RU151365U1 - DESIGN OF WATERPROOFING STRUCTURE WITH APPLICATION OF POLYMERIC BINDERS - Google Patents

Abstract

A coastal protection structure consisting of reinforced concrete frames forming a grid, the cells of which are filled with mineral filler, impregnated with a polymer binder.

Description

The utility model relates to hydraulic structures, namely to shore protection structures designed to protect the coastline from the effects of wave processes and erosion by the current. The design is a reinforced concrete frame with various mesh sizes and heights, filled with a mineral filler impregnated with a polymer binder.

From the prior art, the following structures are known.

The source “Russian State Concern“ ROSAVTODOR ”, Central Bureau of Scientific and Technical Information Roads, Protection of road slopes from erosion, Moscow 1992” provides several options for strengthening the slopes presented below.

Strengthening the slope with stone in wattle cages. The cells are square in size 1 × 1 m from wattle fence with a height of 20-30 cm and are installed above the surface of the slope. The bottom of the cells is lined with dry grass or straw, then poured or covered with rubble stone or halves of bricks. In two intersecting directions, the cells are strengthened by wooden stakes arranged in oblique rows. This design is not effective in strengthening the floodplain embankment.

Strengthening the slope of a low-key stone is used at high slopes to protect them from erosion by various surface waters and wave action. When creeping down the slope, it is strengthened with stones of different sizes with the laying of large stones from the outside. With all the positive qualities of this design, such as low cost and laboriousness, simple repair and restoration also has drawbacks, the main of which is the limitation of the use of this design with significant effects of the wave and current.

Strengthening the slope with a stone outline in reinforced concrete boxes. Reinforced concrete boxes are made square without a bottom with a side size of 1.2-1.5 m and a height of 0.4-0.5 m. After laying, they will be filled with small stones.

In the sources RU 2032022, SU 1821512, RU 2212495 describes the strengthening of slopes with a reinforced concrete frame (lattice structures), the protective coating of road slopes from box reinforced concrete slabs. The structure is fastened with metal anchors, hammered into the joints of the joints, the structure is attached to the surface of the slope, while ensuring its rigidity and stability. Cells of this design can be filled with plant soil with grass sowing, soil treated with cementitious or monolithic concrete, etc. This makes it possible to use a variety of local materials to fill the cells with a minimum consumption of materials for the manufacture of the elements themselves (compared to prefabricated plates).

Lattice fortifications consist of prefabricated reinforced concrete or reinforced elements, which, after combining at the joints, form a lattice with cells of a given size on the slope surface. The design is attached to the surface layers of the slope soil with metal pins or reinforced concrete piles, clogged at the joints. Prefabricated elements may have a diagonal or rectangular arrangement in the structure of the reinforcement. In the lower part, near the sole of the subgrade, there is a stop, which receives shear from the own mass of the lattice structure.

Framed and lattice structures filled with stone are more effective than filling with stone in a free state, however, at significant speeds of the flow of water, the stone of their cells is also washed out.

As a prototype, patent RU 2032022 for a device for strengthening a subgrade or slopes is considered.

A device for reinforcing the subgrade or slopes includes a lattice structure made of separate square-joined, filled with filler materials for laying on the slope of the subgrade and anchors for embedding the slope into the soil, rigidly connected to the frames in the places of their interfacing with each other. The lattice frames are made with rectangular wedge-shaped end faces in the places of their interfacing with each other, connected by cross-arms, or are composed of square railway sleepers, the anchors are made in the form of triangular or trapezoidal frames connected to the elements of the square lattice frames by one face of a triangular frame or a large base of the trapezoidal frame, while the anchor frames are oriented in the plane of the cross section of the slope and placed at intervals from each other uga, the elements latticework frames and anchor frames are made of wood middle portion in the exhaust path railway sleepers.

The disadvantage of this design is the fact that the aggregate can be washed out of the cells of the structure, thereby shortening the life of the structure.

The purpose of the invention is to increase reliability, expand functionality and extend the life of the structure.

The goal is achieved by the fact that the aggregate laid in the cells of the concrete structure is additionally bonded with polyurethane adhesives.

A feature of the proposed utility model is:

- reduction of construction costs through the use of aggregate having a larger range of fractions (from small to large, depending on which is located in nearby quarries);

- increased resistance to influences from the flow and waves, due to the connection between the aggregate stones;

- the use of porous structures can reduce the speed of the river near the coatings by 2-3 times compared with the slab coating;

- the possibility of integration with other protective structures;

- structures of frames and associated aggregate are easily straightened and restored after damage to individual sections;

- a protective coating such as an element of landscape design can have different color shades due to the color of the filler and the addition of pigments to the binder composition.

The technology provides two options for filling cells. The first option involves filling the cells with a pre-prepared mixture of mineral filler in the form of gravel of various fractions, pebble materials or sandy soils and a polymer binder consisting of one or two component polyurethane adhesives. The second option is to fill the cells in stages, at the first stage the cells are filled with mineral filler, at the second stage the polymer binder is impregnated. In the second method, the requirement for the quality of the mineral filler is lower and allows you to fill the cells with any, even very clogged mixtures, which after natural washing with atmospheric precipitation is impregnated with a binder composition.

The results of mathematical modeling allow us to conclude that the use of porous structures can reduce the flow velocity of the river near the coatings by 2–3 times in comparison with the slab coating, which will reduce the degree of washing out of embankments, and can also avoid the emergence of shore-protecting porous plates.

In FIG. 1 shows the design of sloping clothes made of reinforced concrete frames forming a grid with cells 1.0 × 1.0 m and a height of 0.3 meters filled with a polymer binder with a mineral filler.

Claims (1)

A coastal protection structure consisting of reinforced concrete frames forming a grid, the cells of which are filled with mineral filler, impregnated with a polymer binder.

Images