RU2668105C2 - Method for manufacturing monolithic reinforced concrete columns and pylons with cylindrical voids and hardness disks with the use of non-removable tubular cardboard-polyethylene void formers - Google Patents

Abstract

FIELD: construction.SUBSTANCE: invention relates to construction. Proposed is a method for manufacturing monolithic reinforced concrete columns and pylons with cylindrical voids and hardness disks, with the use of non-removable tubular cardboard-polyethylene void formers, which are cardboard tubes of circular cross-section covered with waterproofing polyethylene film of 0.045 mm, with cardboard-polyethylene caps at the ends. Reinforcing elements and void formers of the first layer are installed, on top thereof the hardness disk reinforcement is mounted. Reinforcement and void-formers are fixed with binding wire, concrete pads and inventory fixators. External formwork is further arranged and concrete is laid on the height of one void former and reinforced concrete hardness disk. Void formers, hardness disk reinforcement are installed, outer formwork is increased and the next layer is concreted.EFFECT: technical result is the reduced flexibility of elements and increased bearing capacity.1 cl, 8 dwg

Description

The technical field to which the invention relates: construction.

The level of technology. Reducing the weight of monolithic reinforced concrete columns and pylons and increasing their rigidity are still the most important tasks in the construction of buildings and structures. To solve these problems, the present invention provides a method for the manufacture of monolithic reinforced concrete columns and pylons with cylindrical voids and stiffness disks, using non-removable tubular cardboard-polyethylene hollow formers.

The closest analogue of this invention is a method of manufacturing a monolithic reinforced concrete beam floor slabs with round voids, using non-removable cardboard-polyethylene hollow formers [1], however, this method does not take into account the features of the manufacture of vertical load-bearing reinforced concrete structures and does not provide for the installation of stiffness disks. Other analogues include: a method of manufacturing in various types of formwork of columns, pipes, supports of power lines and racks of annular cross-section, as well as the manufacture of the same hollow prefabricated structures by centrifugation [2, 3]. The disadvantage of these solutions, in comparison with the proposed invention, are technological difficulties in the construction of voids, the absence of stiffeners, and these structures are manufactured mainly in the factory in a prefabricated version.

Disclosure of the invention.

SUMMARY OF THE INVENTION A method of manufacturing monolithic reinforced concrete columns and pylons with cylindrical voids and stiffeners, using non-removable tubular cardboard-polyethylene void formers is that, the use of cardboard-polyethylene void formers 1, allows you to create voids and disks in monolithic reinforced concrete columns and pylons (hereinafter referred to as elements) stiffness 2.

The technical result consists in the fact that when creating voids, it is possible to reduce the consumption of concrete or increase the cross-section of the elements with a slight increase in the consumption of transverse reinforcement, and the creation of reinforced concrete disks increases the rigidity of structures (ie, reduces the flexibility of the elements) [4]; this increases the bearing capacity of both columns and pylons, and the building as a whole.

Brief Description of the Drawings

In FIG. 1 shows a fragment of a monolithic reinforced concrete void column of circular cross section with non-removable tubular corton-polyethylene void formers I and with stiffeners 2. In FIG. 2 shows a section through a column A-A. In FIG. 3 shows a cross-section BB made at the installation site of a tubular non-removable cardboard and polyethylene core former. In FIG. 4 shows a cross-section BB at the location of the reinforced concrete disk of stiffness. In FIG. 5 shows a cross-sectional square section of a column with one of the installation options for non-removable tubular cardboard-polyethylene void formers. In FIG. 6 and 7 show cross-sections of the pylon as possible installation options for non-removable cardboard-polyethylene hollow formers. In FIG. 8 shows a rectangular cross-section of a column with one of the installation options for non-removable tubular cardboard-polyethylene void formers.

Reinforced concrete stiffness disks for the elements shown in figures 5, 6, 7 and 8 are made by analogy with the stiffness disks of the columns shown in figures 1, 2, 4. The implementation of the invention

1. The configuration and dimensions of the elements, their reinforced concrete disks of stiffness and non-removable tubular cardboard-polyethylene hollow formers are determined by the designers in the design and calculation of the elements.

2. At the factory, according to the application of the builders, in accordance with the working drawings, hollow formers 1 are made of round-section cardboard pipes coated with a waterproofing plastic film with a thickness of 0, 045 mm with cardboard and plastic covers at the ends of the pipes, after which the hollow formers are delivered to the construction pad.

3. The reinforcement of the elements and the first tier of the hollow core 1; on top of the void formers, in accordance with the project, the reinforcement of the stiffness disk is installed.

4. The reinforcement and core formers are fixed with knitting wire, concrete gaskets and inventory clamps.

6. The outer formwork is installed.

7. The quality of the materials used and the quality of the installation of fittings, hollow formers and formwork are checked.

8. An act is drawn up on performed hidden work.

9. After obtaining permission to carry out concrete work, installation of inventory sites for placing concrete workers and their tools is carried out, concrete is laid from these sites to the height of one hollow core and a reinforced concrete hard disk, then the next hollow core is formed, reinforcement of the hard disk, the outer formwork is built up and concreting, etc

10. Production of elements, maintenance of concrete, time for dismantling the formwork, are carried out in accordance with the project of the work taking into account weather conditions.

Information sources

1. Patent for the invention RU 2634156 C2, 2015.10.14. Author: Pushkarev Boris Alexandrovich. RU.

2. Reinforced concrete structures: a textbook. 5th ed., Revised. and add. / Baykov V.N., Sigalov E.V. - M.: Stroyizdat, 1991 - 769 s: ill., P. 181.

3. Technology of precast concrete products: Textbook Trofimov B.Ya., - St. Petersburg: Publishing House. "Doe", 2014. - 384 p., Ill., P. 187. (Textbooks for universities. Special literature).

4. Design and calculation of reinforced concrete structures: Textbook. allowance for builds, special. universities. Popov N.N., Zabegaev A.V., - M .: Higher. Shk. 1985 .-- 319 p., Ill., P. 93.

Claims (1)

A method of manufacturing monolithic reinforced concrete columns and pylons with cylindrical voids and stiffening disks, using non-removable tubular cardboard and polyethylene hollow formers, which are cardboard tubes of circular cross section, coated with a waterproofing plastic film with a thickness of 0.045 mm, with cardboard and plastic covers at the ends, characterized in that install reinforcing elements and hollow formers of the first tier, on top of which they install reinforcement of the stiffness disk, fix the reinforcement ru blockouts and binding wire, concrete pads and inventory clamps, then arrange the outer formwork and fresh concrete to a height of one inside core and concrete of the disk, and then install blockouts, reinforcement of the disk, increasing the external formwork and concreting perform the next stage.

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