Concrete hollow double-layer floor and construction method thereof

Abstract

The invention discloses a concrete hollow double-layer floor. The concrete hollow double-layer floor comprises a lower laminated plate, an upper laminated plate and a structural beam, which are all of reinforced concrete structures, especially, the lower laminated plate, the upper laminated plate and the structural beam define a mould cavity; the structural beam and the lower laminated plate are continuously formed integer structure; and an upper laminated plate template and a laminated timber supporting frame are arranged in the mould cavity. The concrete hollow double-layer floor is convenient in construction, is low in manufacturing cost and is good in perception effect. The invention also discloses a construction method for the concrete hollow double-layer floor, and the construction method comprises the following steps: 1, constructing a scaffold supporting system; 2, constructing a lower laminated plate template; 3, hoisting structural beam reinforcement; 4, spreading lower laminated plate reinforcement; 5, mounting a beam side template; 6, pouring the lower laminated plate concrete and the structural beam concrete; 7, dismounting the beam side template; 8, constructing the laminated timber supporting frame and the upper laminated plate template; 9, spreading upper laminated plate reinforcement; 10, pouring upper laminated plate concrete; and 11, dismounting the lower laminated plate template. The method has the characteristics of low construction cost, short construction period and firm structure, and is very suitable for bare concrete decorated floors.

Description

technical field [0001] The invention relates to the construction field, in particular to the structure and construction method of a concrete hollow double-layer floor slab. Background technique [0002] At present, in the construction of concrete hollow double-layer slabs, foam and plastic mandrels are usually used to fill the hollow parts. During construction, the concrete is poured and formed at one time. For example, the application number 201310211866.2 discloses a hollow slab and its construction method. The space between the lower slabs is filled by the mandrel, and the bottom of the mandrel is positioned by the anti-floating member; the construction method is: (1) build the formwork of the hollow floor slab; (2) install the anti-floating member; (3) lay the protective layer Reinforcement bars are used to construct the lower slab of the hollow-core slab; (4) Set the lower supporting member; (5) Install the mandrel; (6) Install the upper supporting member; (7) Lay the u...

AI Technical Summary

Problems solved by technology

The above-mentioned hollow double-layer floor slab effectively solves the floating problem of steel bars and mandrel caused by pouring concrete through anti-floating components. One-time pouring and forming construction method, and the pouring thickness is thick, it is difficult to ensure the compactness of the lower slab concrete; 2. At present, the building design needs, the floor slab section is usually a special-shaped section, there is no uniform section size, and the mandrel needs to be in accordance with the construction needs. Customized sizes will bring great pressure on the construction period and cost; 3. After the formwork of the above-mentioned hollow slab is removed, the bottom surface of the anti-floating components will be exposed. For the floor slabs that are poured with fair-faced concrete, the anti-floating components will seriously affect the fair-faced concrete 4. The floor slabs of existing buildings are loaded by the rib beams installed on the bottom surface of the floor slabs. Generally, there are more rib beams installed on the floor with a large span. More rib beams increase the project cost and greatly affect the indoor appearance of the building. Effect

Therefore, the range of application of this hollow double-layer slab filled with mandrel is limited, and it is necessary to improve

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