Prestressed hollow floor and construction method thereof

Abstract

The invention relates to the technical field of building construction accessory devices, in particular to a prestressed hollow floor and a construction method thereof. Fixed intervals of core models can be adjusted according to the area of the floor, so that the uniformity and construction quality of the floor are ensured, the practicability is improved, a supporting connecting piece is conveniently disassembled, and the using reliability is improved; a bottom template, a board steel bar mesh and the multiple groups of core models arranged between a plate top steel bar mesh and a plate bottomsteel bar mesh are included, and supporting connecting pieces are arranged between the core models; and the supporting connecting pieces comprise left door type brackets, right door type brackets, twogroups of left threaded rods, two groups of right threaded rods two groups of connecting pipes, two groups of left connecting pipes are connected with the two groups of right connecting pipes. The construction method of the prestressed hollow floor comprises the steps of bottom template and plate bottom steel bar mesh mounting, setting anti-floating points, core model mounting, plate top steel bar fixing, core model positioning, core model fixing, complete inspection, concrete pouring, supporting connecting piece removal and mould removal.

Description

technical field [0001] The invention relates to the technical field of building construction attachments, in particular to a prestressed hollow floor slab and a construction method thereof. Background technique [0002] As we all know, the application of GFM lightweight internal formwork in the cast-in-place hollow floor can save the amount of concrete, reduce the weight of the structure, reduce the cost of the project, and reduce the earthquake effect; it is also more convenient to realize large bays and increase the usable area. Under the condition of using the net height, the structural floor height can be reduced, and for houses with height restrictions, the floor can be increased. "Building requirements and construction industry policies have good economic and social benefits; the existing prestressed hollow slabs include bottom formwork, slab bottom reinforcement mesh, slab top reinforcement mesh, and slab top reinforcement mesh and slab bottom reinforcement mesh. The...

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Problems solved by technology

[0002] As we all know, the application of GFM lightweight internal formwork in the cast-in-place hollow floor can save the amount of concrete, reduce the weight of the structure, reduce the cost of the project, and reduce the earthquake effect; it is also more convenient to realize large bays and increase the usable area. Under the condition of using the net height, the structural floor height can be reduced, and for houses with height restrictions, the floor can be increased. "Building requirements and construction industry policies have good economic and social benefits; the existing prestressed hollow slabs include bottom formwork, slab bottom reinforcement mesh, slab top reinforcement mesh, and slab top reinforcement mesh and slab bottom reinforcement mesh. There are multiple sets of mandrels in between. The mandrels are arranged in a matrix between the steel mesh at the bottom of the slab and the steel mesh at the top of the slab, and there are supporting connectors between the mandrels, which fix the mandrel through the supporting connectors to prevent concrete When the mandrel floats or moves horizontally during pouring, it is inconvenient to adjust the fixed spacing of the mandrel according to the area of ​​the floor, which affects the construction quality of the floor, resulting in low practicability and inconvenient adjustment of the supporting connectors. Disassembly, resulting in lower reliability

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