Corrugated Steel Pipe Replace Old Arch

At present, with the continuous promotion and development, steel corrugated pipe culverts have been widely used in projects of railway culverts, small bridges, temporary access roads, tunnels, drainage pipelines, highways, and various mine roadway retaining wall supports。

After the start of a certain highway project, due to the tight schedule, according to the original design, 0 8-2,2m stone arch culvert is designed, with a top filling soil of about 18m above it, but if working as the designing of stone arch culvert, the project will be going slow down.and make it difficult to be completed within the specified time frame. Therefore, in order to not extend the construction period and accelerate the progress of the project construction, the owner's department requires a change to the original design plan, replacing it with 0 8-5.2m steel corrugated pipe culvert, and it ensures the quality of construction and accelerates the progress of construction.

The corrugated pipe culvert used in this project is an assembled corrugated pipe. The diameter of corrugated pipe culvert is 4.8m, the length is 100m. the filling height needs to exceed 18 meters. The hot-rolled steel plate q235-A is used for the corrugated pipe joints, and each ring is composed of eight copper plates connected,then longitudinally connected and formed.During the connection process, M20, 9.3 grade high-strength bolts and HRC36 grade arc-shaped washers are used for the bolts. All steel plates must undergo hot dip coating on their surfaces.The thickness of the pipe culvert foundation used is llOcm, and the slope protection and the paving at the east entrance use reinforced concrete pouring at the entrance.2% -4%. Quality control of construction technology for 2-steel corrugated pipe culverts.

After the replacement of the steel corrugated pipe culvert in this project, The construction progress accelerate and be completed earlier. It is earlier finished than the originally designed stone arch culvert, It also provided sufficient construction time for the 18m fill on it, greatly shortening the overall construction period.