Bailey frame is a steel frame that has formed a certain unit, which can be spliced and assembled into many components and equipment. The length, width and size of Bailey frame are generally 3m×1.5m.
Bailey beam is a truss beam assembled by Bailey frame, which is mostly connected by wool windows and fixed by bolts. Because of its fast erection speed and strong maneuverability, it was mostly used to erect simple bridges on rivers and cliffs in wartime, and now it is mostly used in engineering construction, such as gantry cranes, construction platforms and engineering sidewalk bridges.
Bailey beam is convenient and fast, which provides a prerequisite for the support of many cast-in-place continuous beams across roads and rivers. In the construction of hanging basket and crossing the river on expressway, it can also provide construction access road to increase the speed and convenience of construction.
Extended data:
The scientific name of Bailey beam is "assembled highway steel bridge" or one of the main load-bearing components of "assembled highway steel bridge", and assembled steel bridge has been widely used all over the world.
The original assembled steel bridge was designed by British engineer Donald Bailey at the beginning of World War II in 1938. The main design concept is to assemble the assembled steel bridge with the least kinds of unit members, which can bear all kinds of loads and different spans, only need ordinary medium-sized trucks to transport, and can be built entirely by manpower under special circumstances.
During World War II, prefabricated steel bridges were widely used to repair or erect temporary bridges in the battlefields of Europe and the Far East. 194 1 year, the United States bought a patent from Britain to manufacture assembled steel bridges.
After World War II, many countries introduced assembled steel bridges, and they began to be widely used in civil use. In China, assembled steel bridges have also been greatly developed, and 1965 has been finalized for production. Now it is widely used in national defense preparation, traffic engineering and municipal water conservancy projects.
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