A rice-shaped reinforced structure of a floor slab

Abstract

The invention provides a reinforcing steel bar distribution structure shaped like a Chinese character mi for a floorslab. The reinforcing steel bar distribution structure shaped like a Chinese character mi mainly is mainly used on a rectangular floor slab with girders at the periphery, and mainly comprises a lower-layer reinforcing mesh, an upper-layer reinforcing mesh and a top and bottom opposite angle connecting bracket. The periphery of the lower-layer reinforcing mesh penetrates through a reinforcing steel bar body of the girder, and the lower-layer reinforcing mesh comprises a cross-shaped reinforcing mesh and a slab corner reinforcing mesh. The upper-layer reinforcing mesh is distributed above the lower-layer reinforcing mesh, and the periphery of the upper-layer reinforcing mesh is connected with the upper side part of the reinforcing steel bar body. The upper-layer reinforcing mesh comprises a middle reinforcing mesh and a girder corner reinforcing mesh. Through the mode of distributing the reinforcing steel bars in a shape like a Chinese character mi at the upper and lower layers, the performance of the various reinforcing meshes are given full play, and the materials are also saved. The reinforcing steel bar distribution structure can be prefabricated in a factory and is then constructed on the site, the site operation is convenient, and the construction efficiency and the construction quality are improved. The top and bottom opposite angle connecting bracket leads to integral connection of the upper-layer reinforcing mesh and the lower-layer reinforcing mesh, so that cracks on four corners of the floorslab are eliminated, and the bearing capacity of the floorslab and the rigidity of a floor system structure are also improved.

Description

technical field [0001] The invention relates to the field of construction, in particular to a rice-shaped reinforcement structure used on a rectangular floor with beams all around. Background technique [0002] In the current reinforced concrete civil floor, the reinforcement of the rectangular floor slab with beams around is set according to the requirements of conventional regulations, that is, the vertical and horizontal staggered steel mesh parallel to or perpendicular to the surrounding beams is used as the lower steel mesh to play the main bearing capacity. role. In addition, negative moment tendons vertically extending to the floor are arranged on the upper part of the steel bar of the beam, and distribution tendons are vertically connected to the negative moment tendons. The above-mentioned reinforcement structure has the following problems in engineering practice: (1) one or more horizontal cracks perpendicular to the corner bisector often appear at the four corner...

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Problems solved by technology

The above-mentioned reinforcement structure has the following problems in engineering practice: (1) one or more horizontal cracks perpendicular to the corner bisector often appear at the four corners of the poured floor slab; Due to the positioning requirements of the roof reinforcement, it is easy to sink due to the operation during the actual reinforcement operation, and under the negative bending moment of the floor, it is easy to appear cracks parallel to the beam beside the beam; (3) When the span of the floor slab When the distance is large, the formwork in the middle of the slab needs to be arched upwards when the formwork is supported, so that the bending moment in the middle of the slab is the largest, but this also causes the thickness of the middle of the slab to be smaller; In fact, the actual bending moments at the four corners of the floor slab are very small, and the effect of the upper layer of reinforcement is not fully exerted, resulting in a large surplus of reinforcement, and the effect of making the best use of everything cannot be achieved

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