Soft soil foundation reinforcing device and method

Abstract

The invention relates to the field of soft soil foundation reinforcement, in particular to a soft soil foundation reinforcement device and method.The soft soil foundation reinforcement device comprises two symmetrically-arranged steel plates, the two symmetrically-arranged steel plates are each provided with a row of insertion holes, the hole axes of the two rows of insertion holes are arranged in a V shape, a first steel pipe is inserted into each insertion hole, one end of each first steel pipe is in a tip shape, and the other end of each first steel pipe is in a V shape; one end of each first steel pipe is inserted into the soft soil along the corresponding insertion hole, the other end of each first steel pipe is arranged at the upper edge of the corresponding insertion hole, a plurality of guniting holes are formed in each first steel pipe, and an acute angle is formed between the axis of each guniting hole and the axis of the corresponding first steel pipe; the first steel pipes are arranged in the soft soil in a V shape and can lift the soft soil and slurry between the two rows of first steel pipes, the effect of reducing loss of the soft soil and the slurry is achieved, the soft soil and the slurry are fully mixed and fixed together, gaps are reduced, the stability of the high-voltage electric tower foundation pile after landfill is improved, and the high-voltage electric tower foundation pile can resist stronger external impact force.

Description

Technical Field

[0001] The invention relates to the field of soft soil foundation reinforcement, in particular to a soft soil foundation reinforcement device and a reinforcement method. Background Art

[0002] Among municipal engineering projects, one of them is the construction of a power grid system, which specifically involves laying cables through high-voltage towers. When laying cables, you first need to build a high-voltage tower, and the construction of a high-voltage tower requires a stable foundation. You need to build a high-voltage tower foundation on the ground, and generally, the high-voltage tower foundation piles will be pre-buried below the ground to form a high-voltage tower foundation with the ground to provide support for the high-voltage tower.

[0003] When constructing a power grid system, you will encounter the situation of building high-voltage towers on soft soil. At this time, the soft soil area needs to be hardened and reinforced in advance.

[0004] Currently, there are many ways to harden and reinforce soft soil, one of which is the high-pressure jet grouting method, that is, the slurry is sprayed into the soft soil layer through high-pressure equipment and mixed with soil particles to form a reinforced body. This method has a wide range of applications, simple construction, simple equipment, and little disturbance to the surrounding foundations. There is no vibration during construction and little pollution to the planting site. At the same time, the grouting can be concentrated to save slurry.

[0005] However, the environment for building high-voltage towers is complex and diverse. In some remote areas, there are few buildings and trees. When strong winds blow, the strong winds directly hit the high-voltage towers. At this time, the high-voltage tower foundation built by a single high-pressure jet grouting method has not yet provided a stable foundation for the high-voltage tower piles, and it is difficult to withstand the impact of strong winds. In severe cases, the high-voltage tower will be tilted and collapsed.

[0006] Therefore, in order to solve the above problems, a soft soil foundation reinforcement device and reinforcement method are proposed. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a soft soil foundation reinforcement device described in the present invention comprises: Steel plates, two symmetrically arranged steel plates each have a row of plug holes, and the hole axes of the two rows of plug holes are arranged in a "V" shape; A No. 1 steel pipe, wherein a plurality of No. 1 steel pipes are respectively inserted into the insertion hole, and one end of each No. 1 steel pipe is pointed, one end of the No. 1 steel pipe is inserted into the soft soil along the insertion hole, and the other end of the No. 1 steel pipe is placed at the upper edge of the hole of the insertion hole; A spray hole is arranged on each of the No. 1 steel pipes, and the axis of the spray hole is arranged at an acute angle to the axis of the No. 1 steel pipe.

[0009] Preferably, each of the insertion holes is provided with limiting holes on both sides, and each of the No. 1 steel pipes is symmetrically provided with side plates on the sides, the No. 1 steel pipe is inserted into the insertion hole, and the side plates can slide along the limiting holes, and each of the side plates is provided with a plurality of spraying holes, and the spraying holes on the side plates are connected to the interior of the No. 1 steel pipe; A connecting component is provided between the two opposing No. 1 steel pipes on the two steel plates. The connecting component is provided with a sleeve between the two opposing No. 1 steel pipes. Adjusting nuts are rotatably connected at both ends of the sleeve. A pull rod is threadedly connected to the inner ring of the adjusting nut. One end of the pull rod is inserted in the sleeve, and the other end of the pull rod is bent and inserted in the other end of the No. 1 steel pipe.

[0010] Preferably, each of the steel plates is provided with a No. 2 steel pipe at a corner position, and the No. 2 steel pipes on the two steel plates are symmetrically arranged in an "eight" shape.

[0011] Preferably, an extension rod is inserted into each of the No. 1 steel pipes, a hook body is provided at the end of the extension rod, and the end of the hook body is pointed.

[0012] Preferably, the end corners of the two steel plates are connected together by a connecting plate, each connecting plate is provided with an L-shaped notch, each notch is provided with an insertion rod, the insertion rod is vertically inserted into the soft soil, each insertion rod is provided with multiple groups of blocks, each group of blocks is inserted with an insertion block, and two opposite insertion blocks are fixed together by a cross bar.

[0013] Preferably, the soft soil between the two steel plates is used to bury high-voltage tower foundation piles, and multiple circles of fastening rings are arranged on the outer circle of the high-voltage tower foundation piles. The multiple circles of fastening rings are arranged up and down, and each circle of fastening rings is symmetrically provided with support rods, which can be erected on the cross bar.

[0014] Preferably, one side of each support rod is arranged in a blade shape.

[0015] Preferably, an auxiliary component is provided between the two bushings, the auxiliary component comprising two extrusion plates, the ends of the extrusion plates are inserted on the outer ring of the bushing, the middle part of the extrusion plates is arc-shaped and clamped on the outer ring of the high-voltage tower foundation pile.

[0016] A soft soil foundation reinforcement method, which is applicable to the soft soil foundation reinforcement device mentioned above, comprises the following steps: S1: Leveling, leveling at the location of the pre-buried high-voltage tower foundation pile, laying two steel plates, and then inserting No. 1 and No. 2 steel pipes; S2: Insertion: install the connecting plate on the two steel plates, then vertically insert the insert rod into the soft soil along the notch, and at the same time press the cross bar down into the soft soil; S3: Digging a pit, digging a deep pit between the two steel plates, which is used for placing the high-voltage tower foundation piles later; S4: The first grouting, through the high-pressure mud pump and the grouting pipe, the slurry is injected along the No. 1 steel pipe, and the slurry is discharged from the spraying hole and distributed inside the soft soil; S5: placing a high-voltage electric tower foundation pile, inserting the high-voltage electric tower foundation pile with a fastening ring into the pit, and rotating the high-voltage electric tower foundation pile so that the supporting rod rotates to above the crossbar; S6: The second grouting is carried out by injecting the slurry into the gap between the pit and the high-voltage tower foundation pile through a high-pressure mud pump and a grouting pipe.

[0017] Preferably, during the first grouting process, cement slurry is injected into multiple No. 1 steel pipes simultaneously.

[0018] The present invention is beneficial in that: 1. In the present invention, the two rows of No. 1 steel pipes themselves play the role of skeleton support, cooperate with the slurry dispersed in the soft soil, and at the same time, the two rows of No. 1 steel pipes are arranged in a "V" shape inside the soft soil, which can hold the soft soil and slurry between the two rows of No. 1 steel pipes, reduce the loss of soft soil and slurry, make the soft soil and slurry fully mixed and fixed together, reduce the gap, help to improve the stability of the high-voltage tower foundation pile after landfill, and can resist stronger external impact.

[0019] 2. In the present invention, the coordinated design of the cross bar and the support rod can further lift and stabilize the high-voltage tower foundation pile. At the same time, the support rod is matched with the fastening ring set on the high-voltage tower foundation pile, which can indirectly increase the contact area between the high-voltage tower foundation pile and the embedded point, which is also one of the measures to improve the stability of the high-voltage tower foundation pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the soft soil foundation reinforcement device of the present invention; Figure 2 It is a front view of the soft soil foundation reinforcement device of the present invention; Figure 3 It is a three-dimensional diagram of the cooperation between the steel plate and the No. 1 steel pipe in the present invention; Figure 4 It is a three-dimensional diagram of the cooperation between the steel plate and the insertion rod in the present invention; Figure 5 It is a schematic diagram of the cooperation between the steel plate and the No. 2 steel pipe in the present invention; Figure 6 It is a three-dimensional diagram of the cooperation between the insertion rod and the cross bar in the present invention; Figure 7 It is a three-dimensional diagram of the cooperation between the cross bar and the support bar in the present invention; Figure 8 It is a three-dimensional diagram of the cooperation between the No. 1 steel pipe and the side plate in the present invention; Fig. 9 It is a cross-sectional view of the cooperation between the No. 1 steel pipe and the side plate in the present invention; Fig.10 It is a three-dimensional diagram of the cooperation between the No. 1 steel pipe and the extension rod in the present invention; Fig.11 is a three-dimensional diagram of the hook body of the present invention; Fig.12 It is a three-dimensional diagram of the No. 2 steel pipe in the present invention; Fig.13 It is a flow chart of the soft soil foundation reinforcement method in the present invention.

[0021] In the figure: 101, high-voltage tower foundation pile; 1, steel plate; 2, socket; 3, No. 1 steel pipe; 4, shotcrete hole; 5, guide tube; 6, limit hole; 7, side plate; 8, sleeve; 9, adjusting nut; 10, pull rod; 11, No. 2 steel pipe; 12, extension rod; 13, hook body; 14, connecting plate; 15, notch; 16, plug rod; 17, block; 18, plug block; 19, cross bar; 20, fastening ring; 21, support rod; 22, extrusion plate. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] Reference Figure 1 - Figure 5 , a soft soil foundation reinforcement device, comprising two steel plates 1 and a plurality of No. 1 steel pipes 3; two symmetrically arranged steel plates 1, each of which has a row of plug holes 2, the hole axes of the two rows of plug holes 2 are arranged in a "V" shape, each plug hole 2 is inserted with a No. 1 steel pipe 3, one end of each No. 1 steel pipe 3 is pointed, one end of the No. 1 steel pipe 3 is inserted into the soft soil along the plug hole 2, and the other end of the No. 1 steel pipe 3 is placed at the upper edge of the plug hole 2, and a plurality of spray holes 4 are evenly arranged on the surface of each No. 1 steel pipe 3, and the axis of each spray hole 4 is arranged at an acute angle to the axis of the No. 1 steel pipe 3; The soft soil foundation reinforcement device provided in this embodiment is implemented in cooperation with the high-pressure jet grouting method, and is mainly implemented in cooperation with the high-pressure equipment used in the high-pressure jet grouting method, that is, the high-pressure mud pump, which injects the slurry into the No. 1 steel pipe 3; First, level and repair the embedded point, then lay two steel plates 1, and press the two steel plates 1 tightly against the embedded point, and the two steel plates 1 can use steel plates, and then install the No. 1 steel pipe 3; in this embodiment, each socket 2 is also provided with a guide tube 5, and the guide tube 5 is coaxially arranged with the socket 2. When installing the No. 1 steel pipe 3, the No. 1 steel pipe 3 is constrained by the guide tube 5, and the No. 1 steel pipe 3 can be smoothly and neatly inserted into the soft soil. One end of the No. 1 steel pipe 3 is pointed, which is also conducive to inserting into the soft soil. When the other end of the No. 1 steel pipe 3 is flush with the upper end of the guide tube 5, the installation of the No. 1 steel pipe 3 is completed. At this time, the two rows of No. 1 steel pipes 3 are arranged in a "V" shape inside the soft soil; The spraying direction of the spraying hole 4 on the No. 1 steel pipe 3 is set so that when the No. 1 steel pipe 3 is inserted into the soft soil, the soft soil can be reduced from filling into the spraying hole 4, so as to prevent the hard particles in the soft soil from clogging the spraying hole 4; After the No. 1 steel pipe 3 is installed, the pit of the high-voltage tower foundation pile 101 is dug deep and buried. The depth of the pit is flush with the height of one end of the No. 1 steel pipe 3, and then the grouting operation is carried out. A thread is provided in the other end of each No. 1 steel pipe 3. The slurry outlet end of the grouting pipe is threadedly connected to the other end of the No. 1 steel pipe 3, and then the high-pressure mud pump is driven to inject slurry into each No. 1 steel pipe 3 simultaneously. The slurry is discharged along the grouting hole 4 and fills the soft soil gap of the pre-buried point, and the mud wraps the outer surface of the high-voltage tower foundation pile 101. After the slurry solidifies in the later stage, the high-voltage tower foundation pile 101 is placed in the pit, and then the gap between the high-voltage tower foundation pile 101 and the pit is buried with mud. At the same time, the mud injected again will also be bonded and fixed with the previous slurry soft soil mixture. The high-voltage tower foundation pile 101 and the pre-buried point are solidified as a whole through the slurry. The two rows of No. 1 steel pipes 3 themselves play the role of skeleton support, which is equivalent to the steel skeleton in house construction. The steel bars are matched with cement, and the two rows of No. 1 steel pipes 3 are matched with the slurry dispersed in the soft soil. At the same time, the two rows of No. 1 steel pipes 3 are arranged in a "V" shape inside the soft soil, which can hold up the soft soil and slurry between the two rows of No. 1 steel pipes 3, and play a role in reducing the loss of soft soil and slurry, so that the soft soil and slurry are fully mixed and fixed together, reducing the gap, which is helpful to improve the stability of the high-voltage tower foundation pile 101 after landfill, and can withstand stronger external impact.

[0024] Reference Figure 1-Figure 5 ,as well as Figure 8 and Fig. 9 , each of the two sides of the socket 2 is provided with a limiting hole 6, and each side of the first steel pipe 3 is symmetrically provided with a side plate 7, the first steel pipe 3 is inserted into the socket 2, and the side plate 7 can slide along the limiting hole 6, and each of the side plates 7 is provided with a plurality of spraying holes 4, and the spraying holes 4 on the side plates 7 are connected to the inside of the first steel pipe 3; A connecting assembly is provided between two opposing No. 1 steel pipes 3 on the two steel plates 1. The connecting assembly is provided with a sleeve 8 between the two opposing No. 1 steel pipes 3. Adjusting nuts 9 are rotatably connected at both ends of the sleeve 8. A pull rod 10 is threadedly connected to the inner circle of the adjusting nut 9. One end of the pull rod 10 is inserted into the sleeve 8. The other end of the pull rod 10 is bent and inserted into the other end of the No. 1 steel pipe 3. In this embodiment, the side plates 7 are symmetrically arranged on both sides of the No. 1 steel pipe 3, and the side plates 7 are used to assist the No. 1 steel pipe 3 in blocking the soft soil and mud, further reducing the loss of soft soil and mud between the two rows of No. 1 steel pipes 3. At the same time, the side plates 7 are also used to improve the strength of the No. 1 steel pipe 3, so that the No. 1 steel pipe 3 can be stably placed inside the soft soil; a plurality of spray holes 4 are also provided on the side plates 7, and the slurry sprayed from the spray holes 4 radiates a wider range inside the soft soil, and a larger amount of soft soil can be contacted and mixed with the slurry, which helps to improve the support stability of the embedded point; The designed connection assembly is used to stabilize the two rows of No. 1 steel pipes 3 and connect and fix the two steel plates 1 together. That is, after the slurry injection is completed, the other end of the pull rod 10 is inserted into the No. 1 steel pipe 3 on both sides of the steel plate 1, and then the adjusting nut 9 is rotated, and one end of the two pull rods 10 moves into the sleeve 8. The pull rod 10 tightens the two relative No. 1 steel pipes 3 to fix the two steel plates 1. At the same time, the steel plate 1 also stabilizes the remaining No. 1 steel pipes 3, so that the two steel plates 1 and the two rows of No. 1 steel pipes 3 are connected into a whole, the integrity is improved, and the stability and the strength of supporting and fixing the high-voltage tower foundation piles 101 are also improved accordingly.

[0025] Reference Figure 1-Figure 5 Each of the steel plates 1 is provided with a No. 2 steel pipe 11 at a corner position, and the No. 2 steel pipes 11 on the two steel plates 1 are symmetrical and arranged in an "eight" shape; In this embodiment, a plurality of spray holes 4 are also provided on the surface of the designed No. 2 steel pipe 11. After the installation of the No. 1 steel pipe 3 is completed, the No. 2 steel pipe 11 is installed. The No. 2 steel pipe 11 penetrates the steel plate 1 and extends into the soft soil. The No. 2 steel pipes 11 on the two steel plates 1 are arranged in an "eight" shape, which is opposite to the inclination direction of the No. 1 steel pipe 3. They are not only used to support and stabilize the steel plate 1, but also to further improve the stability of the steel plate 1. During the subsequent grouting, the slurry is injected into the No. 2 steel pipe 11 and discharged from the spray holes 4 on the No. 2 steel pipe 11. The slurry has a wider radiation dispersion range, thereby improving the stability and supporting strength of the embedded point.

[0026] Reference Figure 1-Figure 5 ,as well as Figure 8-Figure 11 Each of the first steel pipes 3 is provided with an extension rod 12, and the end of the extension rod 12 is provided with a hook body 13, and the end of the hook body 13 is pointed; After the No. 1 steel pipe 3 is inserted into the soft soil, the extension rod 12 is inserted into the No. 1 steel pipe 3, and the outer ring of the extension rod 12 is in clearance with the inner surface of the No. 1 steel pipe 3, and the slurry can flow along the gap and flow out from the spray hole 4 and the hole at one end of the No. 1 steel pipe 3. When the extension rod 12 is inserted into the soft soil, the two opposite ends of the extension rod 12 are crossed together and form a complete "V" shape skeleton with the No. 1 steel pipe 3. At the same time, the extension rod 12 is rotated and lifted, so that the hook body 13 on one of the extension rods 12 hooks the hook body on the other extension rod 12 13. At this time, the extension rod 12 is pulled up and the extension rod 12 is difficult to move, which means that the two extension rods 12 are hooked together at the bottom of the soft soil. When the slurry is injected later, the slurry will spread to the position of the hook body 13. The extension rod 12, the hook body 13 and the No. 1 steel pipe 3 together form a "V"-shaped fence inside the soft soil. The slurry is constrained in the fence, so that the slurry is fully attached to the extension rod 12, the hook body 13 and the No. 1 steel pipe 3, forming an integral foundation inside the soft soil, further improving the supporting strength and stability of the embedded point.

[0027] Reference Figure 1 - Figure 4 ,as well as Figure 6 and Figure 7 The end corners of the two steel plates 1 are connected together by a connecting plate 14, each connecting plate 14 is provided with an L-shaped notch 15, each notch 15 is provided with a plug rod 16, the plug rod 16 is vertically inserted into the soft soil, each plug rod 16 is provided with a plurality of groups of blocks 17, each group of blocks 17 is inserted with a plug block 18, and two opposite plug blocks 18 are fixed together by a cross bar 19; After the steel plate 1, the No. 1 steel pipe 3 and the No. 2 steel pipe 11 are installed, the plug rod 16 is then installed. The two opposite plug rods 16 are connected together by the cross bar 19. When the plug rod 16 is inserted into the soft soil, the lower end of the plug rod 16 is tilted, and the upper end of the plug rod 16 is tilted to a position point aligned with the end of the steel plate 1. The two opposite plug rods 16 are pressed hard, and the plug rod 16 together with the cross bar 19 are inserted into the soft soil. Then, the connecting plate 14 is installed, and the two ends of the connecting plate 14 are placed at the end corners of the steel plate 1. The two ends of the connecting plate 14 are provided with notches, and are opposite to the holes at the end corners of the steel plate 1. The connecting plate 14 can be fixed to the corners of the steel plate 1 by bolts and nuts. Then, the upper end of the plug rod 16 is moved, and the upper end of the plug rod 16 is slid into the notch 15. At this time, the plug rod 16 is stabilized on the connecting plate 14; Then, a deep pit is dug in the middle of the two steel plates 1. The pit is the pre-buried position point for the high-voltage tower foundation pile 101, and then grouting is performed. The slurry adheres to the outer surface of the insertion rod 16 and the cross bar 19. The setting of the insertion rod 16 and the cross bar 19 is used to block the two sides of the fence formed by the extension rod 12, the hook body 13 and the No. 1 steel pipe 3, further restraining the slurry, and the insertion rod 16 and the cross bar 19 also play the role of auxiliary skeleton, which is also one of the measures to reinforce the pre-buried points.

[0028] Reference Figure 1 - Figure 7 The soft soil between the two steel plates 1 is used to bury the high-voltage tower foundation pile 101. The outer ring of the high-voltage tower foundation pile 101 is provided with multiple circles of fastening rings 20, which are arranged up and down, and each circle of the fastening ring 20 is symmetrically provided with a supporting rod 21, which can be erected on the cross bar 19; When digging the pit, the cross bar 19 needs to be exposed, and then the first grouting is carried out. After the first slurry is dry, the high-voltage tower foundation pile 101 with the fastening ring 20 is placed in the pit. During the placement process, the support rod 21 is parallel to the cross bar 19. When the lower end of the high-voltage tower foundation pile 101 is seated in the pit, the high-voltage tower foundation pile 101 is rotated so that each layer of support rod 21 is rotated to the cross bar 19, and then the second grouting is carried out. The slurry fills the gap between the pit and the high-voltage tower foundation pile 101, and the slurry will also spread to the cross bar 19 and the support rod 21. The cross bar 19 cooperates with the support rod 21 to further lift and stabilize the high-voltage tower foundation pile 101.

[0029] Reference Figure 6 and Figure 7 One side of each support rod 21 is arranged in a blade shape; during the first grouting, part of the slurry will spread to the position of the cross bar 19. When the high-voltage tower foundation pile 101 in the pit is subsequently rotated, the blade part on one side of the support rod 21 will squeeze and cut off the slurry that spreads to the position of the cross bar 19, so that the support rod 21 can be smoothly rotated to the top of the cross bar 19.

[0030] Reference Figure 1 , Figure 2 and Figure 6 An auxiliary component is provided between the two bushings 8, and the auxiliary component includes two extrusion plates 22, the ends of the extrusion plates 22 are inserted on the outer ring of the bushing 8, and the middle part of the extrusion plates 22 is arc-shaped and clamped on the outer ring of the high-voltage tower foundation pile 101; In this embodiment, the outer ring of the sleeve 8 is also threaded with a nut, and the nut at this position is rotated to extrude the end of the extrusion plate 22, so that the middle part of the extrusion plate 22 can be extruded and wrapped around the outer surface of the high-voltage tower foundation pile 101. At this time, the high-voltage tower foundation pile 101 is connected to the soft soil foundation reinforcement device above the embedded point through the extrusion plate 22. At the same time, the high-voltage tower foundation pile 101 is solidified together with the cross slurry between the support rod 21 and the cross bar 19 inside the embedded point, and the high-voltage tower foundation pile 101 is double-fixed, which helps to improve the stability of the high-voltage tower foundation pile 101.

[0031] Reference Fig.13 A soft soil foundation reinforcement method is applicable to the soft soil foundation reinforcement device mentioned above, and the soft soil foundation reinforcement method comprises the following steps: S1: Leveling, leveling at the position of the pre-buried high-voltage tower foundation pile 101, laying two steel plates 1, and then inserting the No. 1 steel pipe 3 and the No. 2 steel pipe 11; S2: Insertion, install the connecting plate 14 on the two steel plates 1, and then vertically insert the insertion rod 16 into the soft soil along the notch 15, and at the same time press the cross bar 19 down into the soft soil; S3: digging a pit, digging a deep pit between the two steel plates 1, and used for placing the high-voltage tower foundation pile 101 later; S4: The first grouting, through the high-pressure mud pump and the grouting pipe, the slurry is injected along the No. 1 steel pipe 3, and the slurry is discharged from the spraying hole 4 and distributed inside the soft soil; S5: placing the high-voltage tower foundation pile 101, inserting the high-voltage tower foundation pile 101 with the fastening ring 20 into the pit, and rotating the high-voltage tower foundation pile 101 so that the support rod 21 rotates to above the cross bar 19; S6: The second grouting is performed by injecting the slurry into the gap between the pit and the high-voltage tower foundation pile 101 through a high-pressure mud pump and a grouting pipe.

[0032] During the first grouting process, cement slurry is injected into the interior of multiple No. 1 steel pipes 3 at the same time.

[0033] Working principle: The first step is to level the embedded point, trim the surface of the embedded point, and remove foreign matter on the surface and obstructions around the embedded point to facilitate construction by the staff; The second step: installing the soft soil foundation reinforcement device, laying the steel plate 1, inserting the No. 1 steel pipe 3, the No. 2 steel pipe 11 and the insertion rod 16, and then digging a deep pit, while including the cross bar 19 in the pit; The third step is to carry out the first grouting, by means of a high-pressure mud pump and a grouting pipe, the slurry is injected into the No. 1 steel pipe 3 and the No. 2 steel pipe 11, and the slurry spreads into the soft soil; Step 4: Place the high-voltage power tower foundation pile 101, and after the first grouting is dry, place the high-voltage power tower foundation pile 101 in the pit, and rotate the high-voltage power tower foundation pile 101 so that the support rod 21 on the high-voltage power tower foundation pile 101 rotates to above the cross bar 19; Step 5: Perform the second grouting, and inject the slurry into the gap between the pit and the high-voltage tower foundation pile 101 through a high-pressure mud pump and a grouting pipe. At the same time, the slurry will also spread to the intersection of the cross bar 19 and the support rod 21, and the high-voltage tower foundation pile 101 and the embedded point will be cast into a whole; Step 6: Install the auxiliary components. The ends of the extrusion plate 22 are fastened together by bolts, and the middle position of the extrusion plate 22 is extruded and wrapped around the outer surface of the high-voltage tower foundation pile 101.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soft soil foundation reinforcement device, characterized in that: include Steel plates (1), two symmetrically arranged steel plates (1) each having a row of insertion holes (2), and the hole axes of the two rows of insertion holes (2) are arranged in a "V" shape; A No. 1 steel pipe (3), wherein a plurality of No. 1 steel pipes (3) are respectively inserted into the insertion hole (2), and one end of each No. 1 steel pipe (3) is pointed, one end of the No. 1 steel pipe (3) is inserted into the soft soil along the insertion hole (2), and the other end of the No. 1 steel pipe (3) is placed at the upper edge of the hole of the insertion hole (2); A spray hole (4) is provided on each of the first steel pipes (3), and the axis of the spray hole (4) is arranged at an acute angle to the axis of the first steel pipe (3).

2. A soft soil foundation reinforcement device according to claim 1, characterized in that: Each of the insertion holes (2) is provided with limiting holes (6) on both sides, and each of the side panels (7) is symmetrically provided with side panels (7) on the sides of the No. 1 steel pipe (3). The No. 1 steel pipe (3) is inserted into the insertion hole (2), and the side panels (7) can slide along the limiting holes (6). Each of the side panels (7) is provided with a plurality of spray holes (4), and the spray holes (4) on the side panels (7) are connected to the interior of the No. 1 steel pipe (3); A connecting assembly is provided between two No. 1 steel pipes (3) opposite to each other on the two steel plates (1), wherein the connecting assembly is provided with a sleeve (8) between the two opposite No. 1 steel pipes (3), both ends of the sleeve (8) are rotatably connected with an adjusting nut (9), the inner ring of the adjusting nut (9) is threadedly connected with a pull rod (10), one end of the pull rod (10) is inserted into the sleeve (8), and the other end of the pull rod (10) is bent and inserted into the other end of the No. 1 steel pipe (3).

3. A soft soil foundation reinforcement device according to claim 2, characterized in that: A No. 2 steel pipe (11) is provided at a corner position of each of the steel plates (1), and the No. 2 steel pipes (11) on the two steel plates (1) are symmetrically arranged in an "eight" shape.

4. A soft soil foundation reinforcement device according to claim 2, characterized in that: An extension rod (12) is inserted into each of the No. 1 steel pipes (3), and a hook body (13) is provided at the end of the extension rod (12), and the end of the hook body (13) is in a pointed shape.

5. The soft soil foundation reinforcement device according to claim 3, characterized in that: The end corners of the two steel plates (1) are connected together by a connecting plate (14), each connecting plate (14) is provided with an L-shaped notch (15), each notch (15) is provided with an insertion rod (16), the insertion rod (16) is vertically inserted into the soft soil, each insertion rod (16) is provided with a plurality of groups of clamping blocks (17), each group of clamping blocks (17) is provided with an insertion block (18), and two opposite insertion blocks (18) are fixedly connected together by a cross bar (19).

6. A soft soil foundation reinforcement device according to claim 5, characterized in that: The soft soil between the two steel plates (1) is used to bury the high-voltage power tower foundation pile (101). The outer ring of the high-voltage power tower foundation pile (101) is provided with a plurality of fastening rings (20). The plurality of fastening rings (20) are arranged vertically, and each fastening ring (20) is symmetrically provided with a supporting rod (21). The supporting rod (21) can be mounted on the crossbar (19).

7. A soft soil foundation reinforcement device according to claim 6, characterized in that: One side of each support rod (21) is arranged in a blade shape.

8. The soft soil foundation reinforcement device according to claim 2, characterized in that: An auxiliary component is provided between the two bushings (8), the auxiliary component comprising two extrusion plates (22), the ends of the extrusion plates (22) being inserted into the outer ring of the bushing (8), the middle portion of the extrusion plates (22) being in an arc shape and clamped onto the outer ring of the high-voltage tower foundation pile (101).

9. A soft soil foundation reinforcement method, which is applicable to any one of the soft soil foundation reinforcement devices in claims 1-8, characterized in that: The soft soil foundation reinforcement method comprises the following steps: S1: Leveling, leveling at the location of the pre-buried high-voltage tower foundation pile (101), laying two steel plates (1), and then inserting a No. 1 steel pipe (3) and a No. 2 steel pipe (11); S2: plugging, installing the connecting plate (14) on the two steel plates (1), and then vertically inserting the plug rod (16) into the soft soil along the notch (15), while also pressing the cross bar (19) down into the soft soil; S3: digging a pit, digging a deep pit between the two steel plates (1) for the subsequent placement of high-voltage tower foundation piles (101); S4: the first grouting, using a high-pressure mud pump in conjunction with a grouting pipe, injecting slurry along the No. 1 steel pipe (3), the slurry is discharged from the grouting hole (4) and distributed inside the soft soil; S5: placing a high-voltage electric tower foundation pile (101), inserting the high-voltage electric tower foundation pile (101) with a fastening ring (20) into the pit, and rotating the high-voltage electric tower foundation pile (101) so that the supporting rod (21) rotates to above the cross rod (19); S6: The second grouting is performed by injecting slurry into the gap between the pit and the high-voltage tower foundation pile (101) through a high-pressure slurry pump and a grouting pipe.

10. A soft soil foundation reinforcement method according to claim 9, characterized in that: During the first grouting process, cement slurry is injected into the interior of the plurality of No. 1 steel pipes (3) simultaneously.

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