High pressure jet grouting pile

Abstract

The application discloses a high-pressure rotary jet grouting pile, which comprises a pile body, a plurality of groups of fixing assemblies are arranged on the side wall of the pile body, the fixing assembly comprises a ground-anchoring rod which is slidably connected to the pile body, a trigger assembly is arranged at the bottom of the pile body, the trigger assembly is in transmission connection with the plurality of groups of ground-anchoring rods through a transmission assembly, when the pile body is installed in a base, the trigger assembly is grounded, the plurality of groups of ground-anchoring rods are synchronously slid through the trigger assembly, so that the ground-anchoring rods are inserted into the base, and the pile body is fixed. When the pile body is installed in the base, the trigger assembly is grounded, the plurality of groups of ground-anchoring rods are synchronously slid through the trigger assembly, so that the ground-anchoring rods are inserted into the base, and the pile body is fixed. Therefore, when the pile body is installed in the base, the plurality of groups of ground-anchoring rods are located outside the pile body, the contact area of the ground-anchoring rods and the base is increased, the stability of the pile body when being connected with the base is improved, the pull-out resistance of the pile body is improved, and therefore, the working requirements are met.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a high-pressure jet grouting pile. Background Technology

[0002] High-pressure jet grouting is a type of cement structure embedded in the foundation. It involves injecting cement grout into the soil layer along the borehole wall using a high-pressure rotating nozzle, mixing it with the soil to form a continuously overlapping cement-reinforced body. It is suitable for treating foundations of various soil types, including silt, silty soil, fluid plastic, soft plastic or plastic cohesive soil, silt, sand, loess, plain fill, and gravelly soil. For example, in water conservancy projects such as canal and culvert engineering, high-pressure jet grouting can effectively reinforce silty foundations to ensure the load-bearing capacity of canals and culverts. High-pressure jet grouting can also be used for foundation reinforcement of existing and new buildings, deep foundation pit cutoff walls, slope retaining or water blocking, foundation pit bottom reinforcement, prevention of piping and heave, enclosure and reinforcement of large-diameter underground pipelines, soil reinforcement or waterproofing for subway projects, reservoir dams, seawalls, river embankments, dam body and foundation seepage prevention reinforcement, and construction of underground reservoir cutoff dams.

[0003] In the prior art, such as Chinese utility model patent application number 202120061835.3 entitled "A High-Pressure Jet Grouting Column", a high-pressure jet grouting pile is disclosed, including a pile body, a convex portion on the lower end of the pile body, multiple steel bars embedded in the pile body with their length direction facing the length direction of the pile body, a bent protrusion at the lower end of the steel bars, the convex portion being used to embed into an outer expansion portion at the bottom of the pile hole with a radial dimension greater than the diameter of the pile hole, the outer convex surface of the bent protrusion being away from the center line direction of the pile body, and the bent protrusion portion of the steel bars being located inside the convex portion.

[0004] In the aforementioned patent, the steel bars embedded in the pile body help to improve the strength of the pile body. The outward protrusion at the lower end of the pile body is embedded in the soil around the pile body, which helps to improve the pull-out resistance of the pile body. The bent protrusion of the steel bar is located inside the outward protrusion, making the outward protrusion of the pile body less likely to break under the shear force of the pile body and the surrounding foundation.

[0005] As is known, when using high-pressure jet grouting piles, in order to improve the stability of the foundation, it is necessary to increase the pull-out resistance of the high-pressure jet grouting pile. However, in the above-mentioned patent, although the pull-out resistance of the pile can be further improved, in actual use, the surface of the steel bar is smooth, and the stability is difficult to be stabilized, which to some extent affects the pull-out resistance of the jet grouting pile. Summary of the Invention

[0006] The purpose of this invention is to provide a high-pressure jet grouting pile to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure jet grouting pile, comprising a pile body, wherein multiple sets of fixing components are provided on the side wall of the pile body, the fixing components including ground anchor rods slidably connected to the pile body; a triggering component is provided at the bottom of the pile body, the triggering component being connected to the multiple sets of ground anchor rods via a transmission component; when the pile body is installed inside the base, the triggering component touches the ground, and drives the multiple sets of ground anchor rods to slide synchronously, so that the ground anchor rods are inserted into the base and the pile body is fixed.

[0008] Furthermore, the triggering component includes a trigger rod slidably connected inside the pile body, and a trigger plate is fixedly connected to the bottom of the trigger rod.

[0009] Furthermore, multiple sets of sliding grooves are provided on the periphery of the pile body, and each ground anchor rod is slidably connected to the pile body through the corresponding sliding groove.

[0010] Furthermore, the transmission assembly includes a drive block that is vertically slidably connected inside the pile body, and the drive block is fixedly connected to the trigger rod; each ground anchor is provided with a force-bearing block, and the drive block abuts against the force-bearing block.

[0011] Furthermore, a retraction spring is provided between each of the force-bearing blocks and the pile body. The elastic force of the retraction spring drives the force-bearing block away from the pile body, so that the ground anchor is retracted inside the pile body.

[0012] Furthermore, the pile body is equipped with a locking assembly for locking the ground anchor rod.

[0013] Furthermore, the locking assembly includes multiple sets of locking blocks that are vertically slidably connected inside the pile body. Each of the force-bearing blocks is provided with a locking groove, and each locking block is inserted into the corresponding locking groove.

[0014] Furthermore, a connecting plate is slidably connected inside the pile body, and multiple sets of sliding rods are slidably connected to the connecting plate. Each locking block is slidably connected to the corresponding sliding rod. A threaded rod is threadedly connected to the pile body, and the threaded rod is rotatably connected to the connecting plate.

[0015] Furthermore, each of the sliding rods is slidably connected to the connecting plate, and multiple sets of connecting springs are provided between the multiple locking blocks and the connecting plate. The elastic force of the connecting springs drives the locking blocks to be inserted into the corresponding locking grooves.

[0016] Furthermore, each of the locking blocks is provided with a wedge-shaped groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This high-pressure jet grouting pile, through the cooperation of the fixing component, pile body, ground anchor rods, triggering component, and transmission component, requires the triggering component to be in contact with the ground first during use. More specifically, when the pile body is installed inside the base, the triggering component is in contact with the ground, driving multiple sets of ground anchor rods to slide synchronously, allowing the ground anchor rods to be inserted into the base and fix the pile body. Therefore, when the pile body is installed in the base, the multiple sets of ground anchor rods are located outside the pile body, increasing the contact area between the ground anchor rods and the base, thereby improving the stability of the pile body when connected to the base, increasing the pile body's pull-out resistance, and thus meeting the working requirements, resulting in good performance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall top view structure provided for an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the structure in sectional view along the AA section;

[0022] Figure 4 This is a schematic diagram of the internal structure of the pile provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of the pile from another perspective, provided in an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the trigger component structure provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the locking component structure provided in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the ground anchor structure provided in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached drawings: 1. Pile body; 2. Trigger assembly; 201. Trigger rod; 202. Trigger plate; 3. Ground anchor rod; 4. Force-bearing block; 5. Recovery spring; 6. Slide groove; 7. Drive block; 8. Locking groove; 9. Locking block; 10. Sliding rod; 11. Connecting plate; 12. Threaded rod; 13. Connecting spring; 14. Wedge groove. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-8 The present invention provides a technical solution: a high-pressure jet grouting pile, including a pile body 1, with multiple sets of fixing components arranged on the side wall of the pile body 1, the fixing components including ground anchor rods 3 slidably connected to the pile body 1; a triggering component 2 is arranged at the bottom of the pile body 1, the triggering component 2 being connected to the multiple sets of ground anchor rods 3 through a transmission component; when the pile body 1 is installed inside the base, the triggering component 2 touches the ground, and the triggering component 2 drives the multiple sets of ground anchor rods 3 to slide synchronously, so that the ground anchor rods 3 are inserted into the base and the pile body 1 is fixed.

[0030] Specifically, the high-pressure jet grouting pile includes a pile body 1, on which multiple sets of fixing components are installed on the side wall. By installing multiple sets of fixing components, the contact area between the pile body 1 and the base can be increased, thereby improving the stability between the pile body 1 and the base, resulting in better performance. The fixing components include ground-holding rods 3 slidably connected to the pile body 1. More specifically, the ground-holding rods 3 are equipped with multiple sets of gripping teeth, allowing for more complete contact with the base, further increasing the stress-bearing area, and thus making the ground-holding rods 3 more stable and effective during use. The pile body 1 has a trigger component 2 at its bottom. The trigger component 2 is connected to multiple sets of ground anchor rods 3 via a transmission component. Therefore, during use, the trigger component 2 must first be in contact with the ground. More specifically, when the pile body 1 is installed inside the base, the trigger component 2, in contact with the ground, drives the multiple sets of ground anchor rods 3 to slide synchronously, allowing the ground anchor rods 3 to insert into the base and fix the pile body 1. Thus, when the pile body 1 is installed in the base, the multiple sets of ground anchor rods 3 are located on the outside of the pile body 1, increasing the contact area between the ground anchor rods 3 and the base. This improves the stability of the pile body 1 when connected to the base, enhances its pull-out resistance, and meets operational requirements, resulting in better performance. Compared to existing technologies, this application provides more ground anchor rods 3 on the outside of the pile body 1, further improving the stability of the pile body 1 during installation and use, resulting in better performance.

[0031] The beneficial effects of this invention are as follows: The high-pressure jet grouting pile, through the cooperation of the fixing component, pile body, ground anchor rods, triggering component, and transmission component, requires the triggering component to be in contact with the ground first during use. More specifically, when the pile body is installed inside the base, the triggering component is in contact with the ground, driving multiple sets of ground anchor rods to slide synchronously, allowing the ground anchor rods to be inserted into the base and fix the pile body. Therefore, when the pile body is installed in the base, the multiple sets of ground anchor rods are located outside the pile body, increasing the contact area between the ground anchor rods and the base, thereby improving the stability of the pile body when connected to the base, increasing the pile body's pull-out resistance, and thus meeting the working requirements, resulting in good performance.

[0032] In the embodiments provided by the present invention, the triggering component 2 includes a triggering rod 201 slidably connected inside the pile body 1, and a triggering plate 202 is fixedly connected to the bottom of the triggering rod 201. Therefore, when the pile body 1 is in use, the triggering plate 202 will drive the triggering rod 201 to slide upward, thereby driving multiple sets of ground anchoring rods 3 to slide away from the pile body 1 through the transmission component, which has a good effect.

[0033] In the embodiments provided by the present invention, multiple sets of sliding grooves 6 are opened on the side of the pile body 1, and each ground anchor 3 is slidably connected to the pile body 1 through the corresponding sliding groove 6, which makes it more convenient to connect and use the ground anchor 3 and has a good effect.

[0034] In the embodiments provided by this invention, the transmission assembly includes a drive block 7 vertically slidably connected inside the pile body 1, and the drive block 7 is fixedly connected to the trigger rod 201; each ground anchoring rod 3 is provided with a force-bearing block 4, and the drive block 7 abuts against the force-bearing block 4. Both the force-bearing block 4 and the drive block 7 are wedge-shaped blocks for ease of use. When the pile body 1 touches the ground, the trigger plate 202 drives the trigger rod 201 to slide upwards. When the trigger rod 201 slides upwards, it drives the drive block 7 to slide upwards. After the drive block 7 slides upwards, it drives multiple sets of force-bearing blocks 4 to slide in a predetermined direction, thereby driving multiple sets of ground anchoring rods 3 to slide out of the pile body 1, resulting in good performance.

[0035] In the embodiments provided by the present invention, each force-bearing block 4 is provided with a retraction spring 5 between it and the pile body 1. The elastic force of the retraction spring 5 drives the force-bearing block 4 away from the pile body 1, so that the ground anchor 3 is retracted inside the pile body 1. Specifically, when it is necessary to retract the pile body 1, the pile body 1 is driven to slide upward a certain distance. At this time, the driving block 7 reduces the squeezing force on the force-bearing block 4. During the process of the retraction spring 5 restoring its elastic deformation, the force-bearing block 4 is driven to slide inside the pile body 1, thereby driving the ground anchor 3 to slide into the pile body 1, reducing the contact between the entire pile body 1 and the base, making it easier to pull the pile body 1 out of the base, meeting the needs of the working environment, and achieving good results.

[0036] In the embodiments provided by the present invention, a locking component for locking the ground anchor rods 3 is provided inside the pile body 1. By providing the locking component, when the pile body 1 does not need to be removed, the locking component can fix multiple sets of ground anchor rods 3, thereby further improving the stability of the pile body 1 during installation, with good effect.

[0037] In the embodiments provided by the present invention, the locking assembly includes multiple sets of locking blocks 9 vertically slidably connected inside the pile body 1. Each force-bearing block 4 is provided with a locking groove 8, and each locking block 9 is inserted into the corresponding locking groove 8. Therefore, when it is necessary to fix the ground anchor 3, the locking block 9 is driven to be inserted into the corresponding locking groove 8, thereby improving the stability of the ground anchor 3 when it is fixed, and the effect is good.

[0038] In the embodiment provided by the present invention, a connecting plate 11 is slidably connected inside the pile body 1, and multiple sets of sliding rods 10 are slidably connected on the connecting plate 11. Each locking block 9 is slidably connected to the corresponding sliding rod 10. A threaded rod 12 is threadedly connected to the pile body 1, and the threaded rod 12 is rotatably connected to the connecting plate 11. Therefore, when it is necessary to fix the ground anchor 3, by driving the threaded rod 12 to rotate, the threaded rod 12 can drive the connecting plate 11 to slide downward. When the connecting plate 11 slides downward, it can drive multiple locking blocks 9 to be inserted into the corresponding locking grooves 8, thereby fixing the force-bearing block 4. When the force-bearing block 4 is fixed, the ground anchor 3 is fixed, which has a good effect.

[0039] In the embodiments provided by the present invention, each sliding rod 10 is slidably connected to the connecting plate 11, and multiple sets of connecting springs 13 are provided between the multiple locking blocks 9 and the connecting plate 11. The elastic force of the connecting springs 13 drives the locking blocks 9 to be inserted into the corresponding locking grooves 8, which has a good effect.

[0040] In the embodiments provided by the present invention, each locking block 9 is provided with a wedge-shaped groove 14, which facilitates the locking block 9 to be inserted into the locking groove 8.

[0041] Working principle: When the pile 1 touches the ground, the trigger plate 202 drives the trigger rod 201 to slide upward. When the trigger rod 201 slides upward, it drives the drive block 7 to slide upward. After the drive block 7 slides upward, it drives multiple sets of force-bearing blocks 4 to slide in a predetermined direction, thereby driving multiple sets of ground anchors 3 to slide out from inside the pile 1. At this time, the multiple sets of ground anchors 3 are located on the outside of the pile 1, increasing the contact area between the ground anchors 3 and the base, thereby improving the stability of the connection between the pile 1 and the base, improving the pull-out resistance of the pile 1, and thus meeting the working requirements. At this time, the ground anchors 3 are fixed inside the base by the locking assembly. The specific operation is as follows: by driving the threaded rod 12 to rotate, the threaded rod 12 drives the connecting plate 11 to slide downward. When the connecting plate 11 slides downward, it drives multiple locking blocks 9 to insert into the corresponding locking grooves 8, thereby fixing the force-bearing blocks 4. When the force-bearing blocks 4 are fixed, the ground anchors 3 are fixed, with good effect. When it is necessary to pull the pile 1 out of its base, the threaded rod 12 is first driven to rotate. The threaded rod 12 drives the connecting plate 11 to slide upward, causing multiple sets of locking blocks 9 to be removed from their respective locking grooves 8. Then, the pile 1 is driven to slide upward. After the pile 1 has slid upward a certain distance, the driving block 7 reduces the squeezing force on the force-bearing block 4. During the process of the spring 5 restoring its elastic deformation, the force-bearing block 4 is driven to slide inside the pile 1. This allows the ground anchor 3 to slide into the pile 1, reducing the contact between the entire pile 1 and the base, making it easier to pull the pile 1 out of the base, meeting the needs of the working environment, and achieving good results.

[0042] It should be noted that all electrical equipment involved in this application can be powered by batteries or external power sources.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure jet grouting pile, comprising a pile body (1), characterized in that: a plurality of fixing assemblies are arranged on the side wall of the pile body (1), and each fixing assembly comprises a ground-anchoring rod (3) slidingly connected to the pile body (1); a triggering assembly (2) is arranged at the bottom of the pile body (1), and the triggering assembly (2) is in transmission connection with the plurality of ground-anchoring rods (3) through a transmission assembly; when the pile body (1) is installed inside a base, the triggering assembly (2) is grounded, and the plurality of ground-anchoring rods (3) are driven to slide synchronously by the triggering assembly (2) so that the ground-anchoring rods (3) are inserted into the base to fix the pile body (1); the triggering assembly (2) comprises a triggering rod (201) slidingly connected to the inside of the pile body (1), and a triggering plate (202) is fixedly connected to the bottom of the triggering rod (201); the transmission assembly comprises a driving block (7) vertically slidingly connected to the inside of the pile body (1), and the driving block (7) is fixedly connected to the triggering rod (201); each ground-anchoring rod (3) is provided with a force receiving block (4), and the driving block (7) is in abutment with the force receiving block (4); the inside of the pile body (1) is provided with a locking assembly for locking the ground-anchoring rod (3); the locking assembly comprises a plurality of locking blocks (9) vertically slidingly connected to the inside of the pile body (1), each force receiving block (4) is provided with a locking groove (8), and each locking block (9) is inserted into the corresponding locking groove (8); the inside of the pile body (1) is slidingly connected with a connecting plate (11), the connecting plate (11) is slidingly connected with a plurality of sliding rods (10), each locking block (9) is slidingly connected with the corresponding sliding rod (10); a threaded rod (12) is threadedly connected to the pile body (1), and the threaded rod (12) is rotatably connected to the connecting plate (11); a plurality of sliding grooves (6) are formed in the circumferential surface of the pile body (1), and each ground-anchoring rod (3) is slidingly connected with the pile body (1) through the corresponding sliding groove (6); a recovery spring (5) is arranged between each force receiving block (4) and the pile body (1), and the elastic force of the recovery spring (5) drives the force receiving block (4) to move away from the pile body (1) so that the ground-anchoring rod (3) is recovered into the pile body (1); each sliding rod (10) is slidingly connected with the connecting plate (11), a plurality of connecting springs (13) are arranged between the plurality of locking blocks (9) and the connecting plate (11), and the elastic force of the connecting spring (13) drives the locking block (9) to be inserted into the corresponding locking groove (8); a wedge-shaped groove (14) is formed in each locking block (9). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The high-pressure jet grouting pile according to claim 1, characterized in that: ​ 3. The high-pressure jet grouting pile according to claim 2, characterized in that: ​ 4. The high-pressure jet grouting pile according to claim 1, characterized in that: ​ 5. The high-pressure jet grouting pile according to claim 1, characterized in that: ​

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