Major progress!207 National Highway Xiangyang Section of Hanjiang Extra Bridge 2#Main pier downstream steel coffin successfully completed the foundation concrete construction

At noon on August 3, it lasted 42 hours and 30 minutes. The key control project of the Xiangyang section of the 207 National Highway 207 -Hanjiang Extra Bridge completed 2#main pier downstream steel coffin foundation concrete pouring construction, which marked major progress in the infrastructure of the bridge It provides the operating environment for subsequent construction of the construction.

It is reported that the Hanjiang Extra Bridge 2#Main Dun Chengtai is constructed with double -wall steel cofferdam, and 1 steel coffin is distributed in the upstream and downstream. The downstream steel cofferdam is 31.9 meters long, 31.9 meters wide, 22 meters high, and weighs about 785 tons. After a total of three sections, the overall sinking depth is 12 meters. After the successful sinking on August 1, That is, the construction of the bottom of the bottom steel coffin under the 2#main pier. Take the backbone platform and arrange the catheter, and pour the pouring point in turn. During the process, the thickness of the pouring was measured in real time. A total of about 3,700 cubic meters of concrete was poured. During the construction process, in the face of multiple difficulties such as high temperature and extreme weather and construction period, complex construction environment, and high technical difficulty in the construction of summer, the Xiangyang Highway Construction Maintenance Center strengthened on -site supervision, strictly controlled the quality of the project, strengthened the construction management of safe and civilized construction, and ensured that it was ensured that it was guaranteed. The successful pouring of the primer of the steel coffin has laid a solid foundation for the subsequent construction of the bridge.

The Hanjiang Extra Bridge is located in Niushou Town, Fancheng District, Xiangyang City. In order to protect the Hanjiang ecology and the Hanjiang navigation, the main bridge uses two -hole 330 meters to solicit the cable cable bridge to cross the Hanjiang River, with a total length of 4454 meters, the main bridge is 660 meters long, and the "H" type master is the main main bridge. Tower high 201 meters. After completion, it will be the largest span -free pier combination beam for the largest span.

Source: Xiangyang Highway Construction Maintenance Center

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