Reinforced earth retaining wall structure

Abstract

The utility model relates to the technical field of soil retaining walls, and discloses a reinforced soil retaining wall structure which solves the problems that an existing reinforced soil retaining wall is poor in overall stability and drainage performance and comprises backfill soil layers and a plurality of fine gravel layers which are alternately laid from bottom to top to form a stacked structure. A first hot-dip galvanizing fine steel bar grating is laid in the backfill soil layer, a hot-dip galvanizing thick steel bar grating is laid between the backfill soil layer and the fine gravel layer, hot-dip galvanizing inclined steel bar gratings are arranged at the positions, close to the slope, of the first hot-dip galvanizing fine steel bar grating and the hot-dip galvanizing thick steel bar grating, and an inverted filter geotechnical cloth layer is laid at the top end of the topmost backfill soil layer. A first gravel water guide layer is laid at the top end of the inverted filter geotechnical cloth layer, a soil covering layer is laid at the top end of the first gravel water guide layer, a second hot galvanizing fine steel bar grating is laid in the soil covering layer, and one side of the backfill soil layer and one side of the fine gravel layer are filled with a second stepped gravel water guide layer. Through the soil retaining wall, the strength, the stability and the drainage performance can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of soil retaining wall technology, specifically a reinforced soil retaining wall structure. Background Technology

[0002] Earth retaining walls are a common type of retaining structure in various engineering constructions, applicable to dams, ports, mountains, and soil and water conservation. Reinforced earth retaining walls are a combination of backfill, reinforcing bars, and a panel. Through the friction between the reinforcing bars and the soil, and the constraint of the panel on the backfill, the reinforcing bars and backfill are integrated into a flexible structure capable of withstanding significant deformation and suitable for soft foundations. However, the internal reinforcing bar configurations in existing reinforced earth retaining walls are relatively simple, and their constraint function needs further improvement. Furthermore, existing reinforced earth retaining walls have poor overall drainage performance; severe seepage can lead to backfill loss, affecting overall safety and service life. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a reinforced soil retaining wall structure, which effectively solves the problems of poor overall stability and poor drainage performance of existing reinforced soil retaining walls.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a reinforced soil retaining wall structure, comprising several backfill soil layers and several fine sand and gravel layers, wherein the backfill soil layers and fine sand and gravel layers are laid alternately from bottom to top to form a layered structure, a hot-dip galvanized fine steel bar grid is laid inside the backfill soil layer, and a hot-dip galvanized coarse steel bar grid connected to the hot-dip galvanized fine steel bar grid is laid between the backfill soil layer and the fine sand and gravel layer, and hot-dip galvanized inclined steel bar grids are provided near the slope position of the hot-dip galvanized fine steel bar grid and the hot-dip galvanized coarse steel bar grid. The top layer of the fence consists of a backfill layer topped with a geotextile layer, a gravel drainage layer, a soil cover layer, and several hot-dip galvanized fine steel bar grids. The backfill layer and the gravel layer away from the slope are filled with a stepped gravel drainage layer. The backfill layer and the gravel layer are located on the side of the slope closest to the slope, and a cast-in-place concrete slope is provided. Several cast-in-place concrete ecological trenches are provided on the side of the cast-in-place concrete slope.

[0005] Preferably, a buffer water receiving trough is provided at the middle position of the cast-in-place concrete slope.

[0006] Preferably, the cast-in-place concrete slope has several strip channels communicating with the cast-in-place concrete ecological trough. The interior of both the cast-in-place concrete ecological trough and the strip channels is filled with planting soil, and a drainage outlet is provided at the bottom of one side of the cast-in-place concrete ecological trough.

[0007] Preferably, a pre-embedded pile is provided on the side of the hot-dip galvanized coarse steel bar grid away from the hot-dip galvanized fine steel bar grid, and the pre-embedded pile has an inclined structure.

[0008] Preferably, the hot-dip galvanized coarse steel bar grid is composed of several coarse threaded steel bars, several transverse bars and several longitudinal bars. The transverse bars are wound around the coarse threaded steel bars and welded to them. The longitudinal bars are welded to the transverse bars. At the bottom end of one of the coarse threaded steel bars, several limiting steel bar columns that match the hot-dip galvanized fine steel bar grid are welded.

[0009] Preferably, the hot-dip galvanized fine steel bar grid one, the hot-dip galvanized inclined steel bar grid and the hot-dip galvanized fine steel bar grid two are all welded together from fine steel wire one and fine steel wire two. The hot-dip galvanized inclined steel bar grid is welded to the hot-dip galvanized coarse steel bar grid, the hot-dip galvanized fine steel bar grid one and the hot-dip galvanized fine steel bar grid two. Several inclined tie bars are welded to the top of the hot-dip galvanized fine steel bar grid one, and the top of the inclined tie bars is welded to the coarse threaded steel bar.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) In operation, by setting up a crushed stone water-conducting layer, rainwater inside the soil cover layer can be guided and drained. By setting up a reverse filter geotextile layer, it can have water permeability and at the same time avoid a large amount of rainwater infiltration. Its resistance is greater than that of the first crushed stone water-conducting layer, so that a large amount of rainwater can be discharged through the first crushed stone water-conducting layer, and a large amount of rainwater can be prevented from seeping into the backfill soil layer and the fine gravel layer. By setting up a stepped crushed stone water-conducting layer, the water inside the slope can be guided, and a large amount of water can be prevented from entering the backfill soil layer and the fine gravel layer. By setting up the backfill soil layer and the fine gravel layer to be laid alternately from bottom to top to form a layered structure, the density at the connection with the hot-dip galvanized coarse steel bar grid can be improved, thereby increasing the friction and improving the overall strength.

[0012] (2) By setting up concrete cast-in-place ecological trenches, strip trenches and planting soil, ecological slopes can be formed, which have certain air permeability and drainage performance. At the same time, the plant roots can be used to protect the soil and prevent soil loss. By setting up drainage outlets, excess rainwater can be discharged to prevent water accumulation.

[0013] (3) By setting up pre-embedded piles, the hot-dip galvanized coarse steel bar grid can be reinforced. By setting up a hot-dip galvanized coarse steel bar grid composed of several coarse threaded steel bars, several transverse bars and several longitudinal bars, as well as a hot-dip galvanized fine steel bar grid I, a hot-dip galvanized inclined steel bar grid and a hot-dip galvanized fine steel bar grid II composed of fine steel wire I and fine steel wire II, the constraint force on the backfill soil layer, fine sand and gravel layer and soil cover layer can be improved, thereby improving the overall strength and service life of the earth retaining wall. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the reinforced soil retaining wall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A magnified view of a portion of the image;

[0018] Figure 3 This is a schematic diagram of the connection structure between the hot-dip galvanized fine steel bar grid and the hot-dip galvanized coarse steel bar grid and the hot-dip galvanized oblique steel bar grid of this utility model;

[0019] Figure 4 This is a schematic diagram of the hot-dip galvanized steel bar grid structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the hot-dip galvanized fine steel bar grid and the diagonal tie bar of this utility model;

[0021] In the diagram: 1. Backfill soil layer; 2. Fine gravel layer; 3. Hot-dip galvanized fine steel bar grid one; 4. Hot-dip galvanized coarse steel bar grid; 5. Hot-dip galvanized inclined steel bar grid; 6. Reverse filter geotextile layer; 7. Crushed stone water-conducting layer one; 8. Soil cover layer; 9. Hot-dip galvanized fine steel bar grid two; 10. Crushed stone water-conducting layer two; 11. Cast-in-place concrete slope; 12. Cast-in-place concrete ecological trench; 13. Buffer water receiving trench; 14. Strip channel; 15. Planting soil; 16. Drainage outlet; 17. Embedded pile; 18. Coarse threaded steel bar; 19. Horizontal reinforcement; 20. Longitudinal reinforcement; 21. Limiting steel bar column; 22. Fine steel wire one; 23. Fine steel wire two; 24. Diagonal tie bar. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Depend on Figures 1 to 3This utility model discloses a reinforced soil retaining wall structure, comprising several backfill soil layers 1 and several fine sand and gravel layers 2, which are laid alternately from bottom to top to form a layered structure. Hot-dip galvanized fine steel bar grids 3 are laid inside the backfill soil layers 1, and hot-dip galvanized coarse steel bar grids 4 connected to the hot-dip galvanized fine steel bar grids 3 are laid between the backfill soil layers 1 and the fine sand and gravel layers 2. Hot-dip galvanized inclined steel bar grids 5 are installed near the slope position of the hot-dip galvanized fine steel bar grids 3 and the hot-dip galvanized coarse steel bar grids 4. The top layer of backfill soil... 1. A reverse filter geotextile layer 6 is laid at the top. A crushed stone water-conducting layer 7 is laid at the top of the reverse filter geotextile layer 6. A soil covering layer 8 is laid at the top of the crushed stone water-conducting layer 7. Several hot-dip galvanized fine steel bar grids 9 are laid inside the soil covering layer 8. A stepped crushed stone water-conducting layer 10 is filled on the side of the backfill soil layer 1 and the fine sand and gravel layer 2 away from the slope. A cast-in-place concrete slope 11 is set on the side of the backfill soil layer 1 and the fine sand and gravel layer 2 close to the slope. Several cast-in-place concrete ecological troughs 12 are set on the side of the cast-in-place concrete slope 11.

[0024] The fine gravel layer 2 can improve the density of the connection with the hot-dip galvanized coarse steel grid 4, and increase friction and restraint. The hot-dip galvanized fine steel grid 3 can cooperate with the hot-dip galvanized coarse steel grid 4 and the hot-dip galvanized inclined steel grid 5 to further reinforce the backfill soil layer 1 and the fine gravel layer 2 at the slope location. The reverse filter geotextile layer 6 can have water permeability and at the same time prevent a large amount of rainwater from seeping in. The crushed stone water-conducting layer 7 can improve water conductivity and prevent a large amount of rainwater from entering the interior of the backfill soil layer 1 and the fine gravel layer 2. The stepped crushed stone water-conducting layer 2 10 can guide the water inside the slope soil and further prevent water from eroding the backfill soil layer 1 and the fine gravel layer 2. The cast-in-place concrete slope 11 can improve the stability of the edge. The cast-in-place concrete ecological trench 12 can be planted with vegetation to form an ecological slope.

[0025] Depend on Figure 1 and Figure 2 As shown, a buffer water receiving trough 13 is provided in the middle of the concrete cast-in-place slope 11, and several strip channels 14 connected to the concrete cast-in-place ecological trough 12 are provided on the concrete cast-in-place slope 11. The interior of the concrete cast-in-place ecological trough 12 and the strip channels 14 are filled with planting soil 15, and a drainage outlet 16 is provided at the bottom of one side of the concrete cast-in-place ecological trough 12.

[0026] The buffer water receiving trough 13 can guide rainwater and prevent rainwater from generating a large impact force that could damage the ecological slope during heavy rain. The strip channel 14 can improve the drainage effect and facilitate the growth and extension of plant roots, and can use plant roots to protect the soil. The drainage outlet 16 can improve the drainage effect and prevent water accumulation.

[0027] Depend on Figures 1 to 5As shown, a pre-embedded pile 17 is provided on the side of the hot-dip galvanized coarse steel bar grid 4 away from the hot-dip galvanized fine steel bar grid 3. The pre-embedded pile 17 is an inclined structure. The hot-dip galvanized coarse steel bar grid 4 is composed of several coarse threaded steel bars 18, several transverse bars 19 and several longitudinal bars 20. The transverse bars 19 are wound around the coarse threaded steel bars 18 and welded to them. The longitudinal bars 20 are welded to the transverse bars 19. Several limiting steel bar columns 21 matching the hot-dip galvanized fine steel bar grid 3 are welded to the bottom end of one of the coarse threaded steel bars 18. The hot-dip galvanized fine steel bar grid 3, the hot-dip galvanized inclined steel bar grid 5 and the hot-dip galvanized fine steel bar grid 29 are all composed of fine steel wire 12 and fine steel wire 23 welded together. The hot-dip galvanized inclined steel bar grid 5 is welded to the hot-dip galvanized coarse steel bar grid 4, the hot-dip galvanized fine steel bar grid 3 and the hot-dip galvanized fine steel bar grid 29. Several diagonal tie bars 24 are welded to the top of the hot-dip galvanized fine steel bar grid 3. The top of the diagonal tie bars 24 is welded to the coarse threaded steel bars 18.

[0028] The pre-embedded pile 17 can pull the hot-dip galvanized coarse steel bar grid 4 to improve the overall strength. The pre-embedded pile 17 is made of reinforced concrete column. During installation, it can be pre-driven into the slope soil using a pile driver. The coarse threaded steel bar 18 can form a limiting effect and increase the overall friction. The limiting steel bar column 21 can form a limiting effect with the hot-dip galvanized fine steel bar grid 3, so that the hot-dip galvanized fine steel bar grid 3 and the hot-dip galvanized coarse steel bar grid 4 form an integrated structure. The diagonal tie bar 24 further realizes the limiting effect and improves the overall strength of the reinforced soil retaining wall.

[0029] In this process, the inclusion of a gravel drainage layer allows for the diversion and drainage of rainwater within the soil cover layer. A geotextile filter layer provides permeability while preventing excessive rainwater infiltration; its resistance is greater than that of the first gravel drainage layer, allowing a large amount of rainwater to drain through and preventing it from seeping into the backfill and fine gravel layers. A stepped gravel drainage layer further diverts water from within the slope, preventing significant water penetration into the backfill and fine gravel layers. The alternating layering of backfill and fine gravel layers from bottom to top enhances the compactness at the connection with the hot-dip galvanized steel reinforcement grid, thereby increasing friction and overall strength. By setting up cast-in-place concrete ecological trenches, strip channels, and planting soil, an ecological slope can be formed, which has a certain degree of aeration and drainage performance. At the same time, the plant roots can be used to protect the soil and prevent soil erosion. Drainage outlets can be set up to drain excess rainwater and prevent water accumulation. By setting up pre-embedded piles, the hot-dip galvanized coarse steel bar grid can be reinforced. By setting up a hot-dip galvanized coarse steel bar grid composed of several coarse threaded steel bars, several transverse bars, and several longitudinal bars, as well as a hot-dip galvanized fine steel bar grid I, hot-dip galvanized oblique steel bar grid, and hot-dip galvanized fine steel bar grid II composed of two thin steel wires, the constraint force on the backfill soil layer, fine gravel layer, and soil cover layer can be improved, thereby improving the overall strength and service life of the earth retaining wall.

Claims

1. A reinforced soil retaining wall structure comprising a plurality of backfill soil layers (1) and a plurality of fine sand and gravel layers (2), characterized in that: The backfill layer (1) and the fine sand layer (2) are alternately laid from bottom to top to form a layered structure, the backfill layer (1) is internally laid with a hot-dip galvanized fine steel bar grid (3), the backfill layer (1) and the fine sand layer (2) are laid with a hot-dip galvanized thick steel bar grid (4) connected with the hot-dip galvanized fine steel bar grid (3), the hot-dip galvanized fine steel bar grid (3) and the hot-dip galvanized thick steel bar grid (4) are provided with a hot-dip galvanized inclined steel bar grid (5) near the slope position, the top layer of the backfill layer (1) is laid with a filter cloth layer (6) at the top end, the filter cloth layer (6) is laid with a gravel water guide layer (7) at the top end, the gravel water guide layer (7) is laid with a soil covering layer (8) at the top end, the soil covering layer (8) is internally laid with a plurality of hot-dip galvanized fine steel bar grids (9), the backfill layer (1) and the fine sand layer (2) are filled with a stepped gravel water guide layer (10) away from the slope side, the backfill layer (1) and the fine sand layer (2) are provided with a concrete cast-in-situ slope (11) near the slope side, and the concrete cast-in-situ slope (11) is provided with a plurality of concrete cast-in-situ ecological grooves (12) on the side.

2. The reinforced soil retaining wall structure of claim 1, wherein: The middle position of the concrete cast-in-situ slope (11) is provided with a buffer water receiving groove (13).

3. The reinforced soil retaining wall structure according to claim 1, wherein: A plurality of strip-shaped through grooves (14) are formed in the concrete cast-in-situ slope (11) and communicate with the concrete cast-in-situ ecological grooves (12), the concrete cast-in-situ ecological grooves (12) and the strip-shaped through grooves (14) are both filled with planting soil (15), and a drainage port (16) is formed at the bottom of one side of the concrete cast-in-situ ecological groove (12).

4. The reinforced soil retaining wall structure according to claim 1, wherein: The hot-dip galvanized thick steel bar grid (4) is provided with a pre-buried pile (17) away from the hot-dip galvanized fine steel bar grid (3), and the pre-buried pile (17) is an inclined structure.

5. The reinforced soil retaining wall structure according to claim 1, wherein: The hot-dip galvanized thick steel bar grid (4) is composed of a plurality of thick threaded steels (18), a plurality of horizontal ribs (19) and a plurality of longitudinal ribs (20), the horizontal ribs (19) are wound on the thick threaded steels (18) and are welded and connected with the thick threaded steels (18), the longitudinal ribs (20) are welded and connected with the horizontal ribs (19), and the bottom end of one of the thick threaded steels (18) is welded with a plurality of limiting steel bar columns (21) matched with the hot-dip galvanized fine steel bar grid (3).

6. A reinforced soil retaining wall structure according to claim 5 wherein: The hot-dip galvanized fine steel bar grid (3), the hot-dip galvanized inclined steel bar grid (5) and the hot-dip galvanized fine steel bar grid (9) are all welded and composed of fine steel wires (22) and fine steel wires (23), the hot-dip galvanized inclined steel bar grid (5) is welded and connected with the hot-dip galvanized thick steel bar grid (4), the hot-dip galvanized fine steel bar grid (3) and the hot-dip galvanized fine steel bar grid (9), the top end of the hot-dip galvanized fine steel bar grid (3) is welded with a plurality of inclined tension bars (24), and the top end of the inclined tension bar (24) is welded and connected with the thick threaded steel (18).

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