Urban road tunnel construction organization design document
The municipal engineering of xxx tunnel and connecting road (xx road) is an important municipal infrastructure project of xx under the new development goal. It is a key section project of the three horizontal lines in the "five horizontal, six vertical, one ring and seven connection" urban expressway system of the overall traffic road network of xx city. It not only shoulders the function of the fast urban arterial road between clusters of xx city, but also serves the new tea garden city, Strengthened the connection between the tea garden and the central CBD in the main urban area and the northern new area; The construction of this project is of great significance to enhance the image of tea gardens, accelerate urban construction, improve the new tea garden city and open the east gate of xx city. The municipal engineering of xxx tunnel and link road (xx road) is a key project of xx city, with a total length of 8.57km. It is an urban expressway. The width of the planned red line is 44m, two-way six lane, and the design speed is 60km/h. The tunnel part is about 5.3km long, which is divided into tunnel 1 and tunnel 2. The left line of tunnel xxx2 is located at mileage stake ZK2+630.955 ～ ZK5+075.955m, The right line is located at mileage stake YK2+581.109~YK5+054.109m, with length of 2445m and 2473m respectively. Contract section D of municipal works of xxx tunnel and link road (xx road) undertaken by xxxx Group Co., Ltd. is the exit section of tunnel xxx2, located in the south bank area of xx city. It adopts two-way six lane, one-way traffic lane is 12 meters wide, and is designed according to the standard of urban expressway. The total length of the single track of the line is 2863m (including the starting and ending mileage of the left track: ZK3+870-ZK5+304; the starting and ending mileage of the right track: YK3+825-YK5+254), and the main works are tunnels and roads. The total length of the single tunnel is 2435.064m (the starting and ending mileage of the left track is ZK3+870 － ZK5+075.955, with a length of 1205.955m; the starting and ending mileage of the right track is YK3+825 － YK5+054.109, with a length of 1229.109m); The total length of the single track of the road is 427.936 meters (the starting and ending mileage of the left track is ZK5+075.955 － ZK5+304, 228.045 meters long; the starting and ending mileage of the right track is YK5+054.109 － YK5+254, 199.891 meters long). Both the left and right lines are in the direction of the entrance, and the design slope rate of the line is -0.45%. The dividing line with contract section C is set at K3+870 of the left line and K3+825 of the right line. The tunnel is designed as a single hole with three lanes, with a net width of 13.75m and a net height of 5m. Jet fans are used for longitudinal ventilation. The headroom area in the tunnel section with inverted arch is 109.08 ㎡, and the headroom area in the tunnel section without inverted arch is 90.12 ㎡.
