RU46762U1 - LOCKING DEVICE FOR ROAD AND PAVING PLATES - Google Patents

Description

Table of contents

1. The technical field to which the utility model relates.

2. The prior art.

3. Disclosure of a utility model.

4. A brief description of the drawings.

5. Implementation of a utility model.

1. The technical field to which the utility model relates.

The fixing device for road and paving concrete slabs is designed to fix road and paving slabs relative to each other, to ensure a flat road surface at the joints, to ensure a constant gap between the plates, both on a flat surface and in the presence of a slope of the roadway in a vertical plane. It is used in road construction with precast concrete roads and pavements. When laying concrete slabs, the fixing device aligns the upper edges of the slabs, which eliminates the protrusions or dips of the adjacent concrete slabs at their joints.

2. The level of technology

Analogs of the fixing device are:

Reinforced concrete slab precast airfield or pavement

Applicant Name Mari State Technical University

The name of the inventor Chernyakevich Victor Iosifovich

The name of the inventor Pushkarenko Nikolay Nikolaevich

Registration number of the application 2001134465/03

Application Date 2001.12.17

Application publication date 2004.02.20

IPC revision number 7

The basic index of the IPC E 01 C 5/00

The basic index of the IPC E 01 C 5/06

Prefabricated pavement for roads and park paths

Applicant's name A. Popov

The name of the inventor Polov A.F.

Registration number of the application 96117165/03

Application Date 1996.08.20

Application publication date 1998.11.27

IPC revision number 6

The basic index of the IPC E 01 C 5/06

Analogues of the construction of prefabricated coatings for airfields and roads allow the use of slabs in only one plane. The presence of curvature in the vertical plane (descent or ascent) does not provide a flat road surface due to the fact that the proposed, convex, polygon shapes (triangle, square, etc.) in the presence of an angle between the plates are not included in the intended recesses. Therefore, the proposed assembly options have not received practical application.

This disadvantage can be eliminated only in one case, if the protrusion and the recess are made in the form of a sector in cross section. The design of the proposed fixing device is based on the possibility of rotation of the plates relative to each other along the axis of the connection, along the upper edge.

The proposed fixing device "binds" the adjacent plates, which turns the roadway into a solid monolithic structure with a smooth, operated

surface, even in areas of ascent or descent of the road (sidewalk). This will increase the evenness of the road surface, laid out of concrete slabs and bring it closer to the level of paved roads, and the advantages characteristic of concrete products will significantly improve the road’s performance and significantly increase the maintenance-free life of the road.

3. Disclosure of utility model

(1) Information revealing the essence of a utility model.

The fixing device is intended for the technical solution of ensuring a smooth road surface laid out of concrete slabs, including sections of roads with slopes in the vertical plane. Technically executed by supplementing the shape of concrete slabs with protrusions and indentations at the ends of a sector-shaped form (Figs. 1-5). The ends of the slabs, on which the protrusions and recesses are made, should not be executed vertically, but with an angle of 5 degrees, for a snug fit of the upper edges of the slabs when sloping the roadbed.

The main distinguishing features:

- The plane of the ends of the plates are made with an angle of inclination of 5 degrees from the vertical;

- The protrusion and the recess are made in the form of a sector in cross section, elongated along the end of the plate;

- Deepening is performed taking into account the possible additional course of the ledge of the plate, with a downward path of the road (up to 10 degrees);

- When laying, the plate is brought at an angle, circular rotation with the center, along the upper edge of the axis of the joining of the plates.

- Small tolerances of deviations from the design dimensions of the slab, as well as the need to apply the slab not horizontally, but at an angle, require high accuracy when performing assembly work. To simplify the operation of road plates, it is recommended to use leveling joints located at the corners of the plates. The locking device allows you to:

- align the upper edges of the plates at their joints both on a flat road and in the presence of curvature in a vertical plane;

- provide a constant gap between the plates;

- to exclude loosening of the plate during operation (Fig);

- reduce the specific pressure per unit area of the soil due to the distribution of part of the weight of the load on adjacent plates (11);

- eliminate plate displacement along the axis of the road due to the presence of curvature on the working surfaces of the protrusion and recess.

(1.2) The problem to which the utility model is directed. Ensuring a flat surface of the road (sidewalk) and the same amount of clearance between the slabs, both with a flat surface and with curvature of the road in a vertical plane, in the areas of descent and ascent. This is ensured by the proposed structural elements:

- the protrusion and the recess are made in the form of a sector in cross section;

- the recess is made taking into account the possible additional course of the ledge of the plate, with a downward path of the road;

- the plane of the edge of the plate has a slope of 5 degrees from the vertical.

- the center of the sector of the recess is made by the size of the gap between the plates, from the upper edge of the plate.

(2) Features used to characterize a utility model.

The locking device is made in the form of alternating protrusions and recesses (Fig.1, 2, 3, 4), made in the form of a sector in cross section, the radius of which is equal to half the thickness of the plate. When assembling the pavement, the pita protrusions in a circular rotation go into the provided recesses and rigidly bind the concrete slabs, which eliminates the displacement of one slab relative to another (Fig.6 and 7). The permissible deviation angle between the planes of the plates is up to 10 degrees. Alternating protrusions and recesses are located on the end faces of the plate along a line equal to half the thickness of the plate. The number and length of protrusions and recesses depends on the size of the plate. The fixing device is made of the same material as the concrete slab at the time of its production (casting).

4. A brief description of the drawings.

To explain the shape and operation of the fixing device, attached are diagrams and drawings of the section of the fixing device, its location on a concrete slab, load distribution, laying procedure. A total of 16 circuits are applied:

Figure 1. Drawing protrusion and recesses of the locking device.

Figure 2. Cross section of the protrusion. The protrusion is executed in the form of a sector, with the center of the circle at the extreme end line of the plate. The radius is half the thickness of the plate. R = 0.5B. The sector angle is 50 degrees. The base of the sector is reinforced with reinforcement.

Figure 3. Cross section of a recess for a protrusion. It is executed in the form of a sector with an angle of 50 degrees with the center of a circle in the extreme end line of the plate. The center of the circle is offset by the gap between the plates (T). The lower base of the recess protrudes beyond the slab contours by 20 degrees. The base of the recess is reinforced with reinforcement.

Figure 4. Cross section of the protrusion. Plate B. Parameters and shape similar to the protrusion of plate A.

Figure 5. Cross section of a recess for a protrusion. Plate A. Parameters and shape similar to the recess of plate B.

6. The scheme of the fixing device in the presence of curvature of the road in a vertical plane. The protruding parts of the recess and protrusion, fix piites when lifting the plane of the road. An increase in the deepening by an additional 10 degrees provides a power reserve for the protrusion when the roadbed is reduced in a vertical plane.

7. Cross section of the ledge and recesses of concrete slabs. The protrusion in the plate A and the recess in the plate B eliminates the displacement of the plate B vertically upwards. The force F caused by the action of the load on the plate B, directed upward, is balanced by the elastic force Fup plate A.

Fig. 8. Cross section of the ledge and recesses of concrete slabs. The recess in the plate A and the protrusion in the plate B eliminates the displacement of the plate B vertically down. The force F caused by the action of the load on the plate B, directed downward, is balanced by the elastic force Fup plate A.

Fig.9. The layout of the protrusions and recesses on the paving slab.

The protrusions and indentations alternate. The number of recesses and protrusions depends on the size of the plate, but should not be less than 3.

Figure 10. The layout of the protrusions and recesses on the road plate.

11. Ground load distribution diagram. The presence of a rigid structural connection between the plates allows you to distribute the load over a large area.

Fig. 12. Schemes of the effect of load and soil on the plate without a rigid connection with the neighboring ones, depending on its place of application. Without tight connection with neighboring plates, when a force is applied to the edge of the plate, a torque appears that can loosen the plate over time.

Fig.13. Laying scheme of paving slabs. A feature of the pavement assembly is the need for laying at an acute angle within β = 10-30 degrees. At an angle, the plate is brought to lying, until it touches the upper edges, and then, in a circular motion - is laid on the prepared soil.

Fig.14. Laying scheme of a road slab. A feature of the road assembly is the need for laying at an acute angle within β = 10-30 degrees. To do this, the near crane cables should be longer than the distant ones. At an angle, the plate is brought to the lying one, until it touches the upper edges. To align the slabs, the use of leveling hinges located at the corners of the slab is proposed. They provide a circular movement of the plate with further lowering of the plate down.

Fig.15. Arrangement of hinges on a road plate. Hinges simplify alignment on the top edge of the slab, at the time of laying the road slab.

Fig.16. Cross section of the hinge. It is made in the form of a protrusion and a recess in the form of a sector in cross section with a radius equal to 0.25 of the thickness of the plate.

Fig.17. A longitudinal section of the hinges. View from above. The hinges also simplify the alignment of the stacked plate along the axis of the road due to the manufacture of the inner end of the protrusion and the deepening of the hinge at an acute angle.

5. Implementation of a utility model

The fixing device is intended for the technical solution of ensuring a smooth surface of roads (sidewalks) and a lone gap between the plates at the joints, including sections of roads that have slopes in the vertical plane. Technically executed by supplementing the shape of concrete slabs with protrusions and recesses at the ends of a sector-shaped form with the center of a circle in the axis of the upper end of the slab. This form of execution allows the circular movement of the slab when laying, in the presence of curvature of the road in a vertical plane. The fixing device is a one-piece construction with a concrete slab and is manufactured simultaneously with the slab. The ends of the slabs, on which the protrusions and recesses are made, should not be executed vertically, but with an angle of 5 degrees, for a snug fit of the upper edges of the slabs when sloping the roadbed.

Allows you to radically increase the scope of concrete slabs in road construction.

When laying sidewalks of small tiles, the work can be done manually, and it does not require much experience for even laying. The plate is brought at an angle to the lying one, until it touches the upper edges, and then, in a circular motion, it is placed on the prepared soil (Fig. 13). The locking device provides a smooth surface of the sidewalk.

When laying roads from concrete slabs, the usual technique is used: a lorry and a crane. A feature of the masonry of the slab is that the slab should be brought at an angle β = 10-30 degrees (Fig. 14). This is due to the cylindrical shape of the working surfaces of the protrusion and recess. In this case, the stacked plate with the upper edge abuts against another, and with its further lowering - due to the circular motion, the protrusions of the plate go into the provided recesses. When using the fixing device in the road slabs, it is advisable to provide leveling hinges to simplify the laying of the slab (Fig. 15 and 16). They are located at the corners of the plate and are designed to align:

- stacked slab on the upper edge in the plane of the lying slab;

- along the axis of the road.

The stacked plate initially rests on the leveling hinges, and when the plate is further lowered, in a circular motion, it enters the protrusions into the provided recesses.

Claims (1)

Road and paving concrete slab made with a fixing device in the form of alternating protrusions and recesses on the end sides, characterized in that the protrusions and recesses have a cross-sectional shape of the sector, the radius of which is half the thickness of the slab, the angle of the sector is 50 degrees, the base of the sector is reinforced fittings.