Prefabricated bottom plate of laminated slab, laminated slab, and preparation method of laminated slab

Abstract

The invention discloses a prefabricated bottom plate of a laminated slab, the laminated slab, and a preparation method of the laminated slab, and belongs to the field of prefabricated buildings. The prefabricated bottom plate of the laminated slab comprises connecting part groups, a first composite steel bar layer, and a concrete bottom plate. Each of connecting parts comprises a connecting blockand positioning steel bars horizontally penetrating through the lower part of the connecting block; the upper part of each of the connecting blocks is provided with a downwards concave connecting groove and penetrated plug pin holes vertical to the connecting groove; and the connecting grooves are used for inserting webs, with inserted holes, of profile steel parts. The first composite steel bar layer comprises an upper steel bar layer and a lower steel bar layer; the positioning steel bars of the connecting parts and the lower steel bar layer are located on the same plane; the connecting blocks penetrate through meshes of the first composite steel bar layer; and the plug pin holes are located above the concrete bottom plate. Due to the design of the connecting grooves and the plug pin holes in the upper side of the prefabricated bottom plate, the profile steel parts can be detached, hoisting and stacking are convenient, and the positioning steel bars of the prefabricated bottom platecan also prevent the risk that the multifunctional concrete block connecting parts are pulled out of the prefabricated bottom plate in the lifting and hoisting process.

Description

technical field [0001] The invention relates to the field of prefabricated buildings, in particular to a prefabricated base plate of a laminated board, a laminated board and a preparation method of the laminated board. Background technique [0002] At present, the country is vigorously promoting prefabricated buildings, and the most widely used horizontal prefabricated components in prefabricated concrete buildings are reinforced truss concrete composite panels. Reinforced truss concrete composite slabs use steel trusses to increase the rigidity of the concrete prefabricated floor and reduce the risk of cracking of the prefabricated floor during demoulding, lifting, stacking, transportation and installation. However, the steel truss uses a large amount of steel, and it is poured together with the laminated floor slab and cannot be reused, resulting in a large increase in the cost of the laminated slab. At the same time, the steel truss needs to be designed with a higher hei...

AI Technical Summary

Problems solved by technology

However, the steel truss uses a large amount of steel, and it is poured together with the laminated floor slab, which cannot be reused, resulting in a large increase in the cost of the laminated slab

At the same time, the steel truss needs to be designed with a higher height to ensure the smooth penetration of the water and electricity pipelines on the construction site, which in turn leads to an increase in the thickness of the laminated floor slab, further increasing the cost of the laminated slab

[0003] During the stacking process of reinforced truss concrete laminated slabs, sleepers need to be placed between different layers of laminated slabs as cushions. On the one hand, this method increases the amount of materials used. Cracks occur during stacking

[0004] In the production process of the prefabricated floor of the laminated slab, there is a lack of simple and effective measures to control the thickness of the floor, which leads to large production errors of the prefabricated floor

[0005] During the pouring construction of the floor slab, because the plain concrete ash cake is easily broken, and the horse stool tendons are easily deformed and displaced by workers, etc., there are often quality and safety problems such as the protective layer of the floor slab reinforcement does not meet the design requirements, and the pouring thickness of the floor slab is too thick. , which also increases the engineering cost

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