Construction method of box-type cast-in-place concrete hollow floor

Abstract

The invention belongs to the technical field of building construction, and relates to a construction method of a box-type cast-in-place concrete hollow floor. Wire harness installation; (4) box formwork installation, setting anti-floating fixed points; (5) panel reinforcement installation; (6) concrete pouring; (7) concrete curing; (8) unbonded prestressed strand tensioning, (9) reserved concrete pouring; (10) maintenance and formwork removal; the advantage is: the present invention adopts unbonded prestressed tendons, which can effectively improve the structural mechanical performance of the building, and solve the problem that the building structure is under normal conditions. It is difficult to control the cracks and deflection in the use state to prevent the leakage of the floor.

Description

technical field [0001] The invention belongs to the technical field of building construction technology, in particular to a construction method for a box-type cast-in-situ concrete hollow floor. Background technique [0002] The diversity of modern residences and public buildings requires continuous improvement of traditional structural forms and construction methods to adapt to the development of the times. The cast-in-place concrete hollow floor is a new structural technology developed in China in recent years. It meets the needs of large spaces and large Requirements for residences and public buildings with span column nets have the advantages of saving the amount of concrete, reducing the amount of steel bars, reducing the earthquake effect, increasing the stiffness of the floor slab, and enhancing the sound insulation effect of the floor slab. Due to the fluidity of the concrete, the poured hollow floor structure has the problem of floating of the hollow box formwork. T...

AI Technical Summary

Problems solved by technology

[0002] The diversity of modern residences and public buildings requires continuous improvement of traditional structural forms and construction methods to adapt to the development of the times. The cast-in-place concrete hollow floor is a new structural technology developed in China in recent years. It meets the needs of large spaces and large Requirements for residences and public buildings with span column nets have the advantages of saving the amount of concrete, reducing the amount of steel bars, reducing the earthquake effect, increasing the stiffness of the floor slab, and enhancing the sound insulation effect of the floor slab. Due to the fluidity of the concrete, the poured hollow floor structure has the problem of floating of the hollow box formwork. The light one will cause local floor elevation or superelevation, and the heavy one will cause a large area of ​​the box to float up, resulting in quality accidents; the other is as a bending component. The floor slab is composed of a tension area and a compression area. The tension and pressure will cause a certain stress on the floor, which will easily cause local damage or even cracks and leakage on the floor.

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