RU2000377C1 - Pavement slab - Google Patents

Abstract

Field of use: road construction. SUMMARY OF THE INVENTION: a plate is made with a solid corrugated supporting surface and is located on a loose underlying table, the supporting surface having a sawtooth profile in the direction of the road. 1 silt

Description

The invention relates to the construction of roads with hard concrete and asphalt concrete pavement, and more particularly, to a pavement consisting of reinforced concrete slabs and an asphalt concrete layer, to a technology for their manufacture and laying on the ground.

To navigate a paved road, first grade the track, fill the soil with the desired height and layout, then sand, gravel, crushed stone, etc. are poured onto the natural soil to increase the underlying layer. Then concrete slabs or asphalt concrete pavements are laid on the underlying layer.

Slabs and asphalt concrete, laid flat on the underlying soil layer, squeeze out soil that is not limited to the edges of the hard surface over time, the underlying layer creeps along the sides; the hard coating is warped, the uniformity of the load on the road is violated, dynamic overloads are created in some places of the road. This especially affects sandy soils and other weak and loose, as well as very wet.

The purpose of the invention is to facilitate the construction of paved roads by reducing bulk soil, its reliability and durability, reducing the subsidence of asphalt or concrete slabs from the intensity of the load.

The goal is achieved in that reinforced concrete slabs, asphalt concrete and all other hard road surfaces will have a supporting plane on the underlying soil layer, not plane-parallel, but sawtooth.

The sawtooth shape of the surface will look like that in the cross-sectional diagram of the road. Over the course of its coating, it will consist of an endless series of wedge-shaped protrusions, alternating with a wedge-shaped void, which will be filled with underlying soil, sand, gravel, etc.

The sawtooth shape of the coating eliminates the extrusion and creep of the underlying soil within the width of the road.

The underlying soil layer enclosed by protrusions-corners of a sawtooth shape

WITH

WITH

CA

V

G

we will be limited tightly on the sides of the cover.

The soil enclosed in the empty space of the corner will be compressed 5-10 times, which means its density and strength will be increased.

For such a plane shape, it is not necessary to increase the coating material, it is only necessary to change the plane shape: from the flat area of the support, make a sawtooth in the cross section of the road. To do this, it is necessary to cast reinforced concrete slabs from the bottom into a sawtooth shape, and lay asphalt concrete on the prepared sawtooth surface, which can be easily obtained by welding protrusions onto the road roller.

The sawtooth shape of the sole of the coating will double the reference surface area of the hard coating, since in an equilateral triangle the sum of the sides is twice as long as the base. According to the calculations of practical necessity, sawtooth shapes of various types will be made: with an increased height of the triangle, then the width of the area of the supporting surface will not be two, but three or more times larger than the flat width.

0

5

0

5

The specific load will accordingly decrease with the constant dimensions of the road and its width.

The drawing shows a hard road surface with the proposed form of the supporting surface, where 1 is bulk soil, the base of the soil under the sole, litter; 2 - asphalt concrete, reinforced concrete slabs of hard surface: 3 - sawtooth shape of the hard surface of the road; 4 - hollow angle, compressing and compacting the bedding soil repeatedly.

We give an approximate calculation: with a flat coating ABxBC 5x5 25 / m2, where AB is the width of the road; BC - the length of the road section.

With a sawtooth coating, HELL + DE + EF + FK + ... ABx2 10 m, where HELL. DE, EF, FK ... are respectively the sides of the hollow corners and protrusions of the hard surface. We get: 10x5 50 m2. The area of the supporting surface of the hard coating is doubled.

Claims (1)

The claims A pavement slab made with a solid corrugated abutment surface for positioning on a loose underlying layer, characterized in that the abutment surface has a sawtooth profile in the direction of the road. S SS777 G: W  -T- v Ј