Fabricated concrete hollow floor structural system

Abstract

The invention relates to a fabricated concrete hollow floor structural system. The fabricated concrete hollow floor structural system is formed by means of stacking and assembling of a floor cast-in-situ layer and a floor pre-fabricated layer; a plurality of hollow structures are arranged in the floor cast-in-situ layer; each hollow structure is a hollow box or a light material body; slab top constructional steel bars are arranged in the floor cast-in-situ layer; pre-fabricated slab constructional steel bars are arranged in the floor pre-fabricated layer; the floor cast-in-situ layer is provided with a ribbed beam top reinforcement, ribbed beam bottom reinforcement, and ribbed beam stirrup, or the bottom of the ribbed beam bottom reinforcement is pre-embedded in the floor pre-fabricated layer; and the ribbed beam top reinforcement and the ribbed beam bottom reinforcement stretch to the side edge of the floor, and become the load-bearing bars lapped with the beam. The fabricated concrete hollow floor structural system has the advantages of being low in cost, being high in efficiency, saving materials, reducing self-weight, being relatively more reasonable in stress, being high in structural strength, and being high in quality.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to an assembled concrete hollow floor structure system. Background technique [0002] The fully cast-in-place concrete hollow floor has the advantages of saving building materials, reducing self-weight, good integrity, and high structural strength. However, the fully cast-in-place concrete hollow floor requires a large number of supporting and folding formwork and supporting tool-type support systems. The amount of work is large and the operation is complicated. Generally, specialized wooden formwork technicians are required. The cost of formwork is high, and the construction period is long. Finally, it is time-consuming and labor-intensive to remove the formwork. At the same time, the thickness of the lower flange of the cast-in-place concrete hollow floor is relatively thin. When pouring concrete, the lower flange is prone to air bubbles, cavities and...

AI Technical Summary

Problems solved by technology

However, the fully cast-in-place concrete hollow floor requires a large number of supporting and folding formwork and supporting tool-type support systems. The amount of work is large and the operation is complicated. Generally, specialized wooden formwork technicians are required. The cost of formwork is high, and the construction period is long. Afterwards, it is time-consuming and labor-intensive to remove the formwork

At the same time, the thickness of the lower flange of the cast-in-place concrete hollow floor is relatively thin. When pouring concrete, the lower flange is prone to air bubbles, cavities and other non-compact problems, which affect the quality of the floor.

In addition, when the concrete is poured, the empty box will be subject to a large buoyancy force and float upwards. Therefore, it is necessary to add spacers between the steel bars and the empty box to ensure the thickness of the upper flange. Therefore, it is difficult to ensure the quality of the hollow floor Big

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