A multi-ribbed hollow composite floor

By using hollow molds and air layer structures in prefabricated buildings, the problems of weight and thermal insulation/sound insulation of concrete floor slabs are solved, achieving the effects of lightweighting, simplified construction, and improved performance.

CN224514516UActive Publication Date: 2026-07-17HUNAN CHENGYOU GREEN BUILDING MATERIAL TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUNAN CHENGYOU GREEN BUILDING MATERIAL TECH CO LTD
Filing Date
2025-06-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing prefabricated buildings, solid concrete floor slabs are heavy, costly to manufacture, have poor thermal insulation and sound insulation effects, and the pouring process is cumbersome. Lightweight infill strips are prone to displacement, resulting in holes and additional operating steps.

Method used

Hollow molds are used to replace part of the solid concrete. Hollow grooves are designed to form an air layer with the bottom plate. Combined with longitudinal and transverse ribs and steel reinforcement, the drilling and pressing steps are eliminated. The stability of the hollow molds and the air layer are used to improve the thermal insulation and sound insulation performance.

Benefits of technology

Reduce the self-weight of the floor slab, improve manufacturing efficiency, enhance the overall structure and load-bearing performance, improve thermal insulation and sound insulation effects, simplify construction steps, and ensure the accuracy of geometric dimensions.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224514516U_ABST
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Abstract

The utility model discloses a kind of dense rib hollow composite floor, including bottom plate, longitudinal rib beam, edge longitudinal rib and transverse rib beam, the hollow mould box is set in the space formed by two transverse auxiliary beams and two longitudinal auxiliary beams, the space formed by two two transverse auxiliary beams and longitudinal auxiliary beam and edge longitudinal rib, several hollow grooves are provided on the hollow mould box, the hollow groove is oriented downward, air heat insulation sound insulation layer is formed between the hollow groove and bottom plate.The utility model's dense rib floor replaces part solid concrete with hollow mould box, greatly reduce the self-weight of floor, hollow mould box is not easy to shift in the process of pouring concrete, ensure the geometric dimension accuracy of final floor structure and the uniformity of internal filling, thus need not to carry out pressure hole drilling cooperation pressure rod, punch, insert pressure rod, pour out pressure rod after pouring, pressure hole later plugging treatment and other cumbersome steps are omitted, reduce the complexity of operation, improve overall manufacturing efficiency.
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Claims

1. A ribbed hollow composite floor slab, comprising a base plate (1), longitudinal ribs (2), edge longitudinal ribs (3), and transverse ribs (4), wherein the upper surface of the base plate (1) is provided with edge longitudinal ribs (3), a plurality of longitudinal auxiliary beams, and edge longitudinal ribs (3) sequentially from left to right, and a plurality of parallel transverse ribs (4) are provided between the edge longitudinal ribs (3) and the longitudinal auxiliary beams, and between two of the longitudinal auxiliary beams, characterized in that: It further includes a hollow formwork (7), which is arranged in the space formed by two transverse ribs and two longitudinal ribs, and in the space formed by two transverse ribs, longitudinal ribs and side longitudinal ribs (3). A number of hollow grooves (8) are provided on the hollow formwork (7), the hollow grooves (8) face downward, and an air thermal insulation, sound insulation layer is formed between the hollow grooves (8) and the bottom plate (1).

2. The multi-ribbed hollow composite floor slab as claimed in claim 1, wherein: The bottom plate (1) is a fiber reinforced cement sheet.

3. The multi-ribbed hollow composite floor slab as claimed in claim 1, wherein: Upper flanges (5) are provided at the upper ends of the longitudinal rib beams (2) and the side longitudinal ribs (3), and the lower surface of the upper flanges (5) is in contact with the hollow formwork (7).

4. The densely ribbed hollow composite floor slab according to claim 3, characterized in that: A number of horizontally distributed transverse steel bars (6) penetrate through between the multiple upper flanges (5).

5. The densely ribbed hollow composite floor slab according to claim 1, characterized in that: The hollow grooves (8) on the hollow formwork (7) are distributed in a "field" shape, a "day" shape or a "square" shape.

6. The multi-ribbed hollow composite floor slab of claim 1, wherein: The left and right ends of the bottom plate (1) extend out of the outer sides of the side longitudinal ribs (3).