An integrated pile foundation detection device

Abstract

The application discloses an integrated pile foundation detection device and belongs to the technical field of pile foundation detection.The integrated pile foundation detection device comprises a support pier, a base and a pile foundation, a main beam is arranged on the support pier, and a through jack is installed at the top center of the main beam.The present application applies force to the sleeve pipe through the guard plate to form directional force against the pull rod, so that the pull rod returns to the balanced state, and the eccentricity and inclination of the pile foundation detection device are corrected, when the pile foundation and the pull rod are restored to be stable and the pulling force on the pull rod is uniform and not inclined, the processing module controls the driving component to stop working and drives the execution component to return to the original position, so that the eccentricity of the pulling force in the pile foundation detection process does not affect the pile foundation detection, and the pressure when the detection guard plate of the anti-eccentricity mechanism is pushed is detected through the cooperation between the guard plate and the pressure sensor, and timely correction is performed, so that the influence of the excessive pushing force of the guard plate on the eccentricity correction is prevented.

Description

Technical Field

[0001] This invention relates to the field of pile foundation testing technology, and in particular to an integrated pile foundation testing device. Background Technology

[0002] A deep foundation consisting of piles and a pile cap connecting the pile tops, or a single-pile foundation connecting a column and piles, is simply called a pile foundation. If the entire pile is embedded in the soil and the bottom of the pile cap is in contact with the soil, it is called a low-pile-cap pile foundation; if the upper part of the pile is exposed above the ground and the bottom of the pile cap is above the ground, it is called a high-pile-cap pile foundation. Building pile foundations are usually low-pile-cap pile foundations. Pile foundations are widely used in high-rise buildings.

[0003] A search revealed Chinese patent CN213476972U, which discloses a static load testing device for pile foundations. The device includes a pull-out rod, a connecting sleeve, a testing beam, a supporting pile, jacks, and a reaction beam. The connecting sleeve is positioned at the top of the pile to be tested. After the bottom of the pull-out rod is connected to the connecting sleeve, the top of the pull-out rod passes through the testing beam and is fixed to the reaction beam. Two jacks are located at the bottom of the reaction beam, on either side of the pull-out rod, and are fixed to the testing beam, which is supported by the supporting pile. The bottom of the pull-out rod is threaded to the connecting sleeve. A horizontal fixing rod is used to increase the connection strength between the connecting rod and the pile, thus achieving the required load-bearing range for testing. Static load testing can be performed by threading the inner wall of the pull-out rod's connecting groove to the outer wall of the connecting sleeve. The operation is simple.

[0004] However, this technology still has the following problems: In the vertical pull-out test of a single pile, the vertical pull-out force needs to be applied to the pile foundation in stages or cyclically. When the jack is applied, the supporting pile may sink due to the reaction force, causing the pull-out rod to deflect. Alternatively, different geological conditions may cause uneven friction between the pile foundation and the soil, potentially resulting in an angular deviation between the pile foundation and the pull-out rod, affecting the vertical pull-out force of the pile foundation and thus the accuracy of the pile foundation test results. Therefore, an integrated pile foundation testing device with anti-eccentricity function is proposed to avoid eccentric tilting of the pull-out force on the pile foundation during the vertical pull-out test. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an integrated pile foundation testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An integrated pile foundation testing device includes a support pier, a base, and a pile foundation. A main beam is provided on the support pier, and a through-hole jack is installed at the top center of the main beam. An anti-pull-out tie rod is passed through the through-hole jack, and an anti-eccentricity mechanism is provided on the anti-pull-out tie rod.

[0008] Preferably, two support piers are symmetrically arranged, and the two ends of the main beam are respectively symmetrically fixed to the top of the two support piers. The pull rod passes through the main beam and is connected to the main beam with a clearance fit. A pile foundation connector is installed on the pile foundation, and the bottom of the pull rod is connected to the pile foundation connector. The through-hole jack works and drives the pull rod to lift the pile foundation connector upward, thereby detecting the vertical pull bearing capacity of the pile foundation.

[0009] Preferably, there are two symmetrically arranged bases, each with a sleeve and two connecting plates. The two connecting plates are symmetrically connected to the top of the base, and the sleeve is installed on the top of the two connecting plates. The base increases the contact area between the connecting plates and the ground, ensuring the stability of the connecting plates and the sleeve.

[0010] Preferably, the anti-eccentricity mechanism includes a sleeve, a connecting ring, and four anti-eccentricity components, which are symmetrically connected to the outer wall of the connecting ring; the four anti-eccentricity components can be used to correct the pull rod when it tilts in different directions.

[0011] Preferably, the sleeve has a hollow chamber inside, and four rectangular through holes are symmetrically opened on the outer wall of the sleeve. A processing module and an anti-deviation detection module are installed on the top inner wall of the sleeve chamber. The processing module and the anti-deviation detection module are located above the anti-deviation component. When the anti-deviation detection module detects that the anti-pull-out rod is tilted and eccentric, it transmits a signal to the processing module. The processing module then activates the drive component to correct the tilt of the anti-pull-out rod.

[0012] Preferably, the anti-eccentricity component includes a driving component and an actuating component. The driving component includes four guard plates. The driving component is used to drive the actuating component to correct the eccentricity, so as to ensure that the pull-out tie rod works vertically during the pile foundation testing process.

[0013] Preferably, the actuating components include an engine and a hydraulic pump. The top of the anti-eccentric component is provided with a rotating structure, and the bottom of the anti-eccentric component has an upward-facing mounting groove. The engine and hydraulic pump are installed inside the mounting groove. The bottom of the anti-eccentric component is provided with an L-shaped plate, and the L-shaped plate is provided with a plunger and a protective folding ring. The processing module controls the engine to work and drives the hydraulic pump to push the plunger forward, thereby pushing the protective plate out of the rectangular through hole, thus completing the skew correction work.

[0014] Preferably, the engine and the hydraulic pump are connected by a coupling. The output end of the hydraulic pump passes through the L-shaped plate and is connected to the plunger. A connecting block is connected to the end of the plunger. A pressure sensor is installed on the side of the connecting block away from the plunger. The protective folding ring passes through the outer wall of the plunger and is adapted to the plunger. The rear side of the L-shaped plate is connected to the connecting ring by bolts. The protective folding ring is an elastic telescopic component. When the plunger is pushed out, the protective folding ring expands and contracts accordingly to protect the plunger and prevent dust from entering the plunger.

[0015] Preferably, the four guard plates are arranged one-to-one with the four anti-eccentric components. The top of the guard plate is rotatably connected to the rotating structure. The guard plate is adapted to the anti-eccentric component. The rear side of the guard plate is connected to the side of the connecting block where a pressure sensor is provided. The pressure sensor is in contact with the guard plate. When the plunger pushes against the guard plate, the pressure sensor provided between the guard plate and the connecting block enables the anti-eccentric mechanism to detect the pressure when the guard plate pushes against it and make timely corrections to prevent the excessive pushing force of the guard plate from affecting the eccentricity correction.

[0016] Preferably, the anti-eccentricity component and the protective plate are located inside the cavity of the sleeve. The sleeve is adapted to both the anti-eccentricity component and the protective plate. The protective plate corresponds to the position of the rectangular through hole. The connecting ring passes through the outer wall of the pull-out rod and is interference-fitted with the pull-out rod. The anti-eccentricity mechanism is located between the main beam and the pile foundation connector. The inner diameter of the sleeve is larger than the outer diameter of the sleeve. The anti-eccentricity mechanism passes through the sleeve and is adapted to the sleeve. When the pull-out rod tilts, the protective plate in the corresponding direction is pushed out and abuts against the inner wall of the sleeve, thereby completing the tilt correction work. The sleeve and the anti-eccentricity mechanism are highly aligned.

[0017] Compared with the prior art, the present invention provides an integrated pile foundation testing device, which has the following advantages:

[0018] (1) The present invention applies force to the sleeve through the protective plate to form a directional force against the pull rod, thereby returning the pull rod to the equilibrium state, and thus completing the correction of the eccentricity and tilt of the pile foundation detection device.

[0019] (2) When the pile foundation and the pull rod are restored to stability and the pull rod has uniform tension without deviation, the anti-deviation detection module transmits the signal to the processing module. The processing module controls the drive component to stop working and drives the execution component to return to its position, so as to avoid the execution component affecting the pull rod tension. Intelligent detection avoids the pull force eccentricity affecting the pile foundation detection process.

[0020] (3) The present invention uses the cooperation between the guard plate and the pressure sensor to enable the anti-eccentric mechanism to detect the pressure when the guard plate is pushed and correct it in time, so as to prevent the excessive pushing force of the guard plate from affecting the eccentric correction. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the overall anti-eccentricity mechanism of this invention.

[0024] Figure 3 This is a schematic diagram of the anti-eccentricity mechanism of this invention, showing the ejection of one side guard plate.

[0025] Figure 4 This is a schematic diagram of the sleeve using the new type of invention.

[0026] Figure 5 This is a cross-sectional view of the novel anti-eccentricity mechanism.

[0027] Figure 6 This is a schematic diagram of the anti-eccentricity component of this invention.

[0028] Figure 7 This is an exploded view of the novel anti-eccentricity mechanism used in this invention.

[0029] Figure 8 This is a top view of the explosion-proof anti-eccentricity mechanism used in this invention.

[0030] The labels in the diagram represent: 1. Support pier; 2. Main beam; 3. Through-hole jack; 4. Pull-out rod; 5. Pile foundation connector; 6. Pile foundation; 7. Base; 8. Connecting plate; 9. Sleeve; 10. Anti-eccentricity mechanism; 11. Sleeve; 12. Rectangular through hole; 13. Processing module; 14. Anti-eccentricity detection module; 15. Anti-eccentricity component; 16. Rotating structure; 17. Protective plate; 18. Connecting ring; 19. Engine; 20. Hydraulic pump; 21. L-shaped plate; 22. Piston; 23. Protective folding ring; 24. Connecting block; 25. Pressure sensor; 26. Mounting slot. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Please see Figure 1-8 In this embodiment of the invention, an integrated pile foundation testing device includes a support pier 1, a base 7 and a pile foundation 6. A main beam 2 is provided on the support pier 1, and a through-hole jack 3 is installed at the top center of the main beam 2. An anti-pull-out rod 4 passes through the through-hole jack 3, and an anti-eccentricity mechanism 10 is provided on the anti-pull-out rod 4.

[0034] Among them, reference Figure 1 Two symmetrical support piers 1 are arranged. The two ends of the main beam 2 are symmetrically fixed to the top of the two support piers 1 respectively. The pull rod 4 passes through the main beam 2 and is connected to the main beam 2 with a clearance fit. The pile foundation 6 is equipped with a pile foundation connector 5. The bottom of the pull rod 4 is connected to the pile foundation connector 5. The through jack 3 works and drives the pull rod 4 to lift the pile foundation connector 5 upward, thereby testing the vertical pull bearing capacity of the pile foundation 6.

[0035] Among them, reference Figure 1 There are two symmetrically arranged bases 7. Each base 7 is equipped with a sleeve 9 and two connecting plates 8. The two connecting plates 8 are symmetrically connected to the top of the base 7, and the sleeve 9 is installed on the top of the two connecting plates 8. The base 7 increases the contact area between the connecting plates 8 and the ground, ensuring the stability of the connecting plates 8 and the sleeve 9.

[0036] Among them, reference Figure 2-5 The anti-eccentricity mechanism 10 includes a sleeve 11, a connecting ring 18, and four anti-eccentricity components 15. The four anti-eccentricity components 15 are symmetrically connected to the outer wall of the connecting ring 18. The four anti-eccentricity components 15 can be used to correct the pull rod 4 when it tilts in different directions.

[0037] Among them, reference Figure 4 The sleeve 11 has a hollow chamber inside, and four rectangular through holes 12 are symmetrically opened on the outer wall of the sleeve 11. The processing module 13 and the anti-deviation detection module 14 are installed on the top inner wall of the sleeve 11 chamber. The processing module 13 and the anti-deviation detection module 14 are located above the anti-deviation component 15. When the anti-deviation detection module 14 detects that the anti-pull-out rod 4 is tilted and eccentric, it transmits a signal to the processing module 13. The processing module 13 starts the drive component to correct the tilt of the anti-pull-out rod.

[0038] Among them, reference Figure 6The anti-eccentric component 15 includes a driving component and an execution component. The driving component includes four guard plates 17. The driving component is used to drive the execution component to correct the eccentricity, so as to ensure that the pull-out tie rod 4 works vertically during the pile foundation testing process.

[0039] Among them, reference Figure 7-8 The actuators include an engine 19 and a hydraulic pump 20. The top of the anti-eccentric component 15 is provided with a rotating structure 16, and the bottom of the anti-eccentric component 15 is provided with an upward-facing mounting groove 26. The engine 19 and the hydraulic pump 20 are installed inside the mounting groove 26. The bottom of the anti-eccentric component 15 is provided with an L-shaped plate 21, on which a plunger 22 and a protective folding ring 23 are provided. The processing module 13 controls the engine 19 to work and drives the hydraulic pump 20 to push the plunger 22 forward, thereby pushing the guard plate 17 out of the rectangular through hole 12, thus completing the skew correction work.

[0040] Among them, 7-8, refer to Figure 1 The engine 19 and the hydraulic pump 20 are connected by a coupling. The output end of the hydraulic pump 20 passes through the L-shaped plate 21 and is connected to the plunger 22. The end of the plunger 22 is connected to a connecting block 24. A pressure sensor 25 is installed on the side of the connecting block 24 away from the plunger 22. A protective folding ring 23 passes through the outer wall of the plunger 22 and is adapted to the plunger 22. The rear side of the L-shaped plate is connected to the connecting ring 18 by bolts. The protective folding ring 23 is an elastic telescopic component. When the plunger 22 is pushed out, the protective folding ring 23 expands and contracts accordingly to protect the plunger 22 and prevent dust from entering the plunger 22.

[0041] Among them, reference Figure 7-8 Four guard plates 17 are correspondingly set with four anti-eccentric components 15. The top of the guard plate 17 is rotatably connected to the rotating structure 16. The guard plate 17 is adapted to the anti-eccentric component 15. The rear side of the guard plate 17 is connected to the side of the connecting block 24 where the pressure sensor 25 is located. The pressure sensor 25 is in contact with the guard plate 17. When the plunger 22 pushes against the guard plate 17, the pressure sensor 25 set between the guard plate 17 and the connecting block 24 enables the anti-eccentric mechanism 10 to detect the pressure when the guard plate 17 pushes against it and correct it in time, so as to prevent the excessive pushing force of the guard plate 17 from affecting the eccentricity correction.

[0042] Among them, reference Figure 1The anti-eccentric component 15 and the protective plate 17 are located inside the cavity of the sleeve 11. The sleeve 11 is compatible with both the anti-eccentric component 15 and the protective plate 17. The protective plate 17 corresponds to the rectangular through hole 12. The connecting ring 18 passes through the outer wall of the pull-out rod 4 and is interference-fitted with the pull-out rod 4. The anti-eccentric mechanism 10 is located between the main beam 2 and the pile foundation connector 5. The inner diameter of the sleeve 9 is larger than the outer diameter of the sleeve 11. The anti-eccentric mechanism 10 passes through the sleeve 9 and is compatible with the sleeve 9. When the pull-out rod 4 tilts, the protective plate 17 in the corresponding direction is pushed out and abuts against the inner wall of the sleeve 9, thereby completing the work of correction. The sleeve 9 and the anti-eccentric mechanism 10 are highly compatible.

[0043] The working principle of this invention is as follows: During use, when the through-hole jack 3 is working, if the pile foundation 6 or the pull-out rod 4 is tilted eccentrically due to geological or other factors, the anti-eccentricity detection module 14 installed on the inner wall of the sleeve 11 detects the tilt and transmits the signal to the processing module 13. The processing module 13 starts the drive component, controls the engine 19 inside the mounting groove 26 to work, and drives the hydraulic pump 20 to push the plunger 22 forward. This causes the plunger 22 to push the guard plate 17 corresponding to the tilt direction out of the rectangular through hole 12. The guard plate 17 in the corresponding direction is pushed out and abuts against the inner wall of the sleeve 9. The guard plate 17 applies force to the sleeve 9 to form a directional force against the pull-out rod 4, thereby... The pull rod 4 returns to a balanced state, thus completing the work of correcting the tilt of the pull rod 4. When the pile foundation 6 and the pull rod 4 return to stability and the pull force on the pull rod 4 is uniform and not eccentric, the anti-eccentricity detection module 14 transmits the signal to the processing module 13. The processing module 13 controls the drive component to stop working and drives the execution component to return to its position, so as to avoid the execution component affecting the pull force of the pull rod 4. Intelligent detection avoids the eccentricity of the pull force during the pile foundation detection process from affecting the pile foundation detection. Through the cooperation between the guard plate 17 and the pressure sensor 25, the anti-eccentricity mechanism 10 detects the pressure when the guard plate 17 is pushed and corrects it in time, preventing the excessive pushing force of the guard plate 17 from affecting the eccentricity correction.

[0044] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated pile foundation testing device, characterized in that, It includes a support pier (1), a base (7) and a pile foundation (6). A main beam (2) is provided on the support pier (1). A through-hole jack (3) is installed at the top center of the main beam (2). An anti-pull-out tie rod (4) is passed through the through-hole jack (3). An anti-eccentricity mechanism (10) is provided on the anti-pull-out tie rod (4). Two bases (7) are symmetrically arranged. A sleeve (9) and two connecting plates (8) are provided on the base (7). The two connecting plates (8) are symmetrically connected to the top of the base (7). The sleeve (9) is installed on the top of the two connecting plates (8). The anti-eccentricity mechanism (10) includes a sleeve (11), a connecting ring (18), and four anti-eccentricity components (15). The four anti-eccentricity components (15) are symmetrically connected to the outer wall of the connecting ring (18). The sleeve (11) has a hollow cavity inside, and four rectangular through holes (12) are symmetrically opened on the outer wall of the sleeve (11). The top inner wall of the sleeve (11) is equipped with a processing module (13) and an anti-eccentricity detection module (14). The anti-eccentric component (15) includes a driving component and an actuating component. The driving component includes four protective plates (17), and the actuating component includes an engine (19) and a hydraulic pump (20). A rotating structure (16) is provided on the top of the anti-eccentric component (15), and an mounting groove (26) is provided on the bottom of the anti-eccentric component (15). The engine (19) and the hydraulic pump (20) are installed inside the mounting groove (26). An L-shaped plate (21) is provided on the bottom of the anti-eccentric component (15). The L-shaped plate (21) is provided with a plunger (22) and a protective folding ring (23); the anti-eccentric component (15) and the protective plate (17) are located inside the cavity of the sleeve (11), the sleeve (11) is adapted to the anti-eccentric component (15) and the protective plate (17), the protective plate (17) corresponds to the rectangular through hole (12), the inner diameter of the sleeve (9) is larger than the outer diameter of the sleeve (11), the anti-eccentric mechanism (10) passes through the sleeve (9), and the anti-eccentric mechanism (10) is adapted to the sleeve (9).

2. The integrated pile foundation testing device according to claim 1, characterized in that, Two support piers (1) are symmetrically arranged. The two ends of the main beam (2) are respectively symmetrically fixed to the top of the two support piers (1). The pull rod (4) passes through the main beam (2) and is connected to the main beam (2) with a gap fit. A pile foundation connector (5) is installed on the pile foundation (6). The bottom of the pull rod (4) is connected to the pile foundation connector (5).

3. The integrated pile foundation testing device according to claim 1, characterized in that, The engine (19) and the hydraulic pump (20) are connected by a coupling. The output end of the hydraulic pump (20) passes through the L-shaped plate (21) and is connected to the plunger (22). The end of the plunger (22) is connected to a connecting block (24). A pressure sensor (25) is installed on the side of the connecting block (24) away from the plunger (22). The protective folding ring (23) passes through the outer wall of the plunger (22) and is adapted to the plunger (22).

4. The integrated pile foundation testing device according to claim 3, characterized in that, The four guard plates (17) are arranged one-to-one with the four anti-eccentric components (15). The top of the guard plate (17) is rotatably connected to the rotating structure (16). The guard plate (17) is adapted to the anti-eccentric component (15). The rear side of the guard plate (17) is connected to the side of the connecting block (24) where the pressure sensor (25) is located. The pressure sensor (25) is in contact with the guard plate (17).

5. The integrated pile foundation testing device according to claim 1, characterized in that, The connecting ring (18) passes through the outer wall of the pull-out rod (4), and the connecting ring (18) is interference-fitted with the pull-out rod (4). The anti-eccentricity mechanism (10) is located between the main beam (2) and the pile foundation connector (5).

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