Fabricated prestressed long-span beam structure

Abstract

The invention provides a fabricated prestressed long-span beam structure. The fabricated prestressed long-span beam structure comprises trussed beams, and the trussed beams comprise upper chords, lower chords and a plurality of assembled-connecting units. The upper chords comprise first supporting rods and second supporting rods arranged in parallel at intervals, and the first supporting rods areconnected with the second supporting rod through connecting pieces. The lower chords are arranged under the upper chords and located between the first supporting rods and the second supporting rods, and the lower chords and the upper chords are arranged in parallel. The assembled-connecting units comprise a plurality of web rods, the lower ends of the web rods are arranged adjacent to each other and hinged to the lower chords, the first supporting rods are hinged to the upper ends of part of the web rods, and the second supporting rods are hinged to the upper ends of the other part of the webrods. The web rods connected to the first supporting rods are arranged at intervals, and the web rods connected to the second supporting rods are arranged at intervals. The fabricated prestressed long-span beam structure can be fabricated on site according to the use demand, construction is convenient and quick, costs are reduced, a hinged method is adopted at joints, it is ensured that the shaftof the web rods is not subject to the action of bending moment, green construction is achieved, and maintenance is convenient.

Description

technical field [0001] The invention relates to the technical field of industrialized assembled buildings, in particular to an assembled prestressed long-span beam structure. Background technique [0002] The prefabricated steel structure has many advantages, such as large-scale production, on-site assembly, green construction, fast construction, and has obvious advantages in seismic performance compared with concrete structures. It is a new type of structure that has emerged in recent years, so it is widely used in housing In the design and construction of buildings, but rarely used in long-span structures. [0003] Most of the long-span beam structures are prestressed concrete structures, with huge body shape and components, high section height-thickness ratio, high space requirements, huge material consumption, high cost, and excessive mid-span deformation resulting in weakened seismic performance; Most of the span beam structures are rigid joints, the joints are complic...

AI Technical Summary

Problems solved by technology

[0003] Most of the long-span beam structures are prestressed concrete structures, with huge body shape and components, high section height-thickness ratio, high space requirements, huge material consumption, high cost, and excessive mid-span deformation resulting in weakened seismic performance; Most of the span beam structures are rigid joints, the joints are complicated, the construction is difficult, the construction speed is slow and the period is long, the construction pollution is serious, and the maintenance after the earthquake is difficult

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