CN1003660B

CN1003660B - Decorative hollow precast floor slab

Info

Publication number: CN1003660B
Application number: CN86105918.2A
Authority: CN
Inventors: 任华国
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-08-29
Filing date: 1986-08-29
Publication date: 1989-03-22
Also published as: CN86105918A

Abstract

The present invention belongs to the field of slab construction and makes use of a square disk-shaped steel bottom die having embossed patterns to cause one face of a precast slab of a cast hollow floorslab to have embossed grid-shaped decorative effect. The manufacturing method of the precast slab and the construction method which uses the precast slab to assemble slabs in situ are totally the same with the traditional conventional methods; therefore, the present invention has high applicability; after slabs are completed, the decoration work of ceilings can be avoided; therefore, the comprehensive construction cost is below that of the traditional construction method, and the precast slab has the advantage of beautifying dwelling houses.

Description

Decorative hollow precast floor slab and manufacture method thereof and equipment

The invention belongs to building floor construction field, further relevant with prefabricated hollow precast floor slab.

Current civilian both at home and abroad and method of construction of building roof industrial building mainly divides on-the-spot integrated poured and utilize concrete prefabricated board two kinds of methods of assembly unit at the scene.The former is applicable to that the structure to building has the building that higher mechanics requires or vibrationproof requires, and its cost is expensive, the construction requirement height; The latter is used for the less building of span mostly, in the domestic especially at present residential construction, uses the hollow precast floor slab job practices of assembly unit superstructure at the scene morely, and its cost is lower, and job practices is simpler.

But above-mentioned two kinds of methods all have a defective, promptly after superstructure completion, and for beautifying constructure all needs ceiling is done further processing, or floating with cement mortar, add swabbing; Or on ceiling decorative material such as the gypsum plank of installation forming or calcium-plastic board; So not only increase cost but also prolonged the duration.In order to address the above problem, the inventor once proposed two patent applications (86105743 and 86205263), the made from permanent ornamental moulded plate of cement compression moulding is used for on-the-spot integrated poured superstructure, make the superstructure bottom after the completion that is to say that ceiling has the grid-like decoration that has anaglyph, has exempted the decoration process of ceiling.Yet the method for construction of building roof of above-mentioned made from permanent ornamental moulded plate is only applicable to integrated poured superstructure, can't be applied at present in the method for construction of building roof of a large amount of on-site consolidation hollow precast floor slabs that exist of China.

After repeatedly designing and testing, the present invention is directed to the problems referred to above on the basis that does not change existing hollow precast floor slab job practices, a kind of decorative hollow precast floor slab and manufacture method thereof are proposed.The overall economic efficiency height of the precast plate of above-mentioned decorative hollow floor, and no matter when manufacturing and on-site consolidation superstructure, all there is not specific (special) requirements, but make the ceiling after the completion have the grill-shaped decorative effect of embossment, thereby have bigger positive role reducing cost and beautifying dwelling house.

The present invention is described with reference to the accompanying drawings as follows:

Fig. 1 is the decorative hollow precast floor slab schematic diagram;

Fig. 2 is a steel bed die plan view;

Fig. 3 is the 1-1 sectional drawing of Fig. 2;

Sectional drawing when Fig. 4 is the cast precast plate.

Before making decorative hollow precast floor slab, at first to make steel bed die (1) as shown in Figures 2 and 3, this steel bed die available thickness is that 2～3 millimeters square steel sheet is made, ridge design can be designed on request on its plane, 1～3 centimetre and make it to become plate-like must be slightly scrolled up all around.For the precast plate that makes manufacturing meets the existing construction custom of China, the planar dimension of bed die should be 50～80cm usually ²Positive square, the best is 50～60cm ², so that be complementary with existing hollow pre-fabricated panels width.

When casting decorative hollow precast floor slab of the present invention, earlier complete steel bed die (1) earlier by the length and the width of precast plate, in order to save the steel bed die, can use not common bed die at the two ends of precast plate with ridge design.Install limit mould (2) by traditional conventional method then, core (3), reinforcing bar (4), concrete perfusion (as shown in the figure) again; Through making vibration firm by ramming, take out the coring mould, by after the job specfication maintenance, dismantle Bian Mo and bed die, decorative hollow floor as shown in Figure 1 prefabricated.After the precast plate of making was assembled into superstructure according to a conventional method at the scene, its ceiling need not to process nature became the grid-like decoration with anaglyph.If ceiling is had the color requirement, in addition swabbing or in cement additive color.

The manufacture method of decorative hollow precast floor slab of the present invention and utilize the job practices of this precast plate assembly unit superstructure and traditional conventional method identical, the cost that is increased is the expense of punching block, but compare with the operation such as further plaster of still needing behind the existing floor construction, then its overall economic efficiency is that the cost of every square metre of superstructure can reduce by 1.5～2.0 yuans.Owing to used precast plate of the present invention, can make the decoration form that only comes across senior public building ceiling at present enter average family, will play bigger positive role to beautifying dwelling house.

Claims

1, the mould of a kind of steel bed die with the band ridge design, common limit mould, core rod composition is cast the steel concrete decorative hollow precast floor slab that forms, and the bottom surface that is characterized as this precast plate of the present invention has and the corresponding concavo-convex impression of steel bed die ridge design.

2, by the manufacture method of the described hollow precast floor slab of claim 1, it is characterized by and before casting precast plate, complete steel bed die (1) earlier with ridge design, settle limit mould (2), core (3), reinforcing bar (4) with traditional conventional method again, concrete perfusion then, through making vibration firm by ramming, take out the coring mould, by after the job specfication maintenance, folding falls Bian Mo and bed die promptly becomes the decorative hollow precast floor slab that a bottom surface has concavo-convex impression.

3, by the steel bed die that adopts in the described method of claim 2, it is characterized by this steel bed die is to have ridge design on the face, slightly scrolls up the square punching block that is plate-like all around.

4, by the described steel bed die of claim 3, the planar dimension that it is characterized by this steel bed die is 50～80cm ²Square.