Cast-in-place prestressed concrete sandwiched composite beamless floor slab structure

Abstract

The invention discloses a cast-in-place prestressed concrete sandwiched composite beamless floor slab structure which comprises a beamless floor slab body and a bottom formwork, wherein the bottom formwork is arranged at the bottom of the beamless floor slab body, the beamless floor slab body comprises a plurality of transverse partition plates, the adjacent transverse partition plates are fixedly connected through a plurality of reinforcing plates, the interiors of the transverse partition plates and the reinforcing plates are of a cavity structure, transverse steel bar holes are formed in the transverse partition plates, and vertical steel bar holes and pipeline holes are formed in the joints of the reinforcing plates and the transverse partition plates. The cast-in-place prestressed cast-in-place concrete sandwiched composite beamless floor slab structure and a construction method have the beneficial effects that the problem that the existing cast-in-place concrete beamless floor slab cannot completely meet the building requirements, especially the problems of sound insulation, heat preservation and corrosion of steel bars, which cannot be solved, can be solved, the construction period can be shortened, and the construction cost can be reduced; and the structure can be used for beamless floor slab structure systems of various industrial and civil buildings such as multi-layer, high-rise and super high-rise buildings.

Description

technical field [0001] The invention relates to the field of construction, in particular to an in-situ prestressed concrete sandwich composite beamless floor structure. Background technique [0002] At present, the prestressed or non-prestressed cast-in-place concrete beamless floor slab structure adopted by the known traditional construction methods has a large thickness and self-weight, high cost, and is limited by the span of the slab, so it is difficult to popularize. In recent years, prestressed cast-in-place concrete hollow slab structures have emerged. Since the pipes used to form the hollow in the plate can only be arranged in one direction, the internal force distribution of the plate in the vertical and horizontal directions is quite different. The direction along the pipe is the main force direction, and the direction perpendicular to the pipe is the secondary force direction. Due to the one-way stress plate, the thickness of the plate is increased, and the reinf...

AI Technical Summary

Problems solved by technology

The bigger problem with the prestressed cast-in-place concrete hollow slab structure that has emerged in recent years is that a large number of hollow pipes are placed inside this structure. During the construction of cast-in-place concrete, a certain amount of water will remain, which will remain inside the slab. The accumulated water will corrode the steel bars in the slab over time

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