Construction method of long-span steel truss suspension structure

Abstract

The invention relates to a construction method of a long-span steel truss suspension structure. The construction method comprises the following steps that supporting jig frames and steel rib frame columns are erected at set positions; steel rib frame beams and supporting columns are spliced layer by layer from bottom to top; multiple web rods are spliced at a top layer to form a steel truss structure; concrete wrapping the steel rib frame columns is poured layer by layer from bottom to top so as to form steel-reinforced concrete columns and concrete floors wrapping the steel rib frame beams, and later-poured areas are reserved at the ends of the concrete floors; after the concrete columns and the concrete floors to be located on the top layer solidify, the reserved later-poured areas are poured layer by layer from bottom to top, and connecting structures for connecting the corresponding concrete floors with the steel-reinforced concrete columns are formed in each layer. The top load ofa steel structure frame is completed borne by the supporting jig frames and the steel rib frame columns, and the structure has better stress stability. The connecting structures are constructed afterthe later-poured areas are utilized, the problem can be solved that beam-column nodes of the floors are likely to crack.

Description

technical field [0001] The invention relates to the construction field of steel truss concrete structures, in particular to a construction method of a large-span steel truss suspension structure. Background technique [0002] With the rapid completion of large-scale commercial general contract projects across the country, steel structure corridors across the street have become a relatively common structural form preferred by owners. However, due to the large span of the structure, generally more than 35 meters in span, if the corridor structure adopts steel structure or concrete structure, the span will make the construction of horizontal steel beam or horizontal concrete structure more difficult, which is difficult to meet The strength and stability requirements of the horizontal structure have great potential safety hazards. If a structure combining steel and concrete is used, it can meet the strength requirements, but the concrete floor will crack due to large deformatio...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, provide a construction method for a large-span steel truss suspension structure, and solve the problems of poor lateral structural strength and stability and easy occurrence of concrete floor slabs existing in the construction of existing steel structure corridors. cracking problem

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