A prefabricated building cavity floor

Abstract

The invention provides an assembling type building cavity floor slab. The assembling type building cavity floor slab comprises columns, a main beam, a regenerated beam, cavity plate components, floor slab upper flange plates and decorating joint crevices. The assembling type building cavity floor slab is characterized in that regenerated beam connecting gaps are preserved in transverse rib beam steel bar connecting parts of the two cavity plate components; transverse rib beam steel bars are welded in the regenerated beam connecting gaps on site to form the regenerated beam; the regenerated beam and longitudinal reinforced concrete rib beams form bidirectional-stressed rib beams of the assembling type building cavity floor slab; the cavity plate components consist of reinforced concrete rib beams, surface-exposed steel bars, hole forming components and lower flange plates; at least two decorating joint crevices are formed in the bottom surface of the floor slab in a column net of the assembling type building cavity floor slab; the decorating joint crevices are intermittent and do not penetrate through the upper flange plates of the cavity floor slab; and the columns, the main beam, the regenerated beam connecting gaps and the cavity plate component upper flange plates are poured with concrete on site in the corresponding period, so as to form the assembling type building cavity floor slab.

Description

technical field [0001] The invention relates to a prefabricated building system technology, in particular to a prefabricated building cavity floor technology. Background technique [0002] In the 1980s, the production of concrete prefabricated slab components in my country was in a stage of great development. Due to the overall poor quality of concrete prefabricated slab components, the use of them was prohibited; the country promoted the use of large slab structures, cast-in-place concrete structures, Cast-in-place concrete hollow floor structure, cast-in-place concrete frame structure, cast-in-place concrete frame shear wall structure, etc.; with the process of housing industrialization, recently, steel-concrete composite structure and steel-concrete composite cavity floor structure system have been obtained With rapid development, my country's prefabricated floor has just started, using longitudinal laminated slabs, that is to say, prefabricated large slabs are laminated on...

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Problems solved by technology

[0007] The purpose of the present invention is to give full play to the advantages of the prior art and overcome the disadvantages of the prior art; specifically, it is a problem between "concrete prefabricated components" and "building cast-in-place technology", the former is poor in integrity, and the latter is not strong in controllability; Combining industrialized production of prefabricated cavity slab components with cast-in-place reinforced concrete beams and columns can effectively solve the integrity of "concrete prefabricated component technology" and the controllability of "building cast-in-place technology", and fundamentally improve the construction quality. The overall safety of the building promotes the progress of building science and technology; the creation of recycled beams realizes two-way stress; the optimization of decorative joints, part of the decorative joints are poured as a whole, and part of the gaps meet the requirements of the overall structure and avoid gaps; The frame-type reinforced concrete rib beam, the hole-forming member and the prefabricated cavity plate component composed of the lower flange plate greatly reduce the prefabricated cavity plate component and lay the foundation for the realization of a large-span building without exposed beams; Constitute a prefabricated building cavity floor cover, save the benefits generated by the floor space occupied by the exposed beams, and optimize the existing frame structure technology system; make full use of the advantages of industrial prefabricated production of prefabricated cavity slab components, and then integrate the existing The optimization of the vertical stacking relationship between beams and prefabricated laminated slabs based on technology is transformed into superimposing prefabricated laminated slabs in the horizontal direction of beams to realize prefabricated concealed beam floors, which not only improves the overall safety of the building, but also solves the problem of existing problems. There are vertically laminated slabs, which are laminated on top of the beams to form a building structure with exposed beams, which causes the exposed beams to occupy the height between floors, difficult implementation controllability, environmental pollution caused by on-site construction, heavy quality, high construction costs, slow progress of the project, and a large amount of The building formwork and steel support, resulting in a long formwork time and affecting the speed of construction and a series of defects

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