Sectional type large-span steel box girder and welding method thereof

Abstract

The invention relates to the building construction field, and provides a sectional type large-span steel box girder and a welding method thereof; the large-span steel box girder comprises a steel box girder top plate, a steel box girder bottom plate, a web and stiffening rib plates; the steel box girder top plate is horizontally arranged; the steel box girder bottom plate is correspondingly arranged below the steel box girder top plate, and bends to the direction of the steel box girder top plate; the web and the stiffening rib plates are welded and fixed between the steel box girder top plate and bottom plate; the large span steel box girder is 30 m in length, and segmented into two sections in the length direction, wherein one section is 17m in length, and the other section is 13m in length; the large span steel box girder with the width bigger than 3.1m is segmented into a plurality of sections in the width direction, and the width of each segmented section is not bigger than 3.1m. When the large span steel box girder is welded and finished, a hollow structure can be formed inside; the sections formed in the length and width directions can greatly reduce the steel box girder body volume and weight; the large span steel box girder is convenient in construction and transportation in the later stage construction, thus greatly reducing construction manpower and material costs.

Description

technical field [0001] The invention belongs to the field of building construction, in particular to a segmented long-span steel box girder and a welding method thereof. Background technique [0002] Bicycle highways refer to urban transport infrastructure dedicated to cycling. It can relieve people's travel pressure, provide people with new travel channels, and is green, environmentally friendly, low-carbon and healthy. [0003] During the construction of bicycle expressways, steel box girders are used as bicycle lanes. Most of the existing steel box girders are mostly used for bridge construction. Their large volume and weight are not convenient for long-distance transportation, and their assembly is relatively complicated. For the lanes only for bicycles, it is a waste of manpower and material resources, and the construction is difficult. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a segmented long-span ...

AI Technical Summary

Problems solved by technology

Most of the existing steel box girders are mostly used for bridge construction. Their large volume and weight are not convenient for long-distance transportation, and their assembly is relatively complicated. For the lanes only for bicycles, it is a waste of manpower and material resources, and the construction is difficult.

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