Introduction to Steel Bridge

Steel bridge, also known as prefabricated building Bailey bridge, is commonly used interchangeably in many areas, and even equated with steel bridge. Many netizens immediately put the steel bridge on the toolbar. Are they the same? What's the difference?

Strictly speaking, steel bridge is not equal to Bailey bridge. Steel bridge includes steel bridge, and only prefabricated building steel bridge=steel bridge. Steel bridges are defined by the raw materials used for production and processing. The main feature of steel bridges is modularity, and the scope of steel bridges is wider. Literally speaking, most roads and bridges with steel frames as the main body can be called steel bridges. However, steel bridges have a wider range of applications. Relatively speaking, the term 'steel bridge' is closer to its original meaning, and can also be said to describe what a steel bridge is in another practical sense.

The Bailey Bridge is made of high toughness stainless steel plates and consists of lightweight prefabricated components such as standardized frame structure control modules, load-bearing walls, side beams, road control panels, bridge piers, and connectors. It can be quickly assembled into beam bridges with various spans and loads using bent frame structures. During World War II, it was used on many battlefields in Europe, America, and the Far East for repairing roads, highways, and bridges or constructing temporary bridges. After the war, improvements were made.

The interface standard of the steel bridge is different from other bridges. So, what are its characteristics?

The advantages of arc welding and electric welding for steel bridges are that stainless steel plates can be easily used from various directions, angles, and shapes. Generally, there is no need for additional connecting plates to connect the various parts of the angle steel, nor is there a need to drill holes in the stainless steel plate, so it will not weaken the cross-section. Bolt connections can be divided into ordinary bolt connections and high-strength bolt connections. Advantages: Easy and fast installation, especially for installation and connection on construction sites. Disadvantage: During assembly, holes need to be drilled on the parts, which increases the workload of production and processing; The anchor bolt holes weaken the cross-section, and the connecting parts must be connected with steel bars or multi angle steel or assembled connecting plate connectors. Scrap steel should be recycled and reused.

Riveting; Anchor bolts are generally made of universal carbon factory rivet steel ML2 or ML3 with high-quality plastic deformation and upsetting characteristics, and the diameter is taken as the diameter of the anchor bolt. Good plastic deformation, good plasticity and integrity, small connection deformation, reliable force transmission, good fatigue characteristics under load, and good inspection quality. Disadvantages; The structure is complex, requires a large amount of steel, is difficult to construct, produces loud noise when inserting anchor bolts, and has a large standard deviation during operation.

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