Horizontal displacement control device and method of formwork in hollow floor slab

Abstract

The invention provides a horizontal displacement control device and method of a formwork in a hollow floor slab. The device comprises a plurality of horizontal displacement control structures, the horizontal displacement control structures comprise fixed portions and formwork limit portions, the formwork limit portions are arranged beside the side surface of the formwork and connected with the fixed portions, and the fixed portions are fixed to upper reinforcing steel bars or lower reinforcing steel bars of the floor slab. According to the method, the horizontal displacement control device ofthe formwork is mounted at the side edge of the formwork before the hollow floor slab is cast. The device can effectively limit horizontal displacement of the formwork caused by excessive side pressure in the casting process of the hollow floor slab, construction quality of the hollow floor slab is ensured, raw materials are conveniently acquired, the device is simple in structure, simple and convenient to manufacture, the utilization rate of the reinforcing steel bars can be increased, and waste is reduced.

Description

technical field [0001] The invention belongs to the technical field of concrete pouring, and in particular relates to a device and method for controlling the horizontal displacement of a formwork in a hollow floor slab. Background technique [0002] Reinforced concrete structures require large building materials and are heavy in weight, while for floor slabs, the middle part is generally suspended, so the strength of the floor slab is low. For this reason, the country advocates the use of cast-in-place hollow slab technology to realize the construction of the slab. In this way, not only can the consumption materials be reduced, but also the weight of the slab can be reduced. The construction method of hollow-core slabs is generally to add a mandrel into the concrete. The construction process is to build the formwork, lay the steel mesh, put the mandrel, and pour the concrete to get the hollow floor. [0003] However, during the construction of the cast-in-place concrete ho...

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Problems solved by technology

[0003] However, during the construction of the cast-in-place concrete hollow slab, due to the large lateral pressure generated during concrete pouring, it is very easy to cause the horizontal displacement of the formwork in the hollow slab, resulting in the concrete thickness between the formwork and the design. , the hollow structure spacing of the hollow floor slab after pouring does not match the design, which affects the quality of the project and thus affects the safety of the structure

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