stiff composite pile

Abstract

The application discloses a stiff composite pile, and relates to the technical field of composite piles, which comprises prestressed pipe piles and concrete piles, a plurality of first through holes are formed in the side wall of the prestressed pipe piles, an extension pipe is arranged in each first through hole, a moving block is slidably connected in the extension pipe, and a limiting rod is arranged at the end of the moving block away from the axis line of the prestressed pipe pile; a driving assembly for driving the plurality of moving blocks to move outwards from the first through holes is arranged in the prestressed pipe pile, and a first reset piece for resetting the moving blocks is arranged in the extension pipe. The application can improve the connecting strength between the pile foundation and the inner wall of the pile pit.

Description

Technical Field

[0001] This application relates to the technical field of composite piles, and in particular to a stiffened composite pile. Background Technology

[0002] Currently, reinforced composite piles are a type of composite carrier, typically a combination of concrete piles and prestressed pipe piles, often used for soft foundations such as silt, cohesive soil, silt, sand, and artificial fill.

[0003] In related technologies, the general procedure is to first excavate a pile pit, then pre-embed prestressed pipe piles in the pile pit, and then pour concrete to form a layer of concrete piles on the outside of the prestressed pipe piles.

[0004] However, simply attaching prestressed pipe piles to concrete piles can easily result in low connection strength between the pile foundation and the inner wall of the pile pit, which can easily affect the bearing capacity of the pile foundation. Summary of the Invention

[0005] This application provides a reinforced composite pile that can improve the connection strength between the pile foundation and the inner wall of the pile pit, using the following technical solution:

[0006] A type of rigid composite pile includes a prestressed pipe pile and a concrete pile. The sidewall of the prestressed pipe pile has multiple first through holes. An extension pipe is installed in each first through hole. A movable block is slidably connected in the extension pipe. A limit rod is installed at the end of the movable block away from the axis of the prestressed pipe pile. A driving assembly for driving the multiple movable blocks to move out of the first through holes is installed in the prestressed pipe pile. A first reset member for resetting the movable blocks is installed in the extension pipe.

[0007] Preferably, the driving assembly includes a bearing tube that slides vertically to the inner wall of the prestressed concrete pipe pile. A plurality of supporting springs are fixed to the bottom of the bearing tube. The end of each supporting spring away from the bearing tube is fixed to the bottom wall of the prestressed concrete pipe pile. A plurality of driving blocks are sequentially installed on the outer side wall of the bearing tube along its circumference. The plurality of driving blocks are arranged in a one-to-one correspondence with a plurality of moving blocks. A first inclined surface is provided at the end of the driving block near the moving block, and a second inclined surface is provided at the end of the moving block near the driving block. The first inclined surface and the second inclined surface are matched one-to-one.

[0008] Preferably, the inner wall of the extension tube is provided with a first sliding groove, and the first reset member includes a first reset block slidably connected to the first sliding groove and a first spring fixed to one side of the first reset block; the end of the first spring away from the first reset block is fixed to the inner wall of one end of the first sliding groove.

[0009] Preferably, the top wall of the first through hole has a second through hole, and an observation rod is slidably connected in the second through hole. The side wall of the extension tube has a third through hole for the bottom of the observation rod to pass through, and the side wall of the moving block has a slot for the bottom of the observation rod to be inserted. The bottom of the observation rod has a third inclined surface, which matches the outer side wall of the extension tube. When the bottom of the observation rod is inserted into the slot, the top of the observation rod is flush with the top of the prestressed pipe pile. A second reset member for resetting the observation rod is installed in the second through hole.

[0010] Preferably, the top of the observation rod has a threaded hole.

[0011] Preferably, the inner wall of the second through hole is provided with a second sliding groove, and the second reset member includes a second reset block slidably connected to the second sliding groove and a second spring fixed to one side of the second reset block; the end of the second spring away from the second reset block is fixed to the inner wall of one end of the second sliding groove.

[0012] Preferably, the bottom of the prestressed pipe pile is equipped with a limiting mechanism for limiting the bearing pipe.

[0013] Preferably, the limiting mechanism includes a first vertical block fixed to the bottom of the prestressed concrete pipe pile, a third sliding groove on one side of the first vertical block, and a limiting block slidably connected in the third sliding groove; a second vertical block fixed to the bottom of the bearing pipe, a limiting groove on one side of the second vertical block for inserting one end of the limiting block, a fourth inclined surface on the end of the limiting block near the limiting groove, the fourth inclined surface matching the side of the second vertical block near the first vertical block; a limiting spring fixed to the end of the limiting block away from the limiting groove, and the end of the limiting spring away from the limiting block fixed to the bottom of the third sliding groove.

[0014] Preferably, the limiting rod includes a rotating part abutting against one end of the moving block, a spiral block rotatably connected to the end of the rotating part away from the moving block, and a drill bit fixed to the end of the spiral block away from the rotating part; the inner wall of the extension tube is provided with a spiral groove, and the spiral block matches the spiral groove.

[0015] Preferably, a horizontal rod is fixedly connected above the extension tube to the outer wall of the prestressed pipe pile, and two inclined plates are rotatably connected to the horizontal rod. A horizontal plate is fixedly connected below the horizontal rod to the outer wall of the prestressed pipe pile. A buffer spring is fixedly connected to the side of the inclined plate near the horizontal plate, and the end of the buffer spring away from the inclined plate is fixedly connected to the top of the horizontal plate.

[0016] In summary, this application has the following beneficial effects:

[0017] 1. First, the moving block is moved outward from the first through hole by the driving component. The movement of the moving block outward from the first through hole drives the limiting rod to move outward from the first through hole. In this way, the limiting rod can be inserted into the soil of the inner wall of the pile pit, thereby improving the connection strength between the pile foundation and the inner wall of the pile pit.

[0018] 2. After the prestressed concrete pipe pile is installed, it needs to be filled with stones or other filler materials. When filling the prestressed concrete pipe pile with stones or other filler materials, the stones or other filler materials will fall into the bearing pipe. Then the bearing pipe moves downward, which drives the driving block to move downward. At this time, the driving block drives the moving block to move out of the first through hole under the action of the first inclined surface and the second inclined surface. The driving component is set to facilitate the movement of the moving block out of the first through hole.

[0019] 3. When the extension tube is inserted into the first through hole, the extension tube drives the observation rod to move upward under the action of the third inclined plane; after the extension tube is inserted into the first through hole, the bottom of the observation rod is inserted into the third through hole and abuts against the side wall of the moving block; then, under the action of the driving block, the moving block continues to move. When the moving block moves to align the observation rod with the slot, the observation rod is inserted into the slot under the action of the second reset member, and then the top of the observation rod is flush with the top of the prestressed pipe pile. This makes it easy for the operator to judge whether the moving block has moved. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of the limiting rod in Embodiment 2 of this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Prestressed concrete pipe pile; 11. First through hole; 12. Settling trench; 13. Second through hole; 14. Observation rod; 141. Threaded hole; 142. Third inclined plane; 15. Second chute; 2. Concrete pile; 3. Extension pipe; 31. Connecting block; 32. Moving block; 321. Slot; 33. Limiting rod; 331. Rotating part; 332. Spiral block; 333. Drill bit; 34. First chute; 35. Third through hole; 36. Spiral groove; 4. Drive assembly; 41. Bearing pipe; 42. Support spring; 4 3. Drive block; 44. First inclined plane; 45. Second inclined plane; 5. First reset component; 51. First reset block; 52. First spring; 6. Second reset component; 61. Second reset block; 62. Second spring; 7. Limiting mechanism; 71. First vertical block; 711. Third slide groove; 712. Fourth slide groove; 72. Limiting block; 721. Fourth inclined plane; 73. Second vertical block; 731. Limiting groove; 74. Limiting spring; 75. Limiting ring; 8. Horizontal rod; 81. Inclined plate; 82. Horizontal plate; 83. Buffer spring. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0026] Example 1: This application discloses a stiffened composite pile, including a prestressed pipe pile 1 and a concrete pile 2.

[0027] The prestressed pipe pile 1 has multiple first through holes 11 on its side wall, which are arranged radially along the prestressed pipe pile 1. An extension pipe 3 is installed in each first through hole 11, and a connecting block 31 is fixedly connected to the bottom of the extension pipe 3. A groove 12 is opened on the outer side wall of the prestressed pipe pile 1, and the connecting block 31 is bolted to the groove 12. A moving block 32 is slidably connected in the extension pipe 3 along the radial direction of the prestressed pipe pile 1. A limit rod 33 is installed at the end of the moving block 32 away from the axis of the prestressed pipe pile 1. A driving assembly 4 for driving the multiple moving blocks 32 to move out of the first through hole 11 is installed in the prestressed pipe pile 1, and a first reset member 5 for resetting the moving blocks 32 is installed in the extension pipe 3. First, the moving block 32 is moved outward from the first through hole 11 by the driving component 4. The moving block 32 moves outward from the first through hole 11, which drives the limiting rod 33 to move outward from the first through hole 11. In this way, the limiting rod 33 can be inserted into the soil of the inner wall of the pile pit, thereby improving the connection strength between the pile foundation and the inner wall of the pile pit.

[0028] The drive assembly 4 includes a bearing pipe 41 that slides vertically along the inner wall of the prestressed pipe pile 1. The opening of the bearing pipe 41 is funnel-shaped. Multiple support springs 42 are fixedly connected to the bottom of the bearing pipe 41. The support springs 42 are vertically arranged. The end of each support spring 42 away from the bearing pipe 41 is fixedly connected to the bottom wall of the prestressed pipe pile 1. Multiple drive blocks 43 are installed sequentially along the circumference of the outer wall of the bearing pipe 41. The multiple drive blocks 43 are arranged in a one-to-one correspondence with multiple moving blocks 32. The end of the drive block 43 near the moving block 32 is provided with a first inclined surface 44, and the end of the moving block 32 near the drive block 43 is provided with a second inclined surface 45. The first inclined surface 44 and the second inclined surface 45 are matched one-to-one. After the prestressed pipe pile 1 is installed, it is necessary to fill the prestressed pipe pile 1 with stones or other fillers. When filling the prestressed pipe pile 1 with stones or other fillers, the stones or other fillers will fall into the bearing pipe 41. Then the bearing pipe 41 moves downward, and the downward movement of the bearing pipe 41 drives the driving block 43 to move downward. At this time, the driving block 43 drives the moving block 32 to move out of the first through hole 11 under the action of the first inclined surface 44 and the second inclined surface 45. The driving component 4 is provided to facilitate the movement of the moving block 32 out of the first through hole 11.

[0029] The inner wall of the extension pipe 3 is provided with a first sliding groove 34, which is arranged radially along the prestressed pipe pile 1. The first reset component 5 includes a first reset block 51 that is slidably connected to the first sliding groove 34 along the radial direction of the prestressed pipe pile 1, and a first spring 52 that is fixed to the side of the first reset block 51 away from the bearing pipe 41. The first spring 52 is arranged radially along the prestressed pipe pile 1, and the end of the first spring 52 away from the first reset block 51 is fixed to the inner wall of the end of the first sliding groove 34 away from the bearing pipe 41. The movement of the moving block 32 drives the first reset block 51 to move, and the movement of the first reset block 51 presses against the first spring 52. When the driving block 43 separates from the moving block 32, the first reset block 51 can drive the moving block 32 to reset under the action of the first spring 52. The first reset component 5 is provided to facilitate the reset of the moving block 32.

[0030] The top wall of the first through hole 11 has a second through hole 13, and an observation rod 14 is vertically slidably connected inside the second through hole 13. The side wall of the extension tube 3 has a third through hole 35 for the bottom of the observation rod 14 to pass through. The side wall of the moving block 32 has a slot 321 for the bottom of the observation rod 14 to be inserted. The top of the observation rod 14 has a threaded hole 141, and the bottom of the observation rod 14 has a third inclined surface 142, which matches the outer side wall of the extension tube 3. When the bottom of the observation rod 14 is inserted into the slot 321, the top of the observation rod 14 is flush with the top of the prestressed pipe pile 1. A second reset member 6 for resetting the observation rod 14 is installed in the second through hole 13. When the extension tube 3 is installed in the first through hole 11, the extension tube 3 drives the observation rod 14 to move upward under the action of the third inclined surface 142. After the extension tube 3 is installed in the first through hole 11, the bottom of the observation rod 14 is inserted into the third through hole 35 and abuts against the side wall of the moving block 32. Then, under the action of the driving block 43, the moving block 32 continues to move. When the moving block 32 moves to align the observation rod 14 with the slot 321, the observation rod 14 is inserted into the slot 321 under the action of the second reset member 6. Then, the top of the observation rod 14 is flush with the top of the prestressed pipe pile 1, which makes it easy for the operator to judge whether the moving block 32 has moved.

[0031] The inner wall of the second through hole 13 is provided with a second sliding groove 15, which extends vertically. The second reset component 6 includes a second reset block 61 that slides vertically and is connected to the second sliding groove 15, and a second spring 62 that is fixed to the top of the second reset block 61. The second spring 62 is vertically arranged, and one end of the second spring 62 away from the second reset block 61 is fixed to the inner side of the top of the second sliding groove 15. When the extension tube 3 is inserted into the first through hole 11, the side wall of the extension tube 3 drives the observation rod 14 to move upward under the action of the third inclined surface 142. The upward movement of the observation rod 14 drives the second reset block 61 to move upward, and the upward movement of the second reset block 61 presses against the second spring 62. When the extension tube 3 is installed in the first through hole 11, the observation rod 14 is inserted into the third through hole 35 under the action of the second spring 62 and abuts against the side wall of the moving block 32. In summary, the second reset component 6 facilitates the reset of the observation rod 14.

[0032] A limiting mechanism 7 for limiting the bearing pipe 41 is installed at the bottom of the prestressed pipe pile 1. The limiting mechanism 7 includes a first vertical block 71 vertically fixed to the bottom of the prestressed pipe pile 1. A third sliding groove 711 is opened on one side of the first vertical block 711. The third sliding groove 711 is arranged radially along the prestressed pipe pile 1. A limiting block 72 is slidably connected in the third sliding groove 711 along the radial direction of the prestressed pipe pile 1. A second vertical block 73 is fixed to the bottom of the bearing pipe 41. A limiting groove 731 is opened on one side of the second vertical block 73 for one end of the limiting block 72 to be inserted. The limiting block 72 has a fourth inclined surface 721 at one end near the limiting groove 731, which matches the side of the second vertical block 73 near the first vertical block 71; the limiting block 72 is fixedly connected to a limiting spring 74 at one end away from the limiting groove 731, which is arranged radially along the prestressed pipe pile 1, and the limiting spring 74 is fixedly connected to the bottom of the third sliding groove 711 at one end away from the limiting block 72; the limiting ring 75 is fixedly connected to the side wall of the limiting block 72, and the side wall of the third sliding groove 711 is provided with a fourth sliding groove 712 for the limiting ring 75 to slide. When the bearing pipe 41 moves downward under the weight of stones, it will drive the second vertical block 73 to move. Then, under the action of the fourth inclined surface 721, the second vertical block 73 drives the limiting block 72 to move into the third sliding groove 711. The movement of the limiting block 72 presses against the limiting spring 74. When the second vertical block 73 moves downward to make the limiting block 72 align with the limiting groove 731, the limiting block 72 is inserted into the limiting groove 731 under the action of the limiting spring 74, thereby limiting the bearing pipe 41. The limiting mechanism 7 is provided to limit the bearing pipe 41, thereby reducing the possibility of the bearing pipe 41 separating from the prestressed pipe pile 1.

[0033] Working principle: First, stones or other filler materials are filled into the prestressed pipe pile 1. When filling the prestressed pipe pile 1 with stones or other filler materials, the stones or other filler materials will fall into the bearing pipe 41. Then the bearing pipe 41 moves downward. The downward movement of the bearing pipe 41 drives the driving block 43 to move downward. At this time, under the action of the first inclined surface 44 and the second inclined surface 45, the driving block 43 drives the moving block 32 to move out of the first through hole 11. The moving block 32 moves out of the first through hole 11, which drives the limiting rod 33 to move out of the first through hole 11. In this way, the limiting rod 33 can be inserted into the soil of the inner wall of the pile pit, thereby improving the connection strength between the pile foundation and the inner wall of the pile pit.

[0034] Example 2: A rigid composite pile, the main difference from Example 1 is that: the limiting rod 33 includes a rotating part 331 abutting against one end of the moving block 32, a spiral block 332 rotatably connected to the end of the rotating part 331 away from the moving block 32, and a drill bit 333 fixed to the end of the spiral block 332 away from the rotating part 331; the inner wall of the extension tube 3 is provided with a spiral groove 36, and the spiral block 332 matches the spiral groove 36. The moving block 32 moves outward from the first through hole 11, driving the rotating part 331 to move. The movement of the rotating part 331 drives the spiral block 332 to move. At this time, the spiral block 332 rotates under the action of the spiral groove 36. The rotation of the spiral block 332 drives the drill bit 333 to rotate, thereby facilitating the drilling of the end of the limiting rod 33 away from the moving block 32 into the soil of the inner wall of the pile pit.

[0035] A horizontal bar 8 is fixedly connected to the outer wall of the prestressed concrete pipe pile 1 above the extension pipe 3. Two inclined plates 81 are rotatably connected to the horizontal bar 8. A horizontal plate 82 is fixedly connected to the outer wall of the prestressed concrete pipe pile 1 below the horizontal bar 8. A buffer spring 83 is fixedly connected to the side of the inclined plate 81 near the horizontal plate 82. The end of the buffer spring 83 away from the inclined plate 81 is fixed to the top of the horizontal plate 82. The inclined plate 81 and the buffer spring 83 are designed to protect the extension pipe 3 and reduce the possibility of the extension pipe 3 being deformed by the concrete when it is poured into the pile pit.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reinforced composite pile, comprising a prestressed pipe pile (1) and a concrete pile (2), characterized in that: The prestressed pipe pile (1) has multiple first through holes (11) on its side wall. Each first through hole (11) is equipped with an extension pipe (3). A moving block (32) is slidably connected inside the extension pipe (3). A limit rod (33) is installed at one end of the moving block (32) away from the axis of the prestressed pipe pile (1). A driving assembly (4) for driving multiple moving blocks (32) to move out of the first through hole (11) is installed inside the prestressed pipe pile (1). A first reset member (5) for resetting the moving block (32) is installed inside the extension pipe (3). The top wall of the first through hole (11) is provided with a second through hole (13), and an observation rod (14) is slidably connected in the second through hole (13). The side wall of the extension tube (3) is provided with a third through hole (35) for the bottom of the observation rod (14) to pass through. The side wall of the moving block (32) is provided with a slot (321) for the bottom of the observation rod (14) to be inserted. The bottom of the observation rod (14) is provided with a third inclined surface (142), which matches the outer side wall of the extension tube (3). When the bottom of the observation rod (14) is inserted into the slot (321), the top of the observation rod (14) is flush with the top of the prestressed pipe pile (1). A second reset member (6) for resetting the observation rod (14) is installed in the second through hole (13). The inner wall of the second through hole (13) is provided with a second sliding groove (15). The second reset member (6) includes a second reset block (61) slidably connected to the second sliding groove (15) and a second spring (62) fixed to one side of the second reset block (61). The end of the second spring (62) away from the second reset block (61) is fixed to the inner wall of one end of the second sliding groove (15).

2. The rigid composite pile according to claim 1, characterized in that: The drive assembly (4) includes a bearing pipe (41) that slides vertically to the inner wall of the prestressed pipe pile (1). A plurality of support springs (42) are fixed to the bottom of the bearing pipe (41). The end of each support spring (42) away from the bearing pipe (41) is fixed to the bottom wall of the prestressed pipe pile (1). A plurality of drive blocks (43) are installed sequentially along the circumference of the outer side wall of the bearing pipe (41). The plurality of drive blocks (43) are arranged in a one-to-one correspondence with a plurality of moving blocks (32). A first inclined surface (44) is provided at the end of the drive block (43) near the moving block (32). A second inclined surface (45) is provided at the end of the moving block (32) near the drive block (43). The first inclined surface (44) and the second inclined surface (45) are matched one-to-one.

3. The rigid composite pile according to claim 1, characterized in that: The inner wall of the extension tube (3) is provided with a first sliding groove (34). The first reset member (5) includes a first reset block (51) slidably connected to the first sliding groove (34) and a first spring (52) fixed to one side of the first reset block (51). The end of the first spring (52) away from the first reset block (51) is fixed to the inner wall of one end of the first sliding groove (34).

4. The rigid composite pile according to claim 1, characterized in that: The top of the observation rod (14) is provided with a threaded hole (141).

5. The rigid composite pile according to claim 2, characterized in that: The bottom of the prestressed pipe pile (1) is equipped with a limiting mechanism (7) for limiting the bearing pipe (41).

6. The rigid composite pile according to claim 5, characterized in that: The limiting mechanism (7) includes a first vertical block (71) fixed to the bottom of the prestressed pipe pile (1), a third sliding groove (711) is provided on one side of the first vertical block (71), and a limiting block (72) is slidably connected in the third sliding groove (711); a second vertical block (73) is fixed to the bottom of the bearing pipe (41), a limiting groove (731) is provided on one side of the second vertical block (73) for one end of the limiting block (72) to be inserted, a fourth inclined surface (721) is provided on one end of the limiting block (72) near the limiting groove (731), and the fourth inclined surface (721) matches the side of the second vertical block (73) near the first vertical block (71); a limiting spring (74) is fixed to one end of the limiting block (72) away from the limiting groove (731), and the end of the limiting spring (74) away from the limiting block (72) is fixed to the bottom of the third sliding groove (711).

7. The rigid composite pile according to claim 1, characterized in that: The limiting rod (33) includes a rotating part (331) abutting against one end of the moving block (32), a spiral block (332) rotatably connected to the end of the rotating part (331) away from the moving block (32), and a drill bit (333) fixed to the end of the spiral block (332) away from the rotating part (331); the inner wall of the extension tube (3) is provided with a spiral groove (36), and the spiral block (332) matches the spiral groove (36).

8. The rigid composite pile according to claim 7, characterized in that: A horizontal rod (8) is fixedly connected above the extension pipe (3) to the outer wall of the prestressed pipe pile (1). Two inclined plates (81) are rotatably connected to the horizontal rod (8). A horizontal plate (82) is fixedly connected below the horizontal rod (8) to the outer wall of the prestressed pipe pile (1). A buffer spring (83) is fixedly connected to the side of the inclined plate (81) near the horizontal plate (82). The end of the buffer spring (83) away from the inclined plate (81) is fixedly connected to the top of the horizontal plate (82).

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