Advantages And Disadvantages Of Steel Box Girder

Steel box girder, also known as steel plate box girder, is a common structural form of long-span bridges. Generally used on bridges with large spans, it is called steel box girder because it looks like a box.

What are the advantages of steel box girder?

◆High tensile strength, high elastic modulus, high material utilization efficiency, can effectively exert the bearing capacity of the steel plate, and there are no redundant components.

◆Small self-weight of the structure, suitable for long-span bridges. At the same time, due to the reduced self-weight of the upper structure, the cost of the lower structure of the bridge will also be reduced.

◆Factory made on-site installation, reducing the number of site connections, easy to ensure quality, and high reliability. The construction of the factory is separated from the construction of other structures on the site. There is no need to increase the site, and it can be installed immediately, saving construction costs and shortening the construction period.

◆Construction is fast and convenient. It is a large segment forming unit when it leaves the factory. It can be erected by longitudinal dragging or pushing during construction. It is also convenient for hoisting, which greatly improves the erection efficiency. The construction without brackets ensures smooth flow and barrier-free crossing of railways, highways, urban intersections, etc. Give full play to the advanced construction technology and equipment efficiency of bridges, and the construction is safer