Mixed pile group differential settlement regulation and control device

Abstract

The invention relates to the technical field of pile group settlement regulation and control, in particular to a mixed pile group differential settlement regulation and control device, new piles are inserted among a plurality of old piles, the new piles and the old piles form a new and old mixed pile foundation, and the mixed pile group differential settlement regulation and control device specifically comprises an old pile leveling system and a control system, the lateral anti-displacement devices are arranged on the pile sides of the old piles; and the new pile leveling system is arranged on the pile side and the pile bottom of the new pile and used for adjusting the vertical displacement of the new pile and providing lateral support for the new pile. Compared with the prior art, non-uniform settlement of the new and old mixed pile group and inclination of the pile group during settlement can be effectively prevented, and the influence of deformation of soil around the piles on settlement of adjacent pile foundations during settlement is prevented. And compared with re-piling or re-pulling piles, manpower, material resources and financial resources consumed by re-piling or re-pulling the piles are greatly reduced. Compared with the prior art, the device has the advantages of simple structure configuration, convenience in construction and installation, remarkable differential settlement regulation and control effect, low manufacturing cost and the like.

Description

Technical Field

[0001] This invention relates to the field of pile group settlement control technology, and in particular to a device for controlling uneven settlement of mixed old and new pile groups. Background Technology

[0002] In the field of pile group settlement control, traditional methods have long dominated. These methods include: first, controlling the quality of pile foundation construction to reduce settlement by improving construction precision and quality; second, reinforcing the soil around the piles to increase bearing capacity and reduce the risk of uneven settlement; and third, using combinations of different pile types, such as short and long piles, to balance settlement and ensure balanced bearing capacity. However, while these traditional methods can improve the settlement problem of pile group foundations to some extent, they still have limitations, leading to slow project progress and significantly increased time and economic costs. Due to the promotion of green, circular, and low-carbon development, mixed pile groups consisting of existing piles and newly penetrated piles are emerging in the field of pile foundations. The construction of new piles causes significant disturbance to the surrounding soil, resulting in a large difference in bearing characteristics between new and old piles. This can easily lead to unreasonable load sharing and inconsistent deformation between the new and old piles. Excessive differential deformation can cause cracking or even damage to the pile cap, leading to serious engineering accidents. Therefore, a device is needed to reasonably regulate the differential settlement between new and old piles. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the current construction of mixed pile groups and to provide a new device for regulating uneven settlement of old and new mixed pile groups.

[0004] The objective of this invention can be achieved through the following technical solutions: A mixed pile group uneven settlement control device, wherein the mixed pile group consists of new piles inserted between four old piles, forming a mixed pile foundation of new and old piles. The uneven settlement control device includes: The old pile leveling system includes a settlement adjustment device installed on the top of each old pile and a lateral anti-displacement device installed on the side of each old pile. The new pile leveling system is installed on the side and bottom of the new pile to adjust the vertical displacement of the new pile and provide lateral support for the new pile.

[0005] As a preferred technical solution, the settlement adjustment device in the old pile leveling system includes: a control main board, a battery, a motor, a rotating cutter head, bolts, springs, a telescopic rod, a load plate, a protective sleeve, and a base; The base is fixed to the ground around the old pile. The protective sleeve is fitted onto the top of the old pile and fixedly connected to the base. The top of the protective sleeve is fixedly connected to the lower end of the support rod, and the upper end of the support rod is fixedly connected to the frame. The motor is fixedly connected to the frame via a bracket. The battery is installed inside the frame to provide power to the motor. The battery and motor are respectively connected to the control motherboard. The output end of the motor drives the rotating cutter head, which is fixedly connected to the top of the bolt. The bottom of the bolt is connected to the telescopic rod through a fixed support. The two ends of the spring are connected to the telescopic rod through screws. One side of the load plate is fixedly connected to the telescopic rod, and the other side is fixedly connected to the top of the old pile.

[0006] As a preferred technical solution, the settlement adjustment device also includes a wireless settlement controller, which sends control signals to the control board of each old pile respectively; When the motor drives the bolt downward through the rotating cutter head, the spring is compressed, thereby causing the load plate fixed to the top of the old pile to bear the downward axial load. When the motor drives the bolt to rotate upward through the rotating cutter head, the spring is stretched, thereby causing the load plate fixed to the top of the old pile to bear the upward axial load.

[0007] As a preferred technical solution, the lateral displacement prevention device includes a lateral displacement prevention machine, a hydraulic rod, a hydraulic rod fixing support, an electric throttle valve, an electric push rod, a throttle valve controller, an electric hydraulic press, an oil pump, a hydraulic pipe, and a power cord. The anti-lateral displacement machine is installed on the side of the old pile. Inside the machine is a hydraulic rod that extends and retracts horizontally, facing the old pile and fixed to its outer surface via a hydraulic rod fixing seat. An electric throttle valve is installed at the oil inlet of the anti-lateral displacement machine, connected to both a hydraulic pipe and a throttle valve controller. Hydraulic oil is supplied to the anti-lateral displacement machine by an electric hydraulic press through an oil pump, hydraulic pipe, and throttle valve controller. The throttle valve controller is connected to the electric throttle valve via a power cord. The throttle valve controller uses the throttle valve control button to control the extension and retraction of the electric push rod in the electric throttle valve, which drives the slider to move, controls the hydraulic oil delivery, and thus controls the extension and retraction of the hydraulic rod in the anti-lateral displacement machine.

[0008] As a preferred technical solution, the electric hydraulic press is equipped with a hydraulic gauge to monitor the hydraulic pressure, and an electric hydraulic press switch to control the operation of the electric hydraulic press.

[0009] As a preferred technical solution, the new pile leveling system includes an air supply pipe, a telescopic piston, a piston controller, a flexible reinforcing bladder, and an electric inflation port. The flexible reinforcement bladder is installed on the side and bottom of the new pile, and an inflation hole is provided on the flexible reinforcement bladder; an air supply pipe connected to the inflation hole is provided inside the new pile, and gas is supplied into the flexible reinforcement bladder through the inflation hole. Each inflation port of the flexible reinforced bladder is equipped with a matching electric telescopic piston. The electric telescopic piston is connected to a piston controller via a power line. The piston controller controls the movement of the electric telescopic piston to control the gas delivery volume and thus adjust the degree of expansion of the flexible reinforced bladder.

[0010] As a preferred technical solution, the flexible reinforced capsule is provided with a telescopic support inside for supporting the flexible reinforced capsule.

[0011] As a preferred technical solution, after the new pile settles and stabilizes, a curing agent is delivered into the flexible reinforcement bladder through a gas pipeline to solidify and shape the local area of ​​the new pile.

[0012] As a preferred technical solution, strain gauges are installed on the side of the new pile, and the strain gauges are connected to a displacement analysis system via data lines. The displacement analysis system collects data and analyzes the vertical and lateral displacements of the new pile.

[0013] As a preferred technical solution, the uneven settlement control device further includes a differential displacement meter, which is installed on the top of the new pile and the old pile to collect the settlement value of the top of the new pile and the old pile.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1) The uneven settlement control device proposed in this invention combines electric control with traditional mechanical settlement control. Through the coordinated action of a motor, spring, and load plate, the settlement of old piles is adjusted. Through the coordinated action of a flexible reinforcement capsule, telescopic support, electric telescopic piston, piston controller, air supply pipe, inflation port, strain gauge, data line, and displacement analysis system, the settlement of new piles is adjusted. This achieves the control of differential settlement between old and new mixed pile groups.

[0015] 2) This invention also utilizes an electric hydraulic press, hydraulic pipes, an electric throttle valve, a throttle valve controller, an electric push rod, a hydraulic rod, and a hydraulic rod fixing support to work in concert to prevent horizontal displacement of adjacent pile foundations caused by soil deformation around the old piles during settlement. This device can achieve differential settlement control for different pile diameters, different pile lengths, and different combinations of new and old mixed pile groups, with high settlement control efficiency and effectively prevents uneven settlement caused by the new piles forming a pile foundation with the old piles after installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the working principle of a novel mixed-type pile uneven settlement control device of the present invention.

[0017] Figure 2 This is a three-dimensional schematic diagram of the overall structure and appearance of the uneven settlement control device for old piles in this invention.

[0018] Figure 3 This is a three-dimensional schematic diagram of the overall structure and appearance of the uneven settlement control device for new piles in this invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the flexible reinforced capsule in this invention.

[0020] The diagram shows the following components: 1 New pile, 2 Old pile, 3 Wireless settlement controller, 4 Wireless settlement control button, 5 Control motherboard, 6 Battery, 7 Frame, 8 Support rod, 9 Bracket, 10 Motor, 11 Rotary cutter head, 12 Bolt, 13 Fixed support, 14 Screw, 15 Spring, 16 Telescopic rod, 17 Load plate, 18 Protective sleeve, 19 Base, 20 Anti-lateral displacement machine, 21 Hydraulic rod, 22 Hydraulic rod fixing seat, 23 Electric throttle valve, 24 Electric push rod, 25 Slider, 26 Throttle valve controller, 27 Throttle valve control button, 28 Electric hydraulic press, 29 Hydraulic gauge, 30 Electric hydraulic press switch, 31 Oil pump, 32 Hydraulic pipe, 33 Power cord, 34 Air supply pipe, 35 Electric telescopic piston, 36 Piston controller, 37 Flexible reinforcement bladder, 38 Telescopic bracket, 39 40. Inflation port, 41. Strain gauge, 42. Displacement analysis system, 43. Data cable, 44. Differential displacement meter. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0022] Example 1 This invention proposes a device for controlling uneven settlement of a mixed old and new pile group. The soil around the four old piles 2 has undergone long-term consolidation and rheological changes and is in a relatively stable state. A new penetrating pile 1 is located in the middle. After the new pile 1 is installed, it will form a mixed old and new pile foundation with the four old piles 2. Figure 1As shown, the control device proposed in this invention specifically includes a new pile 1, an old pile 2, a wireless settlement controller 3, a wireless settlement control button 4, a control motherboard 5, a battery 6, a frame 7, a support rod 8, a bracket 9, a motor 10, a rotating cutter head 11, a bolt 12, a fixed support 13, a screw 14, a spring 15, a telescopic rod 16, a load plate 17, a protective sleeve 18, a base 19, an anti-lateral displacement machine 20, a hydraulic rod 21, a hydraulic rod fixing seat 22, an electric throttle valve 23, an electric push rod 24, a slider 25, a throttle valve controller 26, a throttle valve control button 27, an electric hydraulic press 28, a hydraulic gauge 29, an electric hydraulic press switch 30, an oil pump 31, a hydraulic pipe 32, a power cord 33, an air supply pipe 34, an electric telescopic piston 35, a piston controller 36, a flexible reinforcement bladder 37, a telescopic bracket 38, an inflation hole 39, a strain gauge 40, a displacement analysis system 41, a data cable 42, and a differential displacement meter 43.

[0023] like Figure 2 The diagram shows a three-dimensional structural appearance of the uneven settlement control device for old piles. The old pile leveling system mainly includes a motor 10, a battery 6, a rotating cutter head 11, bolts 12, a telescopic rod 16, a spring 15, a load plate 17, a wireless settlement controller 3, a control main board 5, an electric hydraulic press 28, hydraulic pipes 32, an oil pump 31, an electric throttle valve 23, a throttle valve controller 26, an electric push rod 24, a power cord 33, an anti-lateral displacement machine 20, a hydraulic rod 21, and a hydraulic rod fixing support 22.

[0024] Each of the old piles 2 has a base 19 installed on the ground around it. A protective sleeve 18 is fitted onto the top of the old pile 2 and fixedly connected to the base 19, protecting the old pile 2, spring 15, telescopic rod 16, and load plate 17, and providing a support carrier for the motor 10. The motor 10 is fixedly connected to the frame 7 via a bracket 9. The frame 7 is fixedly connected to the upper end of the support rod 8, and the lower end of the support rod 8 is fixedly connected to the top of the protective sleeve 18. The output end of the motor faces the old pile 2 and is fixedly connected to one end of the rotating cutter head 11. The other end of the rotating cutter head 11 is fixedly connected to the top of the bolt 12. The bottom of the bolt 12 is connected to the telescopic rod 16 via a fixed support 13. The upper end of the telescopic rod 16 is connected to the bolt 12 via the fixed support 13, and the lower end of the telescopic rod 16 is fixedly connected to the load plate 17, which is fixedly connected to the top of the old pile 2. A spring 15 is fitted onto the outer surface of the telescopic rod 16, and both ends of the spring 15 are fixedly connected to the telescopic rod 16 via screws 14. Battery 6 and motor 10 are connected to the control mainboard 5, with battery 6 providing power to motor 10. The wireless settlement controller 3 sends signals to the control mainboard 5 for each of the four existing piles, controlling motor 10 to drive the rotating cutter head 11, causing bolt 12 to move up and down. This, in turn, stretches or contracts the spring 15 located at the other end of bolt 12, the telescopic rod 16, and the spring 15 fitted onto the telescopic rod 16. When motor 10 drives the rotating cutter head 11 to rotate bolt 12 upwards, it stretches spring 15, causing load plate 17 to bear an upward axial load, controlling the existing pile 3 to move upwards. When motor 10 drives the rotating cutter head to rotate bolt 12 downwards, it compresses spring 15, causing load plate 17 to bear a downward axial load, controlling the existing pile 2 to move downwards.

[0025] The anti-lateral displacement machine 20 is installed on the side of the old pile 2, and contains a horizontally extending hydraulic rod 21. The hydraulic rod 21 faces the old pile 2 and is fixed to the outer surface of the old pile 2 through a hydraulic rod fixing seat 22. The anti-lateral displacement machine 20 is supplied with hydraulic oil by an electric hydraulic press 28 through an oil pump 31 and a hydraulic pipe 32. The electric hydraulic press 28 is equipped with a hydraulic gauge 29 to monitor the hydraulic pressure, and an electric hydraulic press switch 30 to control the operation of the electric hydraulic press. An electric throttle valve 23 is installed at the oil inlet of the anti-lateral displacement machine 20. The electric throttle valve 23 is connected to the hydraulic pipe 32 and a throttle valve controller 26. The throttle valve controller 26 is connected to the electric throttle valve 23 through a power line 33. The electric push rod 24 in the electric throttle valve 23 is extended and retracted by the throttle valve control button 27, which drives the slider 25 to move, controlling the hydraulic oil supply and thus precisely controlling the extension and retraction of the hydraulic rod 21 in the anti-lateral displacement machine 20. To prevent the tilting caused by the settlement of old piles and the impact of soil deformation around the piles on adjacent pile foundations.

[0026] Figure 3 and Figure 4This is a three-dimensional structural diagram of a novel pile uneven settlement control device and a schematic diagram of the internal structure of a flexible reinforcing bladder. The novel pile leveling system includes a flexible reinforcing bladder 37, a telescopic support 38, an electric telescopic piston 35, a piston controller 36, an air supply pipe 34, an air filling hole 39, a strain gauge 40, a data cable 42, and a displacement analysis system 41.

[0027] Flexible reinforcing bladders 37 are respectively installed on the sides and bottom of the new pile. Each flexible reinforcing bladder 37 has a built-in telescopic support 38 and an inflation port 39. Gas is supplied to the inflation port 39 through a gas supply pipe 34 installed inside the new pile 1, causing the flexible reinforcing bladders 37 on the sides and bottom of the new pile 1 to expand. The telescopic support 38 supports the flexible reinforcing bladders 37. An electric telescopic piston 35 is installed at each inflation port 39 on the side and bottom of the flexible reinforcing bladder. The electric telescopic piston 35 is connected to a piston controller 36 via a power line 33. The piston controller 36 controls the movement of the electric telescopic piston 35, thereby controlling the gas supply and adjusting the degree of expansion of the flexible reinforcing bladder 37. The expansion of the flexible reinforcing bladder 37 at the bottom of the pile provides vertical support to the pile bottom, causing vertical displacement of the new pile 1. The expansion of the flexible reinforcing bladder 37 on the sides of the pile provides lateral support, achieving precise settlement adjustment of the new pile. After the new pile 1 has settled and stabilized, a curing agent is delivered into the flexible reinforcing capsule 37 through the gas supply pipe 34 to solidify and shape the local area of ​​the new pile 1. Strain gauges 40 are installed on the side of the new pile 1. The strain gauges 40 are connected to the displacement analysis system 41 through the data line 42. The displacement analysis system 41 collects data and analyzes the vertical and lateral displacements of the new pile.

[0028] Differential displacement gauges 43 are fixedly installed on the top of the old piles 2 and the new piles 1 respectively, for real-time monitoring of the settlement of the pile tops of the four old piles 2 and one new pile 1.

[0029] Unlike traditional pile group leveling methods, this invention provides a new type of mixed old and new pile group uneven settlement control device that combines traditional mechanical control with electric control. Firstly, a wireless settlement controller sends signals to the control board, controlling the battery to provide power to the motor. The motor drives the bolts to rotate up and down, which in turn drives the spring to extend and retract, causing the load plate to bear force, thereby controlling the settlement of the four old piles and improving the flexibility and efficiency of the pile group. Secondly, an electric hydraulic press delivers hydraulic oil to the anti-tilting fixing device through an oil pump and hydraulic pipes. An electric throttle valve is connected to both the hydraulic pipes and the throttle valve controller. The throttle valve controller controls the extension and retraction of the electric push rod in the electric throttle valve, driving the slider to move and controlling the hydraulic oil delivery volume, precisely controlling the extension and retraction of the hydraulic rod. Thirdly, a flexible reinforcement bladder with built-in telescopic supports and inflation holes delivers gas through an air supply pipe to the inflation holes. The flexible reinforcement bladder on the pile side and bottom expands, supported by the telescopic supports. Electric telescopic pistons are installed at the inflation holes of the flexible reinforcement bladder on the pile side and bottom to control the gas delivery volume. The expansion of the flexible reinforcement capsule at the pile bottom provides vertical support to the pile bottom, while the expansion of the flexible reinforcement capsule on the pile side provides lateral support, enabling precise and gradual settlement adjustment of the new pile.

[0030] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A mixed pile group uneven settlement control device, wherein the mixed pile group consists of a new pile (1) inserted between multiple old piles (2), forming a new and old mixed pile foundation composed of the new pile (1) and multiple old piles (2), characterized in that, The uneven settlement control device includes: The old pile leveling system includes a settlement adjustment device installed on the top of each old pile (2) and a lateral anti-displacement device installed on the side of each old pile (2). The new pile leveling system is set on the side and bottom of the new pile (1) to adjust the vertical displacement of the new pile (1) and provide lateral support for the new pile (1).

2. The hybrid pile group uneven settlement control device according to claim 1, characterized in that, The settlement adjustment device in the old pile leveling system includes: a control main board (5), a battery (6), a motor (10), a rotating cutter head (11), a bolt (12), a spring (15), a telescopic rod (16), a load plate (17), a protective sleeve (18), and a base (19). The base (19) is fixed to the ground around the old pile (2), and the protective sleeve (18) is fitted onto the top of the old pile (2) and fixedly connected to the base (19); the top of the protective sleeve (18) is fixedly connected to the lower end of the support rod (8), and the upper end of the support rod (8) is fixedly connected to the frame (7); the motor (10) is fixedly connected to the frame (7) through the bracket (9); the battery (6) is installed inside the frame (7) to provide power to the motor (10), and the battery (6) and the motor (10) are respectively connected to the control motherboard (5). The output end of the motor (10) drives the rotating cutter head (11), the rotating cutter head (11) is fixedly connected to the top of the bolt (12), and the bottom of the bolt (12) is connected to the telescopic rod (16) through the fixed support (13); the two ends of the spring (12) are connected to the telescopic rod (16) through screws (14), one side of the load plate (17) is fixedly connected to the telescopic rod (16), and the other side is fixedly connected to the top of the old pile (2).

3. The mixed pile group uneven settlement control device according to claim 2, characterized in that, The settlement adjustment device also includes a wireless settlement controller (3), which sends control signals to the control motherboard (5) of each old pile (2); When the motor (10) drives the bolt (12) to rotate downward through the rotating cutter head (11), the spring (15) will compress, thereby causing the load plate (17) fixed on the top of the old pile to bear the downward axial load. When the motor (10) drives the bolt (12) to rotate upward by rotating the cutter head (11), the spring (15) is stretched, so that the load plate (17) fixed on the top of the old pile bears the upward axial load.

4. The mixed pile group uneven settlement control device according to claim 1, characterized in that, When the lateral displacement prevention device includes a lateral displacement prevention machine (20), a hydraulic rod (21), a hydraulic rod fixing support (22), an electric throttle valve (23), an electric push rod (24), a throttle valve controller (26), an electric hydraulic press (28), an oil pump (31), a hydraulic pipe (32), and a power cord (33); The anti-lateral displacement machine (20) is installed on the side of the old pile (2). The anti-lateral displacement machine (20) is equipped with a hydraulic rod (21) that extends and retracts in the horizontal direction. The hydraulic rod (21) faces the old pile (2) and is connected and fixed to the outer surface of the old pile (2) through the hydraulic rod fixing seat (22). An electric throttle valve (23) is installed at the oil inlet of the anti-lateral displacement machine (20). The electric throttle valve (23) is connected to the hydraulic pipe (32) and the throttle valve controller (26) respectively. The electric hydraulic press (28) delivers hydraulic oil to the anti-lateral displacement machine (20) through the oil pump (31), hydraulic pipe (32) and throttle valve controller (26). The throttle valve controller (26) is connected to the electric throttle valve (23) via a power line (33). The throttle valve controller (26) uses the throttle valve control button (27) to control the extension and retraction of the electric push rod (24) in the electric throttle valve (23), which drives the slider (25) to move, controls the hydraulic oil delivery volume, and then controls the extension and retraction of the hydraulic rod (21) in the anti-lateral displacement machine (20).

5. The mixed pile group uneven settlement control device according to claim 4, characterized in that, The electric hydraulic press (28) is equipped with a hydraulic gauge (29) to monitor the hydraulic pressure, and an electric hydraulic press switch (30) to control the operation of the electric hydraulic press.

6. The mixed pile group uneven settlement control device according to claim 1, characterized in that, The new pile leveling system includes an air supply pipe (34), a telescopic piston (35), a piston controller (36), a flexible reinforcing bladder (37), and an electric inflation port (39). The flexible reinforcement bladder (37) is set on the side and bottom of the new pile, and an inflation hole (39) is provided on the flexible reinforcement bladder (37); an air supply pipe (34) connected to the inflation hole (39) is provided inside the new pile (1), and gas is supplied to the flexible reinforcement bladder (37) through the inflation hole (39); Each inflation hole (39) of the flexible reinforced bladder (37) is provided with a matching electric telescopic piston (35). The electric telescopic piston (35) is connected to the piston controller (36) via a power line (33). The piston controller (36) controls the movement of the electric telescopic piston (35) to control the gas delivery and thus adjust the degree of expansion of the flexible reinforced bladder (37).

7. The hybrid pile group uneven settlement control device according to claim 6, characterized in that, The flexible reinforced capsule (37) is provided with a telescopic bracket (38) inside for supporting the flexible reinforced capsule (37).

8. The mixed pile group uneven settlement control device according to claim 6, characterized in that, After the new pile (1) settles and stabilizes, a curing agent is delivered into the flexible reinforcing bladder (37) through the gas supply pipe (34) to solidify and shape the local area of ​​the new pile (1).

9. The mixed pile group uneven settlement control device according to claim 6, characterized in that, The new pile (1) is provided with strain gauges (40) on the side of the pile. The strain gauges (40) are connected to the displacement analysis system (41) via data lines (42). The displacement analysis system (41) collects data and analyzes the vertical and lateral displacements of the new pile.

10. The mixed pile group uneven settlement control device according to claim 1, characterized in that, The uneven settlement control device also includes a differential displacement meter (43), which is installed on the top of the new pile (1) and the old pile (2) to collect the settlement value of the top of the new pile (1) and the old pile (2).

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