The designing and Usage Of Corrugated Pipe Culvert

For the steel corrugated pipe culvert used in the highway, starting from the actual example, check the advantages and disadvantages of the corrugated pipe culvert. The total length of a highway route is 54.434km. The whole line is constructed according to the standard of two-way four lane first-class highway, with a design speed of 60km/h and a subgrade width of 20.0m. Considering the importance of the route and the complexity of the geological terrain, the original reinforced concrete arch culvert has been changed to a corrugated pipe culvert. This pipe culvert is a prototype integral pipe, assembled with whole pipe sections and connected with flange bolts. This method is adopted for the culvert in this project, which greatly shortens the construction time of the culvert, ensures the normal construction of the entire line's earthwork, reduces the project cost, and guarantees the construction period.

We can see that the corrugated pipe plate can bearing more loading than normal plane steel plate, it is like a thin shell , looks thin, but the bearing capacity is big, and it has many advantages ,and also can be suitable many environment.The construction of steel corrugated pipe culverts structure is like "thin shell" stress theory of structure. Due to the presence of axial corrugations, the stress and strain caused by loads are distributed simultaneously in both axial and radial directions, which can better disperse the stress concentration of loads, fully utilize the advantages of steel corrugated pipe structures, and adapt to foundation deformation.

Steel corrugated pipe culvert is a type of culvert formed by connecting and assembling corrugated pipes or corrugated plates. It is made of materials steel. For highway culverts, corrugated pipe culverts are a substitute for reinforced concrete circular pipe culverts High quality highway building materials. This product has the advantages of short construction period, light weight, easy installation, good durability, low engineering cost, and resistance to damage,Strong deformation ability and reduced maintenance costs after opening to traffic, frozen soil areas and soft soil subgrade zones,Has significant economic benefits.

The designing of corrugated pipe culvert needs to do the loading capacity analysis when used on project, like Finite Element Analysis,Each waveform, wave height, and wavelength are calculated to meet the best the optimal force and deformation ratio.

The corrugated pipe culvert can be used on highway culvert or ways construction, and the diameter can be 10m culvert, also the small culvert size can 0.8m, there are different culvert waveform and connected form for different diameters, and can be used in different areas, when choose the corrugated pipe culvert, we also need to analysis of the geographic environment.

Preparation for construction: Prior to the construction of the culvert, organize surveying personnel to set out the axis of the culvert according to the design documents, drive the middle edge piles, sprinkle white gray lines on the edge of the culvert foundation range, and measure the original ground elevation. Strictly control the plane dimensions and top elevation of each division.

Basic excavation, using white ash to mark the excavation boundary based on the set out pile positions, and adopting corresponding excavation slope ratios and support methods according to geological conditions. Excavation is carried out using an excavator, and the excavation stops when it reaches a distance of 30cm from the design elevation. Manual excavation and leveling are used to avoid over excavation and disturbance of the foundation soil. Set up drainage ditches around the foundation to prevent the base from being soaked during the rainy season.

For the excavation depth of the foundation pit, the bearing capacity of the foundation, the thickness of the foundation, the laying of the cushion layer, the excavation of the foundation pit, the foundation treatment, drainage and anti-seepage, the material requirements should all be carried out according to the engineering requirements.Before the construction,organize surveying personnel to set out the axis of the culvert according to the design documents, drive the middle edge piles, and lay them on the foundation of the culvert, Sprinkle a white gray line around the edge and measure the original ground elevation. Strictly control the plane dimensions and top elevation of each division.Set up drainage ditches around the foundation to prevent the base from being soaked during the rainy season. For the excavation depth of the foundation pit, the bearing capacity of the foundation, the thickness of the foundation, the laying of the cushion layer, the excavation of the foundation pit, the foundation treatment, drainage and anti-seepage, the material requirements should all be carried out according to the engineering requirements.

Base compaction degree: The base compaction degree should not be less than the adjacent roadbed compaction degree requirement, generally not less than 150kPa.

Another important thing is the The basic material. The base materials should use natural gravel with a certain grading, and the maximum particle size and powder content of the material should be controlled. The maximum particle size should not exceed 50mm and should not exceed 1/2 of the steel plate spacing; The content of powder particles below 0.075mm shall not exceed 3%

So it is not right when many people think the steel corrugated pipe culvert is one kind of simple products, but they don’t know that in fact it is not easy at all, from the designing to construction, we have to follow the calculations and rules, or there will be a big problem. At the construction site, we should also ask professional construction team who has experience to work on the site , and follow the guild of operation.