bureau of China Railway won the bid for the AL1 bid, the amount of the bid was about 720 million yuan; the 11th Bureau of China Railway won the bid for the AL2 bid, the amount of the bid was about 550 million yuan; the China Communications First Aviation Engineering Bureau won the bid for the AL3 section, the bid was about RMB 490 million; the 16th Bureau of China Railway Group won the bid for the AL4 bid section, the amount of the bid was about 500 million yuan; Hubei Province, Luqiao won the bid AL5 section, the bid amount was about 460 million yuan; Gansu Road and Bridge AL6 bid section, the bid amount was about 570 million Yuan; China Communications Second Highway Engineering Bureau won the bid for the AL7 bid section, the amount of which was about 530 million yuan. Editor / Peng Xue