SU1148925A1 - Method of constructing concrete structures - Google Patents

Abstract

I. METHOD OF CONSTRUCTION OF CONCRETE STRUCTURES, including laying concrete in horizontal layers and the subsequent formation of deformation shvi, after a concrete set of minimum strength, characterized in that, in order to reduce labor-intensive work, a flexible cutting an element made in the form of a cable, one of the ends of which is fixed motionless, and the shchi are formed by pulling concreting block over the thickness of the block rvonachalno unattached end of the cable, carried by the traction emym working member mounted on the part of the fixed end of the cable. 2. A method according to claim 1, characterized in that the cable, when pulled through the thickness of the concrete block, is vibrated.

Description

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ISD 01

The invention relates to the construction and can be used in the construction of massive concrete structures.

There is a known method of erecting concrete structures, including the laying of concrete into separate blocks, into which the structure is divided using formwork, which later forms the expansion joints of the structure 1.

However, this method eliminates the possibility of increasing the productivity of concrete work due to the limited size of concrete blocks, considerable labor costs for installation, and in the case of using wooden shields, also for dismantling the formwork.

The closest to the invention by its technical nature is a method of erecting concrete structures, including laying concrete in horizontal layers and the subsequent formation of concrete joints after concrete is set to a minimum strength. When this deformation of the seams are formed by cutting gaining the minimum strength of concrete with vibrators 2.

The disadvantages of the known method are the considerable labor costs associated with the need to use heavy and energy-intensive equipment in the formation of expansion joints.

The purpose of the invention is to reduce the complexity of the work.

This goal is achieved by pre-concreting a block at the base of a flexible cutting element, made in the form of a cable, one of the ends of which is fixedly fixed, before concreting the block into its base. A seam is formed by pulling over the thickness of the block of concreting along the line of an expansion seam of the originally unsecured end of the cable, carried out by means of a pulling tool mounted on the side of the fixed end of the cable.

When pulling through the thickness of the block, the cable is subjected to vibration.

FIG. I shows a section of the dam before starting to lay the next layer of concrete, a cross-section; in fig. 2 - then

after laying a layer of concrete, cross section; in fig. 3 is the same in the process of extracting a flexible element, a cross-section; FIG. 4 shows section A-A in FIG. 3 (cross-section over a concreted layer with a formed deformation seam).

The method is carried out as follows.

In the long block 1 prepared for stacking of the next layer of concrete, a flexible cutting element 2, made in the form of a cable, one end of which is attached to the anchor 3, is placed along the base of the future expansion joint, and a layer 4 of concrete of a certain thickness is laid and organ 5 for the free end is removed from

5 of freshly laid concrete, which has gained minimal strength, is a flexible cutting element, during the pulling of which the deformation grooves 6 are formed. To facilitate the process of pulling the cable along the concrete, it is subjected to vibration, which allows using less powerful traction devices.

The invention makes it possible to cut deformation joints in a concrete structure with minimal effort and to ensure the conditions of a high-speed flow technology of concreting.

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Claims (2)

1. METHOD OF CONSTRUCTION OF CONCRETE STRUCTURES, including laying concrete in horizontal layers and subsequent formation of expansion joints, after concrete has been set to minimum strength, characterized in that, in order to reduce the laboriousness of work, a flexible cutting element is laid before concreting the block at the base along the line of expansion joints made in the form of a cable, one of the ends of which is fixed motionless, and the seam is formed by drawing over the thickness of the concrete block along the line of the expansion joint of the first cial unattached end of the cable, carried out by means of traction working member mounted on the part of the fixed end of the cable. 2. The method according to π. 1, characterized in that the cable when pulled through the thickness of the concrete block is subjected to vibration. § Λ 2 / / - / QO SO yo Xi