CN85106092A

CN85106092A - Concrete grouting method of hollow slab in site

Info

Publication number: CN85106092A
Application number: CN 85106092
Authority: CN
Inventors: 任华国
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-08-05
Filing date: 1985-08-05
Publication date: 1986-07-02

Abstract

A kind of cassette ceiling component on site construction method.The invention belongs to the floor slab construction field.The present invention proposes a kind of job practices and corresponding punching block system thereof of cassette ceiling cast-in-place concrete, and the punching block system comprises front mould, back mould side form and makes floor produce the core rod of hollow pipe.Earlier installs above-mentioned punching block before the cast at the scene that installs floor bottom mould, treat that concrete pouring finishes after, extract core rod out, promptly become the cassette ceiling of a monolithic cast-in-site.

Description

Concrete grouting method of hollow slab in site

The invention belongs to site operation field, floor roof.

Risen the construction business of apartment-type residential building at present in China, these residential building numbers of plies differ, and short person is 5～6 layers, and Gao Zheke reaches tens layers.The job practices of floor and quality determine one of principal element of building cost and quality often in the construction of residential building.For weight reduction and reduction cost, existing floor slab construction mostly adopts on-site consolidation to give the method for system cassette ceiling.Yet the floor of this method manufacturing, owing to there is piece, soundproof effect is relatively poor, special seepy question between piece more is difficult to resolve determines.Owing to the freight charges that give the system floor are more expensive, obviously increased the cost of building on the other hand.Except the on-site consolidation cassette ceiling, the floor of most of cast-in-sites all adopts monolithic to water solid floor entirely owing to execution conditions and custom reason.The result who does like this, because floor is integrated poured, water-proof function is better than on-site consolidation, has also saved freight, but has increased the deadweight and the cost of building simultaneously.German patent DE 2652095 has proposed a kind of method of cast-in-site cassette ceiling, is characterized in utilizing reinforcing bar and other annex, gives and determines pouring section and hollow parts earlier.Therefore comparatively complicated in the construction, the less apartment type house of also inapplicable area.

The present invention is directed to the present apartment type house construction status of China, propose a kind of cassette ceiling cast-in-place method.After using method of the present invention, the work of moving of system floor can be avoided giving, and the sound insulation leak resistance of floor can also be improved.

Implement when of the present invention, can at first install tool-typed formwork proposed by the invention and hollow core rod on the scene of floor bottom mould installing by shown in Figure 1.By the length of designing requirement decision front mould (1), back mould (2), side form (3) and the diameter and the length of height and core rod (4), then the projection of front mould and back mould is partly stretched into the hole of side form earlier.With being connected of gad locking back mould and side form, again core rod being passed the circular hole that the circular hole of front mould makes core rod afterbody tip stretch into the back mould and locate.When the tool-type punching block installs, pour into a mould Hun Ning Tu And plane vibration tamping tool vibration tamping then.Wait to make firm by ramming and finish, after initial set finished, available steel rod inserted the small sircle hole of the die core front end that stays the front mould outside, rotated after steel rod rotates core rod slightly, can pull out core rod through the front mould circular hole easily, and good floor becomes the monolithic cassette ceiling and make cast.

The tool-type punching block system that the present invention proposes is by front mould (1), back mould (2), side form (3) and tubulose core rod four kinds of main punching blocks such as (4).

As shown in Figure 2, front mould can be made by general steel plate two edge axis parallel directions angle steel or the channel-section steel of having clipped a wing of respectively burn-oning, the belly of front mould is drilled with the circular hole that the aperture is slightly larger than the tubular mold core diameter, the spacing in each circular hole center of circle should be decided according to the design of floor, and should there be the protuberance that can mate with the hole of side form end at the two ends of front mould.Front mould can be that the general steel plate of 8～14mm is made with thickness also.

Back mould can be that the general steel plate of 8～4mm is made with thickness, also can make with channel-section steel.As shown in Figure 3, back mould belly is drilled with the circular hole that the aperture is slightly larger than the bar-shaped steel pole diameter of core rod afterbody, and the arrangement in each circular hole center of circle should be corresponding with the center of circle of front mould.There is the protuberance in crack with holes at back mould two ends, this protuberance should with the hole of side form other end coupling, the hole on the protuberance can insert the gad that general steel plate is made, to lock being connected of back mould and side form.

As shown in Figure 4, side form can be made of channel-section steel, and the two ends of side form are welded with general steel plate with holes, and the protuberance of mould stretched into before and after the size in hole must be able to make.

As shown in Figure 5, core rod system is made by seamless steel pipe, and the front end of this steel pipe is drilled with aperture, can insert rod iron and rotate and spur core rod, and the afterbody of steel pipe is processed into bar-shaped steel pole to insert the circular hole of back mould, and the length of bar-shaped steel pole must be greater than 100mm.

Because the method for cassette ceiling cast-in-site provided by the present invention has been eliminated the transport of giving making sheet, has saved freight charges, has particularly eliminated loss in transit. Therefore give cassette ceiling processed with on-site consolidation and compare, method provided by the invention will reduce cost significantly, increase labor productivity. Again because cast-in-site can reduce stud and the distributing reinforcement of floor, and give making sheet and compare and to save 10% of stud and distributing reinforcement consumption.

Because adopt whole cast-in-site, the sound insulation water resistance of cassette ceiling will be better than the floor of pin-connected panel, the bigger service property (quality) that improved.

Above-mentioned job practices as cooperate also be propose by the inventor and apply for " the step-less adjustment steel truss " and " support of step-less adjustment plane steel " of utility model patent on the same day with the present invention, can improve the quality of cassette ceiling effectively.

Description of drawings

1, cassette ceiling site operation schematic diagram;

2, front mould figure;

3, back mould figure;

4, side form figure;

5, core rod figure.

Claims

1, a kind of reinforced concrete hollow floor cast-in-place concrete method, the invention is characterized in and utilize a cover can make the floor middle part form the tool-type punching block that comprises a kind of tubulose core rod of hollow pipe, after utilizing this tool-type punching block cast-in-place concrete, extract above-mentioned core rod out and become a kind of monolithic reinforced-concrete cassette ceiling of cast-in-site.

2, a kind of tool-type punching block that is exclusively used in above-mentioned cast-in-site cassette ceiling, it is characterized by this punching block and comprise that two ends have the back mould of projection, two ends have the front mould of projection and the side form that two two ends have the hole that can be complementary with the projection of back mould and front mould, the belly of above-mentioned caudacoria is drilled with the circular hole that a row can supply tubulose core rod tail end to stretch into, the belly of above-mentioned front mould is drilled with its slightly larger in diameter that a row can pass through for core rod in the circular hole of core rod diameter, at the on-the-spot upright good back of floor slab construction mould, front mould and side mould And stretch into the front mould circular hole to the tubulose core rod, promptly become the complete tool-type punching block to be cast of a cover after the tail end of core rod stretches into behind the circular hole location of mould:

3, by the described punching block of claim 2, front mould wherein is welded by general steel plate and two angle steel that cut out a wing.

4, by the described punching block of claim 2, back mould is wherein made by general steel plate.

5, by the described punching block of claim 2, side form is wherein made by channel-section steel.

6, by the described punching block of claim 2, core rod is wherein made by seamless steel pipe, and the tail end of this seamless steel pipe is a bar-shaped steel pole, and the front end of seamless steel pipe has can be for the aperture of steel rod insertion.