CN2228503Y - On-the-site pouring hollow plate with permanent mould - Google Patents

Abstract

The utility model relates to an on-site cast hollow plate which is used for the concrete of buildings. The existing hollow plate only can be precast, is unable to be cast on the site and can not be used as a large-span floor plate because the existing hollow plate needs to be demoulded. The utility model has the structure that the on-site cast concrete plate which is made contains a hollow tire mold, so the on-site cast concrete plate can be cast into the large-span floor plate on the site; the shape of the sectional plane of the hollow tire mold can be trapezoidal, square or round, etc., and the hollow tire mold is made of cheap material such as hardboards. The utility model has the advantages of simple construction, flat plate bottom of the large-span floor plate, simple mold placing process, high construction speed, concrete saving and light building dead weight; owing to no secondary beam, the clear space of a building floor is increased or the floor height can be reduced, and the utility model is used for high buildings with more evident effect.

Description

Cast-in-place hollow slab with permanent loose tool

The utility model is a kind of concrete cast-in-situ hollow plate that is used for building.

Existing large span floor system has: cast-in-place slab, prestressing without bondn floor, well word flooring, close rib flooring.Cast-in-place slab is from great (thickness of slab has 200 millimeters usually), though prestressing without bondn floor attenuate the thickness of slab construction complicated, well word flooring, close rib flooring put the mould difficulty and the conversion thickness of slab also thicker.And general hollow plate is because of must the demoulding, can only be prefabricated can't be cast-in-place, can not be used as large span floor.

The purpose of this utility model is the shortcoming that overcomes prior art, provides a kind of converting thickness little, from heavy and light, puts mould and the not difficult concrete cast-in-situ large span hollowcore slab of construction.

Structure of the present utility model is as follows: hollow mould is contained in the inside at the cast in place concrete plate of making.The utility model contains hollow mould owing to inside, thereby is cast-in-situ concrete hollow slab; Owing to be water property of a specified duration loose tool, must the demoulding, thereby can cast-in-placely be large span floor.The cross sectional shape of said hollow mould can be trapezoidal, square, circular or other shapes; Can make by cheap material, as making by hardboard, rigid foam or potter's clay etc.

The utility model has the advantages that:

1, easy construction, smooth at the bottom of the plate of large span floor, make and put die process and simplify, accelerate speed of application;

2, can save concrete, alleviate the building deadweight;

3, owing to no secondary beam, thereby make the headroom increase of floor maybe can reduce floor height, it is more remarkable to be used for the highrise building effect.

Fig. 1 is the three-dimensional part section structural representation of embodiment.

Fig. 2 is the hardboard loose tool structural representation of embodiment.

Fig. 3 looks cross-sectional view for the master of embodiment.

Embodiment: see Fig. 1 to 3.The hollow mould 2 that is made by hardboard is contained in the inside of cast in place concrete plate 1.Hollow mould 2 is made up of the cardboard support 4 of peripheral hardboard 3 and Qi Nei, and the cross section is trapezoidal.5 is that hole, 6 is concrete beam among the figure.Owing to form girt strip 7 between the hole, so the approximate close rib building roof of stress form.

Claims (2)

1, a kind of cast-in-place hollow slab with permanent loose tool, it is characterized in that: hollow mould is contained in the inside at the cast in place concrete plate of making.

2, as the said cast-in-place hollow slab of claim 1, it is characterized in that with permanent loose tool; The hollow mould (2) that is made by hardboard is contained in inside, and hollow mould (2) is made up of peripheral hardboard (3) and the support of the cardboard in it (4), and the cross section is trapezoidal.