8..5. fixation. In the process of pouring, the anchor plate is easy to loose 1 shift. Therefore, the screws must be fixed on the head template o8.6. positioning. The positioning of the corrugated pipe should be based on the bottom of the corrugated pipe, according to the curve coordinates of the prestressing tendon in the design.8.7. welding. In the process of pouring the bellows lands will be produced in the floating phenomenon, therefore, the bellows in place, can be tied to a "n" type in steel pipe, welded steel bracket and firmly, spacing is generally 60 cm, bracket welding in the stirrups, stirrup below advance real pad o
In the construction, the construction quality of the corrugated pipe is good or bad, how to ensure the construction quality of the bellows? The main management measures are as follows:8.1. inventory. Bellows transported to the construction site, to enter the warehouse room stacked with the lower part of the board pad high, not rain, prevent rust o8.2. examination. Before the installation of corrugated pipe, to check the appearance to prevent deformation, there are trachoma bellows installed inside the o8.3. seal. The joint of the two bellows joints, to ensure that the length of the joint is not less than 30 cm, the distance between the two ends of the same, sealed with sealing tape joints to prevent leakage of slurry o
8.4. plugged. The corrugated pipe is connected with the embedded steel plate, pipe and horn anchor plate hole is not less than 5 cm, corrugated pipe and anchor plate around with sponge tightly, prevent the cement mortar into the anchor plate in o
