Truss Beam
Truss Beam
Truss girder is an important structural framework specially used for bridge construction. It is a beam bridge with truss as the main load-bearing structure.
- Truss beam is an important structural framework specially used for bridge construction. It is a beam bridge with truss as the main load-bearing structure.
- The rods of steel truss bridge are composed of steel and steel plates. The cross-sections are generally trough-shaped, I-shaped and box-shaped. They are usually formed by riveting or welding. In the early days, riveted rods mostly used plate and strip, but now they are mainly steel and whole plate.
- Most of the welded rods are made of steel plates. Some of the small-span truss beams use steel (flat steel, angle steel) as rods.
- The intersection of truss rods is called a node. The intersecting rods are connected with node plates to form a truss.
- Its connection methods include riveting, bolting or high-strength bolts, welding, etc. (see steel structure connection). In the early days, there was also a pivot connection, which is no longer used. Some military structures also use pin connection.
- It is difficult to ensure the quality of welding under construction site conditions, so rods and other components are mostly welded in the factory, and high-strength bolts are used to connect them on site to build bolted and welded beam bridges. Ordinary bolt connections are mostly used in temporary truss bridges.