German Highway Engineering-Bridges and Tunnels
I. Bridges
1. Xiaohe Bridge
Xiaohe Bridge along Yande Expressway is located at the junction of Shazi Street (formerly Shazi Town) in Yanhe Tujia Autonomous County and xiaohe town in Youyang Tujia and Miao Autonomous County. It is a bridge connecting (He) De (He) Expressway and (He) Youyang Expressway. The total length of the bridge is 6 17m, in which the main bridge is 376m, the main pier 108.086m and the main span 180m.
2. Wujiang Bridge
Wujiang extra-large bridge has a total investment of10.50 billion yuan, a total length of 745 meters, a main span of 180 meters, * *12 piers, a total design height of 108 meters and a width of 210.5 meters. 20 13 completed in September. Wujiang Bridge is the only bridge across Wujiang River along the expressway. Located on the edge of Tujia Autonomous County along the Yangtze River, it is connected with the intersection area along the Yangtze River. Its smooth penetration has an important role in promoting the smooth opening of the expressway along the Yangtze River at the end of the year.
3. Horseshoe River Bridge
The total length of Horseshoe River Bridge is 327.595m, and the main bridge is a reinforced concrete box arch bridge. The whole arch box is constructed in 29 sections, including cast-in-place section of each bank arch foot 1 section, vault closure section 1 section, and the remaining 26 sections are constructed by hanging basket cantilever casting method. Horseshoe River Extra Large Bridge is a hanging basket cantilever arch bridge with a net span of 180m, which is the fourth arch bridge of the same type in China and the second and first span among similar bridges on expressways. Bridge construction is difficult and there are many technological innovations. It is also the first time to build a similar bridge in China Communications Group.
4. Guanlin Bridge
Guanlin Extra Large Bridge is 2148m long, with a separated structure, the highest pier is 78m, and the main bridge is a prestressed concrete continuous rigid frame bridge with variable cross-section of (70+ 130+70) m, which is the largest continuous rigid frame bridge along the German expressway.
Tunnels-Highway Projects along Germany
1. daping tunnel
2. Zhangjiazhai Tunnel
Zhangjiazhai Tunnel is a key control project along the German expressway. It adopts a four-lane separated structure design, with a right width of 204 1m and a left width of 2,039m m. The design speed is 80 km/h. The maximum buried depth of the tunnel is 320 meters. The cofferdam level of the whole tunnel is above Grade IV, and the geological structure is extremely complicated.
3. Aiba Tunnel
Alba Tunnel is the early starting point of the expressway along Germany, and its construction has been highly concerned by the Guizhou Provincial Communications Department and the local government. The tunnel was officially started on February 8, 20 12, and officially entered the tunnel on March 6, 20 13. The tunnel is a separated double tunnel with a total length of 2407 meters. The length of the right tunnel is1.202m, the maximum section is1.654.38+0m2, and the maximum buried depth is1.42m.. The tunnel passes through the argillaceous siltstone coverage area, and the rock mass is broken, so the construction is difficult, especially the exit section has a large amount of water seepage and high safety risk. The project department of the third bid section of Hu Axiang Company takes the safety and quality of tunnel construction as the top priority, formulates a detailed and thorough construction scheme, and invites tunnel experts and design units to optimize and adjust the construction scheme on site many times during the construction. Careful organization and scientific construction, in accordance with the construction policy of "short footage, weak blasting, strong support and diligent measurement", overcome many difficulties such as poor surrounding rock, many faults, frequent changes in surrounding rock structure, serious bias at tunnel exit, large water seepage and so on, ensure the engineering quality and ensure the smooth penetration of the tunnel.
The safe penetration of the right tunnel of Aiba Tunnel relieves the pressure of the construction access road, shortens the delay time of the transportation of construction materials on the road, greatly improves the work efficiency and ensures the smooth completion of the whole line.
The above is the introduction of CBI Zhong Da Consulting to the expressway projects along Germany. For more information about expressways, please pay attention to the architectural knowledge column of Zhong Da Consulting.
For more exclusive information about the construction industry, please pay attention to the micro-signal of the construction network in real time.
For more information about bid writing and improving the winning rate, click on the bottom customer service for free consultation.