Hole-cut bamboo composite lining support structure suitable for large-diameter pile foundation

Abstract

The present invention relates to the technical field of support structures, and proposes a hole-cut bamboo-type composite lining support structure suitable for large-diameter pile foundations, comprising an annular beam, a primary lining is arranged on the inner side of the annular beam, a waterproof layer is arranged on the inner side of the primary lining, a secondary lining is arranged on the inner side of the waterproof layer, a guide wall is arranged below the primary lining, the secondary lining and the waterproof layer, the large-diameter pile basic body is located below the guide wall, an anchor rod is arranged through the side of the primary lining, a first connecting block is slidably installed above the anchor rod, a second connecting block is slidably installed below the anchor rod, a first connecting rod is slidably installed inside the anchor rod, and a first pressure block is fixedly connected to the first connecting rod. The above technical solution solves the problem that the existing support structure cannot be constructed vertically, and cannot use the anchor rod to fix the lining support structure in the vertical direction while fixing the anchor rod itself in the length direction.

Description

Technical Field

[0001] The invention relates to the technical field of supporting structures, and in particular to a hole-cut bamboo-type composite lining supporting structure suitable for a large-diameter pile foundation. Background Art

[0002] With the rapid development of bridge technology in my country, the bridge foundation will merge "multiple small-diameter pile foundations" into "single large-diameter pile-column foundation", and the practice of canceling the cap is gradually being applied. This method is conducive to mechanized excavation and improves the efficiency of pile foundation construction. However, for a single large-diameter pile foundation on steep terrain, the conventional practice is to slope and excavate the steep terrain, level the site, and then carry out construction, which is labor-intensive and time-consuming, and the entire terrain is destroyed. It is labor-intensive and time-consuming, and it also destroys the overall environment. Therefore, it is worth studying how to excavate and support the hole without destroying the original surface to a large extent. The concept of bamboo-cutting hole opening in tunnel engineering can better solve this problem. The bamboo-cutting hole opening is named because it resembles bamboo cutting. It can play a role in modifying the surroundings in the landscape, and truly achieve the organic combination of the hole door and the surrounding ecological environment. However, the conventional bamboo-cutting hole opening in tunnel engineering is constructed horizontally, and it cannot be constructed vertically for the pile top construction of large-diameter pile foundation.

[0003] The invention patent with the publication number CN105756685B discloses a segment lining reinforced joint support structure, including a segment made of steel bars and concrete and an arch frame with the same inner diameter as the segment. The radial cross section of the arch frame is "C" shaped. The two sides of the segment are provided with mounting grooves. The arch frame is installed in the mounting grooves of two adjacent segments and is fixedly connected with the two adjacent segments. The outer side of the arch frame is open. The two adjacent segments of the segment lining reinforced joint support structure are connected and fixed by the arch frame, so that the overall rigidity of the joint is improved, while the misalignment of the joint is reduced and the number of segment hand holes is reduced; the mounting grooves on both sides of the segment form a stepped joint between the two adjacent segments, so that the waterproof performance of the joint is improved, which is particularly suitable for tunnel construction under high ground stress and large deformation geological conditions. Although the above-mentioned support structure can improve the waterproof performance, it cannot be constructed vertically, and it cannot use anchor rods to fix the lining support structure in the vertical direction while fixing the anchor rods in the length direction of the anchor rods themselves, and the stability is not high. Summary of the invention

[0004] The present invention proposes a hole-cut bamboo-type composite lining support structure suitable for large-diameter pile foundations, which solves the problems that the existing support structure cannot be constructed vertically, cannot use anchor rods to fix the lining support structure in the vertical direction, and cannot fix the anchor rods themselves in the length direction, resulting in low stability.

[0005] The technical solution of the present invention is as follows:

[0006] A hole-cut bamboo-type composite lining support structure suitable for large-diameter pile foundations comprises an annular beam, a primary lining is arranged on the inner side of the annular beam, a waterproof layer is arranged on the inner side of the primary lining, a secondary lining is arranged on the inner side of the waterproof layer, a guide wall is arranged below the primary lining, the secondary lining and the waterproof layer, a large-diameter pile basic body is located below the guide wall, an anchor rod is penetrated through the side of the primary lining, a first connecting block is slidably installed above the anchor rod, a second connecting block is slidably installed below the anchor rod, a first connecting rod is slidably installed in the anchor rod, a first pressure block is fixedly connected to the first connecting rod, a cutting assembly is installed on the anchor rod, and a traction steel rope is fixedly connected to the first connecting rod.

[0007] As a preferred solution of the present invention, the anchor rods are tubular structures, the anchor rods are evenly spaced on the side of the primary lining, and the inner diameter of the anchor rods is greater than the diameter of the first connecting rod.

[0008] As a preferred solution of the present invention, the first connecting block and the second connecting block are symmetrically distributed on the upper and lower sides of the anchor rod, the first connecting block and the second connecting block are evenly spaced on the anchor rod, and the first connecting block is provided with a first through hole.

[0009] As a preferred solution of the present invention, a stopper is fixedly connected to the first connecting rod, the diameter of the stopper is the same as the outer diameter of the anchor rod, and a second through hole is opened on the first connecting rod.

[0010] As a preferred solution of the present invention, the first pressing blocks are evenly spaced on the first connecting rods, the first connecting rods are evenly spaced on the first pressing blocks, and the positions and quantities of the first pressing blocks, the first connecting blocks and the second connecting blocks correspond one to one.

[0011] As a preferred solution of the present invention, a second pressure block is fixedly connected to the stop block, a mounting groove is provided on the anchor rod, the mounting groove, the first connecting block and the second connecting block are alternately distributed on the anchor rod, and the position of the second pressure block corresponds to the position of the mounting groove.

[0012] As a preferred solution of the present invention, a second connecting rod is slidably installed in one of the installation grooves, a third connecting rod is fixedly connected to the second connecting rod, support blocks are fixedly provided on both sides of the third connecting rod, and a movable groove and an extension groove are opened in the anchor rod.

[0013] As a preferred solution of the present invention, the second connecting rod, the third connecting rod and the support block are fixedly connected to form an integral structure, the second connecting rod, the third connecting rod and the support block are all made of rubber, and the support blocks are evenly spaced on both sides of the third connecting rod.

[0014] As a preferred solution of the present invention, the outer wall of the support block and the inner wall of the extension groove are in contact with each other, the extension grooves are evenly spaced on both sides of the movable groove, the inner wall of the movable groove and the outer walls of the second connecting rod and the third connecting rod are in contact with each other, a connecting groove connected to the movable groove is provided in the anchor rod, the connecting grooves are symmetrically distributed in the anchor rod on both sides of the movable groove, and a third pressure block located on both sides of the installation groove is slidably installed in the anchor rod.

[0015] As a preferred solution of the present invention, the cutting assembly includes a second connecting ring rotatably mounted on the anchor rod, the second connecting ring is fixedly connected to the first connecting ring, and cutting blocks are fixedly provided on both sides of the first connecting ring.

[0016] The working principle and beneficial effects of the present invention are:

[0017] 1. The use of bamboo-cut composite lining to construct large-diameter pile foundations can not only carry out vertical excavation, avoid the restrictions of ecological red lines, and minimize the damage to the original landform, which is in line with the green and environmentally friendly construction concept currently advocated by the country; it can also greatly reduce the amount of excavation work, without the need to level the site, and highly fit the original steep terrain for operations, reducing the workload while significantly reducing the cost; and saving construction time. With the reduction of the total amount of work and the use of large-scale mechanization, the construction period is shortened. This construction method creatively utilizes the conventional practice of bamboo-cut tunnel portal lining, and optimizes and improves it, reducing construction risks and construction costs, and solving the problem that the existing large-diameter pile foundation cannot be constructed vertically. The market prospects are very broad.

[0018] 2. The support structure is provided with equidistantly arranged transverse anchor rods, which can support the lining support structure in the vertical direction. The device can drive the first connecting rod to slide on the anchor rod by pulling the traction steel rope, and the first connecting block and the second connecting block on the anchor rod can be pushed upward by the first pressure block, thereby realizing the function of fixing in the horizontal direction, which solves the problem that the existing support structure cannot use the anchor rod to fix the lining support structure in the vertical direction and fix the anchor rod itself in the length direction at the same time. The device has the advantage of being more stable to use.

[0019] 3. By setting the first through hole, the second through hole and the third pressure block, the function of closing the end of the anchor rod is realized. When the traction steel rope is pulled, the first connecting rod will drive the block to move, and the second pressure block on the block can be stuck into the inside of the installation groove and abut against the second connecting rod. The second pressure block can squeeze the second connecting rod and the third connecting rod into the movable groove, and make the support block stuck into the inside of the extension groove. The air pressure in the movable groove and the extension groove increases, which increases the air pressure in the connecting groove. The third pressure block can press the second pressure block from both sides of the second pressure block, and the device can automatically press the second pressure block when pushing the first connecting block and the second connecting block outward, thereby realizing the closing function of the end of the anchor rod and facilitating subsequent grouting.

[0020] 4. Through the cutting assembly on the device, the device can pull the traction steel rope, and then pull the traction steel rope at multiple positions upward or downward, so that the traction steel rope abuts against the blade of the cutting knife to achieve the cutting function, thereby enhancing the convenience of the device when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the hole-cut bamboo-type composite lining support structure applicable to large-diameter pile foundations of the present invention;

[0023] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at center A;

[0024] Figure 3 It is a schematic diagram of the guide and primary lining connection structure of the present invention;

[0025] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0026] Figure 5 yes Figure 3 A magnified schematic diagram of the structure at C in the middle;

[0027] Figure 6 yes Figure 3 A magnified schematic diagram of the structure at D in the middle;

[0028] Figure 7 It is a schematic diagram of the connection structure between the annular beam and the primary lining of the present invention;

[0029] Figure 8 yes Figure 7 A magnified schematic diagram of the structure at E in the middle;

[0030] Fig. 9 yes Figure 7 A magnified schematic diagram of the structure at F in the middle;

[0031] Fig.10 It is a schematic diagram of the connection structure of the anchor rod and the traction steel rope of the present invention;

[0032] Fig.11 yes Fig.10 A magnified schematic diagram of the structure at G in the middle.

[0033] Figure numerals: 1. annular beam; 2. guide wall; 3. anchor rod; 4. primary lining; 5. secondary lining; 6. waterproof layer; 7. large diameter pile basic body; 8. first connecting block; 9. first through hole; 10. first connecting rod; 11. first pressure block; 12. stop block; 13. second pressure block; 14. second through hole; 15. movable groove; 16. extension groove; 17. connecting groove; 18. third pressure block; 19. installation groove; 20. second connecting rod; 21. third connecting rod; 22. support block; 23. cutting assembly; 2301. first connecting ring; 2302. second connecting ring; 2303. cutting block; 24. traction rope; 25. second connecting block. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figure 1-Figure 11 As shown, this embodiment proposes a hole-cut bamboo composite lining support structure suitable for large-diameter pile foundations, including an annular beam 1, a primary lining 4 is arranged on the inner side of the annular beam 1, a waterproof layer 6 is arranged on the inner side of the primary lining 4, a secondary lining 5 is arranged on the inner side of the waterproof layer 6, a guide wall 2 is arranged below the primary lining 4, the secondary lining 5 and the waterproof layer 6, a large-diameter pile basic body 7 is located below the guide wall 2, an anchor rod 3 is penetrated on the side of the primary lining 4, a first connecting block 8 is slidably installed above the anchor rod 3, and a second connecting block 2 is slidably installed below the anchor rod 3. 5. A first connecting rod 10 is slidably installed in the anchor rod 3, a first pressing block 11 is fixedly connected to the first connecting rod 10, a cutting assembly 23 is installed on the anchor rod 3, a traction steel rope 24 is fixedly connected to the first connecting rod 10, after the anchor rod 3 is installed, the traction steel rope 24 can be pulled so that the anchor rod 3 can push the first connecting block 8 and the second connecting block 25 to the outside of the anchor rod 3, so that the anchor rod 3 can be fixed in the length direction of itself, thereby ensuring the overall stability of the anchor rod 3, and the cutting assembly 23 is convenient for cutting the traction steel rope 24.

[0037] First, the site is cleaned to make it flat for subsequent construction; measurement and setting out are carried out to determine the location of the excavation point of the ring beam 1; the excavator excavates the stepped foundation trench of the ring beam 1; after the steel bar factory processes the steel bars of the ring beam 1, the crane hoists the steel bars into the foundation trench; concrete is poured until the structure of the ring beam 1 is formed, and the ring beam 1 is used to reinforce the hole. After the ring beam 1 is formed, the crane hoists the excavator into the pit and starts the vertical excavation of the foundation, with each layer excavated 1.5m deep; after each layer is excavated, the anchor rod 3 and the primary lining 4 are constructed. The construction of the anchor rod 3 part includes drilling, installation of the anchor rod 3 and grouting of the anchor rod 3, and the grouting uses cement slurry; the primary lining 4 structure is a steel mesh and + sprayed concrete. After the steel mesh is hung, the sprayer is used to spray concrete, and the spraying operation is carried out twice. After the construction reaches the top of the guide wall 2 (the top of the pile), the foundation trench of the guide wall 2 is excavated; the excavator is lifted out of the pit by a crane, and the personnel are lowered to manually tie the steel bars of the guide wall 2; the concrete of the guide wall 2 is poured and maintained by a car pump. The bottom waterproof layer 6 is constructed, and the waterproof layer 6 is constructed of geotextile + waterproof board; the steel bars are processed by the steel bar yard, transported to the site, and hoisted into the pit by a crane; the bottom steel bars are tied; the crane hoists the template into the pit to support the second lining 5; the second lining 5 concrete is poured from bottom to top until the construction of the second lining 5 is completed. Since then, the construction of the bamboo-cut composite lining at the hole has been completed, and the construction of the large-diameter pile foundation will be carried out next.

[0038] Example 2

[0039] like Figure 1-Figure 11 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes a hole-cut bamboo-type composite lining support structure suitable for large-diameter pile foundations.

[0040] In this embodiment, the anchor rod 3 is a tubular structure, and the anchor rods 3 are evenly spaced on the side of the primary lining 4 to ensure that the primary lining 4 can be stably supported. The inner diameter of the anchor rod 3 is larger than the diameter of the first connecting rod 10 to facilitate subsequent grouting. The first connecting rod 10 can slide while the anchor rod 3 does not affect subsequent grouting.

[0041] In this embodiment, the first connecting block 8 and the second connecting block 25 are symmetrically distributed on the upper and lower sides of the anchor rod 3. When the first connecting block 8 and the second connecting block 25 are extended, they can provide axial support to the anchor rod 3, thereby ensuring the overall stability of the support structure. The first connecting block 8 and the second connecting block 25 are evenly spaced on the anchor rod 3. A first through hole 9 is provided on the first connecting block 8. The first through hole 9 facilitates the seepage of cement slurry during subsequent grouting, thereby ensuring the stable support effect of the anchor rod 3.

[0042] In this embodiment, a block 12 is fixedly connected to the first connecting rod 10, and the diameter of the block 12 is the same as the outer diameter of the anchor rod 3. A second through hole 14 is opened on the first connecting rod 10, and the second through hole 14 can ensure that the first connecting rod 10 remains fixed in the anchor rod 3 after the mud solidifies. After the block 12 is fitted with the anchor rod 3, the end of the anchor rod 3 can be closed to ensure the subsequent grouting effect.

[0043] In this embodiment, the first pressure blocks 11 are evenly spaced on the first connecting rods 10, and the first connecting rods 10 are evenly spaced on the first pressure blocks 11. The positions and quantities of the first pressure blocks 11, the first connecting blocks 8, and the second connecting blocks 25 correspond one to one, so that each first pressure block 11 can act on the first connecting blocks 8 and the second connecting blocks 25 at the corresponding positions, so that the supporting structure can be anchored horizontally as a whole through the first connecting rods 10 later.

[0044] In this embodiment, a second pressure block 13 is fixedly connected to the stop block 12, and a mounting groove 19 is provided on the anchor rod 3. The mounting groove 19, the first connecting block 8 and the second connecting block 25 are alternately distributed on the anchor rod 3. The position of the second pressure block 13 corresponds to the position of the mounting groove 19. The second pressure block 13 can be docked with the mounting groove 19 later, so that the stop block 12 and the anchor rod 3 are accurately fitted, and the normal extension and contraction of the first connecting block 8 and the second connecting block 25 are not affected.

[0045] In this embodiment, a second connecting rod 20 is slidably installed in one of the installation grooves 19, a third connecting rod 21 is fixedly connected to the second connecting rod 20, support blocks 22 are fixedly provided on both sides of the third connecting rod 21, and a movable groove 15 and an extension groove 16 are opened in the anchor rod 3. The support block 22 can be inserted into the extension groove 16 at the corresponding position, so that the second connecting rod 20 and the third connecting rod 21 can only move in one direction, so as to maintain stability when the end of the anchor rod 3 is closed later.

[0046] In this embodiment, the second connecting rod 20, the third connecting rod 21 and the support block 22 are fixedly connected to form an integral structure. The second connecting rod 20, the third connecting rod 21 and the support block 22 are all made of rubber. The support blocks 22 are evenly spaced on both sides of the third connecting rod 21. The rubber support blocks 22 can be deformed and remain in a clamped state after being compressed. The evenly spaced support blocks 22 facilitate the subsequent keeping of multiple positions of the third connecting rod 21 in a clamped state at the same time.

[0047] In this embodiment, the outer wall of the support block 22 fits with the inner wall of the extension groove 16, and the extension grooves 16 are evenly spaced on both sides of the movable groove 15. The inner wall of the movable groove 15 fits with the outer walls of the second connecting rod 20 and the third connecting rod 21. A connecting groove 17 connected to the movable groove 15 is provided in the anchor rod 3. The connecting grooves 17 are symmetrically distributed in the anchor rod 3 on both sides of the movable groove 15. A third pressing block 18 located on both sides of the installation groove 19 is slidably installed in the anchor rod 3. When the third connecting rod 21 slides in the movable groove 15, the air pressure in the movable groove 15 will increase, thereby increasing the air pressure in the connecting groove 17. The increase in the air pressure in the connecting groove 17 will cause the third pressing block 18 to move toward the central axis direction of the anchor rod 3, so as to realize the subsequent tightening work after the end of the anchor rod 3 is sealed.

[0048] In this embodiment, the cutting assembly 23 includes a second connecting ring 2302 rotatably mounted on the anchor rod 3, and the first connecting ring 2301 is fixedly connected to the second connecting ring 2302. Cutting blocks 2303 are fixedly arranged on both sides of the first connecting ring 2301. The angle of the first connecting ring 2301 can be adjusted by the second connecting ring 2302, and the position of the cutting block 2303 can be changed to realize the cutting function.

[0049] Specifically, the present invention is a hole-cut bamboo composite lining support structure suitable for large-diameter pile foundations, such as Figure 1 , Figure 3 and Fig.10 As shown, first clean the site to make it flat for subsequent construction; measure and stake out to determine the location of the excavation point of the ring beam 1; the excavator excavates the stepped foundation trench of the ring beam 1; after the steel bar factory processes the steel bars of the ring beam 1, the crane hoists the steel bars into the foundation trench; pour concrete until the structure of the ring beam 1 is formed, and the ring beam 1 is used to reinforce the hole. After the ring beam 1 is formed, the crane hoists the excavator into the pit and starts the vertical excavation of the foundation, with each layer excavated 1.5m deep; after each layer is excavated, the anchor rod 3 and the primary lining 4 are constructed. The construction of the anchor rod 3 part includes drilling, installation of the anchor rod 3 and grouting of the anchor rod 3, and the grouting uses cement slurry; the primary lining 4 structure is a steel mesh and + shotcrete. After the steel mesh is hung, the concrete is sprayed by a sprayer, and the spraying operation is carried out twice. After the construction reaches the top of the guide wall 2 (the top of the pile), the foundation trench of the guide wall 2 is excavated; the excavator is lifted out of the pit by a crane, and the personnel are lowered to manually tie the steel bars of the guide wall 2; the concrete of the guide wall 2 is poured and maintained by a car pump. The bottom waterproof layer 6 is constructed, and the waterproof layer 6 is constructed of geotextile + waterproof board; the steel bars are processed by the steel bar yard, transported to the site, and hoisted into the pit by a crane; the bottom steel bars are tied; the crane hoists the template into the pit to support the second lining 5; the second lining 5 concrete is poured from bottom to top until the construction of the second lining 5 is completed. Since then, the construction of the bamboo-cut composite lining at the hole has been completed, and the construction of the large-diameter pile foundation will be carried out next.

[0050] like Figure 1-Figure 3As shown, before grouting, the anchor rod 3 drives the first connecting rod 10, the first pressing block 11, the stopper 12 and the second pressing block 13 to slide by pulling the traction steel rope 24. The truncated cone structure of the first pressing block 11 can prop up the first connecting block 8 and the second connecting block 25 to the outside of the anchor rod 3, so that the anchor rod 3 can not only realize the longitudinal anchoring function, but also realize the transverse anchoring in the length direction of the anchor rod 3. After the first connecting rod 10 in the anchor rod 3 moves to a suitable position, the stopper 12 will abut against the end of the anchor rod 3, and the second pressing block 13 on the stopper 12 will move to the inside of the installation groove 19, and the second pressing block 13 will push the second connecting rod 20 (as shown in FIG. Figure 4 As shown in the figure), the third connecting rod 21 is driven to slide in the moving groove 15, and the air pressure in the moving groove 15 will increase, thereby increasing the air pressure in the connecting groove 17. The increase in the air pressure in the connecting groove 17 will cause the third pressing block 18 to move toward the central axis of the anchor rod 3, thereby realizing the clamping function on both sides of the second pressing block 13. During the sliding process of the third connecting rod 21, the support block 22 made of rubber material will be engaged once each time it moves to an extension groove 16, so as to realize the subsequent compression and fixing work after the sealing of the end of the anchor rod 3. After the fixing is completed, the angle of the first connecting ring 2301 is adjusted by the second connecting ring 2302, and the position of the cutting block 2303 is changed, so that the traction steel rope 24 can be against the cutting block 2303 when it is pulled to the corresponding position, thereby realizing the cutting function. When the support structure is grouting, the mud will extend into the soil layer through the first through hole 9 to achieve a better anchoring effect. The mud in the second through hole 14 can keep the first connecting rod 10 fixed after solidification.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bamboo-cut composite lining support structure for a large-diameter pile foundation, comprising a ring beam (1), characterized in that: A primary lining (4) is arranged on the inner side of the annular beam (1), a waterproof layer (6) is arranged on the inner side of the primary lining (4), a secondary lining (5) is arranged on the inner side of the waterproof layer (6), a guide wall (2) is arranged below the primary lining (4), the secondary lining (5) and the waterproof layer (6), a large-diameter pile basic body (7) is located below the guide wall (2), an anchor rod (3) is arranged through the side of the primary lining (4), a first connecting block (8) is slidably mounted above the anchor rod (3), a second connecting block (25) is slidably mounted below the anchor rod (3), a first connecting rod (10) is slidably mounted inside the anchor rod (3), a first pressing block (11) is fixedly connected to the first connecting rod (10), a cutting assembly (23) is mounted on the anchor rod (3), and a traction steel rope (24) is fixedly connected to the first connecting rod (10); A stopper (12) is fixedly connected to the first connecting rod (10), the diameter of the stopper (12) being the same as the outer diameter of the anchor rod (3), and a second through hole (14) is formed on the first connecting rod (10); The stopper (12) is fixedly connected to a second pressing block (13); a mounting groove (19) is provided on the anchor rod (3); the mounting groove (19), the first connecting block (8) and the second connecting block (25) are alternately distributed on the anchor rod (3); and the position of the second pressing block (13) corresponds to the position of the mounting groove (19); A second connecting rod (20) is slidably mounted in one of the mounting grooves (19), a third connecting rod (21) is fixedly connected to the second connecting rod (20), support blocks (22) are fixedly arranged on both sides of the third connecting rod (21), and a moving groove (15) and an extension groove (16) are provided in the anchor rod (3); The second connecting rod (20), the third connecting rod (21) and the support block (22) are fixedly connected to form an integral structure; the second connecting rod (20), the third connecting rod (21) and the support block (22) are all made of rubber; and the support blocks (22) are evenly spaced on both sides of the third connecting rod (21); The outer wall of the support block (22) fits with the inner wall of the extension groove (16), the extension grooves (16) are evenly spaced on both sides of the movable groove (15), the inner wall of the movable groove (15) fits with the outer walls of the second connecting rod (20) and the third connecting rod (21), a connecting groove (17) connected to the movable groove (15) is provided in the anchor rod (3), the connecting grooves (17) are symmetrically distributed in the anchor rod (3) on both sides of the movable groove (15), and a third pressing block (18) located on both sides of the mounting groove (19) is slidably installed in the anchor rod (3).

2. The hole-cut bamboo composite lining support structure suitable for large-diameter pile foundation according to claim 1 is characterized in that: The anchor rods (3) are tubular structures, the anchor rods (3) are distributed at equal intervals on the side of the primary lining (4), and the inner diameter of the anchor rods (3) is greater than the diameter of the first connecting rod (10).

3. The hole-cut bamboo composite lining support structure suitable for large-diameter pile foundation according to claim 1 is characterized in that: The first connection block (8) and the second connection block (25) are symmetrically distributed on the upper and lower sides of the anchor rod (3); the first connection block (8) and the second connection block (25) are evenly spaced on the anchor rod (3); and the first connection block (8) is provided with a first through hole (9).

4. The hole-cut bamboo composite lining support structure suitable for large-diameter pile foundation according to claim 3 is characterized in that: The first pressing blocks (11) are distributed at equal intervals on the first connecting rod (10), the first connecting rod (10) are distributed at equal intervals on the first pressing blocks (11), and the positions and quantities of the first pressing blocks (11), the first connecting blocks (8) and the second connecting blocks (25) are all in one-to-one correspondence.

5. The hole-cut bamboo composite lining support structure suitable for large-diameter pile foundation according to claim 1, characterized in that: The cutting assembly (23) comprises a second connecting ring (2302) rotatably mounted on the anchor rod (3), the second connecting ring (2302) being fixedly connected to the first connecting ring (2301), and cutting blocks (2303) being fixedly arranged on both sides of the first connecting ring (2301).

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