Type 321 river crossing bridge, also known as prefabricated steel bridge, is a steel truss bridge widely used in the world. It has the characteristics of simple structure, convenient transportation, few components, light weight, low cost, fast construction, easy disassembly, repeated use, large bearing capacity, large structural rigidity, long fatigue life and so on. It can be composed of various types and various uses of temporary Bridges, emergency Bridges and fixed Bridges according to different spans required by practice.
The original Bailey Bridge was designed by British engineers at the beginning of World War II in 1938. During World War II, military copper Bridges were used extensively. After the war, many countries converted the Bailey steel bridge to civilian use after some improvements. In the past, Bailey steel Bridge played an irreplaceable role in the establishment of traffic and flood relief.
In China, prefabricated steel Bridges have been greatly developed and finalized for consumption in 1965. Today, in addition to being a steel bridge for combat readiness, the 321 cross-river Bailey Bridge has been widely used in rescue and disaster relief. Communication engineering, municipal water conservancy engineering, dangerous bridge reinforcement and so on. For example, during the 5.12 earthquake in 2008, there were a large number of 321 cross-river Bailey Bridges for rescue and disaster relief, and 321 cross-river Bailey Bridges played a more critical role in the forward transportation of earthquake relief materials, evacuation of the injured and public evacuation.
Post time: Jun-19-2023