SU910981A1 - Horizontally sliding form for erecting circular ferroconcrete tanks - Google Patents

Description

(54) HORIZONTAL SLIDES FORMWORK FOR CONSTRUCTION OF ROUND CONCRETE TANKS

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The invention relates to construction and can be used in the construction of reinforced concrete tanks, round in plan, with varying height of wall thickness.

A horizontally sliding formwork is known, comprising a framework of columns and beams in which part of the framework columns are attached to beams directed across the wall and located at the bottom and top levels, with the possibility of moving the columns along the beams and fixing them in the desired position fl.

The disadvantage of this formwork is that it does not allow concrete walls round in terms of tanks.

It is also known horizontally as follows: 31 sha formwork for erecting rectilinear and curvilinear walls, including a framework of columns and external and internal panels with supporting elements and mechanisms of movement 23 The disadvantage of this formwork is that it does not provide an opportunity for concrete the walls of round tanks are variable in height thickness.

The purpose of the invention is to extend the technological capabilities of the formwork.

This goal is achieved by the fact that in a horizontally sliding formwork for the erection of circular iron .0.0 concrete tanks, including a skeleton of columns and beams, external and internal shields with supporting elements with fixed screws with nuts and mechanisms for moving the formwork and ps15 supporting the the elements of the outer shield are made in the form of triangular consoles, which are located on two levels along the height of the shield and are connected in pairs by vertical telescopic stands and the nuts of the fastening screws are made in the form of spherical hinges.

FIG. 1 shows a horizontally sliding formwork, front view; on

FIG. 2 - the same, side view; in fig. 3 is the same plan view; in fig. 4 - design of the tight screw.

Horizontally glanced formwork for concreting walls round in plan 5 reinforced concrete tanks with walls of varying thickness includes frame i. consisting of beams 1 with individual horizontal displacement drives 2 and balancing rolls 10 with rollers 3, rolling along an invertar track 4, four pillars 5 of box section, the bases of which are attached to the lower links 1 with hinged joints. Inside the cavity of each column is 5 yctpoeHH ladders for lifting workers to and from the scaffolding. In the upper part, all the columns are connected hingedly with the possibility of the subsequent hard-hinged 20 SRI using the best connections to the lower traverse of the cross beam 6. Along the columns, the catcher cage 7 can be moved with 8 horizontal reversible drives. The ball-holders of the ball are connected to the beams 9, which carry the inner 10 of them, the outer 11 are shalubkas with working rings and are used to fix the shield of the SHIELDS in a curved position, as well as the rigidity of the beam. To the back of the grandchildren about the shield opap n gaps deprived the rights of the spatial framework 12. to the names of the persistent 13 in the middle of the jur and {attached to the nuts from the right in the middle, inside the window P

Renewed air is dehumidified by imbalance with a hatching vapra & sing at which the rear racks approach each other, and

bulging .45

I -

Feature Ksschsruk Sh external

of the shield of the 11th avvlubk consists in the fact that the top 15 and the bottom 16 triangular connoles are welded to TOjtbKoii of its cfOfn e through equal lengths Since the upper consoles are longer than the lower cones, the PCTs are inclined to the helices at an angle of taper. The upper and lower consoles are located in the middle of the shield, welded to the rear 55 CTofikaM 17. All other upper and lower consoles are pairwise connected to each other by telescopic struts 18.

At the end of the upper and lower consoles, fastening screws 19 are mounted with nuts 20 and 21, having right and left threads, respectively, all nuts being made in the form of spherical hinges. Making the surface of the outer shield 11 of the conical formwork is carried out by separate rotation of the screws 19 in the direction in which the rear telescopic pillars 18 are moved apart. The upper tension screws must move the upper triangular arms 15 by an amount exceeding the amount of the lower triangles; consoles 16 under the action of the lower fastening screws. As a result of this, the working surface of the outer formwork becomes the resultant. It is advisable to bend the shields immediately after installation of the formwork using templates or pockets {fixed to the reinforcement of the reservoir under construction. After the curvature and exposition of the shields, their frames and upper consoles are connected to the longitudinal backs, thus providing the necessary rigidity of the shields, then working scaffolding is laid on the upper shield and the outer shield of the outer shield. The workers do not have trays (not necessary) for receiving concrete. The control panel (it is most convenient for Zlstan to pour in the working platforms on the outer side of the concrete tank at the rear column. The formwork is equipped with a monorail 22 sec telpher 23 for the delivery of betszha.

The drive is horizontally displaced, it is discrete, it is equipped with a gripping device that ensures optimal application of tractive effort, i.e., tangential to the curvature of the rail. Bent in accordance with the diameter of the reservoir. The traction drive is also equipped with a device for smoothly adjusting the speed of the formwork within 412 m / h. The frame structure formwork allows the columns 5 to rotate in a horizontal plane, thereby significantly reducing the friction of the flanges of the 3-column running wheels on the rails. The drive 8 of the vertical movement of the formwork panels is hydraulic with a constant alternate support on the horizontal shelves of the container, which completely prevents the possibility of falling working platforms The walls of the tanks concrete into the boards sliding in the horizontal direction, concreting each follower of the preceding one begins. After the laying of the formwork and the exhibition of the boards, the concreting of the first mountain begins. Rigid concrete with a draft of a cone of 1-2 cm is applied, its compaction is performed by deep vibrators. The rate of movement of the formwork depends on the time required to maintain the concrete in the panel, on the air temperature and on the length of the csMwx. vXKftA. Since the shuttering of the formwork is not uninterrupted, concreting is carried out continuously. On exit on shitskhv. Concrete rus appears under the influence of its own weight and is loaded with a concrete track after it has grown from 6 sec into the original half-chezha. a few hours cut: It is quite sufficient that the concrete of the lower sipyca, with proper care, should gather the necessary technical characteristics and be ready for an “aggresive sludge”.

When using the formwork to play the next tank, it is disassembled into two enlarged parts and, with the help of a crane, is moved to a previously prepared track.

Claims (2)

1.AgfopcKoe certificate of the USSR №172019, to. E 04 G 9/04, 1965. 2. Author's testimony of the USSR No. 396468, cl. E 04 G 11 / 2O, 1974. city / five ci i у-II (I И If If and II II l ("/ fff r I / / Ш f7f7 fS 18 t8 S Axis ffear / feeo pe / 7bs f6 11 (/ V g 7