RU2814444C1 - Retaining wall - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention can be used for reinforcement of landslide slopes during construction. Retaining wall is made of laid ribbed floor slabs oriented with the flange downwards when laid in rows with formation of cavities, wherein parallel connection of adjacent slabs is carried out using cement mortar, and series connection is carried out using embedded elements installed on edges of ribbed slabs.

EFFECT: increased manufacturability of the process of erection of retaining walls due to use of ribbed plates as a block of a retaining wall, both new factory production, and obtained during element-by-element dismantling of buildings structures, reduction of manufacturing cost, high speed of structure erection, improvement of quality of performed works, reduction of demand for materials.

1 cl, 6 dwg

Description

The invention relates to construction and can be used to strengthen landslide slopes during construction.

Known patent SU 983199 A1 “Retaining wall” Bull. No. 47, publ. 12/23/1982. This retaining wall is made of volumetric hollow U-shaped blocks, which are oriented perpendicular to the longitudinal axis of the retaining wall. The disadvantage of this design is that the given arrangement of the blocks does not protect the structure from washing out the foundation soils in places where the slabs rest on the ground through the open cavities of the retaining wall by surface water and has a high labor intensity of work.

Known patent SU 727767 A1 “Volume element of retaining walls” Bulletin. No. 14, publ. 04/15/1980. The essence of this design is that the design of retaining walls uses volumetric blocks, including front and side walls, the upper end of one block is located with the lower end of another block in the same plane, to improve the static operation of the retaining wall. The disadvantages of this design are: the difficulty of ensuring the quality of the seams between the blocks, which contributes to leakage; complexity of installation; high labor intensity and high cost of construction.

The closest in its characteristics, adopted as a prototype, is the patent RU 85502 U1 “Retaining wall”, publ. 08/10/2009. The retaining wall is made from a team of massive solid reinforced concrete blocks.

In comparison with the proposed retaining wall, the disadvantage of this design is the high consumption of materials and the high cost of construction from massive solid blocks.

The objective of the proposed invention is to increase the manufacturability of the process of constructing retaining walls by using ribbed slabs as a block of the retaining wall, both new factory-produced ones and those obtained during the element-by-element dismantling of building structures; reduction in manufacturing costs; high speed of construction; improving the quality of work performed; reducing the need for materials.

The essence of the invention is depicted in figures 1-6, where:

in fig. 1 shows a front view of a retaining wall made of ribbed slabs 2 laid on a compacted base 1 with the shelf 7 down;

in fig. 2 shows a top view of a retaining wall with the formed cavities of the ribbed slabs 2 filled with compacted clay soil 3;

in fig. Figure 3 shows a longitudinal section of a retaining wall made of ribbed slabs 2, laid on the compacted soil of the base 1 with the filling of the formed sinuses 9 between the ribbed slabs 2 with clay soil with compaction 3;

in fig. Figure 4 shows a cross-section of a retaining wall consisting of ribbed slabs 2 laid on a compacted base 1 with sinuses 9 filled with compacted clay soil 3;

in fig. 5 shows a cross-section of a retaining wall made along the transverse edge of a ribbed slab 8 with an image of the compacted soils of the base 1 on which ribbed slabs 2 are laid, and the resulting cavities 9 are filled with clayey soil with compaction 3;

in fig. Figure 6 shows the junction of ribbed slabs along the length of the retaining wall, indicating the reinforcement 5, embedded parts in the body of the slab 6 and welds.

1 - compacted base;

2 - ribbed plate;

3 - compacted clay soil;

4 - cement mortar;

5 - fittings;

6 - embedded part in the body of the slab;

7 - shelf of a ribbed plate;

8 - transverse rib of the ribbed slab;

9 - sinuses between the rows of ribbed slabs.

The retaining wall includes a compacted base 1, ribbed slabs (both new factory-made ones and those obtained during the element-by-element dismantling of building structures) 2, compacted clay soil 3, cement mortar 4, reinforcement 5, an embedded part in the body of the slab 6.

A retaining wall made of ribbed floor slabs (covering) is carried out in the following sequence: the organic or alluvial layer of soil, which may be located under the base of the retaining wall, is removed, the soils of base 1 are compacted, and, if necessary, the weak foundation is replaced with reliable clay soils with layer-by-layer compaction. Then an examination is carried out and the strength characteristics of the ribbed slabs 2 are determined and they are installed in the design position with the flange 7 down, the formed sinuses 9 are filled with clay soil 3 with its compaction, which eliminates possible water leaks through the retaining wall; if necessary, the clay soil is strengthened with cement or lime , adjacent structures are installed along the entire length of the retaining wall, cement mortar 4 is laid, and a subsequent row of ribbed slabs 2 is laid (Fig. 1, 2, 3, 4, 5). Laying the slabs in this way is carried out up to the required design height of the retaining wall. The adjacent row of ribbed slabs 2 along the length of the retaining wall is connected to the previous one using embedded parts in the body of the slab 6 and reinforcement 5 by welding (Fig. 1, 6).

An example of the method.

In the process of building a house on a landslide slope, which is in motion, at the address Voronezh st. Massalitinova embankment, house 44, to eliminate the possibility of a landslide, a retaining wall made of ribbed slabs formed as a result of the demolition of an industrial building was proposed, which was implemented in the following sequence: the organic layer of soil was removed, replaced with reliable clay soil and layer-by-layer compaction, an inspection was carried out and determination of the strength characteristics of ribbed slabs, the slab was installed in the design position with the flange down, the resulting cavities were filled with clay soil and subsequent compaction, adjacent ribbed slabs were installed along the entire length of the retaining wall, the slabs were connected to each other along the length of the retaining wall using embedded parts, reinforcement and welding, laying cement mortar, installing the next row of slabs repeating the same technology.

Such a retaining wall made of ribbed floor slabs used as blocks will make it possible to carry out work during active landslide processes and eliminate the possibility of soil sliding on a landslide slope.

The use of such a technical solution provides the following opportunities:

- reduce the time required to construct retaining walls without loss of structural reliability;

- reduce the cost of retaining wall construction and construction work;

- reuse ribbed slabs obtained by element-by-element dismantling of building structures;

- reduce the weight of the mounted structure;

- waterproofness of the retaining wall, thanks to the filling of the sinuses with clay soil with compaction;

- the ability to carry out work on a landslide slope with active landslide processes, while ensuring the safety of work due to the high speed of installation of the structure and the ability to use local clay soils;

- take a step towards solving environmental problems associated with the disposal of reinforced concrete ribbed slabs formed during demolition of buildings.

Claims (2)

1. A retaining wall, characterized in that it is made of laid ribbed floor slabs, oriented with the flange down when they are laid in rows to form sinuses, and the parallel connection of adjacent slabs is made using cement mortar, and the serial connection is made using mortgages installed at the edges ribbed slabs. 2. Retaining wall according to claim 1, characterized in that the gaps formed between the ribbed slabs are filled with compacted soil.

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