Material Selection Of Cable Bridge

The material of cable bridge is another common problem in the engineering design of cable bridge. According to the material division, the cable bridge mainly has steel, glass fiber reinforced plastic and aluminum alloy. Glass fiber reinforced plastic cable bridge is characterized by light weight, the specific gravity is only 1/4 of carbon steel; Good water resistance and corrosion resistance, suitable for chemical plants. The oxygen index of non-combustible, non-combustible glass fiber reinforced plastic cable bridge is ≥32. The service life is long, the general design life is 20 years, but the price is 3 times that of the steel cable bridge. The advantage of the construction is that the cutting is convenient, the assembly is flexible, and the installation does not require fire, which is especially significant for the chemical plant project in the explosive dangerous environment and the construction period is tight, because in the explosive dangerous environment, the chemical plant must be stopped when the project is installed, and the economic benefits will be affected. The weight of aluminum alloy cable bridge is also very light, because the specific gravity of aluminum and steel is different (Al=2.7, Fe=7.86), by weight, the ratio of aluminum to steel is about 1:3. The dimensions and load characteristics of aluminum alloy cable bridge are basically similar to those of steel bridge. In terms of cost, the cost of aluminum alloy bridge is 20% higher than that of galvanized steel cable bridge, and the service life is more than 5 times that of steel cable bridge.