Pile-net composite foundation reinforcing structure and treatment method thereof

Abstract

The application discloses a pile-net composite foundation reinforcing structure and a processing method thereof, and comprises a positioning cylinder, a progressive cylinder, an inserted pile, a blocking plate and an embedded plate located in an embedded groove, and an inserted plate. A blocking groove is formed in the blocking plate, and a connecting plate is rotationally connected between the top end of the embedded groove and the top end of the blocking plate. The inserted pile is first inserted into the foundation, and the inserted pile is quickly and largely inserted downwards. The progressive cylinder is slowly and slightly inserted into the foundation while self-rotating, and the foundation around the inserted pile is extruded to reinforce the foundation around the inserted pile. The quick insertion of the inserted pile and the further extrusion of the progressive cylinder can effectively increase the compactness of the foundation soil, improve the bearing capacity and stability of the foundation, and reduce the settlement and deformation of the foundation. The pile-net composite foundation reinforcing structure and the construction method thereof have strong adaptability to various geological conditions, and are especially suitable for the foundation reinforcement of soft soil layers, loose sand layers and other poor geological conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pile treatment structure, in particular to a pile-net composite foundation reinforcing structure and a treatment method thereof. BACKGROUND

[0002] In civil engineering construction, the stability of the foundation is crucial. Many engineering sites have complex geological conditions, such as soft soil layers, loose sand layers, etc., and the foundation bearing capacity is insufficient, which is prone to settlement, deformation and other problems, seriously affecting the safety and service life of the building. Therefore, the foundation needs to be reinforced and treated.

[0003] Pile foundation is a commonly used technical means in foundation treatment, especially in treating soft soil layer and improving foundation bearing capacity. There are various types of piles, including steel pipe pile, I-shaped steel pile, H-shaped steel pile, reinforced concrete pile, etc.

[0004] The existing steel pipe pile is inserted into the deep foundation by a pile driver. The surrounding geology of the steel pipe pile inserted into the foundation is complex, and the compactness and stability of the soil cannot be improved, which is prone to settlement and deformation of the foundation.

[0005] Therefore, we propose a pile-net composite foundation reinforcing structure and a treatment method thereof. SUMMARY

[0006] The purpose of the present application is to provide a pile-net composite foundation reinforcing structure and a treatment method thereof to solve the problems raised in the background art.

[0007] To achieve the above purpose, the present application provides a pile-net composite foundation reinforcing structure, which comprises a positioning cylinder, a progressive cylinder and an insertion pile, which are sequentially sleeved from outside to inside. The positioning cylinder is buried in the foundation, the progressive cylinder is threadedly connected with the positioning cylinder, the insertion pile is threadedly connected with the progressive cylinder, and the pitch of the outer surface of the progressive cylinder is smaller than that of the outer surface of the insertion pile.

[0008] An embedding groove is formed on the progressive cylinder, a plugging plate is inserted and connected in the embedding groove, a plugging groove is formed on the plugging plate, an embedding plate for insertion into the foundation is rotatably connected in the embedding groove, a connecting plate is rotatably connected between the top end of the embedding plate and the top end of the plugging plate, and a plug-in assembly is rotatably connected in the plugging groove. A through groove is provided on the embedding plate corresponding to the plug-in assembly for sliding cooperation.

[0009] Further, an annular hammer head for tamping soil is arranged at the lower end of the progressive cylinder, and the insertion pile penetrates through the annular hammer head.

[0010] Further, a rotating ring for facilitating clamping by the pile driver is rotatably connected to the end of the progressive cylinder, an extension pile is connected to the top end of the insertion pile, and the progressive cylinder and the extension pile are clamped and inserted by the pile driver.

[0011] Further, the bottom of the sealing plate is provided with an inclined distribution of pressing plates.

[0012] Further, the bottom of the embedding groove is fixedly connected with an elastic rod, and the elastic rod is limitedly matched with the bottom outer wall of the embedding plate.

[0013] Further, the plug-in assembly comprises a plug-in plate in plug-in cooperation with the through groove, and the top of the sealing groove is rotationally connected with a U-shaped rod rotationally connected with the plug-in plate.

[0014] Further, the top of the extension pile and the top of the insertion pile are provided with a first pair of interfaces, the bottom of the extension pile is provided with a second pair of interfaces corresponding to the first pair of interfaces, and the first pair of interfaces and the second pair of interfaces are plugged with a plug-in plate.

[0015] Further, the plug-in plate is threadedly connected at both ends with first and second thread rods in an inclined distribution, the end of the first thread rod penetrates into the first pair of interfaces, and the end of the second thread rod presses against the first thread rod.

[0016] Further, the top edge of the positioning cylinder is provided with an annular convex edge, a plurality of fixing holes are formed in the annular convex edge, the fixing holes are circumferentially spaced, and an anchor rod is arranged in each fixing hole.

[0017] A processing method of a pile-net composite foundation reinforcement structure, according to the above-mentioned pile-net composite foundation reinforcement structure, the specific method comprises the following steps:

[0018] S1, laying out wires, inserting the positioning cylinder into the foundation by excavator excavation, making the bottom of the positioning cylinder flush with the top surface of the foundation by hammering, and fixing the position of the positioning cylinder by penetrating the anchor rod into the fixing hole at the edge of the annular convex edge, and the central axis of the positioning cylinder coincides with the central axis of the pile design;

[0019] S2, inserting, clamping the rotating ring by the pile driver, vertically lifting the progressive cylinder, and then inserting the top of the insertion pile by the pile driver;

[0020] The pile driver clamping the top of the insertion pile vertically moves downward, drives the insertion pile to vertically and non-rotationally insert into the foundation, and the insertion pile quickly and large-distance downwardly inserts;

[0021] At the same time, under the action of the thread, the progressive cylinder slowly and small-distance downwardly inserts into the fixed and immobile positioning cylinder 1 in the foundation, the progressive cylinder rotates, extrudes the foundation around the insertion pile, and reinforces the foundation around the insertion pile;

[0022] S3, increase the extension pile, make the extension pile install to the end of the insertion pile, and hold the top of the extension pile by the pile driver, the pile driver drives the extension pile to move vertically and non-rotationally downwards, so as to drive the insertion pile at the bottom of the extension pile to continue to insert into the foundation non-rotationally;

[0023] When the annular hammer head reaches the design depth, the top of the extension pile is lower than the bottom of the embedded plate at this time;

[0024] S4, concrete is poured into the positioning cylinder, the concrete is gradually inserted into the middle part of the positioning cylinder, the concrete impacts the pressing plate, the sealing plate is moved downwards, so as to drive the embedded plate to rotate and press on the foundation, and under the extrusion of the concrete, the insertion plate is inserted into the foundation;

[0025] S5, the concrete fills and compacts the channel formed by the annular hammer head;

[0026] S6, the steps S1-S5 are operated on other pile positions of the foundation treatment, and the pile net composite foundation reinforcement is completed.

[0027] Compared with the prior art, the beneficial effects of the present application are:

[0028] By driving the insertion pile to first insert into the foundation, the insertion pile is quickly inserted downwards by a large distance, the positioning cylinder is slowly inserted downwards by a small distance while rotating, the foundation around the insertion pile is extruded, the foundation around the insertion pile is reinforced, the rapid insertion of the insertion pile and the further extrusion of the positioning cylinder can effectively increase the compactness of the foundation soil, improve the bearing capacity and stability of the foundation, and reduce the settlement and deformation of the foundation, the pile net composite foundation reinforcement structure and the construction method thereof have strong adaptability to various geological conditions, and are especially suitable for the foundation reinforcement of soft soil layer, loose sand layer and other poor geological conditions;

[0029] Further, by pouring concrete into the positioning cylinder, the concrete is gradually inserted into the middle part of the positioning cylinder, the concrete impacts the pressing plate, the sealing plate is moved downwards, so as to drive the embedded plate to rotate and press on the foundation, and under the extrusion of the concrete, the insertion plate is inserted into the foundation, the stability of the foundation is increased. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic view of the pile driver holding the insertion pile inserted into the foundation of the present application;

[0031] Figure 2 It is a schematic view of the cooperation structure of the pile driver and the insertion pile of the present application;

[0032] Figure 3 It is a schematic view of the cooperation structure of the insertion pile and the extension pile of the present application;

[0033] Figure 4Split structure diagram of the insertion pile and the extension pile of the present application;

[0034] Figure 5 Split structure diagram of the positioning cylinder of the present application;

[0035] Figure 6 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0036] Figure 7 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0037] Figure 8 Split structure diagram of the insertion pile and the extension pile of the present application;

[0038] Figure 9 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0039] Figure 10 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0040] Figure 11 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0041] Figure 12 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0042] Figure 13 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0043] Figure 14 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0044] Figure 15 Split structure diagram of the positioning cylinder, the progressive cylinder and the insertion pile of the present application;

[0045] Figure: 1, positioning cylinder; 2, progressive cylinder; 3, insertion pile; 4, embedding slot; 5, blocking plate; 6, blocking slot; 7, embedding plate; 8, connecting plate; 9, insertion plate; 10, ring hammer head; 11, rotating ring; 12, extension pile; 13, pressing plate; 14, elastic rod; 15, through slot; 16, U-shaped rod; 17, first docking port; 18, second docking port; 19, insertion plate; 20, first threaded rod; 21, second threaded rod; 22, rotating shaft; 23, annular convex edge. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0047] Please refer to Figures 1-15 The present application provides a pile-net composite foundation reinforcing structure, which comprises a positioning cylinder 1, a progressive cylinder 2 and an inserted pile 3 which are sequentially sleeved from outside to inside, the positioning cylinder 1 is embedded in the foundation, the progressive cylinder 2 is threadedly connected with the positioning cylinder 1, the inserted pile 3 is threadedly connected with the progressive cylinder 2, and the pitch of the outer surface of the progressive cylinder 2 is smaller than the pitch of the outer surface of the inserted pile 3.

[0048] An embedding groove 4 is formed in the progressive cylinder 2, a plugging plate 5 is inserted and matched in the embedding groove 4, a plugging groove 6 is formed in the plugging plate 5, a embedding plate 7 for insertion into the foundation is rotatably connected in the embedding groove 4, a connecting plate 8 is rotatably connected between the top end of the embedding plate 7 and the top end of the plugging plate 5, and a plug-in assembly is rotatably connected in the plugging groove 6, and a through groove 15 corresponding to the plug-in assembly is provided on the embedding plate 7.

[0049] A processing method of a pile-net composite foundation reinforcing structure, according to the above-mentioned pile-net composite foundation reinforcing structure, the specific method comprises the following steps.

[0050] S1, wire laying, measuring the wire laying, the axis of the excavation is coincided with the axis in the pile position design, the excavation is made on the foundation by the excavator, so that the excavation depth is consistent with the height of the positioning cylinder 1;

[0051] After the excavation is completed, the positioning cylinder 1 is placed into the excavation by the crane, at this time, the top of the positioning cylinder 1 is flush with the top surface of the foundation, and then the anchor rod is inserted into the foundation through the fixing hole on the annular convex edge 23, so as to limit the positioning cylinder 1 and avoid self-rotation of the positioning cylinder 1.

[0052] The top edge of the positioning cylinder 1 is provided with an annular convex edge 23, a plurality of fixing holes are formed in the annular convex edge 23, the fixing holes are circumferentially spaced, and an anchor rod is arranged in each fixing hole.

[0053] S2, inserting, the rotating ring 11 is clamped by the clamping piece at the bottom end of the pile driver, wherein the hammering structure of the pile driver is located at the side of the inserted pile 3, the clamping piece at the bottom end of the hammering structure of the pile driver is horizontally arranged, the rotating ring 11 is clamped, the vertical rising clamping piece vertically lifts the progressive cylinder 2, then the progressive cylinder 2 is slowly lowered, the bottom of the progressive cylinder 2 is butted into the top of the positioning cylinder 1, and the progressive cylinder 2 and the positioning cylinder 1 are threadedly connected.

[0054] Loosen the clamping of the pile driver, and make the clamping part clamp the inserted pile 3. Vertically lift the inserted pile 3, and make the inserted pile 3 inserted into the top of the advancing barrel 2. The annular hammer head 10 enters the inside of the advancing barrel 2 (the size of the annular hammer head 10 is slightly smaller than the diameter of the inserted pile 3). The inserted pile 3 is screwed with the advancing barrel 2;

[0055] The pile driver clamps the top of the inserted pile 3, and drives the inserted pile 3 to be inserted into the foundation along the advancing barrel 2. The inserted pile 3 is quickly inserted into the foundation by a large distance. During the process, the inserted pile 3 only moves downward without rotating. It is worth noting that the position of the hammering structure does not coincide with the central axis of the inserted pile 3.

[0056] At the same time, the vertically downward moving inserted pile 3 cooperates with the fixed positioning barrel 1. The positioning barrel 1 is screwed with the outer wall of the advancing barrel 2, and the inserted pile 3 is screwed with the inner wall of the advancing barrel 2. The pitch of the outer surface of the advancing barrel 2 is smaller than the pitch of the outer surface of the inserted pile 3. Therefore, the advancing barrel 2 rotates by screwing and moves downward along the positioning barrel 1. At the same time, the advancing barrel 2 slowly rotates by screwing and slowly moves downward into the foundation by a small distance. The advancing barrel 2 extrudes the foundation around the inserted pile 3, and reinforces the foundation around the inserted pile 3. Through the quick insertion of the inserted pile 3 and the further extrusion of the advancing barrel 2, the compactness of the foundation soil can be effectively increased, the bearing capacity and stability of the foundation can be improved, and the settlement and deformation of the foundation can be reduced.

[0057] S3, increase the length of the pile 12. When the top end of the inserted pile 3 is lowered to the position close to the top end of the advancing barrel 2, the clamping part is loosened to clamp the top end of the inserted pile 3.

[0058] Then, the length of the pile 12 is installed to the end of the inserted pile 3, and the length of the pile 12 is fixedly connected with the end of the inserted pile 3. Then, the top end of the length of the pile 12 is clamped by the clamping part of the pile driver, and the length of the pile 12 and the inserted pile 3 continue to be inserted into the foundation along the advancing barrel 2 without rotating. Until the annular hammer head 10 reaches the designed depth, at this time, the length of the pile 12 is completely inserted into the positioning barrel 1, and the top end of the length of the pile 12 is lower than the bottom end of the embedded plate 7 (convenient for the subsequent concrete to enter the positioning barrel 1, the embedded plate 7 can be impacted, and the top end of the length of the pile 12 will not interfere).

[0059] S4, pour the concrete into the positioning barrel 1. The concrete is poured through the middle part of the positioning barrel 1 to the middle part of the advancing barrel 2. The concrete impacts the pressing plate 13. The inclined pressing plate 13 helps to hold the concrete. Under the impact of the concrete, the blocking plate 5 moves vertically downward. The top end of the vertically downward moving blocking plate 5 pulls the connecting plate 8, and the connecting plate 8 rotates, thereby driving the embedded plate 7 to rotate around the rotating shaft 22 as the rotating center. The bottom end of the embedded plate 7 rotates outward in a circular motion, so that the embedded plate 7 is inclined and inserted into the foundation. Under the extrusion of the concrete, the plug plate 9 moves relatively along the through slot 15 on the embedded plate 7, and the plug plate 9 further inserts into the foundation to increase the stability of the foundation.

[0060] S5, the concrete fills the channel formed by the annular hammer head 10;

[0061] S6, the steps S1-S5 are performed on other pile positions of the foundation treatment, and the pile-net composite foundation reinforcement is completed. The pile-net composite foundation reinforcement structure and the construction method thereof have strong adaptability to various geological conditions, and are especially suitable for foundation reinforcement in poor geological conditions such as soft soil layer and loose sand layer.

[0062] The insertion pile 3, the progressive cylinder 2, the positioning cylinder 1 (similar to a steel casing), the extension pile 12, the pressing plate 13, the sealing plate 5, the embedded plate 7, the connecting plate 8, and the insertion plate 9 in the application are all steel structures.

[0063] The pitch of the outer surface of the progressive cylinder 2 is smaller than the pitch of the outer surface of the insertion pile 3. Through the setting of the pitch, the insertion pile 3 moves downward (the insertion pile 3 does not rotate) quickly, while the progressive cylinder 2 moves downward slowly. The progressive cylinder 2 rotates, and the insertion pile 3 is inserted into the ground first, which can extrude the ground layer around the insertion pile 3. Then, the progressive cylinder 2 moving along the insertion pile 3 further extrudes the ground layer around the insertion pile 3, thereby increasing the stability of the foundation.

[0064] The lower end of the progressive cylinder 2 is provided with an annular hammer head 10 for tamping soil, and the insertion pile 3 penetrates the annular hammer head 10. The progressive cylinder 2 rotates while driving the annular hammer head 10 to rotate. The slow rotation of the annular hammer head 10 helps the progressive cylinder 2 with a large diameter to enter the deep part of the foundation.

[0065] The end of the progressive cylinder 2 is rotationally connected with a rotating ring 11 for facilitating clamping by a pile driver. The top end of the insertion pile 3 is connected with an extension pile 12. The progressive cylinder 2 and the extension pile 12 are clamped and inserted downward by the pile driver. When the top of the insertion pile 3 moves to the height close to the top opening of the positioning cylinder 1, the extension pile 12 is connected to the insertion pile 3, and the top of the extension pile 12 is clamped by the pile driver, so that the insertion pile 3 and the extension pile 12 continue to be inserted downward into the deep part of the foundation, while the progressive cylinder 2 continues to move downward slowly and rotate.

[0066] The surface of the extension pile 12 is provided with a thread structure consistent with the surface of the insertion pile 3, so that the extension pile 12 is threadedly connected with the inner wall of the progressive cylinder 2.

[0067] The connection between the extension pile 12 and the insertion pile 3 is described as follows:

[0068] A first interface 17 is arranged on the top of the extension pile 12 and the top of the inserted pile 3, a second interface 18 corresponding to the first interface 17 is arranged on the bottom of the extension pile 12, and a plug-in plate 19 is inserted between the first interface 17 and the second interface 18, so that the bottom of the extension pile 12 is connected with the top of the inserted pile 3, and the first interface 17 and the second interface 18 are communicated correspondingly;

[0069] The plug-in plate 19 is threadedly connected with a first threaded rod 20 and a second threaded rod 21 arranged in an inclined manner at both ends of the plug-in plate 19, the first threaded rod 20 is inserted into the first interface 17, and the second threaded rod 21 abuts against the first threaded rod 20;

[0070] First, the second threaded rod 21 is screwed into the plug-in plate 19, so that the bottom end of the second threaded rod 21 does not pass out of the plug-in plate 19, and the top of the inclined second threaded rod 21 is lower than the top surface of the plug-in plate 19;

[0071] Then, the plug-in plate 19 is inserted into the first interface 17 and the second interface 18, and the first threaded rod 20 is rotated to pass through the plug-in plate 19 and be inserted and fixed in the reserved hole in the inserted pile 3;

[0072] Finally, the second threaded rod 21 is rotated to pass through the plug-in plate 19, and the inclined second threaded rod 21 abuts against the first threaded rod 20, so as to ensure the stability of the plug-in plate 19, thereby ensuring the stability of the connection between the inserted pile 3 and the extension pile 12; the first threaded rod 20 and the second threaded rod 21 in the application can be provided in multiple groups.

[0073] The elastic rod 14 is fixedly connected to the bottom of the embedding groove 4 and is limitedly matched with the bottom outer wall of the embedding plate 7; due to the arrangement of the elastic rod 14, the embedding plate 7 remains in a state of not moving relative to the progressive cylinder 2 during the downward movement and self-rotation of the progressive cylinder 2, and the elastic rod 14 does not contact the hole wall (the hole wall of the hole formed during the insertion of the annular hammer head 10 into the foundation) during the downward movement of the progressive cylinder 2;

[0074] The bottom of the plugging plate 5 is provided with an abutting plate 13 arranged in an inclined manner; when the inserted pile 3 is inserted into the deep foundation, the extension pile 12 is located at the top of the bottom of the progressive cylinder 2, and the top of the progressive cylinder 2 is located at the bottom of the positioning cylinder 1, the concrete is poured from top to bottom, the concrete impacts the abutting plate 13 arranged in an inclined manner, and the abutting plate 13 and the plugging plate 5 move downward;

[0075] As Figure 15As shown, the downward moving blocking plate 5 rotates the embedded plate 7 through the connecting plate 8 (the embedded plate 7 rotates around the pivot 22, it is worth noting that the middle part of the pivot 22 is an arc segment, and the two ends are straight segments, that is, the arc segment in the pivot 22 is fixed in the embedded plate 7, and the straight segments at both ends of the pivot 22 pass through the embedded plate 7 and are rotationally connected with the progressive cylinder 2), the bottom of the embedded plate 7 overcomes the elasticity of the elastic rod 14, the elastic rod 14 is bent, the embedded plate 7 rotates out of the embedded groove 4, and the bottom of the embedded plate 7 is clamped into the foundation, on the other hand, the plug-in assembly includes the plug plate 9 inserted into the through groove 15, the U-shaped rod 16 rotationally connected with the plug plate 9 is rotationally connected at the top of the blocking groove 6, the through groove 15 is formed in the embedded plate 7 and slidably connected with the plug plate 9 (the size of the slot of the through groove 15 close to the blocking plate 5 is larger than that away from the blocking plate 5), and the U-shaped rod 16 is lowered at the top synchronously with the lowering of the blocking plate 5, and the U-shaped rod 16 rotates, so that the plug plate 9 slides along the through groove 15 relative to the embedded plate 7, and the plug plate 9 is inserted into the foundation, further ensuring the stable connection between the progressive cylinder 2 and the foundation.

[0076] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that are not specifically enumerated herein. Thus, for example, any statements regarding the preferred embodiment or the preferred implementation are intended to be illustrative only and are not meant in a restrictive sense. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that are not specifically enumerated herein. Thus, for example, any statements regarding the preferred embodiment or the preferred implementation are intended to be illustrative only and are not meant in a restrictive sense.

[0077] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A pile net composite foundation reinforcement structure, characterized in that: comprising a positioning cylinder (1), a progressive cylinder (2) and an inserted pile (3) which are sequentially sleeved from outside to inside, the positioning cylinder (1) is embedded in the foundation, the progressive cylinder (2) is threadedly connected with the positioning cylinder (1), the inserted pile (3) is threadedly connected with the progressive cylinder (2), and the pitch of the outer surface of the progressive cylinder (2) is smaller than the pitch of the outer surface of the inserted pile (3); An embedded groove (4) is formed in the progressive cylinder (2), a blocking plate (5) is inserted and matched in the embedded groove (4), a blocking groove (6) is formed in the blocking plate (5), a embedded plate (7) for inserting into the foundation is rotatably connected in the embedded groove (4), a connecting plate (8) is rotatably connected between the top end of the embedded plate (7) and the top end of the blocking plate (5), the blocking groove (6) is rotatably connected with a plug-in assembly, and the embedded plate (7) is provided with a through groove (15) which is slidingly matched with the plug-in assembly. The lower end of the progressive cylinder (2) is provided with an annular hammer head (10) for tamping soil, and the inserted pile (3) penetrates through the annular hammer head (10).

2. The pile-net composite ground reinforcement structure according to claim 1, characterized by: The end of the progressive cylinder (2) is rotatably connected with a rotating ring (11) which is convenient for the clamping of a pile driver, the top end of the inserted pile (3) is connected with an extension pile (12), and the progressive cylinder (2) and the extension pile (12) are clamped and inserted by the pile driver.

3. The pile-net composite ground reinforcement structure according to claim 2, characterized by: The bottom of the blocking plate (5) is provided with an inclined pressure plate (13).

4. The pile-net composite ground reinforcement structure according to claim 3, characterized by: The bottom of the embedded groove (4) is fixedly connected with an elastic rod (14), and the elastic rod (14) is limitingly matched with the bottom outer wall of the embedded plate (7).

5. The pile-net composite ground reinforcement structure according to claim 4, characterized by: The plug-in assembly comprises a plug plate (9) which is plug-in matched with the through groove (15), and the top of the blocking groove (6) is rotatably connected with a U-shaped rod (16) which is rotatably connected with the plug plate (9).

6. The pile-net composite ground reinforcement structure according to claim 5, characterized by: The top of the extension pile (12) and the top of the inserted pile (3) are provided with a first butt joint (17), the bottom of the extension pile (12) is provided with a second butt joint (18) corresponding to the first butt joint (17), and the first butt joint (17) and the second butt joint (18) are plug-in connected with a plug-in plate (19).

7. The pile-net composite ground reinforcement structure according to claim 6, characterized by: The two ends of the plug-in plate (19) are threadedly connected with an inclined first threaded rod (20) and a second threaded rod (21), the end of the first threaded rod (20) penetrates into the first butt joint (17), and the end of the second threaded rod (21) abuts against the first threaded rod (20).

8. The pile-net composite ground reinforcement structure according to claim 7, characterized by: The top edge of the positioning cylinder (1) is provided with an annular convex edge (23), a plurality of fixing holes are formed in the annular convex edge (23), the fixing holes are circumferentially spaced, and an anchor rod is inserted into each fixing hole.

9. The pile-net composite ground reinforcement structure according to claim 1, characterized by: The method comprises the following steps:

10. A method of treating a pile-net composite ground reinforcement structure, characterized by, S1, line laying, excavating by an excavator, inserting the positioning cylinder (1) into the foundation, making the bottom of the positioning cylinder (1) flush with the top surface of the foundation by hammering, fixing the position of the positioning cylinder (1) by inserting the anchor rod into the fixing hole at the edge of the annular convex edge (23), and making the central axis of the positioning cylinder (1) coincide with the central axis in the pile position design; ​ S2, down, through the pile driver clamping rotating ring (11), vertical lifting progressive cylinder (2), make the progressive cylinder (2) threaded into the positioning cylinder (1), and then through the pile driver clamping inserted pile (3) top; The pile driver clamping inserted pile (3) top moves vertically downward, driving the inserted pile (3) to be inserted into the foundation vertically and non-rotationally, and the inserted pile (3) is inserted into the foundation quickly and by a large distance; At the same time, under the action of the thread, the progressive cylinder (2) is slowly inserted into the foundation in the fixed positioning cylinder (1) by a small distance, the progressive cylinder (2) rotates, and the foundation around the inserted pile (3) is extruded to reinforce the foundation around the inserted pile (3); S3, increase the extension pile (12), make the extension pile (12) installed to the end of the inserted pile (3), and through the pile driver clamping the top of the extension pile (12), the pile driver drives the extension pile (12) to move vertically and non-rotationally downward, thereby driving the inserted pile (3) at the bottom of the extension pile (12) to continue to be inserted into the foundation non-rotationally; When the annular hammer head (10) reaches the designed depth, the top of the extension pile (12) is lower than the bottom of the embedded plate (7) at this time; S4, pour concrete into the positioning cylinder (1), the concrete passes through the middle part of the positioning cylinder (1) to the middle part of the progressive cylinder (2), the concrete impacts the pressing plate (13), the blocking plate (5) moves downward, thereby driving the embedded plate (7) to rotate and press on the foundation, and under the extrusion of the concrete, the inserted plate (9) is inserted into the foundation; S5, the concrete enters the channel formed by the annular hammer head (10) to fill and compact; S6, the steps S1~S5 are operated on other pile positions of the foundation treatment, and the pile-net composite foundation reinforcement is completed.

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