Anti-slip supporting and retaining device for roadbed slope crushed zone

Abstract

The utility model relates to an anti-slip supporting and retaining device for a roadbed slope crushed zone. The retaining wall is arranged along the side face of a roadbed slope, the grouting hole channels are formed in the bottoms of stand columns of the retaining wall, the slide-resistant piles are inserted into the ground of the roadbed slope and communicate with the grouting hole channels, the spiral flow channels are formed in the slide-resistant piles, and the overflow holes communicate with the spiral flow channels. The spiral flow channel is arranged in the middle of the anti-slide pile, the main ribs penetrate through a partition wall of the spiral flow channel, and the anti-slide pile completes grouting concrete filling among the grouting hole channel, the spiral flow channel and the overflow hole in a grouting consolidation mode. The prefabrication degree of the retaining wall and the slide-resistant piles is high, the construction process is simple, convenient and rapid, and meanwhile, due to the arrangement of the slide-resistant piles, the retaining wall has better anti-sliding capacity in a slope broken zone, so that the safety of the whole slope supporting structure is improved, meanwhile, the connection stability between the bottom of the retaining wall and a foundation is enhanced, and the service life of the retaining wall is prolonged. Collapse of the retaining wall is effectively prevented, and the stability of slope supporting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slope treatment, in particular to an anti-slip and displacement retaining device for the broken zone of a subgrade slope. Background Art

[0002] Retaining walls are common retaining structures, which are important load-bearing structures in slope treatment. Different from cast-in-place reinforced concrete retaining walls, precast reinforced concrete retaining walls have the advantages of short assembly period and easy control of construction quality due to the factory-standard prefabrication and on-site installation construction methods. Especially in the construction of anti-slip and displacement retaining in the broken zone of subgrade slopes, due to the short construction period and the limitation of surrounding buildings, the shoulder retaining wall must use precast retaining walls for construction. The prefabrication degree, greening ability and drainage ability of existing precast retaining walls play a crucial role in the construction efficiency and environmental friendliness of retaining walls.

[0003] Chinese Patent with the authorization announcement number CN216339656U discloses a precast and assembled greening retaining wall. The retaining wall is arranged in cooperation with the soil body. The retaining wall includes at least two groups of columns arranged along the side surface of the soil body, and a group of inclined partitions are arranged between adjacent two groups of columns; each group of columns includes at least two columns sequentially connected from bottom to top, and each group of inclined partitions includes a plurality of inclined partitions arranged at equal intervals along the height direction of the columns. The two ends of each inclined partition are respectively installed on adjacent columns through diagonal braces, and a groove for guiding the backflow of the soil body is formed between adjacent two inclined partitions.

[0004] The above prior art solutions have the following defects: Generally, the connection stability between the bottom of the retaining wall and the foundation is insufficient, and it may collapse during use, thereby affecting the stability of slope support. In view of this, we propose a retaining wall solution using anti-slide pile technology to reinforce the bottom of the retaining wall, so as to meet the requirements of anti-slip and displacement retaining in the broken zone of subgrade slopes. Summary of the Utility Model

[0005] The problem to be solved by the utility model is to provide an anti-slip and displacement retaining device for the broken zone of a subgrade slope aiming at the above deficiencies in the prior art, which solves the problem of insufficient connection stability between the bottom of the retaining wall and the foundation and improves the bottom stability of slope support.

[0006] The above utility model purpose of the utility model is achieved through the following technical solutions:

[0007] An anti-slip retaining device for a broken zone of a subgrade slope, comprising a retaining wall arranged along the side of the subgrade slope, a plurality of grouting channels opened at the bottom of the columns of the retaining wall, anti-slide piles inserted underground in the subgrade slope and communicated with the grouting channels, spiral channels opened on the anti-slide piles and a plurality of overflow holes communicated with the spiral channels, and a plurality of main reinforcement bars penetrating through the partition walls of the spiral channels. The anti-slide piles are consolidated by grouting to complete the filling of grouting concrete between the grouting channels, the spiral channels and the overflow holes.

[0008] By adopting the above technical solutions, both the retaining wall and the anti-slide piles are precast reinforced concrete components. During installation, the anti-slide piles are pre-driven into the foundation pits of the external foundation of the subgrade slope. Aggregates are pre-filled in the spiral channels and temporary support is carried out. Then, the retaining wall is installed on the side and the ground surface of the subgrade slope in such a way that the grouting channels are aligned with the anti-slide piles. Then, the grouting concrete is poured into the spiral channels through the grouting channels. Due to the design of the spiral channels, the grouting concrete can be more evenly distributed during the pouring process, thereby improving the bonding strength between the anti-slide piles and the foundation. Also, due to the setting of the overflow holes, it is beneficial to discharge excess water and gas during the grouting process, ensuring the density and quality of the grouting concrete, and then realizing the sequential consolidation between the columns of the retaining wall, the grouting channels, the spiral channels, the overflow holes, the anti-slide piles and the foundation. Then, the remaining components of the retaining wall can be installed in sequence. In addition, by setting grouting channels at the bottom of the columns of the retaining wall and connecting the anti-slide piles with the grouting channels, the close combination of the anti-slide piles and the retaining wall is realized, thereby improving the stability of the bottom of the retaining wall and effectively preventing the collapse problem caused by unstable bottom connection. During this process, due to the high degree of prefabrication of the retaining wall and the anti-slide piles, the construction process is simple and fast, greatly shortening the construction period. At the same time, due to the setting of the anti-slide piles, the retaining wall has better anti-slip ability in the broken zone of the slope, thereby improving the safety of the entire slope support structure, enhancing the connection stability between the bottom of the retaining wall and the foundation, effectively preventing the collapse of the retaining wall, and improving the stability of the slope support.

[0009] The present utility model is further configured as: anti-slip patterns are provided on the surface of the anti-slide piles.

[0010] By adopting the above technical solutions, the setting of the anti-slip patterns increases the roughness of the surface of the anti-slide piles, improves the friction between the anti-slide piles and the surrounding broken zones, and further enhances the anti-slip ability.

[0011] The present utility model is further configured as: the two spiral surfaces of the partition wall of the spiral channel are set as guiding surfaces.

[0012] By adopting the above technical solutions, the design of the guiding surfaces makes the grouting concrete flow more smoothly in the spiral channels, reduces the flow resistance, and improves the pouring efficiency.

[0013] The present utility model is further configured such that: a smooth transition connection is provided between the two guiding surfaces.

[0014] By adopting the above technical solution, the smooth transition connection between the guiding surfaces reduces the resistance during the filling of concrete, making the grouting process smoother, and at the same time avoiding stress concentration of the concrete in the flow channel.

[0015] The present utility model is further configured such that: the overflow holes are arranged at equal intervals along the length direction of the spiral flow channel.

[0016] By adopting the above technical solution, it ensures the uniform distribution of the grouting concrete between the anti-slide pile and the foundation, and avoids structural weaknesses caused by uneven concrete distribution.

[0017] The present utility model is further configured such that: the cross-sectional area of the overflow hole first increases and then decreases along the axial direction.

[0018] By adopting the above technical solution, the concrete can quickly penetrate outside the anti-slide pile during filling and then gradually slow down the filling speed, ensuring the density of the concrete.

[0019] The present utility model is further configured such that: a circular limiting stirrup is welded and fixed to the top of the plurality of main reinforcement bars, and the limiting stirrup is lapped on the top of the partition wall of the spiral flow channel.

[0020] By adopting the above technical solution, the setting of the limiting stirrup can effectively limit the position of the main reinforcement bars during the grouting process, ensuring the stability and reliability of the structure.

[0021] The present utility model is further configured such that: the bottom end of the main reinforcement bar passes through the bottom wall of the anti-slide pile and is inserted into the ground of the roadbed slope.

[0022] By adopting the above technical solution, the bonding depth between the anti-slide pile and the roadbed slope is increased, further improving the stability of the overall structure.

[0023] In summary, the beneficial technical effects of the present utility model are as follows: due to the high degree of prefabrication of the retaining wall and the anti-slide pile, the construction process is simple and fast, greatly shortening the construction period. At the same time, due to the setting of the anti-slide pile, the retaining wall has better anti-sliding ability in the broken zone of the slope, thus improving the safety of the entire slope support structure. At the same time, the connection stability between the bottom of the retaining wall and the foundation is enhanced, effectively preventing the collapse of the retaining wall and improving the stability of the slope support. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the anti-sliding and retaining device for the broken zone of the roadbed slope of the present utility model.

[0025] Figure 2 is a schematic structural view of the retaining wall of the present utility model.

[0026] Figure 3 is a schematic structural view of the anti-slide pile of the present utility model.

[0027] Figure 4 is a schematic connection relationship view among the anti-slide pile, the spiral flow channel and the overflow hole of the present utility model.

[0028] Figure 5 is Figure 4 a partial enlarged schematic view of part A in

[0029] In the figure, 1 is the retaining wall; 11 is the grouting duct; 2 is the anti-slide pile; 21 is the anti-slip pattern; 3 is the spiral flow channel; 31 is the guiding surface; 4 is the overflow hole; 5 is the main reinforcement; 6 is the limiting stirrup; 7 is the grouted concrete. Specific embodiments

[0030] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model clearer and easier to understand, the present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Referring to Figures 1 - 3 , a landslide prevention and retaining device for a broken zone of a roadbed slope disclosed by the present utility model includes a retaining wall 1 arranged along the side surface of the roadbed slope and a plurality of anti-slide piles 2 inserted underground in the roadbed slope. Among them, three pairs of grouting ducts 11 are opened at the bottom of the columns of the retaining wall 1, and the grouting ducts 11 and the anti-slide piles 2 are arranged in one-to-one correspondence. The surface of the anti-slide pile 2 is provided with anti-slip patterns 21. The setting of the anti-slip patterns 21 increases the roughness of the surface of the anti-slide pile 2, improves the friction between the anti-slide pile 2 and the surrounding broken zone, further enhances the anti-sliding ability, and the anti-slide pile 2 is connected between the retaining wall 1 and the surrounding broken zone of the foundation by means of grouting consolidation through the grouting ducts 11.

[0032] Referring to Figure 2 and Figure 4 , a spiral flow channel 3 communicating with the grouting duct 11 and a plurality of overflow holes 4 communicating with the spiral flow channel 3 are opened on the anti-slide pile 2. The anti-slide pile 2 is filled with grouted concrete 7 between the grouting duct 11, the spiral flow channel 3 and the overflow holes 4 by means of grouting consolidation. The design of the spiral flow channel 3 enables the grouted concrete 7 to be more evenly distributed during the grouting process, thereby improving the bonding strength between the anti-slide pile 2 and the foundation. The setting of the overflow holes 4 is beneficial to discharging excess water and gas during the grouting process, ensuring the density and quality of the grouted concrete 7. Referring to Figure 5, wherein, the spiral surfaces on both sides of the partition wall of the spiral channel 3 are set as guiding surfaces 31, and the two guiding surfaces 31 are smoothly connected in a transitional manner. The design of the guiding surface 31 enables the grouted concrete 7 to flow more smoothly in the spiral channel 3, reducing the flow resistance, improving the perfusion efficiency, and the smooth transitional connection between the guiding surfaces 31 reduces the resistance of the concrete during filling, making the grouting process smoother, and at the same time avoiding stress concentration of the concrete in the channel. In addition, the overflow holes 4 are arranged at equal intervals along the length direction of the spiral channel 3, ensuring the uniform distribution of the grouted concrete 7 between the anti-slide pile 2 and the foundation, avoiding structural weaknesses caused by uneven concrete distribution, and the cross-sectional area of the overflow hole 4 first increases and then decreases along the axial direction, enabling the concrete to quickly penetrate outside the anti-slide pile 2 during filling and then gradually slowing down the filling speed, ensuring the compactness of the concrete.

[0033] Referring to Figure 4 , a plurality of main reinforcement bars 5 are penetrated through the partition wall of the spiral channel 3, and the bottom ends of the main reinforcement bars 5 penetrate through the bottom wall of the anti-slide pile 2 and are inserted into the ground of the roadbed slope, increasing the bonding depth between the anti-slide pile 2 and the roadbed slope and further improving the stability of the overall structure. At the same time, a circular limiting stirrup 6 is welded and fixed to the tops of the plurality of main reinforcement bars 5, and the limiting stirrup 6 is lapped on the top of the partition wall of the spiral channel 3. The setting of the limiting stirrup 6 can effectively limit the position of the main reinforcement bars 5 during the grouting process, ensuring the stability and reliability of the structure.

[0034] The implementation principle of this embodiment is as follows: The retaining wall 1 and the anti-slide pile 2 are both precast reinforced concrete components. During installation, the anti-slide pile 2 is pre-driven into the foundation pit of the external ground of the roadbed slope. The spiral channel 3 is pre-filled with aggregate and temporarily supported, and then the retaining wall 1 is installed on the side and surface of the roadbed slope in the way that the grouting duct 11 is aligned with the anti-slide pile 2; then the grouted concrete 7 is poured into the spiral channel 3 through the grouting duct 11, thereby realizing the sequential consolidation between the column of the retaining wall 1, the grouting duct 11, the spiral channel 3, the overflow hole 4, the anti-slide pile 2 and the foundation. Then, the remaining components of the retaining wall 1 are installed in sequence; in addition, by arranging the grouting duct 11 at the bottom of the column of the retaining wall 1 and connecting the anti-slide pile 2 with the grouting duct 11, the close combination between the anti-slide pile 2 and the retaining wall 1 is realized, thereby improving the stability of the bottom of the retaining wall 1 and effectively preventing the collapse problem caused by unstable bottom connection; during this process, due to the high prefabrication degree of the retaining wall 1 and the anti-slide pile 2, the construction process is simple and fast, greatly shortening the construction period. At the same time, due to the setting of the anti-slide pile 2, the retaining wall 1 has better anti-sliding ability in the slope broken zone, thereby improving the safety of the entire slope support structure, enhancing the connection stability between the bottom of the retaining wall 1 and the foundation, effectively preventing the collapse of the retaining wall 1, and improving the stability of the slope support.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A roadbed slope broken zone anti-slip support device, characterized in that: The invention comprises a retaining wall (1) arranged along the side of a roadbed slope, a plurality of grouting channels (11) provided at the bottom of a column of the retaining wall (1), an anti-sliding pile (2) inserted underground in the roadbed slope and connected to the grouting channel (11), a spiral flow channel (3) provided on the anti-sliding pile (2) and a plurality of overflow holes (4) connected to the spiral flow channel (3), and a plurality of main reinforcements (5) penetrated through a partition wall of the spiral flow channel (3), wherein the anti-sliding pile (2) is grout-consolidated to complete the filling of grouting concrete (7) between the grouting channel (11), the spiral flow channel (3) and the overflow holes (4).

2. The anti-slip support device for the broken zone of the roadbed slope according to claim 1 is characterized by: The surface of the anti-slip pile (2) is provided with anti-slip grooves (21).

3. The anti-slip support device for the broken zone of the roadbed slope according to claim 1 is characterized by: The spiral surfaces on both sides of the partition wall of the spiral flow channel (3) are arranged as guide surfaces (31).

4. The anti-slip support device for the broken zone of the roadbed slope according to claim 3 is characterized by: The two guide surfaces (31) are connected with each other in a smooth transition.

5. The anti-slip support device for the broken zone of the roadbed slope according to claim 1 is characterized by: The overflow holes (4) are arranged at equal intervals along the length direction of the spiral flow channel (3).

6. The anti-slip support device for the broken zone of the roadbed slope according to claim 5, characterized in that: The cross-sectional area of ​​the overflow hole (4) first increases and then decreases along the axial direction.

7. The anti-slip support device for the broken zone of the roadbed slope according to claim 1 is characterized by: An annular limiting stirrup (6) is welded and fixed to the top of the plurality of main reinforcements (5), and the limiting stirrup (6) is overlapped on the top of the partition wall of the spiral flow channel (3).

8. The anti-slip support device for the broken zone of the roadbed slope according to claim 1, characterized in that: The bottom end of the main reinforcement (5) passes through the bottom wall of the anti-sliding pile (2) and is inserted into the ground of the roadbed slope.

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