Length and width of dimension deviation in the mould of corrugated pipe culvert I-shaped wall foundation

The diameter range of the corrugated pipe is φ .5m ~ φ 8m, and the thickness of the pipe wall is 3mm～7mm, which can meet the needs of filling with a thickness of .5m～4m.

Steel corrugated culvert pipes are round, oval, semi-circular, etc., and the inlet and outlet can also be made into oblique mouths according to the proportion of slopes. Steel corrugated culvert pipes are high-quality highway building materials to replace circular tube culverts, slab culverts, arch culverts and small bridges.

this product has the characteristics of short construction period, light weight, convenient installation, good durability, low engineering cost, strong anti-deformation ability, and reduced maintenance cost after opening to traffic, etc. It is especially used in extremely cold frozen soil areas and soft soil subgrade areas, and has obvious economic benefits.

Development history of steel corrugated culvert pipe at home and abroad:

In p>1896, the United States took the lead in the feasibility study of steel corrugated culvert pipe and steel corrugated culvert pipe.

In p>1923, the American Railway Engineering Association applied the steel corrugated pipe channel to the central railway in Illinois for physical test.

in p>1929, the first steel corrugated pipe in Canada was used in a coal mine.

in p>1931, Australia built an 8-meter car passage for the first time.

In p>199, the Japanese Highway Design Code formulated the technical specification for the design of steel bellows. With the installation and use of steel bellows all over the world, it has been proved that this structure is universal in various use situations, and its service life has exceeded the design life.

metal corrugated pipe culvert has been widely used in highway construction in Hebei, Inner Mongolia, Qinghai, Ningxia, Xinjiang, Tibet and other provinces and cities since 21 through market development in recent years.

Application of steel corrugated culvert in Fanwu Line:

The section from Xiliu to Rucun, which was built by Fanwu Line Construction Project Department of Provincial Highway, is located in Daixian County, Fanshi County and Wutai County, and there are quite rich iron ore resources along the line, with more than 7 large and small iron ore mines and magnetic separation plants, and more than 2,5 vehicles hauling iron ore and mineral powder to and from this section every day (the tonnage of each bicycle is 7 tons).

In p>25, steel corrugated pipe culverts were used in K2+987 and K21+15 of the Fifth Railway Line. The length of the culvert is 9 meters, the hole is in the form of a figure of eight, the aperture is 1 meter, the wall thickness is 3MM, the foundation cushion is 15CM cement stabilized gravel, and the compaction degree is not less than 95%, and the filling height is 6CM. The quality guarantee period of this product is 5 years, and the construction cost of steel corrugated pipe culvert with a diameter of 1 meter is 2328 yuan/linear meter.