Large-span recessed fish-belly type combined light truss structure and installation method thereof

Abstract

The invention relates to a large-span recessed fish-belly type combined light truss structure and an installation method thereof. The large-span recessed fish-belly type combined light truss structureis a special large-span truss, and comprises positioning latticed columns, arched main trusses, modeled main trusses, modeled secondary trusses, cantilever main trusses and truss connecting rods arranged among the trusses, wherein the positioning latticed columns are of a tubular column type, and lower chords are arched main trusses. The large-span recessed fish-bellied type combined light trussstructure has the beneficial effects that more large-span recessed fish-bellied type combined light truss structures can be connected in parallel to form a large-area roof with two thick-heavy ends and a light-thin middle part, and the structure is more stable than a fish-belly truss with a large middle part and two small ends; the recessed fish-bellied modeling of the whole trusses can be controlled according to triangular trusses at the two ends of the secondary trusses and the size and the length of middle single chord rods; each truss shares the main trusses and the connecting rods are attractive connected, so that the whole roof truss forms a whole body with reasonable stressing and attractive modeling; the large-span recessed fish-belly type combined light truss structure and the existing fish-belly type truss structure are similar in structure, but different in modeling, and on the basis of the shared main trusses, the secondary trusses are crossingly connected by upper-chord and lower-chord connecting rods, so that all the main and secondary trusses form a whole body.

Description

technical field [0001] The invention relates to the technical field of large-scale roof trusses, in particular to a large-span sunken fish-belly combined light truss structure and an installation method thereof. Background technique [0002] With the continuous development of the domestic economy, flyovers, corridors, and large exhibition halls continue to emerge, and long-span roof trusses of various shapes emerge in endlessly; It is related to the safety and comfort of the pedestrians it carries. The traditional fish-belly truss has a relatively simple shape, and the middle part of the truss is relatively heavy. At the same time, when forming a long-span roof truss, the amount of steel used is large, which is uneconomical. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a large-span sunken fish-belly combined light truss structure and its installation method. Above, the secondary trusses are cr...

AI Technical Summary

Problems solved by technology

The traditional fish-belly truss has a relatively simple shape, and the middle part of the truss is relatively heavy. At the same time, when forming a long-span roof truss, the amount of steel used is large, which is uneconomical.

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