CN105544598B - Assembly concrete tubulose building block ecology retaining wall - Google Patents

Abstract

The invention relates to a prefabricated concrete tubular block ecological retaining wall, which is characterized in that it includes a bottom plate (5), and the bottom plate (5) is provided with a multi-layer concrete tubular block layer from bottom to top, and the multi-layer concrete tubular block layer The outer edge surface of the block layer is indented to the rear layer by layer. The concrete tubular block layer includes a row of first tubular block rows in the front row and at least one second row of tubular block rows in the rear row. Each layer of concrete Inside the first tubular block body (1.1) of the first tubular block (1) of the tubular block layer, within the second tubular block body (2.1) of the second tubular block (2) and adjacent tubular blocks The gaps formed by the block rows are all filled with planting soil. The prefabricated concrete tubular block ecological retaining wall of the present invention has the advantages of good ecological benefit, simple construction, reliable quality and controllable cost, and is a high-quality novel ecological retaining wall.

Description

Prefabricated concrete tubular block ecological retaining wall

technical field

The invention relates to an ecological retaining wall of assembled concrete tubular blocks.

Background technique

Retaining walls are built on slopes to reinforce soil slopes or stone slopes. They are the most common buildings in water conservancy, transportation, and municipal engineering.

The traditional hard retaining wall is usually made of stone or reinforced concrete, with reliable quality and mature technology, and is widely used in engineering. However, this kind of retaining wall has a great impact on the ecological environment because it separates the soil, especially the retaining wall along the river. For the river channel, the water body is in front of the wall, and the soil body is behind the wall. The two are organically blended in a natural state, and various animals and plants can interact freely to form a complete ecosystem. However, due to the rigidity of traditional retaining walls, The water and soil are forcibly separated, and the two lose communication channels, causing great damage to the local environment.

With the development of social economy, more and more attention has been paid to the protection of the ecological environment. In order to solve this problem, a variety of ecological retaining walls have appeared on the market in recent years. All kinds of questions. The main issues focus on:

1. In order to soften the revetment and form a transparent structure on both sides, the design of the retaining wall is often more complicated, which is not suitable for large-scale construction on the site;

2. The new structure analysis theory is not yet mature, and the quality of the retaining wall largely depends on the quality of the construction unit itself;

3. The cost of new structures and materials remains high.

Therefore, it is particularly important to seek an ecological retaining wall with good ecological benefits, simple construction, reliable quality and controllable cost.

Contents of the invention

The purpose of the present invention is to overcome the above disadvantages and provide an ecological retaining wall of assembled concrete tubular blocks with good ecological benefits, simple construction, reliable quality and controllable cost.

The purpose of the present invention is achieved like this:

A prefabricated concrete tubular block ecological retaining wall, which includes a base plate, on which a multi-layer concrete tubular block layer is arranged from bottom to top, and the outer edge surface of the multi-layer concrete tubular block layer shrinks backward layer by layer Further, the concrete tubular block layer includes a row of first tubular block rows in the front row and at least one second row of tubular block rows in the rear row, and the first tubular block row includes a plurality of first tubular blocks, the second tubular block row includes a plurality of second tubular blocks along the length of the retaining wall, the first tubular blocks include a first tubular block body, the The middle part of the first tubular block body is provided with first through holes, the second tubular block body includes a second tubular block body, and the middle part of the second tubular block body is provided with second through holes , when the concrete tubular block layer is formed, the first through holes corresponding to two adjacent first tubular blocks are connected, the second through holes corresponding to two adjacent second tubular blocks are connected, and the adjacent second tubular blocks are connected. The first through hole at the corresponding position of the first tubular block and the second tubular block communicates with the second through hole, and the first tubular blocks of the adjacent two layers of concrete tubular block layers are arranged in dislocation, and each layer of concrete tubular block Planting soil is filled in the first tubular block body of the first tubular block of the block layer, the second tubular block body of the second tubular block and the gaps formed by adjacent tubular block rows.

A geogrid is arranged between two adjacent layers of concrete tubular block layers.

A vertically arranged non-woven fabric is arranged behind the last row of the second tubular block row of each layer.

The top front section of the first tubular block body is provided with a block flange, and the bottom front side wall of the first tubular block of the first tubular block row on the upper layer is against the first tubular block of the first tubular block row on the lower layer. The block flange rear sidewall of the block.

Compared with prior art, the beneficial effect of the present invention is:

1. There are a large number of through holes between the tubular blocks, and the front and rear are transparent, which is conducive to the biological exchange of water and shore. At the same time, the planting hole formed by the tubular block body can be planted with aquatic plants such as reeds, absorbing nitrogen, phosphorus and potassium in the water, and purifying the water quality. ecological benefits.

2. Tubular blocks can be prefabricated in batches, and only need simple assembly and splicing on site, which is much faster than on-site pouring, so the construction speed is fast.

3. Since the tubular blocks are all prefabricated by the manufacturer, the quality is controllable, and the actual construction quality is better than that of on-site pouring.

4. Reduce the cost. Since the application of geogrid reduces the earth pressure behind the wall, the conditions for the implementation of the prefabricated concrete tubular block ecological retaining wall can be met, which greatly reduces the amount of concrete and steel.

To sum up: Because the prefabricated concrete tubular block ecological retaining wall is transparent in front and back, it meets the conditions for water-shore exchange, and can plant reeds and other aquatic plants in the planting holes of the tubular blocks on the water-facing surface. At the same time, the optimized tubular blocks through theoretical calculations can be prefabricated in the prefabrication yard, and then assembled on site, which improves the production speed to the greatest extent and ensures the construction quality. Therefore, the prefabricated concrete tubular block ecological retaining wall of the present invention has the advantages of good ecological benefits, simple construction, reliable quality, and controllable cost, and is a high-quality novel ecological retaining wall.

Description of drawings

Fig. 1 is the structural schematic diagram of the prefabricated concrete tubular block ecological retaining wall of the present invention.

Fig. 2 is a schematic structural view of the first tubular block.

Fig. 3 is a schematic structural view of the second tubular block.

in:

First tubular block 1, first tubular block body 1.1, first through hole 1.2, block flange 1.3

The second tubular block 2, the second tubular block body 2.1, the second through hole 2.2

Geogrid 3

Non-woven fabric 4

Bottom plate 5, bottom plate flange 5.1.

detailed description

Referring to Fig. 1 ~ Fig. 3, a kind of prefabricated concrete tubular block ecological retaining wall that the present invention relates to, it comprises base plate 5, and described base plate 5 is provided with multi-layer concrete tubular block layer from bottom to top, multi-layer concrete The outer edge surface of the tubular block layer is indented to the rear layer by layer. The concrete tubular block layer includes a row of first tubular block rows in the front row and at least one second row of tubular block rows in the rear row. The first tubular block row includes a plurality of first tubular blocks 1 along the length direction of the retaining wall, and the second tubular block row includes a plurality of second tubular blocks 2 along the length direction of the retaining wall. The first tubular block 1 includes a first tubular block body 1.1, the first through hole 1.2 is provided in the front, rear, left, and right of the middle part of the first tubular block body 1.1, and the top front section of the first tubular block body 1.1 is provided with Block flange 1.3, the second tubular block 2 includes a second tubular block body 2.1, the middle of the second tubular block body 2.1 is provided with second through holes 2.2 in front, rear, left, and right, wherein the first tubular block The body 1.1 has the same size as the second tubular block body 2.1, and the first through hole 1.2 has the same size as the second through hole 2.2. When forming a concrete tubular block layer, the first through holes 1.2 corresponding to the adjacent two first tubular blocks 1 are connected, and the second through holes 2.2 corresponding to the adjacent two second tubular blocks 2 are connected. The first through hole 1.2 adjacent to the corresponding position of the first tubular block 1 and the second tubular block 2 communicates with the second through hole 2.2. A geogrid 3 is arranged between two adjacent concrete tubular block layers, and a vertically arranged non-woven fabric 4 is arranged behind the last row of the second tubular block row of each layer, and the geogrid 3 is connected with the non-woven fabric The overlapping length of the woven fabric 4 is at least 1 m. The first tubular block row of the concrete tubular block layer of two adjacent layers is misplaced, and the bottom front side wall of the first tubular block 1 of the first tubular block row of the upper layer is against the first tubular block row of the lower layer. Block flange 1.3 rear side wall of a tubular block 1. The first tubular block body 1.1 of the first tubular block 1 of each concrete tubular block layer, the second tubular block body 2.1 of the second tubular block 2 and the gap formed by adjacent tubular block rows Both are filled with planting soil.

The construction method of a prefabricated concrete tubular block ecological retaining wall is as follows:

Before construction, according to the theoretical force analysis of the retaining wall in this section, the friction force between the geogrid and the soil is calculated layer by layer, and the friction force of the geogrid is calculated to offset the force of the backfill on the retaining wall, so that the retaining wall The force is minimized to determine the length and number of layers of the geogrid.

According to the condition of the minimum force on the retaining wall, the force calculation and check calculation are carried out to determine the initial section of the proposed prefabricated concrete tubular block ecological retaining wall.

According to the initial section of the prefabricated concrete tubular block ecological retaining wall, first determine the size of the concrete tubular block in the wall, and then start construction:

Step 1. Earthwork Excavation

Carry out line setting out and earthwork excavation according to the design plan.

Step 2. Bottom pouring

Carry out the pouring of base plate 5 by the method for conventional concrete base plate pouring.

Step 3. The first layer of concrete tubular block layer is laid

Set the bottom plate flange 5.1 on the outer edge of the top surface of the bottom plate, lay a 3~5cm thick adhesive layer (choose M15 cement mortar) on the bottom plate behind the bottom plate flange 5.1, and place the bottom plate 5 behind the bottom plate flange 5.1 in the direction of the design axis (that is, along the length direction of the retaining wall) place the first tubular block row of the first layer of concrete tubular block layer, and place two rows of second tubular block rows behind the first tubular block row to ensure that the The through-holes of the adjacent tubular blocks are connected. In order to prevent seepage, a non-woven fabric 4 (with a specification above 150g/m2) is vertically arranged behind the second tubular block row at the rear so that the second tubular block row is separated from the backfill soil. open. The first tubular block 1 and the second tubular block 2 are hoisted by a small crane. As a preference, a geogrid 3 may also be arranged in the cement mortar on the bottom plate.

Step 4. Backfill the first layer of backfill soil

Backfill the first layer of backfilling soil behind the first layer of concrete tubular block layer, and the top surface elevation of the first layer of backfill soil after tamping is 3 times higher than that of the second tubular block 2 of the first layer of concrete tubular block layer. ~5cm, in order to facilitate the paving of the adhesive layer (cement mortar or fine stone concrete) on the first layer of concrete tubular block layer, and the compaction degree of the first layer of backfill soil is 0.9.

Step 5. Fill the first layer of planting soil

In the first tubular block body 1.1 of the first tubular block 1 of the first concrete tubular block layer, in the second tubular block body 2.1 of the second tubular block 2 and adjacent tubular block rows form The first layer of planting soil is filled in the gaps of the first layer of planting soil, and the filling high-rise of the first layer of planting soil is 3-5cm lower than the top high-rise of the second tubular block 2 of the first layer of concrete tubular block layer, so as to facilitate the first layer of concrete For the embedding of the bonding layer (cement mortar or fine stone concrete) paved on the tubular block layer, the compaction degree of the first layer of planting soil is 0.85.

Step 6. Laying of the first layer of geogrid and paving of cement mortar

Carry out the first paving (M15 cement mortar or fine stone concrete) on the first layer of concrete tubular block layer to form the first paving layer, the thickness of the first paving layer is 3cm, and then the first paving layer Lay geogrid 3 on the layer and along the axial direction perpendicular to the retaining wall (to the rear of the retaining wall) according to the designed length, and pave the second time on the geogrid 3 (M15 cement mortar or fine stone Concrete) to form the second paving layer, the thickness of the second paving layer is 2cm and compacted, and the geogrid 3 is sandwiched between the first paving layer and the second paving layer. The time interval between two pavings should be less than the initial setting time of the bonding layer (M15 cement mortar or fine stone concrete). The overlapping length of the geogrid 3 and the non-woven fabric 4 of this layer is at least 1m.

In the same way, repeat the above-mentioned cycle from step 3 to step 6, and lay the last layer of concrete tubular block layer on the next layer of concrete tubular block layer until the design elevation is reached.

Claims (2)

1. A prefabricated concrete tubular block ecological retaining wall is characterized in that it includes a base plate (5), and the base plate (5) is provided with a multi-layer concrete tubular block layer from bottom to top, and the multi-layer concrete tubular block layer The outer edge surface of the block layer is indented to the rear layer by layer. The concrete tubular block layer includes a row of first tubular block rows in the front row and at least one second row of tubular block rows in the rear row. The first The row of tubular blocks includes a plurality of first tubular blocks (1) along the length of the retaining wall, the second row of tubular blocks includes a plurality of second tubular blocks (2) along the length of the retaining wall, The first tubular block (1) includes a first tubular block body (1.1), first through holes (1.2) are provided at the front, rear, left, and right sides of the middle of the first tubular block body (1.1), and the second The tubular block (2) includes a second tubular block body (2.1), and second through holes (2.2) are provided at the front, rear, left, and right sides of the middle part of the second tubular block body (2.1). When forming a concrete tubular block layer, The first through holes (1.2) corresponding to two adjacent first tubular blocks (1) are connected, and the second through holes (2.2) corresponding to two adjacent second tubular blocks (2) are connected, The first through hole (1.2) at the corresponding position of the adjacent first tubular block (1) and the second tubular block (2) is connected with the second through hole (2.2), and the adjacent two layers of concrete tubular block layers The first tubular block of each layer of concrete tubular block (1) in the first tubular block body (1.1), the second tubular block (2) of each layer of concrete tubular block Planting soil is filled in the block body (2.1) and the gap formed by adjacent tubular block rows; The top front section of the first tubular block body (1.1) is provided with a block flange (1.3), and the bottom front side wall of the first tubular block (1) of the first tubular block row in the upper layer is against the first tubular block in the lower layer. the rear side wall of the block flange (1.3) of the first tubular block (1) of the row of tubular blocks; A geogrid (3) is arranged between two adjacent layers of concrete tubular block layers. 2. A prefabricated concrete tubular block ecological retaining wall according to claim 1, characterized in that a vertically arranged non-woven fabric (4) is arranged behind the last row of the second tubular block row of each layer .