CN201460203U

CN201460203U - Concrete poured slip-form template

Info

Publication number: CN201460203U
Application number: CN 200920104399
Authority: CN
Inventors: 刘晨晞
Original assignee: China Chemical Engineering Second Construction Corp
Current assignee: China Chemical Engineering Second Construction Corp
Priority date: 2009-08-27
Filing date: 2009-08-27
Publication date: 2010-05-12
Anticipated expiration: 2019-08-27

Abstract

The utility model provides a concrete poured slip-form template used for construction work. A steel moulding plate and a low-friction silicon rubber insulated layer are arranged on two sides of the template; a neoprene foam elasticity compensation layer is arranged in the middle of the template; the template is a vertically mounted movable loop channel formed by continuously assembling steel material according to the designed shape of the cross section; and concrete is poured in the loop channel. As the neoprene foam elasticity compensation layer has the compression and rebounding compensating functions, slurry can not flow if no clearance is kept between the template and the concrete, so that the surface of the concrete can be kept smooth; as the insulated layer has a small friction resistance, the concrete cannot be cracked by tension in the process of climbing; and a polythene curing film coated on the outer side of the insulated layer can be bonded with the concrete finally, the post-stage curing can be enhanced, and the slurry can be prevented from flowing.

Description

Concrete pouring sliding formwork template

Technical field

The utility model relates to a kind of building implement, is specially the sliding formwork template that a kind of pouring concrete construction is used.

Background technology

The sliding formwork that adopts in the building operations comprises basic building blocks such as template, enclosure, lifting facility, and template adopts steel material to be shaped as the movable grooving of a up/down perforation by the continuous spelling of cross sectional shape of design.Enclosure makes template keep the shape of assembling and template and hoisting frame is connected into an integral body.During construction, under the effect that promotes facility, template can rise along vertical line, oblique line or curve are upwards sliding, water in the suitable for reading minute course grooving of concrete by template, after undermost concrete reaches certain intensity in the template, the template grooving relies on the effect that promotes facility, along the concrete wall that has watered, and one section height of upwards sliding liter.Like this, on one side in template placing of concrete, rise template is upwards sliding on one side, make the continuous demoulding of in type concrete, circulation so continuously is until the height that reaches design.Generally speaking, before whole engineering construction finished, template needn't be dismantled and re-assembly.When template promotes in slip, rely on enclosure and drive its sliding liter that makes progress along concrete surface, the main effect of template is the frictional resistance when bearing concrete lateral pressure, impact force and sliding the liter, and makes the cross sectional shape moulding of concrete by designing requirement.

In pouring concrete construction in the past, for preventing bonding, all need to brush interleaving agent between template and the concrete, brushing interleaving agent midway has the part interleaving agent to trickle to form the construction interface to the concrete joint surface of cast, influence the overall performance of concrete structure unavoidably.In addition, because the bonding of concrete and steel form, can be formed on also that concrete drawing crack influences workmanship in the sliding formwork lifting process.

The out-of-flatness of steel form is because concrete produces the impact of template and the thermal expansion of the thermogenetic volume of concrete of aquation of concrete in solidification process in the process of building, so require up-small and down-big when common sliding formwork template is installed, tip mouth difference be 4～5mm or single face angle of inclination be template length 0.2～0.5% (2.4～6mm) so that smoothly depanning.During common slding form operation, sliding formwork began to promote after concrete reached depanning, the height that promotes is generally between 250mm～350mm, template is sliding relatively when rising sliding liter of concrete surface with vertical concrete section between the gap of 1mm～2mm has just appearred, the concrete grout trickling will be arranged during concreting, so the concrete structure of slding form operation or the surface of structure all exist every more than 300 millimeters a circle trickling layer is just arranged, though unit in charge of construction all uses the plain starch brush of concrete, outward appearance is still not attractive in appearance.

Summary of the invention

Easily trickling layer, construction effect of the interface problem attractive in appearance occur with concrete binding and building surface for solving existing template, the utility model provides a kind of concrete pouring sliding formwork template that has elasticity self compensation function and can vertically construct.

The technical solution adopted in the utility model is: concrete pouring sliding formwork template, template both sides are respectively steel form and low friction silicon rubber separation layer, and the centre is that neoprene foams is mended the elastic compensating layer.

During construction, with the vertical installation of template by the movable grooving of the continuous spelling one-tenth of the cross sectional shape of design, fluid concrete in the grooving.Because neoprene foams is mended the compensating action that the elastic compensating layer has compression and resilience, there is not the generation in template and concrete gap just not have the trickling of slurries yet, so just guaranteed the bright and clean of concrete surface.Separation layer has little frictional resistance, can the drawing crack concrete during sliding the liter.

As a kind of optimized technical scheme, silicon rubber separation layer outer side covers polyethylene curing film. the final and concrete conglutination of polyethylene curing film, add and cover the effect that the polyethylene curing film had both strengthened the later stage maintenance, also prevented the slurries trickling.

The utility model is compared with common sliding formwork template has following advantage: (1) neoprene foams mend the elastic compensating layer in order to the irregularity degree on compensation steel form surface and concrete in the process of building to the impact and the thermogenetic thermal expansion of aquation of steel form, need stay template tip mouth problem when having solved the demoulding that the surface irregularity owing to steel form produces.(2) separation layer has little frictional resistance, can the drawing crack concrete during sliding the liter.(3) template is fit to vertical the installation, avoids occurring the trickling layer.(4) the final and concrete conglutination of polyethylene curing film adds and covers the effect that the polyethylene curing film had both strengthened the later stage maintenance, has also prevented the slurries trickling.

Description of drawings

Fig. 1 is the user mode schematic diagram of the utility model concrete pouring sliding formwork template.

Among the figure, the 1-steel form; The low friction of 2-silicon rubber separation layer; The 3-neoprene foams is mended elastic compensating layer 3; 4-polyethylene curing film topping; The 5-concrete; The 6-roller.

The specific embodiment

Concrete pouring sliding formwork template, template both sides are respectively steel form 1 and low friction silicon rubber separation layer 2, and the centre is that neoprene foams is mended elastic compensating layer 3.

The basic module size of steel form 1, basic raw material and quality requirement technical indicator are identical with common sliding formwork template.Adopt the moulding of 2.5-3mm steel plate cold bending, the length of template physical dimension is 1.2m, and width has five kinds of 800mm (being used for the concrete column construction), 500mm, 400mm, 300mm, 100mm.For making template have enough rigidity at 800mm 500mm and the wealthy middle angle steel that adds a L30x4 of template of 400mm, template side thickness is 33mm.

When making neoprene foams benefit elastic compensating layer 3, will need steel form 1 surface of overlay film to adopt the method for derusting by sandblasting to be polished into base metal grey gloss template convered with film earlier.On the steel form 1 that is polished to base metal grey gloss, brush the neoprene rubber cement, treat that the rubber cement surface reaches in the time of can boning the thick porosity of the 5mm that will equally also brush the bonding rubber cement and is attached on the steel form 1 and uses the roller compacting at 50% neoprene foams offset plate.The curing compound of neoprene rubber cement is a polyisocyanate fat, and the ratio of curing compound should be decided by the situation of season and temperature, finish neoprene foams after the bonding mend elastic compensating layer 3 should be with the adhesion strength of steel form 1 greater than 8kg/cm ²

When adopting silicon rubber,, be mixed and made into basic glue then in proportion with the weighing respectively of base-material, crosslinking agent and catalyzer as separation layer 2.Batch mixing process care should be used to operation is so that after the gaseous inclusions amount reaches minimum sizing material mixing, it is thick to coat 1.5mm on the neoprene foams offset plate that has posted, treats that it places certain hour at room temperature or under set point of temperature from levelling and promptly make two-component room-temperature-vulcanized one-tenth silicon rubber surface layer.Have good anti-adhesion performance after the two-component room-temperature-vulcanized silicone rubber sulfuration, shrinkage factor is minimum when adding sulfuration, therefore, is suitable for being used for making the anti-stick template.

Silicon rubber separation layer 2 outer side covers polyethylene curing film toppings 4. polyethylene curing films adopt the thick low-friction coefficient polyethylene sheeting of 0.12mm; has outstanding abrasion resistance; low-friction coefficient and higher impact strength; good anti-environmental stress and self lubricity. the polyethylene curing film twists on the Φ 25mm roller 6; the sliding formwork that roller 6 is fixed on above the template promotes on the facility; the polyethylene curing film pastes in silicon rubber separation layer 2 outsides; the static and dynamic friction coefficient of polyethylene sheeting and silicon rubber separation layer 2 contact surfaces is lower; generally between 0.2～0.4; rise the polyethylene curing film with sliding of template and be bonded in cast-in-place concrete 5 external surfaces continuously. cover low-friction coefficient polyethylene topping 4 by lining and make concrete 5 under the situation of sealing, obtain filling a part maintenance; concrete 5 frame constructions or chimney; silo class building is relatively more difficult in high-altitude watering maintenance; add and cover polyethylene film and can effectively strengthen the later stage maintenance. simultaneously, lining covers the low-friction coefficient polyethylene film can also prevent slurries trickling in concrete 5 casting process.

Claims

1. concrete pouring sliding formwork template is characterized in that: the template both sides are respectively steel form (1) and low friction silicon rubber separation layer (2), middlely are neoprene foams benefit elastic compensating layer (3).

2. concrete pouring sliding formwork template according to claim 1 is characterized in that: silicon rubber separation layer (2) outer side covers polyethylene curing film topping (4).