The characteristics of corrugated steel plate

Starting from the requirements of project quality, structural safety, durability, construction period, project cost, environmental protection construction, and compliance with the development of green transportation and environmental protection construction, steel corrugated plates can effectively solve the problem of cold weather caused by concrete structures or masonry structures in alpine regions or permafrost regions. , Large temperature difference, frost heaving and other factors cause common quality problems such as difficult construction, low strength, cracks, deformation, fracture, damage, etc. It can also effectively solve the problems of abutment and culvert settlement and vehicle jumping. Compared with traditional reinforced concrete structures or masonry structures such as masonry, due to its unique advantages, it is very significant in terms of economic, social, and environmental benefits. The specific advantages are as follows:
(1) High strength and light structure.
The steel has high strength, small structure size and light weight. The Corrugated Steel Plate is only 4%~22% of the weight of the reinforced concrete structure, which brings great convenience to the construction, and can be installed with a small lifting machine. At the same time, transshipment and handling costs are also greatly reduced.
(2) Good mechanical performance.
The corrugated Steel Plate can give full play to the characteristics of high tensile strength and strong deformation resistance of steel. The compression and tensile properties of steel are basically the same, the isotropy is basically the same, and the requirements for the foundation are low. It can meet soft upper soil, collapsible loess, Unfavorable geological conditions such as permafrost, high fill, goaf and earthquake-prone areas have special requirements for structural deformation due to uniform settlement. Compared with masonry materials, the tensile strength of steel is particularly excellent, and there is basically no cracking problem under load. At the same time, the steel corrugated plate structure has little disturbance to the foundation and thermal disturbance to the soil layer, which is especially suitable for projects in alpine regions and frozen soil regions.
(3) Good durability.
A large number of engineering examples show that the service life of Galvanized Steel corrugated plates (pipes) is 50 to 100 years or more. At present, there are still structures with more than 100 years in use. Film coating technology or plastic coating technology can significantly improve its durability. For conventional civil engineering, its service life can fully meet the requirements.
(4) Good seismic performance.
The steel corrugated plate structure is light in weight, relying on the flexibility of the structure and the interaction between the soil and the structure, it can effectively reduce the damage to the structure caused by the earthquake. When used in highway bridge and culvert structures, it is beneficial to improve the "staggered platform" phenomenon at the junction of bridges and culverts on soft soil foundations and embankments, and improve driving comfort and safety.
(5) High production efficiency and short cycle time.
Factory processing and on-site construction preparation are carried out at the same time, which greatly shortens the construction period by more than 50%, and is not affected by temperature and environment, prolonging the construction period. The steel corrugated plate structure is usually processed and manufactured in a professional factory to form pipe joints, plates or plates. The production process is not affected by the environment, and can ensure processing accuracy and quality, reduce costs, and greatly reduce the labor input on site.
(6) Transportation and installation are more convenient and safe
The self-weight of the steel corrugated plate structure is only 4%~20% of the reinforced concrete structure under the same conditions, and each piece or section is only 50~800kg, and there is no need for large hoisting equipment for hoisting. The overall corrugated steel pipe can be divided into segmented round pipe sets, sliced steel corrugated plates, and plates are transported by stacking and bundling. Since the installation process of the corrugated steel plate structure is a simple bolting and positioning process, construction personnel do not need special training to operate.
(7) Diversified products and wide application range.
Making full use of the reprocessable characteristics of steel, different wall friction, wave (wave distance x wave height) dimensions and structural designs can be used to produce products of different shapes to meet different functions and requirements. At the same time, structures such as bends and bifurcations can be made through elbows, tees, etc., to adapt to different linear requirements of ditches, and to adapt to or meet different strength or stiffness requirements and use functions.
(8) Low carbon and environmental protection.
A large amount of steel production capacity resources can be used, and the conventional building materials, such as cement, sandstone mining, formwork, steel bars, wood, etc., can be greatly reduced or reduced, and construction waste will not be generated, which is conducive to environmental protection.
(9) Quality defects are easy to handle and easy to repair.
The plates with quality defects can be strengthened by measures such as direct new installation and bushing. After construction (operating stage), there are few diseases and low maintenance costs.
(10) Assembled construction, simple process, convenient and quick.
There is no need to use large-scale machinery and equipment, which can reduce a lot of construction work labor (manual operation) and machinery and equipment. Compared with the traditional reinforced concrete structure or masonry structure, the steel corrugated plate structure adopts semi-finished on-site assembly construction, the construction speed is fast and simple, and the construction period can be greatly shortened. The construction period can be shortened by more than 50%, which is especially beneficial for emergency rescue and disaster relief.
(11) The project cost is low.
The steel corrugated plate structure has strong deformation adaptability and small self-weight. Compared with the reinforced concrete structure with the same span, the cost of foundation engineering can be simplified from the design. Using steel corrugated pipes, simple treatment of the foundation, and using a flexible gravel cushion as the foundation can meet the use requirements of the culvert, and the construction period and cost can be greatly reduced. Engineering examples show that the cost of steel corrugated plate (tube) and its composite structure arch bridge is 5% to 30% lower than other reinforced concrete or masonry bridges and culverts with the same span, especially under adverse geological conditions, it greatly reduces the cost of foundation treatment and is economical The benefits are even more impressive. Steel corrugated plates are used in bridge engineering and can be directly connected to embankments of different heights. By using tunnels and subgrade excavation and dregs to fill embankments, the length of bridges can be greatly shortened, and bridge abutments are eliminated, which avoids the common quality problems of bridge head jumping and reduces A large amount of land is temporarily occupied, which greatly saves the cost and reduces the impact on environmental protection.