RU2800741C1 - Precast concrete structure - Google Patents

Abstract

FIELD: weapons and military equipment.

SUBSTANCE: invention relates to fortifications for observation and firing from small arms used in particular at checkpoints, outposts in any climatic and hydrogeological conditions with fortification equipment of positions and location areas of troops in local wars and armed conflicts. Prefabricated reinforced concrete fortification structure consisting of a combat casemate equipped with an entrance, in which the combat casemate of the structure is made in the form of a hollow thick-walled cylinder with five loopholes, equipped with a covering element in the centre of the structure, located outside the cylinder with a protective wall of gabions of bulk type, fixed to the cylinder with a set, at least three attachment belts, each of which consists of two attachment points and a cable fixed in them, equipped with a tip on one side and a thrust ring on the other, each belt attachment point including a bushing placed in a hole in the cylinder wall and welded to the reinforcement of the frame of the structure for fixing the fastening belts, and also comprises a threaded rod and a bracket rigidly fixed on one side of the bushing with a swivel cable lock, support washers and a threaded rod nut, whereas the cable is passed through the brackets of the attachment points and the lattice frame of gabion walls adjacent to the structure.

EFFECT: increased protective properties of the structure against impact and explosion.

1 cl, 10 dwg

Description

The invention relates to the field of weapons and military equipment, in particular to fortifications for observation and firing from small arms, used in particular at checkpoints, checkpoints, outposts in any climatic and hydrogeological conditions with fortification equipment of positions and areas of location troops in local wars and armed conflicts.

A structure is known, an analogue is a five-hole prefabricated reinforced concrete machine-gun SPS-3M (Manual "Military fortifications", Military Publishing House, Moscow, 1984, pp. 51, 64-67) The structure is assembled from wall panels with five embrasures, floor panels and frame entry blocks. The entrance to the building is equipped with a metal protective and hermetic door DZGM.

The main disadvantages of the structure are the significant difficulty and impossibility of using the structure without sprinkling soil on the surface of the earth, as well as ensuring stability when building up the protective properties of the structure, lined with earth-bearing bags and gabions during impact.

The closest technical solution is a prefabricated reinforced concrete machine-gun structure SPS-2M - a prototype (Manual "Military fortifications", Military Publishing House, Moscow, 1984, pp. 50-51, 60-63), consisting of a combat casemate and an entrance. The combat casemate is made in the form of a monolithic three-dimensional block without a floor with three loopholes and a doorway. The entrance to the building is equipped with a metal protective and hermetic door DZGM.

The main disadvantages of the structure are low protective properties when the structure is used on the surface of the earth or partially buried when building protective properties with the help of gabions and dredging bags from bullets and fragments, as well as the inability to ensure the stability of gabions and dredging bags installed (lined) around upon impact and explosion. structures built on the surface.

The objective of the proposed technical solution is to improve the protective properties of the structure against impact and explosion.

The specified technical result is achieved by introducing into the design of a reinforced concrete structure a set of gabion fastening belts from the outside of the structure, including fastening points and a cable, moreover, the fastening node includes a bushing, a threaded rod and a bracket rigidly fixed on one side with a swivel cable lock, support washers and a threaded rod nut, while the cable is equipped with a tip on one side and a thrust ring on the other.

The essence of the proposed structure design is illustrated by the following images:

- in Fig. 1 shows a general view of a combat casemate with a covering element;

- in Fig. 2 shows a general view of a hollow thick-walled cylinder of a combat casemate;

- in Fig. 3 shows a general view of the cover element of the combat casemate;

- in Fig. 4 shows a general view of a combat casemate with a set of fastening belts;

- in Fig. 5 shows a diagram of the fastening belt assembly;

- in Fig. 6 shows the fastening belt cable;

- in Fig. 7 shows the fixation of gabions of the bulk type GNT to the combat casemate using a set of fastening belts;

- in Fig. 8 shows the procedure for fixing the tip of the cable;

- in Fig. 9 shows the fixation of the tip of the cable by turning the rod of the mount;

- in Fig. 10 shows a protective wall of gabions of bulk GNT type, fixed to a combat casemate using a set of fastening belts.

The proposed technical solution, a combat casemate (Fig. 1) consists of a hollow thick-walled cylinder 1 (Fig. 2), a cover of a combat casemate 2 (Fig. 3) and at least three fastening belts 3 (Fig. 4).

Cylinder combat casemate 1 is a monolithic reinforced concrete structure (figure 2), in the walls of which there are five loopholes 4 for observation and firing and a doorway 5, located opposite the central loophole. Technological holes 6 are located in the walls of the cylinder, including bushings 10 of attachment points, welded at the factory to the reinforcement 19 (Fig. 5) of the frame of the structure for installing a set of attachment belts 3.

Cover element combat casemate 2 (Fig. 3) is a round monolithic reinforced concrete slab with a vent 7 located in the center of the structure.

The structure includes a set of fastening belts 3 (Fig. 4), intended for fastening bulk type GNT 18 gabions (Fig. 7) of various sizes along the perimeter of the structure. Each attachment belt 3 includes attachment points 8 and cable 9.

Mounting unit 8 (Fig. 5) includes a bushing 10, a threaded rod 11 and a bracket 12 rigidly fixed on one side with a swivel lock 13 of the cable 9, support washers 14 and a nut 15 of the threaded rod 11.

The fastening cable 9 (Fig. 6) is made of metal, on the one hand it is equipped with a tip 16, on the other hand with a thrust ring 17.

To improve the protective properties of the structure on the surface of the earth, the combat casemate is lined with gabions of the bulk type GNT 18, they are fixed with fastening belts 3 and filled with soil, sand or gravel, as well as the laying of earth-bearing bags 20 (Fig. 10) around the embrasures.

The erection of a protective wall from gabions of the bulk type GNT 18 (Fig. 10) is carried out in 3 tiers, starting from the bottom, followed by bunding of the structure in the upper part.

Before filling with soil, gabions of the bulk GNT type must be connected to each other using mounting pins.

In the process of filling the gabions of the bulk GNT type with soil, it is compacted as it is filled, but at least two or three times until each section is completely backfilled, and the vertical position of the gabions is also controlled.

After the completion of the construction of the first tier, the gaps between the walls of the gabions and the structure are covered with soil.

The second tier is erected similarly to the first of the gabions of the bulk GNT type, which are fixed with fastening belts close to the structure.

The erection and fastening of the intermediate tier includes the installation of loophole boxes on the gabions of the second tier and wrapping them with earth-bearing bags in 2 rows along the perimeter of the structure.

The third tier is erected similarly to the second of the GNT bulk type gabions and is fixed by the upper fastening belt to the structure.

The embankment of the structure from above is carried out using bags filled with soil, laid on the gabions of the upper tier and the roof of the structure.

Attachment of gabions 18 is carried out as follows: after their installation to the wall of the structure, it is necessary to pass the cable of the attachment belt 9 through the brackets 12 of the attachment points 8 and the lattice frame of the adjacent wall of the gabion 18 (Fig. 7).

For a snug fit and stability in the event of an explosion to the walls of the structure, it is necessary to stretch the cable over the gabion mesh, pull and fasten the cable of the fastening belt 9 (Fig. 8). The fixation of the cable 9 is carried out on the one hand with the help of the thrust ring 17, and on the side of the tip 16 by turning the threaded rod 11 by 180° and tightening the nut 15 using a wrench (Fig. 9).

The design of the structure makes it possible, depending on the intended means of destruction, to increase the degree of protection of the structure when equipping positions and areas for conducting maneuverable combat operations.

The developed design of the set of gabion fastening belts to the combat casemate of the structure ensures the stability of the tiered additional protective structure and its non-collapse upon impact and explosion, which increases the crew protection by 1.5-1.75 times.

Claims (1)

Prefabricated reinforced concrete fortification structure, consisting of a combat casemate, equipped with an entrance, characterized in that the combat casemate of the structure is made in the form of a hollow thick-walled cylinder with five loopholes, equipped with a covering element in the center of the structure, located outside the cylinder with a protective wall of gabions of bulk type, fixed to the cylinder a set of at least three attachment belts, each of which consists of two attachment points and a cable fixed in them, equipped with a tip on one side and a thrust ring on the other, each belt attachment point including a bushing placed in a hole in the wall of the cylinder and welded to the reinforcement of the frame of the structure for fixing the fastening belts, and also contains a threaded rod and a bracket rigidly fixed on one side of the bushing with a hinged and swivel cable lock, support washers and a threaded rod nut, while the cable is passed through the brackets of the attachment points and lattice frame of gabion walls adjacent to the structure.

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