On December 19, at the construction site of Yanbao line super major bridge of the project Department of No.
It is an important control project along the whole line.
The column adopts assembly construction, which realizes industrialized production, standardized installation, fine construction and intelligent management.
5 company of CCCC First Highway Bureau in Yancheng section 3 of Jianxing expressway, with the successful pouring of the last barrel of cement grouting material, the construction of fabricated columns in this section was completed, one month ahead of the planned construction period, opening the working face for the next comprehensive construction of capping beam installation, At the same time, it also laid a solid foundation for completing the annual objectives and tasks of the project.
The bridge has 208 fabricated columns.
The connection between fabricated column and bearing platform adopts grouting sleeve, and M60 high-strength non shrinkage mortar is laid.
The prefabricated construction of substructure in Yancheng section of Jianxing expressway is located in Yanbao line super major bridge, with a total length of 4.027 km.
The project department has independently developed a pre embedded positioning jig for the reinforcement of the precast column bearing platform, which accurately controls the embedding error of the embedded reinforcement of the bearing platform within 2mm, and greatly improves the quality and success rate of the one-time installation of the fabricated column.
Compared with the traditional construction mode, it not only has obvious advantages in quality, construction period, environmental protection and civilized construction, but also reduces manual investment and reduces the labor intensity of workers, It improves the work efficiency and provides a new process for the current expressway construction field.
In order to ensure high quality, high standard and high efficiency to complete the construction task of fabricated columns, the Municipal High Commissioner organized and held an expert review meeting on the fabricated construction scheme of Yanbao Baotou line super major bridge to formulate and improve the special construction scheme; The project department has carried out safety technical disclosure for many times, and the construction personnel insist on strictly controlling each construction process according to the design specifications, and infiltrate each requirement of standardized and fine construction into every link of quality, safety, environmental protection and so on; Actively carry out scientific research and innovation.
△ independently researched and developed the embedded reinforcement positioning jig frame for the column cushion cap.
The superstructure of the whole bridge adopts fabricated partially prestressed concrete continuous box girder or simply supported box girder and cantilever cast-in-place variable section continuous box girder.
△ the construction of prefabricated columns in Yancheng section 3 of Jianxing expressway has been completed.
Its construction technology is complex, high precision requirements and difficult safety management.
Contributed by: Yancheng expressway construction headquarters editor: Sun Jiemin reviewed by: sun Haifang..
