RU197543U1 - Temporary rectangular precast culvert with gabions - Google Patents

Abstract

The utility model relates to the field of small culverts. In particular, it can be used in the construction of temporary highways and bypasses, for example, in the construction of new and reconstruction (or restoration) of permanent road bridges. The technical task of the utility model is to develop the design of a temporary rectangular prefabricated culvert with higher characteristics of stability, strength, reliability and water permeability compared with the prototype. The specified technical problem is solved due to the fact that the temporary rectangular prefabricated culvert with the use of gabions consists of walls, ceilings and elements for strengthening the channel of the watercourse, pipe ends and slopes of the embankment at the ends, characterized in that the pipe walls made up of box-shaped gabions, and the base of the walls, the channel of the watercourse, the reinforcement of the pipe ends and the slopes of the embankment at the ends are made of mattress gabions laid on the vegetative cover of the soil; the pipe overlap is made of wooden block blocks, based on the gabions of the upper rows of walls; All gabions are made of mesh netting.

Description

The utility model (hereinafter-PM) refers to the field of small culverts. In particular, it can be used in the construction of temporary highways and detours, for example, in the construction of new, reconstruction (or restoration) of permanent road bridges.

It is known that during the construction of temporary, incl. of military highways (VAD) from small culverts on them, the most widely used wooden rectangular and triangular pipes (Manual "Restoration (construction) of the VAD" MO Military Publishing House. M .: 1991) [1]

The rectangular pipe from the wooden boards, shown in Fig. 40, a [1] is adopted as a prototype PM.

The main disadvantages of the prototype is:

1. The need for harvesting roundwood and manufacturing from it pipe elements;

2. The rigidity of the pipe body structure, the violation of which can lead to the appearance of dangerous deformations;

3. The possibility of accumulation of water behind the walls of the pipe, during freezing of which a pipe breakdown can occur, as well as the appearance of ice;

4. The need for soil cutting to arrange the foundation of the pipe, for example, a lay foundation.

Known gabion structures of factory production in the form of a parallelepiped made of steel mesh of double torsion (Gabion mesh products of GK "Gabion" M .: 2013) [2]

In transport construction, box and mattress gabions are increasingly used due to qualities such as strength, flexibility, reliability, stability, durability and water permeability. The main area of application of gabions is the construction of water permeability. The main area of application of gabions is the construction of retaining gravity walls to protect against washing out of bridge cones, strengthening river banks, regulatory dams, along coastal structures for protection, for example, roads laid near water edges (Guidelines for the use of gabion structures in road and bridge construction. FSUE Soyuzdorproekt M .: 2001) [3]

Retaining walls of box-shaped gabions depicted on page 24 [2] adopted as a prototype of retaining walls PM.

The authors of PM are not aware of the construction of temporary rectangular precast culverts with gabion walls.

The technical task of the PM is to develop the design of a temporary rectangular prefabricated culvert with higher characteristics of stability, strength, reliability and permeability compared to the prototype.

The specified technical problem is solved due to the fact that the temporary rectangular prefabricated culvert with the use of gabions consists of walls, ceilings and elements for strengthening the channel of the watercourse, pipe ends and slopes of the embankment at the ends, characterized in that the pipe walls are made of box-shaped gabions and the base of the walls , the channel of the watercourse, the reinforcement of the ends of the pipes and slopes of the embankment at the ends are made of mattress gabions laid on the vegetation cover of the soil; the pipe overlap is made of wooden block blocks, based on the gabions of the upper rows of walls; All gabions are made of mesh netting.

The design of the PM is shown in the figure, where it is indicated:

FIG. 1 - view of the pipe on the facade of the embankment; FIG. 2.a - cross section of the embankment; FIG. 2, b - the cross section of the pipe along the longitudinal axis; FIG. 3 is a top view of a pipe overlap block; FIG. 4 is a bottom view of the block overlap; FIG. 5 - design position of the block of overlap on the walls of the pipe; FIG. 6 is a view of an end face of a floor block on a wall gabion; pos. 1 - carriageway; pos. 2 - block block pipe; pos. 3 - walls of box-shaped gabions; pos. 4 - mattress gabions; pos. 5 - embankment; pos. 6 - block block; pos. 7 - spacer bars; pos. 8 - persistent transverse bars; pos. 9 - geotextile panels.

The implementation of the PM is carried out in the following sequence.

At stage 1, the alignment work is performed. At the same time, folded boxes of box-shaped 3 and mattress 4 gabions and shields of pipe overlap 6 are brought up.

At stage 2, sweeps of mattress gabions 4 are laid on the vegetation cover and empty boxes are formed from them, connecting the elements with wire. After that, stones or other material filling boxes is brought up. Filling of boxes 4 is carried out manually or using equipment, for example, a truck crane with a double jaw grab with a capacity of 0.35-0.5 m ³ . Boxes 4 filled with stone are closed with lids, tying them with a knitting wire to the walls and diaphragms of gabions.

At the 3rd stage, assembled empty boxes of box-shaped gabions 3 are installed on mattress gabions 4, the assembly of which from sweeps is carried out on an embankment near the location of the pipe walls.

Stones are placed in the gabion boxes 3 installed and wired together. The filled boxes 3 are covered.

After completion of operations to fill one wall with gabion stone (Fig. 1,2), a second wall is made of gabion 3 using the described technology.

At the 4th stage, a pipe overlapping device is made from finished wooden block blocks 6, which are based on gabions 3 of both pipe walls. The last operation on the device of the pipe - laying the panels of geotextiles 9 on top of the ceiling 6 (Fig. 5 and 6)

After that, the pipe is filled with soil of embankment 5 (Fig. 2). Then gabions 4 (Fig. 1 and 2) cover the slopes of the embankment close to gabions 3 mattress gabions 4 (Figs. 1 and 2).

Thus, the proposed utility model allows you to build a temporary rectangular prefabricated culvert using box and mattress gabions, as well as local materials - stone and wood.

Moreover, the utility model, having greater flexibility and water permeability, provides greater stability, reliability and durability of the pipe compared to the prototype.

In addition, a utility model can be arranged in a railway embankment.

Used sources

1. Manual Restoration (construction) of military highways. M, V.I. 1991.

2. Gabion mesh products GK "Gabion" M .: 2013.

3. Guidelines for the use of gabion structures in road and bridge construction. FSUE Soyuzdorproekt M.: 2001.

Claims (1)

Temporary rectangular prefabricated culvert with gabions, consisting of walls, floors and elements for strengthening the channel of the watercourse, pipe ends and slopes of the embankment at the heads, characterized in that the walls of the pipe are made of box-shaped gabions, and the base of the walls, the channel of the watercourse, reinforcing the ends of the pipe and The slopes of the embankment at the headings are made of mattress gabions laid on the vegetative cover of the soil; the pipe overlap is made of wooden block blocks, based on the gabions of the upper rows of walls; All gabions are made of mesh netting.

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