Encryption type load box for foundation pile self-balancing static load detection

Abstract

The utility model discloses an encryption type load box for foundation pile self-balancing static load detection, which comprises a load box main body, an upper connecting plate, a lower connecting plate and a hydraulic jacking piece, and the load box main body consists of the upper connecting plate, the lower connecting plate and the hydraulic jacking piece. According to the utility model, the load box main body is opened to form a gap, and the locking rod drives the second interlocking teeth to move upwards and pushes the inner sides of the first interlocking teeth to move upwards in the up-and-down displacement process at the moment; the first interlocking teeth automatically reset under the action of hinge joint and the spring telescopic column and lock the downward moving path of the second interlocking teeth, so that the second interlocking teeth can only move upwards in the single direction, namely, a supporting piece is formed under the interlocking action, and the requirement for the bearing capacity of a single pile is met; and in the grouting reinforcement process, multi-point auxiliary connection is formed through the locking rods and the locking seats, the continuity of the upper-section reinforcement cage and the lower-section reinforcement cage is improved, and the overall structural performance is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation detection, in particular to an encrypted load box used for self-balancing static load detection of pile foundations. Background Art

[0002] A load box is a loading and jacking device specifically designed for self-balancing (self-reaction) pile foundation testing. The self-balancing method involves pre-embedding a specialized loading device, the load box, within the pile. Prior to concrete pouring, it is embedded within the pile along with the reinforcement cage at the appropriate location (the specific location depends on the test objectives and conditions). The load box's pressurized pipe and other required testing equipment (displacement rods, protective tubes, strain gauges, etc.) are led from the pile body to the surface, and the pile is then cast. After reaching the resting age, a pressure pump applies pressure to the load box through pre-embedded pipes. This creates upward and downward forces within the load box, which are then transmitted to the pile. Because the pile generates its own reaction force, data equivalent to two static load tests are obtained: the reaction parameters of the upper pile body under reverse loading are obtained from the portion above the load box; the reaction parameters of the lower pile body under forward loading are obtained from the portion below the load box. By calculating and analyzing the relationship between loading force and parameters (displacement, stress, etc.), a series of data such as pile foundation bearing capacity, pile end bearing capacity, lateral friction resistance, and friction resistance conversion coefficient can be obtained.

[0003] Most load boxes are used once and are not returned. After the self-balancing static load test of the pile foundation is completed, the oil pressure of the load box is usually released, resulting in no pressure in the hydraulic oil inside the load box, thereby reducing the support for the upper end of the pile foundation and the bearing capacity of the single pile. There is a certain room for optimization. Therefore, it is necessary to design an encrypted load box for the self-balancing static load test of the pile foundation to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide an encrypted load box for self-balancing static load detection of foundation piles, so as to solve the problem of reduced bearing capacity of single piles proposed in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an encrypted load box for self-balancing static load detection of pile foundations, comprising a load box body, an upper connecting plate, a lower connecting plate, and a hydraulic jacking member, wherein the load box body is composed of the upper connecting plate, the lower connecting plate, and the hydraulic jacking member, the hydraulic jacking member is fixed to the top end of the lower connecting plate, and the upper connecting plate is fixed to the top end of the hydraulic jacking member;

[0006] The inner side of the upper connecting plate is evenly fixed with an upper connecting block, and the inner side of the lower connecting plate is evenly fixed with a lower connecting block, the top end of the lower connecting block is fixed with a locking seat by a fastening bolt, and a built-in groove is provided inside the locking seat, the interior of the built-in groove is movably connected with a locking rod, and the outer side of the locking rod is evenly fixed with a second interlocking tooth, both sides of the interior of the built-in groove are hinged with a first interlocking tooth, and the interior of the built-in groove below the first interlocking tooth is hinged with a spring telescopic column, the top end of the spring telescopic column is hinged with the bottom end of the first interlocking tooth, the top end of the locking rod is fixed with a connecting disk, and the top end of the connecting disk is in contact with the bottom end of the upper connecting plate.

[0007] Preferably, a sealing sleeve is fixed to the outer side of the locking rod, and the sealing sleeve is arranged on the outer side of the locking seat.

[0008] Preferably, guide blocks are fixed on both sides of the interior of the sealing sleeve, and guide grooves are provided on both sides of the locking seat, and the guide grooves are connected to the guide blocks.

[0009] Preferably, the width of the guide block matches the width of the guide groove, and the guide block and the guide groove are symmetrically arranged with respect to the central axis of the sealing sleeve.

[0010] Preferably, a connecting rod is evenly fixed to the top of the connecting plate, and the top of the connecting rod passes through the interior of the upper connecting block and is connected to a fastening nut.

[0011] Preferably, a reinforcement block is fixed to the bottom end of the locking seat, and a reinforcement groove matching the reinforcement block is provided at the top end of the lower connecting block.

[0012] Preferably, diversion channels are evenly arranged inside the reinforcement block, grouting channels are arranged on both sides of the locking seat, and the bottom ends of the grouting channels extend to the interior of the reinforcement block and communicate with the diversion channels.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the encrypted load box for pile foundation self-balancing static load detection realizes the functions of interlocking support and sealing reinforcement;

[0014] During the test, the oil pump is pressurized, and the load box body simultaneously moves upward and downward, and the load box body opens to form a gap. At this time, during the up and down displacement process, the locking rod drives the second interlocking tooth to move upward and pushes the inner side of the first interlocking tooth to move upward. When the second interlocking tooth moves above the first interlocking tooth, the first interlocking tooth automatically resets under the action of the hinge and the spring telescopic column and locks the downward movement path of the second interlocking tooth, so that the second interlocking tooth can only move upward in one direction, that is, a support member is formed under the interlocking action to meet the bearing capacity requirements of a single pile. In addition, during the grouting reinforcement process, a multi-point auxiliary connection is formed by the locking rod and the locking seat, which improves the continuity of the upper and lower sections of the steel cage and ensures the overall structural performance.

[0015] By arranging a sealing sleeve on the outside of the locking rod, the sealing sleeve covers the outside of the interface between the locking seat and the locking rod from top to bottom during use, thereby achieving the purpose of sealing the interface and reducing the infiltration of the locking seat during concrete pouring that affects the use of the interlocking components. Furthermore, the guide block and the guide groove can serve as a guide and limiter when the locking rod and the locking seat move up and down.

[0016] By providing reinforcement blocks and reinforcement grooves, it can serve the purpose of positioning when the locking seat is installed, and when pouring concrete to form piles, the grouting channel and the diversion channel can serve the purpose of auxiliary reinforcement of the connection, thereby enhancing the fixing effect of the locking seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the locking seat of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection disk of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the sealing sleeve of the utility model;

[0022] Figure 5 It is a schematic diagram of the internal three-dimensional structure of the locking seat of the utility model.

[0023] Explanation of the reference numerals in the figure: 1. Load box body; 2. Upper connecting plate; 3. Upper connecting block; 4. Lower connecting plate; 5. Lower connecting block; 6. Fastening bolt; 7. Hydraulic jacking member; 8. Locking seat; 9. Sealing sleeve; 10. Locking rod; 11. Fastening nut; 12. Connecting rod; 13. Grouting channel; 14. Reinforcement block; 15. Diversion channel; 16. Connecting plate; 17. Guide block; 18. Guide groove; 19. Built-in groove; 20. First interlocking tooth; 21. Spring telescopic column; 22. Second interlocking tooth. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the embodiments described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 5 , the utility model provides the following technical solutions: Example 1

[0026] In order to solve the problem of the existing technology that the single pile bearing capacity is relatively insufficient, the following solution is disclosed, specifically: Figure 1 、 Figure 4 and Figure 5 As shown, the encrypted load box for self-balancing static load detection of pile foundations provided by the present application includes a load box body 1, an upper connecting plate 2, a lower connecting plate 4 and a hydraulic jacking member 7. The load box body 1 is composed of an upper connecting plate 2, a lower connecting plate 4 and a hydraulic jacking member 7. The hydraulic jacking member 7 is fixed to the top of the lower connecting plate 4, and the upper connecting plate 2 is fixed to the top of the hydraulic jacking member 7. The upper connecting block 3 is evenly fixed on the inner side of the upper connecting plate 2, and the lower connecting block 5 is evenly fixed on the inner side of the lower connecting plate 4. The top of the lower connecting block 5 is fixed with a locking seat 8 by a fastening bolt 6, and the interior of the locking seat 8 is provided with a built-in groove 19, and the interior of the built-in groove 19 is movably connected with a locking rod 10, and the outer side of the locking rod 10 is fixed with a sealing sleeve 9, and the sealing sleeve 9 is sleeved on the locking seat 8 On the outside of the sealing sleeve 9, guide blocks 17 are fixed on both sides of the interior of the sealing sleeve 9, and guide grooves 18 are provided on both sides of the locking seat 8, and the guide grooves 18 are connected to the guide blocks 17. The width of the guide blocks 17 matches the width of the guide grooves 18. The guide blocks 17 and the guide grooves 18 are symmetrically arranged about the central axis of the sealing sleeve 9, and the outside of the locking rod 10 is evenly fixed with second interlocking teeth 22, and the inside of the built-in groove 19 is hinged with first interlocking teeth 20 on both sides, and the inside of the built-in groove 19 below the first interlocking tooth 20 is hinged with a spring telescopic column 21, and the top of the spring telescopic column 21 is hinged to the bottom end of the first interlocking tooth 20, and the top of the locking rod 10 is fixed with a connecting plate 16, and the top of the connecting plate 16 is in contact with the bottom end of the upper connecting plate 2.

[0027] In this embodiment, the load box body 1 is installed at the balance point of the pile body steel cage and is welded to the upper and lower steel cages through the upper connecting plate 2 and the lower connecting plate 4. After welding the reinforcing ribs, guide ribs and arranging the displacement tube, the steel cage is lowered, and then the guide tube is lowered to cast concrete to form a pile. During the test, the oil pump is pressurized, and the load box body 1 simultaneously moves upward and downward, and the load box body 1 opens to form a gap. At this time, during the up and down displacement process, the locking rod 10 drives the second interlocking tooth 22 to move upward and pushes the inner side of the first interlocking tooth 20 to move upward. When the second interlocking tooth 22 moves above the first interlocking tooth 20, the first interlocking tooth 20 automatically resets under the action of the hinge and spring telescopic column 21 and locks the downward movement path of the second interlocking tooth 22, so that the second interlocking tooth 22 can only move upward in one direction, that is, a support member is formed under the interlocking action to meet the bearing capacity requirements of a single pile, and a multi-point auxiliary connection is formed by the locking rod 10 and the locking seat 8 during the grouting reinforcement process to improve the continuity of the upper and lower sections of the steel cage and ensure the overall structural performance.

[0028] Example 2

[0029] This embodiment is different from the first embodiment in that the connection strength between the interlocking assembly and the load box is improved by reinforcing the structure. Figure 1 、 Figure 2 and Figure 3 As shown, a connecting rod 12 is evenly fixed to the top of the connecting plate 16, and the top of the connecting rod 12 passes through the interior of the upper connecting block 3 and is connected to a fastening nut 11, a reinforcement block 14 is fixed to the bottom end of the locking seat 8, and a reinforcement groove matching the reinforcement block 14 is provided at the top of the lower connecting block 5, and a diversion channel 15 is evenly provided inside the reinforcement block 14, and grouting channels 13 are provided on both sides of the interior of the locking seat 8, and the bottom end of the grouting channel 13 extends to the interior of the reinforcement block 14 and is connected to the diversion channel 15.

[0030] In this embodiment, by setting the reinforcement block 14 and the reinforcement groove during use, it can serve the purpose of positioning when the locking seat 8 is installed, and when pouring concrete to form a pile, the grouting channel 13 and the diversion channel 15 can serve the purpose of auxiliary reinforcement of the connection, thereby enhancing the fixing effect of the locking seat 8, and at the same time cooperate with the function of the connecting rod 12 and the fastening nut 11 to enhance the connection and fixing effect of the end.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An encrypted load box for pile foundation self-balancing static load detection, comprising a load box body (1), an upper connecting plate (2), a lower connecting plate (4) and a hydraulic jacking member (7), wherein the load box body (1) is composed of the upper connecting plate (2), the lower connecting plate (4) and the hydraulic jacking member (7), the hydraulic jacking member (7) is fixed to the top end of the lower connecting plate (4), and the upper connecting plate (2) is fixed to the top end of the hydraulic jacking member (7); Its characteristics are: An upper connecting block (3) is evenly fixed on the inner side of the upper connecting plate (2), and a lower connecting block (5) is evenly fixed on the inner side of the lower connecting plate (4). A locking seat (8) is fixed to the top end of the lower connecting block (5) by a fastening bolt (6), and a built-in groove (19) is provided inside the locking seat (8). The inside of the built-in groove (19) is movably connected to a locking rod (10), and a second interlocking tooth (22) is evenly fixed on the outer side of the locking rod (10). Both sides of the inside of the built-in groove (19) are hinged with a first interlocking tooth (20), and the inside of the built-in groove (19) below the first interlocking tooth (20) is hinged with a spring telescopic column (21), the top end of the spring telescopic column (21) is hinged with the bottom end of the first interlocking tooth (20), the top end of the locking rod (10) is fixed with a connecting disk (16), and the top end of the connecting disk (16) is in contact with the bottom end of the upper connecting plate (2).

2. The encrypted load box for pile foundation self-balancing static load detection according to claim 1, characterized in that: A sealing sleeve (9) is fixed to the outside of the locking rod (10), and the sealing sleeve (9) is sleeved on the outside of the locking seat (8).

3. The encrypted load box for pile foundation self-balancing static load detection according to claim 2, characterized in that: Guide blocks (17) are fixed on both sides of the interior of the sealing sleeve (9), and guide grooves (18) are provided on both sides of the locking seat (8), and the guide grooves (18) and the guide blocks (17) are connected.

4. The encrypted load box for pile foundation self-balancing static load detection according to claim 3, characterized in that: The width of the guide block (17) matches the width of the guide groove (18), and the guide block (17) and the guide groove (18) are symmetrically arranged with respect to the central axis of the sealing sleeve (9).

5. The encrypted load box for pile foundation self-balancing static load detection according to claim 1, characterized in that: The top end of the connecting plate (16) is evenly fixed with a connecting rod (12), and the top end of the connecting rod (12) passes through the interior of the upper connecting block (3) and is connected with a fastening nut (11).

6. The encrypted load box for pile foundation self-balancing static load detection according to claim 1, characterized in that: A reinforcement block (14) is fixed to the bottom end of the locking seat (8), and a reinforcement groove matching the reinforcement block (14) is provided at the top end of the lower connecting block (5).

7. The encrypted load box for pile foundation self-balancing static load detection according to claim 6, characterized in that: The reinforcement block (14) is evenly provided with diversion channels (15), and both sides of the locking seat (8) are provided with grouting channels (13), and the bottom ends of the grouting channels (13) extend to the interior of the reinforcement block (14) and communicate with the diversion channels (15).

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