Highway foundation reinforcement equipment and construction method

Abstract

The present invention relates to the technical field of highway construction, and specifically to a highway foundation reinforcement device and construction method, including a frame, a ground pressing unit and a reinforcement mechanism. In the present invention, the pile driving action and the soil pressing action are switched sequentially through a conversion group, that is, three soil pressing actions from the inside to the outside are performed sequentially while a single pile driving operation is performed. Secondly, the soil is pressed sequentially from the inside to the outside through the three soil pressing rings in the ground pressing unit, and the soil around the pile is compacted synchronously, which effectively reduces the later settlement of the foundation, and the soil is closely fitted with the pile shaft soil through the soil pressing action, which effectively improves the friction and lateral resistance between the pile and the soil. In summary, the integrity and stability of the foundation are improved, and the problem of foundation instability caused by the soil squeezing effect and the relative displacement between the soil during the pile driving process is avoided.

Description

Technical Field

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

[0002] Steel pipe pile reinforcement technology is widely used in highway foundation reinforcement treatment, especially for soft foundations, unstable soil layers or ground sections that need to bear large loads. Steel pipe piles have the advantages of high bearing capacity, fast construction speed and strong applicability, and can effectively improve the bearing capacity and stability of the foundation.

[0003] At present, when steel pipe pile reinforcement is carried out, the steel pipe pile is mainly pressed into the ground by a static pile driver to complete the piling operation of a single steel pipe pile. However, when the steel pipe pile is pressed into the foundation, the pile body will squeeze the surrounding soil, causing the soil to move and deform. Especially in soft soil, the squeezing effect is particularly obvious, which can easily cause the soil around the pile body to loosen, affecting the reinforcement effect of the highway foundation. Summary of the invention

[0004] Based on this, it is necessary to provide a highway foundation reinforcement equipment and construction method, aiming to solve the above-mentioned problems of the prior art.

[0005] The present application provides a highway foundation reinforcement device, comprising: a frame, the frame is U-shaped and its opening faces upward, a mobile device is fixedly arranged on the right side of the frame, and a ground pressing unit and a reinforcement mechanism are arranged on the frame.

[0006] The ground pressing unit includes a pressure column, and the horizontal section of the frame is slidably arranged with two groups of left-right symmetrical column groups, each column group includes three pressure columns which are equidistantly arranged from left to right and have vertical axes. The lower end surfaces of two left-right symmetrical pressure columns in different column groups are jointly fixed with a soil pressing ring. There are three soil pressing rings, and the three soil pressing rings are distributed in concentric circles.

[0007] The reinforcement mechanism includes a pressure pile, a pressure pile with a vertical axis is installed at the center position of the horizontal section of the frame, which slides up and down and passes through it, a pressure plate is fixedly arranged on the lower end face of the pressure pile, a mounting plate is fixedly arranged between the two vertical sections of the frame, a static pressure plate is installed on the upper end face of the mounting plate so as to slide up and down, a sliding block symmetrically arranged on the mounting plate for sliding left and right is arranged, a transmission column that slides up and down is installed through it on the sliding block, and the transmission column is slidably arranged on the lower end face of the static pressure plate, a static pressure block is fixedly arranged on the lower end face of the transmission column, a conversion group is arranged on the mounting plate, and the operation of the conversion group causes the static pressure block to change the static pressure object.

[0008] According to a favorable embodiment, the ground pressing unit also includes a connecting frame, and two left-right symmetrical connecting frames are fixedly provided on the upper end surfaces of the two inner soil pressing rings. The end surfaces of the connecting frames away from the axes of the soil pressing rings are both provided with L-shaped blocks that slide up and down, and the L-shaped blocks are fixedly connected to the adjacent soil pressing rings on their outer sides.

[0009] According to a favorable embodiment, the ground pressing unit also includes a fixing ring, a fixing ring is fixedly sleeved on the pressure column, two front-to-back symmetrical support frames are fixedly arranged on the fixing ring, the support frames are fixedly connected to the corresponding soil pressing rings, and the support frames on the two left-right symmetrical pressure columns are left-right symmetrical.

[0010] According to a favorable embodiment, the end faces of the support frame facing the axis of the soil compacting ring are fixedly provided with guide blocks, the four guide blocks on the same soil compacting ring are circumferentially distributed about the axis of the soil compacting ring, and the end faces of the guide blocks away from the support frame are movably provided with steel balls.

[0011] According to an advantageous embodiment, a horizontal frame is rotatably sleeved on the pressure pile, and all the pressure columns slide up and down through the horizontal frame.

[0012] According to a favorable embodiment, the reinforcement mechanism also includes a force-bearing block, and a plurality of block groups equidistantly distributed from top to bottom are fixedly arranged on the pressure pile, each block group includes two mutually symmetrical force-bearing blocks, and the projections of the force-bearing blocks in adjacent block groups in the vertical direction are staggered by ninety degrees, the portion of the lower end surface of the force-bearing block away from the pressure pile is chamfered, and through grooves are opened through the frame and the mounting plate.

[0013] According to a preferred embodiment, the conversion group includes a bidirectional threaded rod, the upper end surface of the mounting plate is rotatably provided with a bidirectional threaded rod with an axis extending from left to right, an L-shaped plate is fixedly provided on the sliding block, the bidirectional threaded rod passes through the L-shaped plate and cooperates with the L-shaped plate thread.

[0014] According to a favorable embodiment, the rear end surface of the mounting plate slides back and forth and is penetrated by two groups of left-right symmetrical column groups, the column group includes four locking columns with axes extending from front to back, three of which correspond one to one with the three pressure columns on the same side, and the remaining one locking column corresponds to the pressure pile, the rear end surfaces of all the locking columns are commonly fixed with a movable plate, the rear end surface of the sliding block is provided with a locking groove that cooperates with the locking column, and the front end surface of the locking column is chamfered.

[0015] According to a favorable embodiment, the reinforcement mechanism also includes a transverse plate, a transverse plate is provided on the front end surface of the mounting plate for sliding left and right, the transverse plate is fixedly connected to the right L-shaped plate through a connecting piece, a push rod for sliding up and down is installed through the transverse plate, the lower end of the push rod is rotatably connected to the pressure plate through a connecting strip, a U-shaped push plate is fixedly provided on the upper end surface of the push rod, the opening of the push plate faces the rear side, a push strip is passed through the push plate for sliding up and down, the push strip is a right-angled trapezoidal section, the inclined surface of the push strip faces the left side and is inclined to the right from top to bottom, and a cross strip is fixedly sleeved on the pressure pile.

[0016] In summary, the present invention includes at least one of the following beneficial effects: First, the present invention realizes the sequential switching of pile driving action and soil compacting action through the conversion group, that is, three soil compacting actions from the inside to the outside are performed sequentially during a single pile driving operation, and secondly, the three soil compacting rings in the ground compacting unit are used to compact the soil from the inside to the outside in sequence, and the soil around the pile is compacted synchronously, which effectively reduces the later settlement of the foundation, and the soil is made to fit closely with the pile shaft soil through the soil compacting action, which effectively improves the friction and lateral resistance between the pile and the soil. In summary, the integrity and stability of the foundation are improved, and the problem of foundation instability caused by the soil squeezing effect and the relative displacement between the soil during the pile driving process is avoided.

[0017] Second, in the present invention, the soil is compacted from the inside to the outside through the operation of the conversion group, that is, compaction starts from the place close to the steel pipe pile, which can avoid excessive lateral pressure on the steel pipe pile and prevent it from shifting or tilting.

[0018] 3. In the present invention, a stable triangular frame is formed by the fixed ring and the corresponding support frame thereon, that is, there are two left and right triangular frames on the same soil pressing ring, which ensures the stability of the soil pressing ring during the soil pressing process, and at the same time, the force transmitted from the pressure column is evenly applied to the corresponding soil pressing ring, so that the soil pressing ring applies uniform pressure during the soil pressing process.

[0019] Fourth, the guide block in the present invention guides the downward movement and compaction process of the soil pressing ring during the downward movement of the soil pressing ring to avoid the problem of excessive tilting of the steel pipe pile affecting the reinforcement effect and the deviation of the soil pressing direction of the soil pressing ring causing uneven soil force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A front view of a highway foundation reinforcement device provided according to an embodiment of the present invention is shown.

[0022] Figure 2 A schematic structural diagram of a highway foundation reinforcement device provided according to an embodiment of the present invention is shown.

[0023] Figure 3 A partial structural schematic diagram of a highway foundation reinforcement device provided according to an embodiment of the present invention is shown.

[0024] Figure 4 The embodiment of the present invention provides Figure 3 Enlarged view of point A in the middle.

[0025] Figure 5 A schematic top view of a support frame, a guide block and a connecting frame provided according to an embodiment of the present invention is shown.

[0026] Figure 6 A schematic structural diagram of a rack, a bidirectional threaded rod and an L-shaped plate provided according to an embodiment of the present invention is shown.

[0027] Figure 7 A three-dimensional schematic diagram of a cross bar, a push bar and a push plate provided according to an embodiment of the present invention is shown.

[0028] Figure 8 A schematic diagram of the three-dimensional structure among the mounting plate, the locking column and the static pressure block provided according to an embodiment of the present invention is shown.

[0029] Among them, the above-mentioned drawings include the following figure marks: 1. frame; 2. mobile equipment; 3. ground pressure unit; 30. pressure column; 31. soil pressure ring; 32. connecting frame; 33. L-shaped block; 34. fixing ring; 340. support frame; 35. guide block; 350. steel ball; 36. horizontal frame; 4. reinforcement mechanism; 40. pressure pile; 400. pressure plate; 401. mounting plate; 402. static pressure plate; 403. sliding block; 404. transfer column; 405. static pressure block; 41. force block; 410. through groove; 42. conversion group; 420. bidirectional threaded rod; 421. L-shaped plate; 422. locking column; 423. movable plate; 424. locking groove; 425. transverse plate; 426. push rod; 427. push plate; 428. push bar; 429. cross bar; 5. steel pipe pile. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] like Figure 1 As shown, a highway foundation reinforcement device includes: a frame 1, which is U-shaped and has an opening facing upward, a mobile device 2 is fixedly arranged on the right side of the frame 1, and the mobile device 2 includes existing moving wheels, and a ground pressing unit 3 and a reinforcement mechanism 4 are arranged on the frame 1.

[0032] like Figure 1 and Figure 2 As shown, the ground pressing unit 3 includes a pressure column 30, and the horizontal section of the frame 1 is slidably arranged with two groups of left-right symmetrical column groups, each column group includes three pressure columns 30 which are equidistantly arranged from left to right and have vertical axes. The lower end surfaces of the two left-right symmetrical pressure columns 30 in different column groups are commonly fixed with a soil pressing ring 31, and the number of the soil pressing rings 31 is three, and the three soil pressing rings 31 are distributed in concentric circles.

[0033] like Figure 1 , Figure 2 , Figure 6 and Figure 8 As shown, the reinforcement mechanism 4 includes a pressure pile 40, and a pressure pile 40 with a vertical axis is installed at the center position of the horizontal section of the frame 1, which slides up and down and penetrates through it. A pressure plate 400 is fixedly arranged on the lower end surface of the pressure pile 40, and a mounting plate 401 is fixedly arranged between the two vertical sections of the frame 1, and the pressure column 30 penetrates the mounting plate 401 up and down, and a static pressure plate 402 is installed on the upper end surface of the mounting plate 401 for sliding up and down, and the static pressure plate 402 is driven by an external hydraulic device (not shown in the figure), and a left-right symmetrical sliding block 403 is installed on the mounting plate 401 for sliding left and right, and a transmission column 404 that slides up and down is installed through the sliding block 403, and the transmission column 404 is slidably arranged on the lower end surface of the static pressure plate 402, and a static pressure block 405 is fixedly arranged on the lower end surface of the transmission column 404, and a conversion group 42 is arranged on the mounting plate 401, and the operation of the conversion group 42 causes the static pressure block 405 to change the static pressure object.

[0034] During operation, the frame 1 is first moved to the foundation area to be reinforced by the mobile device 2, and the three soil pressing rings 31 are located at the designated reinforcement position. Then, the steel pipe pile 5 is hoisted and moved to the bottom of the frame 1 by the external lifting equipment, so that the lower end surface of the steel pipe pile 5 is located at the center position of the soil pressing ring 31. Then, the external hydraulic equipment works to make the static pressure block 405 apply force to the pressure pile 40, and transmits the force to the steel pipe pile 5 through the pressure pile 40, completing a single piling action of the steel pipe pile 5. Then, the conversion group 42 works to make the two static pressure blocks 405 move to the top of the corresponding three pressure columns 30 in turn, and repeat the above piling action, so that the three soil pressing rings 31 perform soil pressing actions from the inside to the outside in turn, compacting the soil around the steel pipe pile 5, increasing the soil density in the reinforcement area, avoiding soil displacement or deformation due to the piling process of the steel pipe pile 5, enhancing the friction and lateral resistance between the steel pipe pile 5 and the surrounding soil, and thereby enhancing the overall stability of the area.

[0035] like Figure 1 and Figure 3 As shown, the ground pressing unit 3 also includes a connecting frame 32, and the upper end surfaces of the two inner soil pressing rings 31 are fixedly provided with two left-right symmetrical connecting frames 32, and the end surfaces of the connecting frames 32 away from the axes of the soil pressing rings 31 are slidably provided with L-shaped blocks 33 up and down, and the L-shaped blocks 33 are fixedly connected to the adjacent soil pressing rings 31 on their outer sides, that is, the L-shaped block 33 corresponding to the innermost soil pressing ring 31 is fixedly connected to the middle soil pressing ring 31, and the L-shaped block 33 corresponding to the middle soil pressing ring 31 is fixedly connected to the outermost soil pressing ring 31.

[0036] like Figure 1 , Figure 3 and Figure 5 As shown, the ground pressing unit 3 also includes a fixing ring 34, and the fixing ring 34 is fixedly sleeved on the pressure column 30. Two front-to-back symmetrical support frames 340 are fixedly arranged on the fixing ring 34. The support frames 340 are fixedly connected to the corresponding soil pressing ring 31, and the support frames 340 on the two left-right symmetrical pressure columns 30 are left-right symmetrical.

[0037] During operation, when the three soil pressing rings 31 are performing the soil pressing action, the innermost soil pressing ring 31 performs the soil pressing action first, followed by the middle soil pressing ring 31, and finally the outermost soil pressing ring 31 performs the soil pressing action. In the above process, the cooperation between the L-shaped block 33 and the corresponding connecting frame 32 guides the direction of the soil pressing ring 31 to move up and down, ensuring that the soil pressing ring 31 evenly applies force to the soil surface, and a stable triangular frame is formed through the fixing ring 34 and the corresponding supporting frame 340 thereon, that is, there are two left and right triangular frames on the same soil pressing ring 31, which ensures the stability of the soil pressing ring 31 during the soil pressing process, and at the same time, the force transmitted from the pressure column 30 is evenly applied to the corresponding soil pressing ring 31, so that the soil pressing ring 31 applies uniform pressure during the soil pressing process.

[0038] like Figure 3 , Figure 4 and Figure 5 As shown, the end surface of the support frame 340 facing the axis of the soil pressing ring 31 is fixedly provided with a guide block 35, and the four guide blocks 35 on the same soil pressing ring 31 are circumferentially distributed about the axis of the soil pressing ring 31, and the end surface of the guide block 35 away from the support frame 340 is movably provided with a steel ball 350.

[0039] During operation, in the process of hoisting and moving the steel pipe pile 5, after the lower end of the steel pipe pile 5 passes through the middle area of ​​the soil pressing ring 31, the steel balls 350 on the guide blocks 35 are all tightly attached to the steel pipe pile 5, and the hoisting and placement process of the steel pipe pile 5 is guided by the circumferential cooperation between all the guide blocks 35. Secondly, in the subsequent downward movement of the steel pipe pile 5 for piling, the soil pressing ring 31 and the guide blocks 35 are in a stationary state. At this time, the guide blocks 35 guide the downward movement of the steel pipe pile 5. In the process of the soil pressing ring 31 moving downward to compact the soil, the downward movement and compaction process of the soil pressing ring 31 is guided by the cooperation between the guide blocks 35 and the steel pipe pile 5. In summary, the excessive tilt of the steel pipe pile 5 during piling affects the reinforcement effect, and the deviation of the soil pressing direction of the soil pressing ring 31 causes uneven soil force.

[0040] In the above process, the steel ball 350 is provided to directly contact the steel pipe pile 5 instead of the guide block 35 , thereby reducing the wear of the guide block 35 during the driving process of the steel pipe pile 5 .

[0041] like Figure 3 As shown, a horizontal frame 36 is rotatably sleeved on the pressure pile 40 , and all the pressure columns 30 slide up and down through the horizontal frame 36 .

[0042] During operation, as the pressure pile 40 moves downward to drive the pile, the pressure pile 40 drives the horizontal frame 36 to move synchronously. During this process, the horizontal frame 36, the pressure column 30, the frame 1 and all the soil pressure rings 31 together form a plurality of rectangular frames, thereby improving the stability of the pressure pile 40 in the process of transmitting the force, that is, improving the stability of the pile driving reinforcement process.

[0043] like Figure 1 , Figure 2 and Figure 6 As shown, the reinforcement mechanism 4 also includes a force-bearing block 41, and a plurality of block groups equidistantly distributed from top to bottom are fixedly arranged on the pressure pile 40, each block group includes two mutually symmetrical force-bearing blocks 41, and the projections of the force-bearing blocks 41 in adjacent block groups in the vertical direction are staggered by ninety degrees, and the portion of the lower end surface of the force-bearing block 41 away from the pressure pile 40 is chamfered, and through grooves 410 are opened through the frame 1 and the mounting plate 401.

[0044] like Figure 1 and Figure 6As shown, the conversion group 42 includes a bidirectional threaded rod 420, and the upper end surface of the mounting plate 401 is rotatably provided with a bidirectional threaded rod 420 whose axis extends from left to right, and an L-shaped plate 421 is fixedly provided on the sliding block 403, and the bidirectional threaded rod 420 penetrates the L-shaped plate 421 and is threadedly matched with the L-shaped plate 421, and the bidirectional threaded rod 420 is connected to an external motor (not shown in the figure).

[0045] In the initial state, the static pressure block 405 is located above the lowest force-bearing block 41, and then the external hydraulic equipment works to drive the static pressure plate 402 to move downward, and the static pressure plate 402 drives the static pressure block 405 to move downward synchronously, and the static pressure block 405 presses down the force-bearing block 41, so that the pressure pile 40 presses down the steel pipe pile 5, completing the first round of piling action, and the external hydraulic equipment resets, so that the static pressure block 405 moves up and resets, and then the external motor works to drive the bidirectional threaded rod 420 to rotate synchronously, so that the two L-shaped plates 421 drive the corresponding sliding blocks 403 to move away synchronously, and the sliding blocks 403 move to the top of the three pressure columns 30 on the same side in turn, and then repeat the above-mentioned piling action, and transmit the force to the pressure column 30, and start the soil compacting operation from the innermost pressure column 30, and then the external motor works to make the L-shaped block 33 drive the sliding block 403 to reset, so that the static pressure block 405 is located above the second group of force-bearing blocks 41 from bottom to top, so as to carry out the second round of piling action and soil compacting action.

[0046] like Figure 8 As shown, the rear end surface of the mounting plate 401 slides back and forth and is penetrated by two groups of left-right symmetrical column groups, the column group includes four locking columns 422 with axes extending from front to back, three of which correspond one to one with the three pressure columns 30 on the same side, and the remaining one locking column 422 corresponds to the pressure pile 40, and the rear end surfaces of all the locking columns 422 are commonly fixed with a moving plate 423, and the moving plate 423 is driven by an external hydraulic cylinder to move forward and backward, and the rear end surface of the sliding block 403 is provided with a locking groove 424 cooperating with the locking column 422, and the front end surface of the locking column 422 is chamfered.

[0047] When the locking column 422 is in the locked position, the locking column 422 is in the locked position, and the locking column 422 is in the locked position, so that the first round of pile pressing is carried out.

[0048] like Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the reinforcement mechanism 4 also includes a transverse plate 425, and the front end surface of the mounting plate 401 is provided with a transverse plate 425 for sliding left and right. The transverse plate 425 is fixedly connected to the right L-shaped plate 421 through a connecting piece, and a push rod 426 for sliding up and down is installed on the transverse plate 425. The lower end of the push rod 426 is rotatably connected to the pressure plate 400 through a connecting bar, and a U-shaped push plate 427 is fixedly provided on the upper end surface of the push rod 426, and the opening of the push plate 427 faces the rear side, and the push plate 427 slides up and down and is penetrated by a push bar 428, and the push bar 428 is a right-angled trapezoidal section, and the inclined surface of the push bar 428 faces the left side and tilts to the right from top to bottom, and a cross bar 429 is fixedly sleeved on the pressure pile 40, and the cross bar 429 corresponds to the opening height of the push plate 427.

[0049] When the piling operation is performed through the above-mentioned piling action, the static pressure block 405 drives the corresponding force block 41 to move downward synchronously, and then the external hydraulic cylinder works to make the static pressure block 405 move up and reset. In this process, since the force block 41 adjacent to the above-mentioned force block 41 is facing forward and backward, the upward reset process of the static pressure block 405 can be avoided. Then the external motor works to make the two sliding blocks 403 move away from each other. During the right sliding block 403 moves to the right, the sliding block 403 drives the push rod 426 and the push plate 426 through the connecting bar. 27 and the push bar 428 move right synchronously, the right end face of the push bar 428 contacts the front longitudinal section of the cross bar 429, and pushes the cross bar 429 to rotate. It should be noted that the rear end face of the push bar 428 contacts the left transverse section of the cross bar 429, and the rear end face of the push bar 428 is parallel to the front end face of the transverse section of the cross bar 429, that is, the push bar 428 continues to move right, causing the cross bar 429 to rotate ninety degrees. Therefore, at this time, the force blocks 41 on the pressure pile 40 are all rotated ninety degrees, which is convenient for the next round of piling operation.

[0050] Afterwards, as the sliding block 403 moves, the soil compacting operation is carried out through the piling action. When this round of piling and soil compacting is completed, the external motor works to reverse the bidirectional threaded rod 420, and the sliding block 403 is reset. The right sliding block 403 drives the push plate 427 and the push bar 428 to move left and reset. During the left movement, the inclined surface on the push bar 428 contacts the front lateral section of the cross bar 429, and the push bar 428 moves up to avoid the cross bar 429. The front lateral section of the cross bar 429 passes through the U-shaped area of ​​the push plate 427. Finally, the cross bar 429 moves to the left side of the front longitudinal section of the cross bar 429, and the push bar 428 moves down and resets under the action of its own gravity.

[0051] like Figure 1-Figure 8 As shown, in addition, the present invention also provides a highway foundation reinforcement construction method, including the following steps: S1, placing the pile body: moving the frame 1 to the foundation area to be reinforced by the mobile device 2, and making the three soil pressing rings 31 located at the designated reinforcement position, and then hoisting the steel pipe pile 5 to the bottom of the frame 1 by the external lifting equipment, so that the lower end surface of the steel pipe pile 5 is located at the center position of the soil pressing ring 31, and at this time, multiple guide blocks 35 cooperate with each other to limit and guide the direction of the steel pipe pile 5 and the subsequent piling direction.

[0052] S2. Pressing into the pile body: the external hydraulic equipment works, the static pressure plate 402 drives the static pressure block 405 to move downward synchronously, and the force is transmitted to the steel pipe pile 5 through the pressure pile 40, completing the first round of piling action.

[0053] S3, soil compacting operation: the external hydraulic equipment is reset, so that the static pressure block 405 moves up and resets, and then the external motor works to drive the bidirectional threaded rod 420 to rotate synchronously, so that the two L-shaped plates 421 drive the corresponding sliding blocks 403 to move away synchronously, and the sliding blocks 403 move to the top of the three pressure columns 30 on the same side in turn, and then the above-mentioned pressing action is repeated, and the force is transmitted to the pressure columns 30, and the soil compacting operation is started from the innermost pressure column 30.

[0054] S4, repeating the operation: the external hydraulic equipment drives the static pressure block 405 to move upward and reset, and repeats the above operation to perform multiple rounds of piling and soil compacting to complete the piling process of the single steel pipe pile 5.

[0055] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A highway foundation reinforcement device, characterized in that: include: A frame (1), wherein the frame (1) is U-shaped and its opening faces upward, a mobile device (2) is fixedly arranged on the right side of the frame (1), and a ground pressing unit (3) and a reinforcement mechanism (4) are arranged on the frame (1); The ground pressing unit (3) comprises a pressure column (30), and the horizontal section of the frame (1) is slidably arranged with two groups of left-right symmetrical column groups, each of which comprises three pressure columns (30) arranged equidistantly from left to right and with vertical axes, and the lower end surfaces of two left-right symmetrical pressure columns (30) in different column groups are fixedly provided with a soil pressing ring (31), the number of the soil pressing rings (31) is three, and the three soil pressing rings (31) are distributed in the shape of concentric circles; The reinforcement mechanism (4) comprises a pressure pile (40), a pressure pile (40) with a vertical axis is installed at the center position of the horizontal section of the frame (1) and slides up and down, and is penetrated by the pressure pile (40), a pressure plate (400) is fixedly arranged on the lower end surface of the pressure pile (40), a mounting plate (401) is fixedly arranged between the two vertical sections of the frame (1), a static pressure plate (402) is installed on the upper end surface of the mounting plate (401) and slides up and down, a left-right symmetrical sliding block (403) is arranged on the mounting plate (401) and slides left and right, a transmission column (404) that slides up and down is penetrated by the sliding block (403), and the transmission column (404) is slidably arranged on the lower end surface of the static pressure plate (402), a static pressure block (405) is fixedly arranged on the lower end surface of the transmission column (404), and a conversion group (42) is arranged on the mounting plate (401), and the operation of the conversion group (42) causes the static pressure block (405) to change the static pressure object.

2. A highway foundation reinforcement device according to claim 1, characterized in that: The ground pressing unit (3) further comprises a connecting frame (32), the upper end surfaces of the two inner soil pressing rings (31) are both fixedly provided with two left-right symmetrical connecting frames (32), the end surfaces of the connecting frames (32) away from the axis of the soil pressing ring (31) are both slidably provided with L-shaped blocks (33) up and down, and the L-shaped blocks (33) are fixedly connected to the adjacent soil pressing rings (31) on the outer side thereof.

3. A highway foundation reinforcement device according to claim 1, characterized in that: The ground pressing unit (3) further comprises a fixing ring (34), the fixing ring (34) being fixedly sleeved on the pressure column (30), two front-to-back symmetrical support frames (340) being fixedly arranged on the fixing ring (34), the support frames (340) being fixedly connected to the corresponding soil pressing ring (31), and the support frames (340) on the two left-right symmetrical pressure columns (30) being left-right symmetrical.

4. A highway foundation reinforcement device according to claim 3, characterized in that: The end surface of the support frame (340) facing the axis of the soil pressing ring (31) is fixedly provided with a guide block (35); the four guide blocks (35) on the same soil pressing ring (31) are circumferentially distributed about the axis of the soil pressing ring (31); and the end surface of the guide block (35) away from the support frame (340) is movably provided with a steel ball (350).

5. The highway foundation reinforcement device according to claim 1, characterized in that: A horizontal frame (36) is rotatably sleeved on the pressure pile (40), and all the pressure columns (30) slide up and down and penetrate the horizontal frame (36).

6. A highway foundation reinforcement device according to claim 1, characterized in that: The reinforcement mechanism (4) also includes a force-bearing block (41), and a plurality of groups of blocks are fixedly arranged on the pressure pile (40) and are evenly spaced from top to bottom. The block group includes two mutually symmetrical force-bearing blocks (41), and the portion of the lower end surface of the force-bearing block (41) away from the pressure pile (40) is chamfered. A through groove (410) is provided through the frame (1) and the mounting plate (401).

7. The highway foundation reinforcement device according to claim 1, characterized in that: The conversion group (42) comprises a bidirectional threaded rod (420), the upper end surface of the mounting plate (401) is rotatably provided with a bidirectional threaded rod (420) whose axis extends from left to right, an L-shaped plate (421) is fixedly provided on the sliding block (403), and the bidirectional threaded rod (420) penetrates the L-shaped plate (421) and is threadably matched with the L-shaped plate (421).

8. The highway foundation reinforcement device according to claim 1, characterized in that: The rear end face of the mounting plate (401) slides back and forth and is penetrated by two groups of left-right symmetrical column groups, the column group includes four locking columns (422) with axes extending from front to back, three of which correspond one to one with the three pressure columns (30) on the same side, and the remaining one locking column (422) corresponds to the pressure pile (40), the rear end faces of all the locking columns (422) are commonly fixed with a moving plate (423), the rear end face of the sliding block (403) is provided with a locking groove (424) cooperating with the locking column (422), and the front end face of the locking column (422) is chamfered.

9. The highway foundation reinforcement device according to claim 7, characterized in that: The reinforcement mechanism (4) also includes a transverse plate (425), the front end surface of the mounting plate (401) is provided with a transverse plate (425) for sliding left and right, the transverse plate (425) is fixedly connected to the right L-shaped plate (421) through a connecting piece, a push rod (426) for sliding up and down is installed through the transverse plate (425), the lower end of the push rod (426) is rotatably connected to the pressure plate (400) through a connecting strip, a U-shaped push plate (427) is fixedly provided on the upper end surface of the push rod (426), the opening of the push plate (427 faces the rear side, and a push bar (428) is passed through the push plate (427) for sliding up and down, the push bar (428) is a right-angled trapezoidal section, the inclined surface of the push bar (428) faces the left side and is inclined to the right from top to bottom, and a cross bar (429) is fixedly sleeved on the pressure pile (40).

10. A highway foundation reinforcement construction method, which is completed by using a highway foundation reinforcement device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Placing the pile body: moving the frame (1) to the foundation area to be reinforced, and making the three soil pressure rings (31) located at the designated reinforcement position, hoisting and moving the steel pipe pile (5) to the bottom of the frame (1), making the lower end surface of the steel pipe pile (5) located at the center position of the soil pressure ring (31), at this time all the guide blocks (35) cooperate with each other to limit and guide the direction of the steel pipe pile (5) and the subsequent piling direction; S2, pressing into the pile body: the static pressure plate (402) drives the static pressure block (405) to move downward synchronously, and the force is transmitted to the steel pipe pile (5) through the pressure pile (40), completing the first round of piling action; S3, soil compaction operation: the static pressure block (405) is moved upward and reset, and the sliding block (403) is moved to the top of the three pressure columns (30) on the same side in sequence, and then the above-mentioned pressure action is repeated, and the force is transmitted to the pressure columns (30), and the soil compaction operation is started from the innermost pressure column (30); S4, repeating the operation: the static pressure block (405) moves upward and resets, and repeats the above operation to perform multiple rounds of pile driving and soil compaction to complete the pile driving process of a single steel pipe pile (5).

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