SU1511355A1 - Method and formwork for level-wise concreting of structures of column type - Google Patents

Abstract

The invention relates to the construction and can be used for the construction of separately standing columns of industrial structures and structures, bridge supports, etc. building structures. The purpose of the invention is to reduce the time of concreting and reduce labor intensity. Column formwork of any transverse shape is made of boards 1 without stiffeners necessary to absorb the pressure of uncured concrete. The role of stiffeners and clamping devices is performed by a light pneumatic motor 5 made of air-tight soft fabric filled with air. Shields 1 are made with sockets 2 in the upper part. After the completion of concreting the air, the pneumatic motor 5 rolls by turning it over the formwork panels to the next concreting floor. 2 sp.f-ly, 2 ill.

Description

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The invention relates to the construction and can be used for the construction of separately standing columns of the structures of industrial buildings and structures, bridge supports, etc. building structures.

The purpose of the invention is to reduce the time of concreting and reduce labor intensity,.

FIG. 1 shows a cross-section of two Rus formwork with a pneumatic motor; in fig. 2 - scheme for the Russian concreting of the column using the proposed formwork.

The blank for concreting the column consists of a shield 1 closed in plan, made of the required cross section for adhesion and strength of the material of the desired shape and the height equal to the height of the concrete floor. The shield 1 has, in the upper part, a supporting element — a bell 2 for supporting and fixing in it the shield of the formwork above the concrete rus. To fix shield 1 on base 3 of the structure, the basement element 4 of the future column is embedded in the latter.

The shield 1 is worn with a soft pneumatic motor 5, made of a hermetic fabric, in which the necessary working pressure Pp is maintained, which is able to withstand the pressure of freshly laid concrete or the like.

The process of concreting columns, supports of bridges and ToP, structures using the proposed formwork is as follows (Fig. 2).

On the base 3, formwork shields are installed in the exposed base element 4, having sockets 2 in the upper part, and a geometric shape is required. A pneumatic motor 5 is put on top of the boards of the formwork 1, into which compressed air is injected to the pressure required to hold the pneumatic motor by friction on the surface of the boards (holding pressure PU). (FIG. 2), At the same time, the rated working pressure is applied to the pneumatic motor, which creates a counter-pressure to the concrete.

After the concrete has set, the working pressure in the pneumatic motor 5 is reduced to holding, its pressure is Ru and the pneumatic motor 5 is permuted, rolling it by inverting it on the upper wall, having previously increased the boards of the formwork to the height of the third tier. A rated working pressure is supplied to the pneumatic motor 5, and concreting of the second gear is carried out.

After the concrete has set and set-apart the pneumatic motor 5 with a slight vertical force exceeding the weight of the pneumatic motor with air, it rolls up to an intermediate position between the second and third concrete layers in order to remove the shields of the first russ formwork and rewire them to the fourth rus

Then, the pneumatic actuator 5 moves to a new operating position on the third tier. In it, the pressure rises to the design worker and -.- concreting the third floor of the structure is performed.

The upper boards 1 of the formwork serve as a guide for the pneumatic motor 5 and at one time are a support and fixer for the subsequent installation of the boards 1 ... of the formwork, thus preserving the design geometry of the erected structure.

The process is repeated until the structure is concreted to a predetermined height.

Claims (1)

1. A method for clear concreting of building structures such as columns, including installation of formwork panels and rigidity elements, concreting.e, transferring stiffeners to leach, dismantling and rearranging formwork boards to overlying Rus after the concrete has reached a given strength, about a liter - due to the fact that, in order to reduce the time of concreting and laboriousness, they install rigidity elements in the form of a pneumatic motor on the boards of the formwork, increase the pressure in the pneumatic motor to the design worker, and Vani tier mount additional formwork panels vpaelezhaschego tier, while achieving predetermined strength concrete reduces the pressure in the air motor to the holding and making permutation pneumomotor t, rolling it on the formwork panels to the overlying concrete concreting, then the process is repeated until the building structures are concreted to a predetermined height. 2, Formwork for concrete concreting of building structures of the type of columns, including formwork shields arranged in rus one above the other to form a closed contour in plan, stiffeners, characterized in that the formwork housings are made with sockets located in the level of the next higher tiers, and the stiffness elements are made in the form of a pneumatic motor mounted on the formwork shields with the possibility of rolling it upside down on the overlying floor formwork shields.