Full-web type steel box transfer beam and connecting structure of full-web type steel box transfer beam and reinforced concrete shear wall

Abstract

The invention discloses a full-web type steel box transfer beam and a connecting structure of the full-web type steel box transfer beam and a reinforced concrete shear wall. The full-web type steel box transfer beam comprises a steel box beam and concrete, wherein the steel box beam is provided with a pipe-shaped main body formed by connecting a top plate, a bottom plate and two web plates; each span, corresponding to the transfer beam, of the top plate is provided with a group of local open openings; each concrete casting opening in each group of local open openings is formed in the middle position of the span corresponding to the transfer beam; and each group of local open openings is provided with at least one exhaust hole in two hogging moment region ranges of the span corresponding to the transfer beam. The transfer beam has the advantages that on the premise that the normal cross-section bending-resistant performance, the torsion-resistant performance, the vertical shearing-resistant performance and the local stability are not lowered through being compared with those of a closed steel box-concrete composite beam without local open openings in the prior art, great convenience is brought for the concrete casting in the construction process; the concrete casting efficiency is improved; and the transfer beam is applicable to cantilever transfer and large-span transfer.

Description

technical field [0001] The invention relates to a solid-web steel box transfer beam and a connection structure between the transfer beam and a reinforced concrete shear wall. Background technique [0002] With the development of the national economy, the construction industry has put forward higher and higher requirements for building structures, which has promoted the continuous development of building structures in the direction of large-span, light weight, environmental protection, and multi-function. Traditional structures can no longer meet the requirements of modern building structures. Requirements, steel-concrete composite structures have been widely used in bridges, industrial plants, high-rise buildings, urban overpasses and other projects due to their high bearing capacity, light weight, small structure size, good seismic performance, and convenient construction. One of the important development directions of the structure. [0003] figure 1 It shows a closed st...

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Problems solved by technology

[0005] First, in order to avoid the influence of too large and too many concrete pouring holes on the stiffness and shear bearing capacity of the transfer beam, in the prior art, the above-mentioned composite beam only needs to open 1 to 2 concrete pouring holes on the roof DINGBAN. Concrete is poured into the inner cavity NQ of the steel box girder GXL, which makes the concrete pouring process more troublesome, and it is easy to cause the problem that the inner cavity NQ of the steel box girder GXL is not completely filled by the concrete HNT;

[0006] Second, the steel box girder GXL components of the above-mentioned composite beams use a lot of steel and have a relatively large dead weight. Therefore, the above-mentioned composite beams are difficult to apply to the cantilever conversion and long-span conversion in high-rise buildings, and it will also increase the cost of the superstructure of the building , The load on the foundation increases, and the overall cost of the building increases;

[0007] Third, for the case where a reinforced concrete shear wall is installed above the transfer beam, the steel box girder GXL of the above-mentioned composite beam needs special structural treatment to ensure the reliability of the connection with the reinforced concrete shear wall, and the connection cost is relatively high. High, cumbersome construction

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