The corrugated steel composite pipe gallery calls for "pipe gallery" revolution

As an important project of people's livelihood, the construction of urban comprehensive pipe gallery in China has developed rapidly in recent years.To meet the opportunities and challenges, the corrugated steel composite pipe gallery calls for the "pipe gallery" revolution.

Compared with traditional reinforced concrete structure, corrugated steel structure composite pipe gallery has incomparable advantages, such as short construction period, light structure weight, light weight, low comprehensive cost, rapid construction without seasonal restrictions, can adapt to different geological characteristics.Therefore, it has great application potential and broad market space.

Advantages of corrugated steel composite pipe gallery:

1. Short construction period

Corrugated steel structure pipe gallery is integral corrugated steel pipe (pipe diameter <3m) or assembled corrugated steel plate, the material is processed and produced in the factory, assembled on site, the construction speed is fast, compared with the traditional concrete structure cast-in-place pipe gallery construction cycle can save more than 30%.

2. Price advantage

The corrugated steel structure is a thin steel shell with simple structure and low cost.Taking the reinforced concrete pipe corridor of 4x3.5m as an example, its civil construction cost is about 80 million yuan per km, while the use of a 4.5m corrugated steel structure round pipe instead, its civil construction cost is about 60 to 70 million yuan per km, its use function can completely meet the demand.Compared with traditional concrete structure, it has obvious advantages in cost.

3. Strong adaptability

The reinforced concrete structure is prone to crack and other diseases when the foundation is subjected to uneven settlement deformation, while the corrugated steel structure has the ability to adapt to the foundation and foundation deformation, so as to avoid the structural damage caused by uneven settlement of foundation.

4. Standard environmental protection

Corrugated steel structure adopts factory standardized design and production, simple structure and easy quality control.Corrugated steel structure reduces the amount of cement, gravel, sand and other natural materials, protecting the environment, low carbon environmental protection.

Disadvantages of corrugated steel composite pipe gallery:

1, can not prevent leakage

Corrugated steel structure assembled plate with plate lap, fastening bolt connections, of bolt joint under the sheets can't avoid the existence of the gap, although currently adopted in highway engineering application clip asbestos pad, waterproof processing measures, such as weather resistance rubber sealing hole still cannot very good solve the problem of leakage, there is no guarantee that the durability of the waterproof effect.

2. Interface is the difficulty

The section of corrugated steel structure is mainly circular, pipe arch, oval and horseshoe, which leads to the complex design and processing of the interface between the main pipe gallery and the branch pipe gallery.

According to the calculation of relevant institutions, according to the current general urban composite pipe gallery design layout, such as the use of steel structure corrugated pipe composite pipe gallery, each kilometer consumption of steel nearly 4000 tons, to the general urban initial planning not less than 50 kilometers as a reference data, only about 200,000 tons of steel consumption corridor construction.This data for resolving China's steel industry capacity pressure, has a very big attraction.

Any technology will have advantages and disadvantages, play to the strengths, face the short board, targeted to solve the corrugated steel structure composite pipe gallery in the application of the defects, China's urban composite pipe gallery construction or will really usher in a "pipe gallery" revolution.