An Assembled Cavity Floor Slab for Forced Island

Abstract

The invention provides astress island assembled type hollow floor, comprising a column, a main beam, an assembled type hollow plate, a stress island, an upper wing plate of the assembled type hollow floor, and a joint seam, wherein the assembled type hollow plate consists of a longitudinal rib, a bidirectional loading-formed regeneration rib, a hollow hole forming member, a lower wing plate, a rib or local stirrup exposure of the rib and a stress island reserved corner; the longitudinal rib of the assembled type hollow plate is provided with two exposed ends; the stress island is arranged in such a manner that, in the fabrication of the assembled type hollow plate, a space larger than 0.18mm<2> for the stress island reserved corner is assembled at the periphery of an outer edge of the column, a column rib, a main beam rib, an upper wing plate rib and a rib in the space for the stress island reserved corner form stress island ribs, and concrete is cast to form the stress island; the joint seam is formed in a lower surface of the stress island assembled type hollow floor, and is in an intermittent state, and the joint seam is only part of thickness of the hollow floor.

Description

technical field [0001] The invention relates to a prefabricated building system technology, in particular to a prefabricated cavity floor slab technology of a stress island. 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 poor integrity of concrete prefabricated slab components, it was banned from use; in the process of residential construction, the country promoted the use of large slab structures and cast-in-place concrete structures for floor slabs. , 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 It has been developed rapidly, and the prefabricated floor in my country has just started, using longitudinal laminat...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to organically combine industrially produced prefabricated assembly cavity plate components with cast-in-place reinforced concrete beams and columns to effectively solve the poor integrity of "concrete prefabricated component technology" and the difficult controllability of "building cast-in-place technology". , to fundamentally improve the overall safety of the building; the key to achieve two-way stress is the formation of regenerative beams; the principle of force islands is adopted, and according to the finite element structural analysis, through optimizing the structure and combining column reinforcement, beam reinforcement, and upper flange Concrete is poured into the reserved steel bars of the prefabricated cavity slab member stress island to form a stress island; the prefabricated cavity slab member composed of reinforced concrete rib beams, hole-forming members and lower flange plates can maximize the The weight of the prefabricated cavity slab components is reduced, which lays the foundation for the realization of large-span buildings without exposed beams; it forms a kind of prefabricated cavity floor slab for force-bearing islands, which saves the benefits of floor space occupied by exposed beams, and achieves optimal performance. Prefabricated building with frame structure technology system; overcomes a series of defects in the existing technology

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