Three rows of connected pipe piles arranged along a slope

Abstract

This utility model discloses a method for installing three rows of interconnected pipe piles along a slope, including a buttress retaining wall, a first pipe pile, a second pipe pile, and a third pipe pile. The first, second, and third pipe piles are arranged vertically side by side. The height of the first pipe pile is equal to the height of the second pipe pile, which is greater than the height of the third pipe pile. A horizontal upper connecting beam is welded to the top of the first and second pipe piles, and a horizontal lower connecting beam is welded between the top of the third pipe pile and the first and second pipe piles. A first reinforced soil block is laid between the buttress retaining wall and the first pipe pile. A backfill layer is laid in the middle of the first, second, and third pipe piles, and a second reinforced soil block is laid at the top of the first, second, and third pipe piles. This utility model, by installing three rows of interconnected pipe piles at staggered heights, allows them to work together, layering the stress-bearing surface to effectively buffer the impact force on the slope and increase the overall strength.

Description

Technical Field

[0001] This utility model relates to the field of slope protection engineering technology, specifically to a method of setting three rows of interconnected pipe piles along a slope. Background Technology

[0002] Steel pipe piles have a wide range of applications, and their construction offers advantages such as small equipment size, small construction area, fast construction speed, high construction quality, less dust and mud pollution, and high degree of mechanization. With the development of infrastructure construction, the application fields of steel pipe piles have also become more extensive, with widespread use in highways, bridges, infrastructure foundation treatment, slope erosion protection, and landslide control.

[0003] With the rapid development of urban infrastructure, many buildings are constructed on slopes, which places higher demands on the permanent support engineering of high slopes with limited land area. Conventional support methods include gravity retaining walls, cantilever retaining walls, buttress retaining walls, cantilever piles, double-row piles, and other support structures. However, with the increasing safety requirements of buildings, traditional retaining walls are no longer suitable. Therefore, in order to ensure the safe operation of buildings, slope protection engineering has emerged. Slope protection engineering is to protect the safety of slopes and their environment, and it involves the support and protection measures taken for slopes.

[0004] Currently, the selected retaining structures are mostly pipe piles, and the pipe pile structures used are mostly parallel double-row pile structures, which have limited bearing strength. Therefore, this application proposes a method of setting three rows of connected pipe piles along the slope. Summary of the Invention

[0005] The purpose of this utility model is to provide a method for setting three rows of interconnected pipe piles along a slope to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a system of three rows of interconnected pipe piles along a slope, including a buttress retaining wall, a first pipe pile, a second pipe pile, and a third pipe pile. The first, second, and third pipe piles are arranged vertically side by side. The height of the first pipe pile is equal to the height of the second pipe pile, which is greater than the height of the third pipe pile. The tops of the first and second pipe piles are horizontally welded with upper connecting beams. The top of the third pipe pile is horizontally welded with a lower connecting beam between it and the first and second pipe piles. A buttress retaining wall is vertically arranged on one side of the first pipe pile. A first reinforced soil block is laid between the buttress retaining wall and the first pipe pile. A backfill layer is laid in the middle of the first, second, and third pipe piles, and the first reinforced soil block is laid on top of the backfill layer. A second reinforced soil block is laid at the top of the first, second, and third pipe piles, and the second reinforced soil block is located above the backfill layer.

[0007] Preferably, the bottom end of one side of the buttress retaining wall is provided with a buffer slope, and the other side of the buttress retaining wall has an inclined structure. The interior of the buttress retaining wall is fixed with transverse reinforcing bars and longitudinal reinforcing bars, and the transverse reinforcing bars and longitudinal reinforcing bars are arranged perpendicular to each other.

[0008] Preferably, both the first and second reinforced soil blocks have reinforcing steel bars laid horizontally and uniformly inside.

[0009] Preferably, a first pile plate wall is vertically installed in the backfill layer between the buttress retaining wall and the first pipe pile, a second pile plate wall is vertically installed in the backfill layer at the location of the third pipe pile, and a third pile plate wall is vertically installed in the backfill layer outside the third pipe pile.

[0010] Preferably, a first C10 rubble concrete backfill sealing layer is laid at the bottom of the backfill soil layer at the locations of the first and second pipe piles, and a second C10 rubble concrete backfill sealing layer is laid at the bottom of the backfill soil layer at the location of the third pipe pile.

[0011] Preferably, a stepped interface layer is provided at the bottom of the backfill soil layer outside the third pipe pile, and the interface layer is covered with crushed stone, which serves as a filter layer to facilitate drainage.

[0012] Preferably, a sealing plate is fixed between each adjacent first pipe pile, and a filter layer is laid inside the sealing plate.

[0013] Preferably, the sealing plate has drainage holes evenly spaced and inclined, and the sealing plate has expansion joints vertically spaced.

[0014] Preferably, the first pipe pile has uniformly opened anchor cable holes, and anchor rods are installed at an angle in the anchor cable holes, with the anchor rods penetrating through the second and third pipe piles.

[0015] Preferably, one end of the second reinforced soil block is built with a reinforced concrete wall, the upper surface of the second reinforced soil block is covered with a rammed clay waterproof layer, and a water interception ditch is horizontally opened on the upper surface of the second reinforced soil block near the reinforced concrete wall.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by setting three rows of interconnected pipe piles with staggered heights, they can cooperate with each other to set the stress surface in layers, which can better buffer the impact force on the slope and increase the overall strength; at the same time, in conjunction with the anchor structure, the bearing capacity of the slope is further improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0018] Figure 2This is a schematic diagram of the three-row interconnected pipe pile structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the buttress-type retaining wall structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the top structure of the second reinforced soil retaining block of this utility model;

[0021] Figure 5 This is a schematic diagram of the front structure of the first pipe pile of this utility model;

[0022] Figure 6 This is a partial structural diagram of the front of the first pipe pile of this utility model;

[0023] Figure 7 This is a schematic diagram of the anchor bolt position structure of this utility model;

[0024] Figure 8 This is a schematic diagram of the drainage hole structure of this utility model.

[0025] In the diagram: 1. Buttress retaining wall; 101. Buffer slope; 102. Transverse reinforcement; 103. Longitudinal reinforcement; 2. First reinforced soil block; 3. First pile-slab wall; 4. First pipe pile; Anchor cable hole; 402. Anchor rod; 5. Second pipe pile; 6. Third pipe pile; 7. Second pile-slab wall; 8. First C10 rubble concrete backfill sealing layer; 9. Second C10 rubble concrete backfill sealing layer; 10. Boundary layer; 11. Third pile-slab wall; 12. Backfill layer; 13. Lower connecting beam; 14. Sealing plate; 1401. Expansion joint; 1402. Drainage hole; 15. Filter layer; 16. Reinforced concrete wall surface; 17. Upper connecting beam; 18. Second reinforced soil block; 1801. Compacted clay waterproof layer; 1802. Intercepting ditch; 19. Reinforcing steel. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the 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 scope of protection of the present utility model.

[0027] Please see Figure 1-8This utility model provides an embodiment of a system of three rows of interconnected pipe piles arranged along a slope, including a buttress-type retaining wall 1, a first pipe pile 4, a second pipe pile 5, and a third pipe pile 6. The first pipe pile 4, the second pipe pile 5, and the third pipe pile 6 are arranged vertically side by side. The height of the first pipe pile 4 is equal to the height of the second pipe pile 5, which is greater than the height of the third pipe pile 6. An upper connecting beam 17 is horizontally welded to the top of the first pipe pile 4 and the second pipe pile 5. A lower connecting beam 13 is horizontally welded between the top of the third pipe pile 6 and the first pipe pile 4 and the second pipe pile 5. A buttress-type retaining wall 1 is vertically arranged on one side of the first pipe pile 4. A buffer slope 101 is provided at the bottom of one side of the buttress retaining wall 1, and the other side of the buttress retaining wall 1 has an inclined structure. The interior of the buttress retaining wall 1 is fixed with transverse reinforcing bars 102 and longitudinal reinforcing bars 103, which are set perpendicular to each other. The buttress retaining wall 1 protects the soil on the outside of the slope, while the buffer slope 101 can buffer the impact on the outside. The inner side of the buffer slope 101 is inclined, which can increase the inner bearing area and change the direction of the force, thereby reducing the impact force of the soil on the buttress retaining wall 1.

[0028] A first reinforced soil block 2 is laid between the buttress retaining wall 1 and the first pipe pile 4. A backfill soil layer 12 is laid in the middle of the first pipe pile 4, the second pipe pile 5, and the third pipe pile 6, and the first reinforced soil block 2 is laid on top of the backfill soil layer 12. A second reinforced soil block 18 is laid at the upper end of the first pipe pile 4, the second pipe pile 5, and the third pipe pile 6, and the second reinforced soil block 18 is located on top of the backfill soil layer 12.

[0029] The interior of both the first reinforced soil retaining block 2 and the second reinforced soil retaining block 18 is uniformly and horizontally laid with reinforcing steel bars 19. One end of the second reinforced soil retaining block 18 is built with a reinforced concrete wall 16. The upper surface of the second reinforced soil retaining block 18 is covered with a rammed clay waterproof layer 1801. A water interception ditch 1802 is horizontally opened on the upper surface of the second reinforced soil retaining block 18 near the reinforced concrete wall 16. This can prevent a large amount of water from the slope from seeping into the interior of the pipe pile structure, thereby affecting the structural strength of the slope soil.

[0030] A first pile plate wall 3 is vertically installed in the backfill soil layer 12 between the buttress retaining wall 1 and the first pipe pile 4. A second pile plate wall 7 is vertically installed in the backfill soil layer 12 at the location of the third pipe pile 6. A third pile plate wall 11 is vertically installed in the backfill soil layer 12 outside the third pipe pile 6. The three pile plate walls structurally strengthen the backfill soil layer 12 and the original soil layer below it.

[0031] At the locations of the first pipe pile 4 and the second pipe pile 5, the bottom of the backfill soil layer 12 is covered with a first C10 rubble concrete backfill sealing layer 8, and at the location of the third pipe pile 6, the bottom of the backfill soil layer 12 is covered with a second C10 rubble concrete backfill sealing layer 9, which increases the strength of the connection between the backfill soil layer 12 at the pipe pile and the original soil layer.

[0032] At the bottom of the backfill soil layer 12 outside the third pipe pile 6, there is a stepped interface layer 10. The interface layer 10 is covered with gravel to facilitate water infiltration and reduce soil and water loss in the backfill soil layer 12.

[0033] A sealing plate 14 is fixed between each adjacent first pipe pile 4. A filter layer 15 is laid inside the sealing plate 14. Drainage holes 1402 are evenly opened on the sealing plate 14, and the drainage holes 1402 are inclined to facilitate drainage. Expansion joints 1401 are vertically opened on the sealing plate 14.

[0034] Anchor holes 401 are evenly provided on the first pipe pile 4, and anchor rods 402 are installed at an angle in the anchor holes 401. The anchor rods 402 penetrate the second pipe pile 5 and the third pipe pile 6.

[0035] In this embodiment, the process involves first vertically constructing a first pile-plate wall 3, a second pile-plate wall 7, a third pile-plate wall 11, and a buttress-type retaining wall 1 on a slope. Then, first pipe piles 4, second pipe piles 5, and third pipe piles 6 are vertically and parallelly cast onto the slope. Connecting beams 17 are welded to the tops of the first and second pipe piles 4 and 5, and a lower connecting beam 13 is welded between the top of the third pipe pile 6 and the first and second pipe piles 5 to ensure the overall strength of the pipe piles. Next, the parallel first pipe piles 4 are fixedly sealed. A filter layer 15 is laid inside the sealing plate 14, and an anchor rod 402 is fixedly installed on the first pipe pile 4, so that the anchor rod 402 is fixed at an angle; finally, C10 rubble concrete is poured at the positions of the first pipe pile 4, the second pipe pile 5, and the third pipe pile 6 to backfill the sealing layer, and a backfill soil layer 12 is laid. A first reinforced soil block 2 is laid on the backfill soil layer 12 between the first pipe pile 4 and the buttress retaining wall 1, and a second reinforced soil block 18 is laid on the backfill soil layer 12 above the first pipe pile 4, the second pipe pile 5, and the third pipe pile 6.

[0036] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A method of installing three rows of interconnected pipe piles along a slope, characterized by: The structure includes a buttress retaining wall (1), a first pipe pile (4), a second pipe pile (5), and a third pipe pile (6). The first pipe pile (4), the second pipe pile (5), and the third pipe pile (6) are arranged vertically side by side. The height of the first pipe pile (4) is equal to the height of the second pipe pile (5), which is greater than the height of the third pipe pile (6). The tops of the first pipe pile (4) and the second pipe pile (5) are horizontally welded with an upper connecting beam (17). The top of the third pipe pile (6) is horizontally welded with a lower connecting beam (13) between it and the first pipe pile (4) and the second pipe pile (5). The first pipe pile (4) has... A buttress retaining wall (1) is vertically installed on one side. A first reinforced soil block (2) is laid between the buttress retaining wall (1) and the first pipe pile (4). A backfill layer (12) is laid in the middle of the first pipe pile (4), the second pipe pile (5), and the third pipe pile (6). The first reinforced soil block (2) is laid on top of the backfill layer (12). A second reinforced soil block (18) is laid at the upper end of the first pipe pile (4), the second pipe pile (5), and the third pipe pile (6). The second reinforced soil block (18) is located on top of the backfill layer (12).

2. The three rows of connected pipe piles according to claim 1, wherein: The bottom of one side of the buttress retaining wall (1) is provided with a buffer slope (101), and the other side of the buttress retaining wall (1) is inclined. The interior of the buttress retaining wall (1) is fixed with transverse reinforcing bars (102) and longitudinal reinforcing bars (103), and the transverse reinforcing bars (102) and longitudinal reinforcing bars (103) are arranged perpendicular to each other.

3. The three rows of connected pipe piles according to claim 1, wherein: The interior of both the first reinforced soil block (2) and the second reinforced soil block (18) is uniformly and horizontally laid with reinforcing steel bars (19).

4. The three rows of connected pipe piles according to claim 1, wherein: A first pile plate wall (3) is vertically installed in the backfill soil layer (12) between the buttress retaining wall (1) and the first pipe pile (4), a second pile plate wall (7) is vertically installed in the backfill soil layer (12) at the position of the third pipe pile (6), and a third pile plate wall (11) is vertically installed in the backfill soil layer (12) outside the third pipe pile (6).

5. The three rows of connected pipe piles of claim 1, wherein: The bottom of the backfill soil layer (12) at the location of the first pipe pile (4) and the second pipe pile (5) is covered with a first C10 rubble concrete backfill sealing layer (8), and the bottom of the backfill soil layer (12) at the location of the third pipe pile (6) is covered with a second C10 rubble concrete backfill sealing layer (9).

6. The three rows of connected pipe piles along the slope surface according to claim 1, characterized in that: The bottom of the backfill soil layer (12) outside the third pipe pile (6) is provided with a stepped interface layer (10), and the interface layer (10) is covered with crushed stone.

7. The three rows of connected pipe piles along the slope surface according to claim 1, characterized in that: Each adjacent first pipe pile (4) is fixed with a sealing plate (14), and a filter layer (15) is laid inside the sealing plate (14).

8. The three rows of connected pipe piles along the slope surface according to claim 7, characterized in that: The sealing plate (14) is provided with drainage holes (1402) evenly distributed, and the drainage holes (1402) are inclined. The sealing plate (14) is provided with expansion joints (1401) vertically.

9. The three rows of connected pipe piles along the slope surface according to claim 1, characterized in that: Anchor holes (401) are evenly provided on the first pipe pile (4), and anchor rods (402) are installed at an angle in the anchor holes (401). The anchor rods (402) penetrate the second pipe pile (5) and the third pipe pile (6).

10. The three rows of connected pipe piles along a slope surface according to claim 1, characterized in that: One end of the second reinforced soil block (18) is built with a reinforced concrete wall surface (16), the upper surface of the second reinforced soil block (18) is paved with a rammed clay waterproof layer (1801), and a water intercepting ditch (1802) is horizontally arranged at the position close to the reinforced concrete wall surface (16) on the upper surface of the second reinforced soil block (18).

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