The Structural Characteristics Of Steel Truss Bridges

A steel truss bridge is a structural system that lies between beams and arches, consisting of a curved beam structure in the upper part and a pressure bearing column in the lower part as a whole. This structural system, due to the rigid connection between beams and columns, allows the beams to be unloaded due to the bending stiffness of the columns. The entire system belongs to a compression bending structure and has thrust.
The structural characteristics of steel truss bridges mainly include:
Simple structure: Its structural form is simple, easy to manufacture, install, and maintain.
Large span: Steel truss bridges can achieve large spans, with a span of several hundred meters, making them an important structural form for large highways and railways.
Strong load-bearing capacity: The design and manufacturing of steel trusses meet the requirements of strong load-bearing capacity and light weight, and can withstand high-strength loads.
Steel truss bridges have been applied as early as the 19th century due to their excellent stiffness and load-bearing capacity. For example, H. Gerber of Germany had already built a statically indeterminate cantilever truss bridge in 1867, while Britain used this form to build the unprecedented span of the Forth Bay Railway Bridge between 1880 and 1890.
In addition, steel truss bridges are not only used in bridge engineering, such as arch bridges, cable-stayed bridges, etc., but also widely used in construction engineering, industrial construction, and landscape engineering. In construction engineering, it can serve as a load-bearing structure for large sports venues, exhibition centers, stations, and other buildings; In industrial buildings, it can be used for load-bearing structures such as large factories and warehouses; In landscape engineering, it can be used for the design of landscape buildings such as landscape bridges and columns.
With the development of technology, the form of steel truss bridges is also constantly innovating. For example, a steel truss concrete composite beam bridge is a new type of composite structure that allows the steel truss and concrete bridge deck to jointly bear forces, and can fully utilize the stress characteristics of steel and concrete materials.