Anti-floating-free combined core mold for hollow floor slab

Abstract

The invention discloses an anti-floating-free combined core mold for a hollow floor slab. The anti-floating-free combined core mold comprises a core mold body, a grid plate and transverse supporting rods, wherein an upper face and a lower face of the core mold body are open, the grid plate covers an upper face opening and a lower face opening of the core mold body and is fixedly connected with the core mold body, meshes in regular or irregular shapes are formed in the grid plate, the size of the meshes is smaller than the diameter of fine sand for building concrete, and the transverse supporting rods stretch across the opening of the core mold body and are used for supporting the upper grid plate and the lower grid plate. The anti-floating-free plastic steel combined core mold for the hollow floor slab is light in weight and convenient to combine, air generated during concrete pouring can be effectively exhausted through the meshes in the grid plate, pressure intensity inside and outside the core mold is equal, an air bag cannot be formed in the core mold, therefore, the core mold cannot float upwards, and anti-floating cost of the core mold is reduced.

Description

technical field [0001] The invention relates to the technical field of floor slabs, in particular to an anti-floating composite mandrel for a hollow floor slab, which belongs to a built-in hole-forming mold for a hollow floor slab. Background technique [0002] The higher the floor, the greater the load-bearing capacity of the building, and the more unfavorable it is to the safety of the building. Therefore, it is particularly important to choose building materials with lighter weight and convenient construction, especially the choice of floor materials. The advantages of the floor slab are light weight, large span, good sound insulation and noise prevention effect, and can improve the utilization rate of building space. It also has the advantages of shortening the construction period and saving costs, so it has a great market prospect. [0003] When concrete is poured on the hollow floor slab, the vibration of the concrete will generate buoyancy on the mandrel, and the mand...

AI Technical Summary

Problems solved by technology

The existing anti-floating measures have technical problems such as high cost, high labor intensity, and damage to the building formwork, which affects its service life.

Images