The characteristics of the construction method and scope of use of steel corrugated culverts

Steel corrugated culverts are a type of culvert formed by connecting and assembling corrugated tubes or corrugated plates. For highway culverts, uneven settlement of culverts is one of the main forms of their destruction. Steel corrugated culverts have the characteristics of light weight, convenient and quick installation, good durability, low engineering cost, strong anti-deformation ability, and reduced maintenance costs after opening to traffic. From the analysis of the essential relationship between materials, structures and functions, the use of flexible and high-strength steel corrugated culverts not only has the ability to adapt to the deformation of the foundation and foundation, but also can solve the problem of culvert damage caused by uneven settlement of the foundation. In addition, the steel corrugated culverts have excellent force characteristics due to the existence of axial corrugations. The stress and strain caused by the load are distributed axially and radially at the same time, which can disperse the stress concentration of the load to a greater extent and better play the advantages of steel structures. Especially in areas such as high-cold frozen soil, soft soil, expansive soil, and collapsible loess, it has obvious economic benefits.

1. This method is simple to operate, no large equipment is required on site, and the assembly method is fast and can effectively shorten the construction period.

2. The piece-by-piece assembly technology is adopted, which is not only convenient for loading and unloading and transportation of steel corrugated culverts, but also easy to control during on-site construction.

3. It eliminates the processes of concrete pouring and steel bar welding, which has less noise pollution to the surrounding area, and abandons conventional building materials such as cement, sand, gravel, wood, etc., which has far-reaching environmental significance.

4. The pipe section connection adopts flexible docking clamp connection, which avoids the shortcomings of traditional flange rigid connection, not only saves a large number of connecting bolts, but also makes installation and disassembly, and pipe body adjustment easier and faster.

5. When the steel corrugated culvert is backfilled, the compaction method of the "wedge area" is to use square wooden sticks for initial tamping and then use small machines to tamp obliquely to ensure the quality of backfill compaction.

Scope of use, process principle

This method is suitable for culverts or passages with a diameter of more than 2.0m and less than or equal to 6m in culverts of various grades of highways. The culvert construction is based on the "thin shell" force theory of the steel corrugated culvert structure. Due to the existence of axial corrugations, the stress and strain caused by the load are distributed axially and radially at the same time, which can disperse the stress concentration of the load to a greater extent, give full play to the advantages of the steel corrugated culvert structure, and adapt to foundation deformation.