A retaining structure for embankment slopes

Abstract

This utility model discloses a retaining structure for embankment slopes, including anti-slide piles and retaining plates. Multiple anti-slide piles and retaining plates are provided. The anti-slide piles are vertically arranged and spaced apart along the edge of the embankment slope. The lower end of each anti-slide pile is anchored below the original ground level. A slot is vertically recessed on the side of each pair of adjacent anti-slide piles. A retaining plate is vertically arranged between each pair of adjacent anti-slide piles, and each retaining plate has its two sides inserted into the corresponding two slots. This allows the retaining plates to be directly and vertically inserted into the slots of the corresponding two anti-slide piles during assembly, making assembly of the retaining plates more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of slope support technology, and in particular relates to a slope support structure for embankment slopes. Background Technology

[0002] Currently, the main retaining structures for embankment slopes include anti-slide walls, prestressed anchor cables, and pile-slab structures. Pile-slab structures, which combine anti-slide piles and pile-slab walls, are the most widely used. Anti-slide piles are pile structures driven deep into the bedrock to stabilize the slope, while pile-slab walls are retaining walls installed between two adjacent anti-slide piles in various ways to block soil. For high embankment slopes (slopes with an embankment height of 10 meters or more), the large embankment height and the large required depth of anti-slide pile holes make the construction environment more complex. Most anti-slide piles in current pile-slab structures have a rectangular cross-section from top to bottom. During construction, soil is first removed using a rotary drilling rig, then the hole wall is cut with a cutting tool to form the required rectangular hole, followed by the placement of the reinforcing cage and the pouring of concrete. However, the construction process and steps of the rectangular cross-section anti-slide piles are relatively complicated, mainly in the pile hole excavation stage. After the rotary drilling rig removes soil, it is necessary to use a square cutter to trim it, which increases the workload and construction steps. In addition, compared with the rectangular cross-section piles, the circular cross-section piles have a higher degree of mechanization and can save construction time. However, in the pile-slab structure, the connection method between the circular anti-slide piles and the pile retaining plate is more complicated, while the square cross-section anti-slide piles are easier to install the pile retaining plate. Therefore, the rectangular cross-section piles and the circular cross-section piles each have their advantages and disadvantages. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a simple structure for retaining slopes of embankment that makes it easy to install retaining plates between piles.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A retaining structure for embankment slopes includes anti-slide piles and retaining plates. Multiple anti-slide piles and retaining plates are provided. The multiple anti-slide piles are all vertically arranged and distributed at intervals along the edge of the embankment slope. The lower end of each anti-slide pile is anchored below the original ground level. A slot is vertically recessed on the side of two adjacent anti-slide piles that are close to each other. A retaining plate is vertically arranged between two adjacent anti-slide piles, and the two sides of each retaining plate are respectively inserted into the corresponding two slots.

[0005] The beneficial effect of the above technical solution is that when the support plate is assembled between the piles, its two sides can be directly and vertically inserted into the slots of the corresponding two anti-slide piles, which makes the assembly of the support plate more convenient.

[0006] The anti-slide pile in the above technical solution includes an upper pile body and a lower pile body. The cross-section of the upper pile body is a regular polygon, and the cross-section of the lower pile body is circular. The upper pile body and the lower pile body are coaxially distributed and are close to each other at one end to form an interface. The lower pile body is used to anchor to below the original ground surface, and the slot is set on the upper pile body.

[0007] The beneficial effects of the above technical solution are as follows: it enables the anti-slide pile to combine the advantages of both circular and rectangular cross-section piles, while avoiding their respective defects. The upper pile body is easy to connect with the support plate, while the lower pile body is easy to match with the circular pile hole.

[0008] In the above technical solution, the cross-section of the upper pile body is square, and the side length of the upper pile body is equal to the diameter of the lower pile body.

[0009] The beneficial effect of the above technical solution is that it makes the difference in cross-sectional area between the upper and lower piles smaller, which helps to reduce the cost of anti-slide piles while maintaining the structural strength of the anti-slide piles.

[0010] In the above technical solution, a reserved rib is vertically arranged in the middle of the slot. The lower end of the reserved rib is connected to the lower pile body. Both sides of the support plate are provided with vertical through reserved holes. The two sides of the support plate are vertically inserted into the corresponding two slots, and each reserved rib is inserted into the corresponding reserved hole.

[0011] The beneficial effect of the above technical solution is that when the support plate is inserted into the slot, it is simultaneously inserted into the reserved hole through the reserved rib, so as to lock the support plate in the anti-slip pile to prevent the two from loosening.

[0012] The anti-slide piles described in the above technical solution are concrete piles containing a steel reinforcement cage.

[0013] The advantages of the above technical solution are that it makes the anti-slide piles low in cost and high in structural strength.

[0014] In the above technical solution, the lower end of the reserved reinforcement bar is anchored into the lower pile body and connected to the reinforcement cage or integrally formed.

[0015] The beneficial effect of the above technical solution is that it makes the pre-reserved reinforcement installed on the anti-slide pile more secure.

[0016] The steel cage described in the above technical solution includes a cylindrical cage body and internal support members disposed within the cage body. The internal support members include a lower support member and an upper support member. The lower end of the cage body is cylindrical and cooperates with the lower pile body, and the upper end of the cage body is square cylindrical and cooperates with the upper pile body. The lower support member is a triangular ring and is horizontally disposed below the interface, with its three vertices connected to the cage body. The upper support member is shaped like a "well" and is horizontally disposed above the interface, with its eight vertices connected to the cage body.

[0017] The beneficial effects of the above technical solution are: it makes the structural strength of the steel cage higher, and at the same time, the compatibility between the steel cage and the anti-slide pile is better, thereby improving the overall structural strength of the anti-slide pile.

[0018] The cage described in the above technical solution includes multiple longitudinal ribs and multiple hoop rings. The multiple hoop rings are arranged horizontally and distributed at intervals in the vertical direction. The multiple longitudinal ribs are arranged vertically and distributed in a ring-like pattern around the multiple hoop rings at intervals. The multiple longitudinal ribs are connected to the multiple hoop rings at their intersections to form a cylindrical cage.

[0019] The beneficial effect of the above technical solution is that the cage body is connected by longitudinal bars and hoops to form a mesh, which makes its structural strength higher after the concrete is poured and formed.

[0020] The longitudinal reinforcement in the above technical solution includes four vertical longitudinal reinforcements and multiple bent longitudinal reinforcements. The hoop includes multiple round hoops and multiple square hoops. The four vertical longitudinal reinforcements are arranged vertically and evenly distributed along the circumferential direction. Between two adjacent vertical longitudinal reinforcements, multiple bent longitudinal reinforcements are arranged vertically at intervals. Each bent longitudinal reinforcement bends outward at the interface between the upper pile body and the lower pile body. The multiple round hoops are located below the interface so that the lower end of the cage body is cylindrical. The multiple square hoops are located above the interface so that the upper end of the cage body is square cylindrical. The four vertical longitudinal reinforcements are located at the middle positions of the four sides of the upper pile body.

[0021] The beneficial effects of the above technical solution are as follows: the upper end of the cage is in the shape of a square tube and matches the upper pile body, while the lower end of the cage is in the shape of a cylinder and matches the lower pile body. This makes the structure of the entire anti-slide pile high, especially the structural strength of the four corners of the upper pile body can also be strengthened.

[0022] In the above technical solution, the positions of the square hoop rings corresponding to the slots are all recessed inward to form a clearance area, and the vertical longitudinal ribs near the clearance area are located within the clearance area to form reserved ribs.

[0023] The beneficial effect of the above technical solution is that it makes the reserved reinforcement bars on the anti-slide pile more secure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the fill slope retaining structure described in an embodiment of this utility model;

[0025] Figure 2 This is another schematic diagram of the fill slope retaining structure described in this embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the assembly of the baffle plate between two anti-slide piles in an embodiment of this utility model;

[0027] Figure 4 This is a bottom view of the anti-slide pile described in this embodiment of the utility model;

[0028] Figure 5 This is a front view of the anti-slide pile described in the embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the steel reinforcement cage inside the anti-slide pile in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the cross-section of the lower pile body described in this embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the cross-section at the interface of the anti-slide pile in the embodiment of this utility model;

[0032] Figure 9 This is a schematic diagram of the cross-section of the upper pile body described in this embodiment of the utility model;

[0033] Figure 10 This is a schematic diagram of the bending of the longitudinal rib at the interface in an embodiment of this utility model.

[0034] In the diagram: 100, anti-slide pile; 110, slot; 111, reserved reinforcement; 120, upper pile body; 130, lower pile body; 140, steel cage; 141, cage body; 1411, longitudinal reinforcement; 1411a, vertical longitudinal reinforcement; 1411b, bent longitudinal reinforcement; 1412, hoop; 1412a, round hoop; 1412b, square hoop; 14121, avoidance zone; 142a, lower support; 142b, upper support; 200, support plate; 210, reserved hole; 300, embankment slope. Detailed Implementation

[0035] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0036] like Figure 1 and Figure 2 As shown, this embodiment provides a retaining structure for an embankment slope, including anti-slide piles 100 and retaining plates 200. Multiple anti-slide piles 100 and retaining plates 200 are provided. The multiple anti-slide piles 100 are vertically arranged and spaced along the edge of the embankment slope 300. The lower end of each anti-slide pile 100 is anchored below the original ground level. A slot 110 is vertically recessed on the side of each adjacent anti-slide pile 100. A retaining plate 200 is vertically arranged between adjacent anti-slide piles 100, and both sides of each retaining plate 200 are inserted into the corresponding two slots 110. This allows the retaining plates to be directly and vertically inserted into the slots of the corresponding two anti-slide piles during assembly between the piles, making assembly of the retaining plates more convenient.

[0037] like Figures 3-5 As shown, the anti-slide pile 100 in the above technical solution includes an upper pile body 120 and a lower pile body 130. The cross-section of the upper pile body 120 is a regular polygon, and the cross-section of the lower pile body 130 is circular. The upper pile body 120 and the lower pile body 130 are coaxially distributed and form an interface with each other at one end. The lower pile body 130 is used to anchor below the original ground level. The slot 110 is provided on the upper pile body 120. This allows the anti-slide pile to combine the advantages of circular cross-section piles and rectangular cross-section piles while avoiding their disadvantages. The upper pile body is convenient to connect with the support plate, while the lower pile body is convenient to cooperate with the circular pile hole. Specifically, the cross-section of the upper pile body 120 is square, and the side length of the upper pile body 120 is equal to the diameter of the lower pile body 130. This makes the difference in cross-sectional area between the upper and lower pile bodies small, which is beneficial to reduce the cost of the anti-slide pile while maintaining the structural strength of the anti-slide pile.

[0038] like Figure 3 and Figure 5As shown, in the above technical solution, a reserved rib 111 is vertically arranged in the middle of the slot 110. The lower end of the reserved rib 111 is connected to the lower pile body 130. Both sides of the support plate 200 are provided with vertically penetrating reserved holes 210. The two sides of the support plate 200 are vertically inserted into the corresponding two slots 110, and each reserved rib 111 is inserted into the corresponding reserved hole 210. In this way, when the support plate is inserted into the slot, the reserved rib is simultaneously inserted into the reserved hole to lock the support plate in the anti-slip pile to prevent the two from loosening.

[0039] In this embodiment, the reserved rib is located at the middle position of the bottom wall of the slot (the position of the upper end of the lower pile corresponding to the slot constitutes the bottom wall of the slot). The upper end of the reserved rib can be located inside the slot and can be flush with the upper end of the slot or protrude above the slot. The reserved rib is a straight rod.

[0040] During construction of this fill slope retaining structure, anti-slide piles are first installed along the edge of the fill slope (the area between two adjacent anti-slide piles is called the pile space). Then, retaining plates are vertically lowered into the pile space, ensuring that the reserved holes on both sides of the retaining plate are aligned with the corresponding two reserved reinforcing bars. The retaining plate is then slowly lowered so that the reserved reinforcing bars are inserted into the corresponding reserved holes, and the two sides of the retaining plate are also inserted into the slots. Finally, the retaining plate is slowly lowered until the lower end of the retaining plate is flush with the original ground.

[0041] like Figure 6 As shown, the anti-slide pile 100 in the above technical solution is a concrete pile with a steel cage 140 inside, which makes the anti-slide pile low in cost and high in structural strength.

[0042] like Figures 6-10As shown, in the above technical solution, the lower end of the reserved reinforcement 111 is anchored into the lower pile body 130 and connected to or integrally formed with the reinforcing cage 140, thus making the reserved reinforcement more securely installed on the anti-slide pile. Specifically, the reinforcing cage 140 includes a cylindrical cage body 141 and internal support members disposed within the cage body 141 (multiple internal support members are provided, and the multiple internal support members are vertically spaced within the cage body). The internal support members include a lower support member 142a and an upper support member 142b. The lower end of the cage body 141 is a cylindrical shape that cooperates with the lower pile body 130, and the upper end of the cage body 141 is a square cylindrical shape that cooperates with the upper pile body 120. Component 142a is a triangular ring. The lower support component 142a is horizontally positioned below the interface, and its three vertices are connected to the cage body 141. The upper support component 142b is in the shape of a "well". The upper support component 142b is horizontally positioned above the interface, and its eight vertices are connected to the cage body 141. This makes the upper end of the cage body cylindrical (the upper support component is equivalent to four rods connected in a "well" shape, with each rod having one vertex at each end) and cooperates with the upper pile body. The lower end of the cage body is cylindrical and cooperates with the lower pile body. This makes the entire anti-slide pile structure strong, especially strengthening the structural strength at the four corners of the upper pile body.

[0043] In this embodiment, the height of the support plate is the same as the height of the upper pile. Figure 1 and Figure 2 In the text, "A" represents the original ground surface. Figure 5 , Figure 6 and Figure 10 In the middle, "B" represents the interface at the junction of the upper and lower pile bodies. When the lower end of the anti-slide pile is anchored into the original ground, the interface is in contact with the original ground.

[0044] In this embodiment, the corners corresponding to the four prisms of the upper pile body protrude outside the lower pile body. Since the structural strength corresponding to the four protruding positions is relatively low, in this embodiment, the cage body is expanded outward and shaped into a square tube at the position above the interface to ensure that the structural strength at each edge of the upper pile body is better.

[0045] like Figure 6 , Figure 7 and Figure 9As shown, the cage 141 in the above technical solution includes multiple longitudinal ribs 1411 and multiple hoop rings 1412. The multiple hoop rings 1412 are all horizontally arranged and spaced apart in the vertical direction. The multiple longitudinal ribs 1411 are all vertically arranged and spaced apart in a ring around the multiple hoop rings 1412. The multiple longitudinal ribs 1411 are connected to the multiple hoop rings 1412 at the intersection to form a cylindrical cage 141. In this way, the cage is connected by longitudinal ribs and hoop rings to form a mesh, which makes its structural strength higher after the concrete is poured and formed. The use of longitudinal reinforcement and hoop rings to form a ring-shaped structure is common knowledge in concrete pouring technology. However, in this embodiment, the upper end of the cage is square and the lower end is cylindrical. Furthermore, the corners of the four edges of the upper end of the cage need to protrude (similar to the corners of the four edges of the upper pile protruding outside the lower pile). Therefore, in this embodiment, some of the longitudinal reinforcement of the cage needs to be bent outward at the interface to expand the cavity, and the shape of the hoop rings also needs to be adapted accordingly.

[0046] Specifically, such as Figures 7-9 As shown, the longitudinal reinforcement 1411 includes four upright longitudinal reinforcements 1411a and multiple bent longitudinal reinforcements 1411b. The hoop 1412 includes multiple circular hoop 1412a and multiple square hoop 1412b. The four upright longitudinal reinforcements 1411a are arranged vertically and evenly distributed along the circumferential direction. Between two adjacent upright longitudinal reinforcements 1411a, multiple bent longitudinal reinforcements 1411b are arranged vertically at intervals. Each bent longitudinal reinforcement 1411b extends outward at the interface between the upper pile body 120 and the lower pile body 130. The cage body 141 is bent, and multiple circular hoop rings 1412a are located below the interface, while multiple square hoop rings 1412b are located above the interface, so that the lower end of the cage body 141 is cylindrical and the upper end of the cage body 141 is square cylindrical. The four vertical longitudinal bars 1411a are located at the middle positions of the four sides of the upper pile body 120, so that the upper end of the cage body is square cylindrical and matches the upper pile body, while the lower end of the cage body is cylindrical and matches the lower pile body. This makes the entire anti-slide pile structure have high strength.

[0047] In the above technical solution, the square hoop 1412b corresponding to the slot 110 is recessed inward to form a relief area 14121, and the vertical longitudinal bar 1411a near the relief area 14121 is located in the relief area 14121 to form the reserved bar 111, thus making the reserved bar more secure on the anti-slide pile.

[0048] In this embodiment, in order to further improve the structural strength of the anti-slide pile, some of the circular hoop rings and some of the square hoop rings can be made of thicker steel bars, and the thickened hoop rings and the unthickened hoop rings are distributed alternately.

[0049] Specifically, such as Figure 8 and Figure 10 As shown, the cage in this embodiment may include 24 longitudinal ribs, of which four are upright longitudinal ribs and the remaining 20 are bent longitudinal ribs. That is, there are 5 bent longitudinal ribs between two adjacent bent longitudinal ribs. The bent longitudinal ribs closer to the upright longitudinal ribs have a smaller degree of bending at the interface (the bending angle α can be 30°, but the length of the bending point can be different, and the length of the bending point is positively correlated with the degree of bending).

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A retaining structure for embankment slopes, characterized in that, The system includes anti-slide piles (100) and baffles (200). Multiple anti-slide piles (100) and baffles (200) are provided. The multiple anti-slide piles (100) are all vertically arranged and distributed at intervals along the edge of the fill slope (300). The lower end of each anti-slide pile (100) is anchored below the original ground. A slot (110) is vertically recessed on the side of each two adjacent anti-slide piles (100). A baffle (200) is vertically arranged between two adjacent anti-slide piles (100), and the two sides of each baffle (200) are respectively inserted into the corresponding two slots (110). The anti-slide pile (100) includes an upper pile body (120) and a lower pile body (130). The cross-section of the upper pile body (120) is a regular polygon, and the cross-section of the lower pile body (130) is circular. The upper pile body (120) and the lower pile body (130) are coaxially distributed and are close to each other at one end to form an interface. The lower pile body (130) is used to anchor to below the original ground. The slot (110) is provided on the upper pile body (120). The cross-section of the upper pile body (120) is square, and the side length of the upper pile body (120) is equal to the diameter of the lower pile body (130).

2. The retaining structure for embankment slopes according to claim 1, characterized in that, A reserved rib (111) is vertically arranged in the middle of the slot (110). The lower end of the reserved rib (111) is connected to the lower pile body (130). Both sides of the support plate (200) are provided with vertically penetrating reserved holes (210). Both sides of the support plate (200) are vertically inserted into the corresponding two slots (110), and each reserved rib (111) is inserted into the corresponding reserved hole (210).

3. The retaining structure for embankment slopes according to claim 2, characterized in that, The anti-slide pile (100) is a concrete pile with a steel cage (140) inside.

4. The retaining structure for embankment slopes according to claim 3, characterized in that, The lower end of the reserved reinforcement bar (111) is anchored into the lower pile body (130) and connected to the steel cage (140) or integrally formed.

5. The retaining structure for embankment slopes according to claim 3, characterized in that, The steel cage (140) includes a cylindrical cage body (141) and an inner support member disposed within the cage body (141). The inner support member includes a lower support member (142a) and an upper support member (142b). The lower end of the cage body (141) is a cylindrical shape that cooperates with the lower pile body (130), and the upper end of the cage body (141) is a square cylindrical shape that cooperates with the upper pile body (120). The lower support member (142a) is a triangular ring and is horizontally disposed below the interface, with its three vertices connected to the cage body (141). The upper support member (142b) is a "well" shape and is horizontally disposed above the interface, with its eight vertices connected to the cage body (141).

6. The retaining structure for embankment slopes according to claim 5, characterized in that, The cage (141) includes multiple longitudinal ribs (1411) and multiple hoop rings (1412). The multiple hoop rings (1412) are all horizontally arranged and spaced apart in the vertical direction. The multiple longitudinal ribs (1411) are all vertically arranged and spaced apart in a ring around the multiple hoop rings (1412). The multiple longitudinal ribs (1411) are connected to the multiple hoop rings (1412) at the intersection to form a cylindrical cage (141).

7. The retaining structure for embankment slopes according to claim 6, characterized in that, The longitudinal reinforcement (1411) includes four vertical longitudinal reinforcements (1411a) and multiple bent longitudinal reinforcements (1411b). The hoop (1412) includes multiple circular hoops (1412a) and multiple square hoops (1412b). The four vertical longitudinal reinforcements (1411a) are arranged vertically and evenly distributed along the circumferential direction. Between two adjacent vertical longitudinal reinforcements (1411a), multiple bent longitudinal reinforcements (1411b) are arranged vertically at intervals. Each bent longitudinal reinforcement (1411a) 1411b) The cage body (1411) bends outward at the interface between the upper pile body (120) and the lower pile body (130), and multiple circular hoop rings (1412a) are located below the interface, so that the lower end of the cage body (141) is cylindrical, and multiple square hoop rings (1412b) are located above the interface, so that the upper end of the cage body (141) is square cylindrical, and four vertical longitudinal bars (1411a) are located at the middle position of the four sides of the upper pile body (120).

8. The retaining structure for embankment slopes according to claim 7, characterized in that, The square hoop (1412b) is recessed inward at the position corresponding to the slot (110) to form a relief area (14121), and the vertical longitudinal bar (1411a) near the relief area (14121) is located in the relief area (14121) to form a reserved bar (111).

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