Corrugated culvert, also known as metal corrugated culvert or steel corrugated culvert, refers to the threaded bellows laid in the culvert under the road and railway. It is a circular bellows made of corrugated metal sheet rolls or made of semi-circular corrugated steel sheets. It is widely used in the culvert (pipe) of roads, railways, Bridges, channels, retaining walls and various mining sites, roadway retaining walls and other projects.

Corrugated culvert

Compared with reinforced concrete pipe culvert, corrugated pipe culvert has the advantages of thin pipe section, light weight, easy transportation and storage, simple construction technology, fast assembly and short construction period.

When building the corrugated pipe, it can be assembled into any length as needed, and if necessary, the pipe section can also be dismantled and moved to other places to build, and the advantages of the corrugated pipe culvert are more significant in areas lacking sand and stone materials or areas with low foundation bearing capacity.

Advantages of corrugated culvert pipe

(1) Culverts, corrugated culverts, steel corrugated culverts, metal corrugated culverts have strong ability to adapt to foundation deformation, lower requirements for foundation bearing capacity and flatness, and the actual cost of the project is similar or lower than that of similar span Bridges and culverts.

(2) The short construction period is the most obvious advantage, and civil engineering and pipe installation can be implemented separately.

(3) Centralized factory production, production is not affected by the environment, which is beneficial to reduce costs and control quality.

(4) Culverts, corrugated culverts, steel corrugated culverts, metal corrugated culverts are easy to install on site, and do not need to use large equipment.

(5) To solve the problem of damage to the concrete structure of Bridges and culverts in cold areas in the north (frost).

(6) Reduce or fundamentally abandon the use of conventional building materials, such as cement, yellow sand, stone, wood, environmental protection is far-reaching.

(7) Culvert, corrugated culvert, steel corrugated culvert, metal corrugated culvert structure stress is reasonable, uniform load distribution, and has a certain ability to resist deformation.

(8) Culvert, corrugated culvert, steel corrugated culvert, metal corrugated culvert adopts standardized design, simple production and design, and short production cycle.

(9) Corrugated culvert pipe is conducive to improving the “wrong platform” phenomenon at the junction of soft soil foundation structure and embankment, improving the comfort and safety of driving, and reducing the cost of post-work operation and maintenance

Characteristics of corrugated culvert pipe

(1) High strength, due to its unique corrugated structure makes it more than 15 times greater than the compressive strength of the same caliber cement pipe.

The weight of the corrugated culvert is only 1/10 to 1/5 of the cement pipe of the same caliber, even if there is no transportation equipment in a narrow place, it can be transported manually.

(3) Long service life, steel corrugated culvert is the use of hot dip galvanized steel pipe, so the service life is long, the life is 80-100 years, when used in a particularly corrosive environment, the use of the internal and external surface of the drained layer of steel corrugated pipe, can be increased on the basis of the original service life of about 20 years or more.

④ Convenient construction: corrugated pipe culvert is connected by sleeve or flange, and can be customized according to the need of length, even unskilled workers can also operate, construction with a small amount of manual operation, can be completed in a short time, both fast and convenient.

⑤ Excellent economy: the connection is simple and can shorten the construction period.

Classification of corrugated culvert pipe

1. Classification by assembly method
   ① Complete corrugated culvert
   ② Assemble corrugated culvert
2. Sort by shape

① Round ② oval ③ arch

3, according to the connection type

① Inner flange connection ② Outer flange connection ③ plate lap connection ④ clamp connection

4, according to the processing method classification

① The steel strip is rolled into a circle of spiral crimping and welding

② Bite forming spiral steel pipe

③ Pipe pressing corrugated two-step bellows