Static load testing device for pile foundation

Abstract

The utility model discloses a pile foundation static load testing device, and particularly relates to the technical field of static load testing equipment. The pile foundation static load testing device comprises a bottom plate and a first supporting plate, the upper surface of the bottom plate is provided with the first supporting plate, the outer wall of the first supporting plate is fixedly connected with a second supporting plate, the bottom of the second supporting plate is fixedly connected with hydraulic rods, the hydraulic rods are annularly distributed, and the hydraulic rods are fixedly connected with the bottom of the first supporting plate. Hydraulic rods are fixedly connected to the upper surface of the first supporting plate, rubber pads are fixedly connected to the bottoms of the hydraulic rods, weight boxes are fixedly connected to the upper surface of the second supporting plate, the number of the weight boxes is four, the weight boxes are annularly distributed, and feeding ports are formed in the upper surfaces of the weight boxes. And under the supporting of the hydraulic rod, the device is kept at a horizontal position, so that the device is more stable, the inclination phenomenon caused by unstable stress on the upper part of the device is avoided, and the personal safety of workers during operation is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of static load testing equipment, in particular to a static load testing device for pile foundations. Background Technique

[0002] It is a technology used in engineering to detect the bearing capacity of pile foundations. In determining single piles, it is the most accurate and reliable inspection method. Whether a certain dynamic load inspection method is mature is based on the results of static load tests. Therefore, each design and treatment specification places the single-pile static load test in the primary position.

[0003] For example, a static load testing device for pile foundations proposed in Chinese Patent CN215442055U, which relates to the technical field of static load testing equipment, improves the problem that in the prior art, most methods use stacking to test pile foundations, but during the stacking process, deviations are likely to occur, resulting in uneven stress on the upper part of the pile foundation, and cracks or fractures may occur on one side, ultimately reducing the test efficiency. It includes a soil layer, in which a pile foundation body is poured. Positioning sleeves are buried in the soil layer around the pile foundation body. A bearing plate is arranged above the pile foundation body. A jack is arranged above the bearing plate. A column is connected above the jack. A main beam is horizontally connected above the column. Secondary beams are connected below both sides of the main beam. The bottoms of the secondary beams are all connected with a bottom plate. In this application, under the action of the jack, the upper structure is supported to counterweight the pile foundation, and deviations can be avoided during the test, improving the test efficiency.

[0004] Based on the retrieval of the prior art, although the above solution solves the problem of counterweighting the pile foundation by the upper support structure, thus avoiding deviations during the test, there is still a problem that the uneven surface of the foundation pile causes the equipment to tilt, posing a safety hazard to the personal safety of the staff during operation. Content of the Utility Model

[0005] The purpose of the utility model is to provide a static load testing device for pile foundations to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A static load testing device for pile foundations, including a bottom plate and a first support plate. A first support plate is arranged on the upper surface of the bottom plate. The outer wall of the first support plate is fixedly connected with a second support plate. The bottom of the second support plate is fixedly connected with hydraulic rods. There are multiple groups of hydraulic rods and they are distributed annularly. The bottom of the hydraulic rods is fixedly connected with rubber pads. The upper surface of the second support plate is fixedly connected with counterweight boxes. There are four groups of counterweight boxes and they are distributed annularly. The upper surface of the counterweight boxes is provided with feed inlets. Through the mutual cooperation of the hydraulic rods and the rubber pads, the device is made more stable.

[0007] As a preferred technical solution of the present utility model, a first groove is formed on the upper surface of the first support plate. A secondary beam is fixedly connected to the upper surface of the first support plate. There are four groups of secondary beams and they are annularly distributed. A main beam is fixedly connected to the upper surface of the secondary beam. A column is fixedly connected to the lower surface of the main beam, which increases the load-bearing effect of the device.

[0008] As a preferred technical solution of the present utility model, a jack is arranged on the lower surface of the column. A bearing plate is arranged on the lower surface of the jack. A pile foundation body is arranged on the lower surface of the bearing plate, and the jack will press against the bearing plate.

[0009] As a preferred technical solution of the present utility model, a second groove is formed on the upper surface of the bottom plate. A sliding groove is formed on the upper surface of the bottom plate. There are multiple groups of sliding grooves and they are annularly distributed. A buffer spring is fixedly connected to the bottom of the sliding groove. A buffer block is fixedly connected to the upper surface of the buffer spring, and the device is buffered conveniently by setting the buffer spring and the sliding groove.

[0010] As a preferred technical solution of the present utility model, a sliding sleeve is fixedly connected to the bottom of the sliding groove. There are multiple groups of sliding sleeves and they are annularly distributed. An adjusting rod is slidably connected inside the sliding sleeve, and the adjusting rod slides on the inner wall of the sliding sleeve.

[0011] As a preferred technical solution of the present utility model, a buffer block is fixedly connected to the upper surface of the adjusting rod. There are multiple groups of buffer blocks and they are annularly distributed. The buffer blocks are attached to the inner wall of the sliding groove, reducing the shaking of the device.

[0012] As a preferred technical solution of the present utility model, a support rod is fixedly connected to the lower surface of the first support plate. There are multiple groups of support rods and they are annularly distributed. The support rods are attached to the inner wall of the sliding groove, and the support rods slide inside the sliding groove.

[0013] Compared with the prior art, the present utility model provides a pile foundation static load test device, which has the following beneficial effects;

[0014] 1. By setting hydraulic rods in the present utility model, the support plate can be driven to adjust the angle through the work of multiple hydraulic rods. Under the support of the hydraulic rods, the device is kept in a horizontal position, making the device more stable and not prone to tilting due to unstable force above, ensuring the personal safety of the staff during operation;

[0015] 2. By setting support rods in the present utility model, the bottom plate arranged at the bottom is extruded by multiple support rods, increasing the contact area between the bottom plate and the ground, thereby ensuring the stability and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1Schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 Schematic diagram of the bottom view structure of the present utility model;

[0018] Figure 3 Schematic diagram of the bottom plate structure of the present utility model;

[0019] Figure 4 Schematic diagram of the column structure of the present utility model;

[0020] Figure 5 For the present utility model Figure 3 Enlarged view of part A in

[0021] In the figure: 1, bottom plate; 2, first support plate; 3, second support plate; 4, hydraulic rod; 5, rubber pad; 6, counterweight box; 7, feeding port; 8, support rod; 9, sliding groove; 10, first adjusting rod; 11, second adjusting rod; 12, buffer block; 13, buffer spring; 14, first groove; 15, second groove; 16, secondary beam; 17, main beam; 18, column; 19, jack; 20, bearing plate; 21, pile foundation body. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5, the present utility model provides a technical solution: a static load testing device for pile foundations, including a bottom plate 1 and a first support plate 2. The upper surface of the bottom plate 1 is provided with the first support plate 2. The outer wall of the first support plate 2 is fixedly connected with a second support plate 3. The bottom of the second support plate 3 is fixedly connected with a hydraulic rod 4. A plurality of hydraulic rods 4 are arranged and distributed in a ring. The bottom of the hydraulic rod 4 is fixedly connected with a rubber pad 5. The upper surface of the second support plate 3 is fixedly connected with a counterweight box 6. Four counterweight boxes 6 are arranged and distributed in a ring. The upper surface of the counterweight box 6 is provided with a feed inlet 7. Through the mutual cooperation of the hydraulic rod 4 and the rubber pad 5, the device is made more stable. A first groove 14 is opened on the upper surface of the first support plate 2. The upper surface of the first support plate 2 is fixedly connected with secondary beams 16. Four secondary beams 16 are arranged and distributed in a ring. The upper surface of the secondary beam 16 is fixedly connected with a main beam 17. The lower surface of the main beam 17 is fixedly connected with a column 18, which increases the load-bearing effect of the device. The lower surface of the column 18 is provided with a jack 19. The lower surface of the jack 19 is provided with a bearing plate 20. The lower surface of the bearing plate 20 is provided with a pile foundation body 21. The jack 19 presses against the bearing plate 20.

[0024] The implementation method is specifically as follows: Through the mutual cooperation of the provided hydraulic rod 4 and the rubber pad 5, multiple hydraulic rods 4 drive the rubber pad 5 to press down on the surface of the bottom plate 1, which can make the device more stable and not shake.

[0025] Please refer to Figures 1-5 , a second groove 15 is opened on the upper surface of the bottom plate 1. A sliding groove 9 is opened on the upper surface of the bottom plate 1. A plurality of sliding grooves 9 are arranged and distributed in a ring. The bottom of the sliding groove 9 is fixedly connected with a buffer spring 13. The upper surface of the buffer spring 13 is fixedly connected with a buffer block 12. By providing the buffer spring 13 and the sliding groove 9, it is convenient to buffer the device. The bottom of the sliding groove 9 is fixedly connected with a sliding sleeve 10. A plurality of sliding sleeves 10 are arranged and distributed in a ring. An adjusting rod 11 is slidably connected in the sliding sleeve 10. The adjusting rod 11 slides on the inner wall of the sliding sleeve 10. The upper surface of the adjusting rod 11 is fixedly connected with a buffer block 12. A plurality of buffer blocks 12 are arranged and distributed in a ring. The buffer block 12 fits against the inner wall of the sliding groove 9; The lower surface of the first support plate 2 is fixedly connected with a support rod 8. A plurality of support rods 8 are arranged and distributed in a ring. The support rod 8 fits against the inner wall of the sliding groove 9. The support rod 8 slides in the sliding groove 9.

[0026] The implementation method is specifically as follows: By changing the position of the sliding sleeve 10 on the adjusting rod 11, the sliding sleeve 10 can be pressed, increasing the buffer for the support rod 8, and making the device more stable when stressed under the action of the buffer spring 13.

[0027] Working principle: When the device needs to be used, first align the second groove 15 provided in the middle of the device with the pile base body 21. After alignment, place the bearing plate 20 on the pile base body 21. The setting of the bearing plate 20 can increase the contact area between the pile base body 21 and the jack 19. Place the jack 19 in the middle of the bearing plate 20, start the jack 19 and counterweight it according to the inclination degree of the device. Add soil materials from the feed port 7 into the counterweight box 6 to achieve the foundation stability of the device. Start multiple hydraulic rods 4 provided at the bottom of the second support plate 3. The hydraulic rods 4 drive the rubber pads 5 fixedly connected to the bottom to press down. When all the multiple hydraulic rods 4 provided are pressed against the upper surface of the bottom plate 1, the device will be completely stable. Test whether the corresponding pile foundation rebounds under each level of load by applying pressure on the main beam 17. When the test is over and the jack 19 stops working, the support rod 8 provided at the bottom of the first support plate 2 slides in the sliding groove 9 opened in the bottom plate 1. The support rod 8 will press against the buffer spring 13 provided at the bottom of the sliding groove 9. The buffer spring 13 drives the first adjusting rod 10 to contract back into the inner wall of the second adjusting rod 11, reducing the rebounding force and effectively preventing the damage caused by the impact force during descent to the device.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A static load test device for pile foundation, comprising a bottom plate (1) and a first support plate (2), characterized in that: The upper surface of the bottom plate (1) is provided with a first support plate (2). The outer wall of the first support plate (2) is fixedly connected to a second support plate (3). The bottom of the second support plate (3) is fixedly connected to a hydraulic rod (4). A plurality of the hydraulic rods (4) are provided and distributed annularly. The bottom of the hydraulic rod (4) is fixedly connected to a rubber pad (5). The upper surface of the second support plate (3) is fixedly connected to a counterweight box (6). Four groups of the counterweight boxes (6) are provided and distributed annularly. The upper surface of the counterweight box (6) is provided with a feed inlet (7).

2. The static load test device for pile foundation according to claim 1, characterized in that, The upper surface of the first support plate (2) is provided with a first groove (14). The upper surface of the first support plate (2) is fixedly connected to secondary beams (16). Four groups of the secondary beams (16) are provided and distributed annularly. The upper surface of the secondary beams (16) is fixedly connected to a main beam (17). The lower surface of the main beam (17) is fixedly connected to columns (18).

3. The static load testing device for pile foundation according to claim 2, characterized in that, The lower surface of the column (18) is provided with a jack (19). The lower surface of the jack (19) is provided with a bearing plate (20). The lower surface of the bearing plate (20) is provided with a pile foundation body (21).

4. A static load test device for pile foundations according to claim 1, characterized in that, The upper surface of the bottom plate (1) is provided with a second groove (15). The upper surface of the bottom plate (1) is provided with sliding grooves (9). A plurality of the sliding grooves (9) are provided and distributed annularly. The bottom of the sliding groove (9) is fixedly connected to a buffer spring (13). The upper surface of the buffer spring (13) is fixedly connected to a buffer block (12).

5. The static load testing device for pile foundation according to claim 4, characterized in that, The bottom of the sliding groove (9) is fixedly connected to a sliding sleeve (10). A plurality of the sliding sleeves (10) are provided and distributed annularly. An adjusting rod (11) is slidably connected in the sliding sleeve (10).

6. The static load test device for pile foundation according to claim 5, wherein, The upper surface of the adjusting rod (11) is fixedly connected to a buffer block (12). A plurality of the buffer blocks (12) are provided and distributed annularly. The buffer block (12) is in contact with the inner wall of the sliding groove (9).

7. A static load testing device for pile foundations according to claim 1, characterized in that, The lower surface of the first support plate (2) is fixedly connected to support rods (8). A plurality of the support rods (8) are provided and distributed annularly. The support rod (8) is in contact with the inner wall of the sliding groove (9).

Images