The preparation work of assembly corrugated pipe culverts,Inspect the flatness of the foundation at the bottom of the pipe culvert, and also inspect the camber, inlet and outlet elevation,Culvert position, central axis, and central position of corrugated pipe culvert.
.Acceptance of corrugated steel sheets before getting in construction site.The size of corrugated steel plate must meet the requirements,
The connecting parts are shear resistance high-strength bolts , and the strength is not less than grade 8.8.
Composed of corrugated plate components, A plate components, B plate, C plate, D plate, Connected in order of head and tail to form a closed shape, and the joints of each plate connection by high strength grade bolts , and to assembly a big diameter corrugated steel pipe. There is rubber sealing strip at the joint of the connection of each two plates.After on circle is finished connection, then to do the longitudinal direction connection of the corrugated pipe culvert, Installing symmetrically from the center to both ends, and the joints of each corrugated plate is fixed by high strength bolts.Concave gasket 8 and Convex gasket 10 are set when connected,
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The specific assembly process is as follows
When splicing corrugated pipes, the plates should be overlapped and connected with high-strength bolts of grade 8.8. Welding is not allowed. The distance from the overlapped part of the plates to the threaded hole should be ≥ 50mm,The steel corrugated plate parts are processed and formed using Q235. During the installation of the pipe body, the pipe segments are connected in a circle before installation. After the overall shape is formed, longitudinal connections are made. During assembly, the bottom plates are assembled first, and then assembled upwards. After the assembly of the circle is completed, the cross-sectional shape is measured and when the requirements are met , then do the next assembly of the corrugated pipe plates.
The upper plate of the overlapping part covers the lower plate, and the circumferential connection adopts a stepped shape. During the assembly process, the plate joints must be staggered.
In order to accelerate the assembly speed, a design is adopted where four plates are horizontally connected into a ring. After the pipe sections are assembled in sections, they are moved to the culvert and then docked. Each section of the upper and lower panels should be aligned with the end according to the upper and lower positions, otherwise water will penetrate through the joints and damage the entire pipe culvert system,Insert asbestos pads, lay asbestos pads between two corrugated pipe plates, and then symmetrically tighten the nuts.After the installation of the steel culvert pipe plates, To do a good job in sealing and anti-corrosion work.