RU174308U1 - Flexible concrete slab with connection loops - Google Patents

Abstract

The device relates to the field of construction. A flexible concrete slab contains concrete blocks, flexible joints and connecting loops. Blocks are connected in order and in rows by means of flexible connections in a rectangular cloth. Connecting loops are placed on the edges of the plate. At least four connecting loops are located axisymmetrically. The material and dimensions of the loops are selected from the condition for the connection to be twisted. An increase in the processability of joining flexible concrete slabs with the formation of a protective coating was achieved. 7 c.p. f-ly, 13 ill.

Description

The utility model relates to the field of construction, namely to universal protective concrete coatings of a modular type. The technical solution can find application mainly in the strengthening or weighting of hydraulic structures and engineering structures, in particular, underwater pipelines, to protect them from erosion by water flows and from external influences, including percussion. In addition, the device is applicable to strengthen and protect the slopes of quarries and embankments from soil erosion, as well as to create road surfaces, including temporary ones.

Modular universal protective coatings made of flexible concrete slabs are widely used. A flexible concrete slab containing concrete blocks, flexible joints and connecting loops is known from patent document RU 112213 U1 of 01/10/2012. In the known plate, the blocks are connected in order and in rows by means of flexible connections in a rectangular cloth, while the connecting loops are placed asymmetrically at the edges of the plate. To connect the plates of known construction and thus form a protective coating, the connecting loops are superimposed on each other, and their connection is secured with piles of anchor type. However, due to the asymmetrical arrangement of the connecting loops at the edges of the plate, the known technical solution requires observing a certain order of laying the plates on the underlying surface, since otherwise it would be extremely difficult or even impossible to lay the connecting loops on top of each other to connect them. The need to comply with a certain order of laying of known plates leads to additional time and effort of installation workers, which can adversely affect the quality and speed of construction of the protective coating. In addition to the indicated drawback of the known device, the connection of loops with fixators of a pile-anchor type often does not provide the required operational performance of the protective coating, including the reliability of the connection of plates experiencing high loads, for example, in the event of floods.

The technical problem to be solved is an increase in the speed of creating protective modular coatings from flexible concrete slabs and a decrease in the laboriousness of the installation work that is being carried out.

The technical result provided by this useful model is to increase the general manufacturability of the construction of protective coatings, which is associated both with an increase in the manufacturability of flexible concrete slabs and an increase in the manufacturability of their design. At the same time, manufacturability is understood as a complex characteristic that expresses, inter alia, the convenience, simplicity, and speed of creating a coating as a whole and its modules, as well as operational qualities.

The technical result is achieved due to the fact that in a flexible concrete slab containing concrete blocks, flexible ties and connecting loops, in which these blocks are connected in order and in rows by means of flexible ties in a rectangular cloth, and the connecting loops are placed at least on the edges of the slab four connecting loops from among the indicated are arranged axisymmetrically, moreover, the material and dimensions of these loops are selected from the condition for the loops to be twisted together.

In the particular case, all the loops are located opposite each other so that the plate is centrally symmetrical.

In another particular case, four connecting loops located axisymmetrically are located on different sides from the longitudinal and transverse axes of the plate.

Also in the particular case, the connecting loops are partially overlapping each other.

In another particular case, predominantly all connecting loops, that is, more than half of their total number, are located overlapping each other by at least 25% in the width of the loops.

In the particular case, the sizes of mainly all the connecting loops satisfy the relation (1).

where H is the maximum length of the connecting loop (in tension);

W is the width of the same loop.

In another particular case, axisymmetric connecting loops and flexible connections are sections of one or two reinforcing ropes.

The utility model is illustrated by the following drawings.

FIG. 1: a flexible concrete slab known in the art.

FIG. 2: front view of a flexible concrete slab structure.

FIG. 3: Layout of a rope in a forming tool, plan view.

FIG. 4 and 5: placement options of known boards in the formation of a protective coating, plan view.

FIG. 6: flexible concrete slab with double connecting loops, plan view.

FIG. 7: flexible concrete slab with symmetrically arranged connecting loops, plan view.

FIG. 8: twisting of the connecting loops of the mating plates.

FIG. 9-13: sequence of twisting of the connecting loops.

Depicted in FIG. 1, a flexible concrete slab of known construction is formed of blocks 1, which function as protective elements in the coating, and also contains connecting loops 2 necessary for forming a coating of the slabs. Blocks 1 have the shape of truncated bipyramids, are cast from concrete and connected to each other in order and in rows by means of flexible connections 3, which are sections of the reinforcing rope 4, monolithic in blocks 1 (Fig. 2) in the manufacture of the slab. The plate canvas has a generally rectangular shape in plan. The connecting loops 2 are formed by the outlets of the rope 4 along the edges of the plate.

To connect the blocks 1 and the formation of the connecting loops 2, the rope 4 in the manufacture of the known plate is laid in the forming tool 5 so that it passes through the center of each pyramidal cell, while the condition of axisymmetric arrangement of the loops 2 in the plate is not observed (Fig. 3).

Due to the lack of axial symmetry of the location of the loops 2 relative to the longitudinal axis of the plate with the same placement of the plates on the underlying surface, it is impossible to overlay the connecting loops of one plate over the connecting loops of another plate (Fig. 4) for their mutual twisting. To achieve the indicated overlapping of the loops 2 of two plates, one of them must be rotated 180 ° on the surface (Fig. 5), spending time and effort to control the position or turn the plate.

The implementation of this utility model is shown in the following examples of the constructive implementation of the device.

According to the utility model, a flexible concrete slab also generally consists of a rectangular cloth and contains concrete blocks 1, flexible connections and connecting loops 2 placed along the edges of the slab, that is, within the outer row of blocks 1. Moreover, instead of one rope 4, it is used in forming equipment 5 at the stage of plate manufacturing, two such ropes are laid, which makes it possible to cover almost the entire perimeter of the plate with double loops (Fig. 6). In another example of performing a utility model, when laying a single rope in a snap 5, additional loops 2 are created from it, as a result of which several adjacent loops 2 of the slab are located almost without a gap in plan or even with mutual overlap (Fig. 7).

Depicted in FIG. 6 and 7, examples of plates contain axisymmetrically arranged loops 2. The symmetry of loops 2 is determined by the location of the ends of the loops in symmetrically located blocks 1. In particular, loops 21, 22 are located symmetrically relative to the longitudinal axis of the plate A-A, the position of loops 23, 25 is also symmetrical 24, 26. With respect to the transverse axis of the plate BB, in particular, loops 21 and 25, as well as 22 and 26, are symmetrically located. Shown in FIG. 6, the plate is centrally symmetrical, since all its loops 2 are located opposite each other relative to the intersection point of the longitudinal AA and transverse BB axis of the plate.

For the formation of loops 2 use a rope 4 with a diameter of 8-30 mm, preferably of non-metallic synthetic material. Moreover, the diameter and flexibility of the ropes is chosen not only on the basis of the geometric characteristics of blocks 1 required during operation, but also on the condition of twisting the loops together using the usual calculations for such conditions.

The protection of the underlying surface is as follows.

Flexible concrete slabs are spread on the surface. To do this, move the first plate to the installation site, lifting it by the hinges 2. Then, in the same way, place the second plate, side by side with the first, without shifting, which is brought closer to the first plate and lowered so that the loops 2 of the first and second plates are located on the possibilities are exactly opposite each other, and the gaps between the blocks of 1 adjacent plates had the smallest possible value. The loops 2 of one plate are laid over the loops of an adjacent plate with the formation of their common hole, sufficient to form a twist of the loops 2 using the rod 6 (Fig. 8). To do this, through the common hole of the combined loops 2, a rod 6 is passed, which is lowered from top to bottom (Fig. 9), without bringing its end to the underlying surface, so as not to limit the subsequent movements of the rod 6 to engage with it. Then, the rod 6 is rotated in the longitudinal section of the loops 2, acting as a lever, towards one or the other plate so that the mounting loops 2 begin to twist with each other (Fig. 10). After the rod 6 has taken a horizontal position, it is pushed through the crosshairs of the loops 2, making translational movement along the axis of the rod 6 (Fig. 11) to the opposite extreme position. Then the rod 6 again act as a lever and raise it to a vertical position (Fig. 12). The spinning of the rod 6 is repeated 3-7 times, tightly twisting the loops 2 between them to select the free sagging of the loops 2 and create their tension (Fig. 13). As a result, the loops 2 are twisted together and form a twist of loops 2 connecting two mating plates.

To improve the processability of joining flexible concrete slabs during the formation of a protective coating, it is sufficient to make slabs with at least four axisymmetrically arranged connecting loops, since there is no need to strictly observe the orientation of the slabs in the loops. The manufacturability of the connection is also ensured by the choice of material and size of the connecting loops from the condition of the connection of the loops of the adjacent plates by twisting, which allows to achieve high stability of the connection, which is one of the main for protective coatings of this type of operational quality.

More technological plates with four axisymmetric connecting loops located on opposite sides of the longitudinal AA and transverse BB axis of the plate (21, 22, 25 and 26 in Fig. 7), since this is the minimum required number of loops to form a reliable two-point connection plates.

The most technologically advanced protective coating is made of centrally symmetric plates, since at the same time the installation worker has the opportunity to create a connection of plates in almost any suitable place.

The connection of the plates is simplified, and the processability is increased if the connecting loops are partially overlapping each other, which allows the installer to use a suitable loop. To do this, it is advisable to make plates in which mainly all the connecting loops are located overlapping each other by at least 25% of the width W of the loops.

The simplicity of the formation of the connection of loops by twisting, and therefore the manufacturability of the connection, depends on the length H of the loops. In practice, it has been established that the fulfillment of condition (1) is sufficient for twisting the loops 3-7 times and creating a reliable connection of the plates.

Improving the adaptability of the design of a flexible concrete slab is ensured by the implementation of both axisymmetric connecting loops and flexible connections from one or two reinforcing ropes, which gives the slab design simplicity and reliability due to the absence of unnecessary elements and the high strength of the reinforcing rope or ropes that determine the strength of the entire structure.

Claims (8)

1. A flexible concrete slab containing concrete blocks, flexible ties and connecting loops, in which these blocks are connected in order and in rows by means of flexible ties in a rectangular cloth, connecting loops are placed at the edges of the slab, characterized in that at least four connecting loops among these, they are arranged axisymmetrically, and the material and dimensions of these loops are selected from the condition for the connection of the loops by twisting. 2. The plate according to claim 1, characterized in that all the loops are located opposite each other so that the plate is centrally symmetric. 3. The plate according to claim 1, characterized in that the four connecting loops located axisymmetrically are located on opposite sides from the longitudinal and transverse axes of the plate. 4. The plate according to claim 1, characterized in that the connecting loops are partially overlapping each other. 5. The plate according to claim 4, characterized in that mainly all the connecting loops are located overlapping each other by at least 25% of the width of the loops. 6. The plate according to claim 1, characterized in that H> 1.5W, where H is the maximum length of the connecting loop, and W is its width. 7. The plate according to claim 1, characterized in that the axisymmetric connecting loops and flexible connections are sections of one reinforcing rope. 8. The plate according to claim 1, characterized in that the axisymmetric connecting loops and flexible connections are sections of two reinforcing ropes.

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