Self-balancing load box with pile foundation longitudinal bar repairing function

Abstract

The utility model belongs to the technical field of pile foundation detection, and particularly relates to a self-balancing load box with a pile foundation longitudinal bar repairing function, which comprises an upper bearing plate, a lower bearing plate and a balancing load box shell, the balancing load box shell is mounted between the upper bearing plate and the lower bearing plate, a clamping groove is formed in the upper side of the balancing load box shell, and a clamping groove is formed in the lower side of the balancing load box shell. Clamping blocks matched with the clamping grooves are arranged on the lower side of the upper bearing plate, the clamping blocks are vertically inserted into the clamping grooves and are in sliding connection with the clamping grooves, a jack is connected to the center between the upper bearing plate and the lower bearing plate through bolts, and the upper side of the telescopic end of the jack is connected with the upper bearing plate; longitudinal bars are evenly installed on the edge of the outer side between the upper bearing plate and the lower bearing plate, the longitudinal bars penetrate through the upper bearing plate and the lower bearing plate, the structure is simple, operation is easy, the requirement for working environment conditions is low, working is stable, and the danger that the bearing capacity of a pile foundation is reduced due to breakage of the longitudinal bars can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of pile foundation detection, in particular to a self-balancing load box with a pile foundation longitudinal reinforcement repair function. Background Art

[0002] The self-balancing static load test is a new technology for pile foundation bearing capacity testing. This method overcomes the shortcomings of traditional testing methods and has the advantages of time saving, labor saving, safety, and low comprehensive testing costs. However, when the existing load box is used, the upper and lower displacement bodies have no slope on the surface, so that during the pouring process, the pile bottom sediment and floating slurry will be blocked at the bottom (or top) of the load box, making the concrete at the load box position not dense after pouring, affecting the overall strength of the cast-in-place pile. Most self-balancing load boxes on the market are composed of loading jacks and displacement meters. During the testing process, the longitudinal reinforcement is broken before loading, and concrete is poured after loading is completed. However, this testing method will cause irreversible damage to the pile foundation, and the longitudinal reinforcement will break at the position of the balanced load box, thereby affecting the overall bearing capacity of the pile foundation. Therefore, it is necessary to develop a new self-balancing loading box that can protect or repair the longitudinal reinforcement. Utility Model Content

[0003] The utility model aims to provide a self-balancing load box with a pile foundation longitudinal reinforcement repair function to solve the above problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-balancing load box with a pile foundation longitudinal reinforcement repair function, comprising an upper bearing plate, a lower bearing plate and a balanced load box shell, a balanced load box shell is installed between the upper bearing plate and the lower bearing plate, a card slot is opened on the upper side of the balanced load box shell, a card block adapted to the card slot is arranged on the lower side of the upper bearing plate, the card block is vertically inserted into the card slot and slidably connected to the card slot, a jack is connected to the center between the upper bearing plate and the lower bearing plate by bolts, and the The upper side of the telescopic end of the jack is connected to the upper bearing plate, and longitudinal reinforcements are evenly installed at the outer edges between the upper bearing plate and the lower bearing plate, and the longitudinal reinforcements penetrate the upper bearing plate and the lower bearing plate. A longitudinal reinforcement connecting seat is sleeved on the outer side of the longitudinal reinforcement between the upper bearing plate and the lower bearing plate, and the longitudinal reinforcement connecting seat is connected and fixed to the upper bearing plate and the lower bearing plate. A grouting pipe is installed between the upper bearing plate and the outer shell of the balanced load box, and a grouting hole and a grouting groove are opened on the longitudinal reinforcement connecting seat, and a displacement sensor is installed between the upper bearing plate and the lower bearing plate.

[0005] Preferably, the upper bearing plate and the lower bearing plate are both fixedly connected with stiffening ribs on their sides away from each other.

[0006] Preferably, anchoring steel bars are welded to the sides of the upper bearing plate and the lower bearing plate that are away from each other.

[0007] Preferably, a return pipe is installed between the upper bearing plate and the balanced load box shell.

[0008] Preferably, the longitudinal reinforcement connecting seat is connected to the upper bearing plate and the lower bearing plate by fastening bolts.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1) The utility model has a simple structure, is easy to operate, has low requirements on working environment conditions, works stably, and can avoid the risk of reduced bearing capacity of pile foundation due to longitudinal reinforcement fracture;

[0011] 2) The longitudinal reinforcement connection seat is set and fixed between the upper bearing plate and the lower bearing plate to prevent the longitudinal reinforcement from being broken after loading, thereby reducing the bearing capacity of the pile foundation. Grouting holes and grouting grooves are opened on the longitudinal reinforcement connection seat to make the concrete filled in the longitudinal reinforcement connection seat more compact.

[0012] 3) Through the setting of grouting pipes and return pipes, the balanced load box can be filled with concrete after loading is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the internal structure of the self-balancing load box of the utility model;

[0014] Figure 2 It is a top view structural diagram of the longitudinal reinforcement distribution of the utility model;

[0015] Figure 3 This is a schematic diagram of the grouting hole structure of the utility model.

[0016] In the figure: 1. upper bearing plate; 2. lower bearing plate; 3. balanced load box shell; 4. slot; 5. stiffening rib; 6. anchor steel bar; 7. longitudinal reinforcement connecting seat; 8. fastening bolt; 9. displacement sensor; 10. jack; 11. grouting pipe; 12. return pipe; 13. longitudinal reinforcement; 14. grouting hole; 15. grouting groove; 16. block. DETAILED DESCRIPTION

[0017] 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] Example:

[0021] See also Figure 1-3The utility model provides a technical solution: a self-balancing load box with a pile foundation longitudinal reinforcement repair function, comprising an upper bearing plate 1, a lower bearing plate 2 and a balanced load box shell 3, a balanced load box shell 3 is installed between the upper bearing plate 1 and the lower bearing plate 2, a card slot 4 is opened on the upper side of the balanced load box shell 3, a card block 16 adapted to the card slot 4 is arranged on the lower side of the upper bearing plate 1, the card block 16 is vertically inserted into the card slot 4 and is slidably connected to the card slot 4, the lower bearing plate 2 is fixedly welded to the bottom of the balanced load box shell 3, and the self-balancing load box meets the displacement requirements during loading through the cooperation of the card slot 4 and the card block 16, so that the self-balancing load box can meet the displacement requirements during loading, and can move vertically during loading to achieve small displacement, a jack 10 is connected to the center between the upper bearing plate 1 and the lower bearing plate 2 by bolts, and the jack 10 is an integrated multi-tonnage high-precision jack, and the upper side of the telescopic end of the jack 10 is connected to the upper bearing plate 1, and the upper bearing plate 1 and the lower bearing plate Longitudinal reinforcements 13 are evenly installed at the outer edges between the bearing plates 2. The longitudinal reinforcements 13 penetrate the upper bearing plate 1 and the lower bearing plate 2. A longitudinal reinforcement connecting seat 7 is sleeved on the outer side of the longitudinal reinforcement 13 between the upper bearing plate 1 and the lower bearing plate 2. The longitudinal reinforcement connecting seat 7 is connected and fixed to the upper bearing plate 1 and the lower bearing plate 2. The longitudinal reinforcement connecting seat 7 is located in the balanced load box shell 3. A grouting pipe 11 is installed between the upper bearing plate 1 and the balanced load box shell 3 so that the self-balancing load box can be filled with concrete after loading is completed. Grouting holes 14 and grouting grooves 15 are opened on the longitudinal reinforcement connecting seat 7 to make the concrete filled in the longitudinal reinforcement connecting seat 7 more dense. A displacement sensor 9 is installed between the upper bearing plate 1 and the lower bearing plate 2. The displacement sensor 9 is located in the balanced load box shell 3. The displacement sensor 9 is a high-precision displacement meter. By using the built-in high-precision displacement meter, the measurement result can be made more accurate and the damage of the external displacement meter caused by construction can be avoided.

[0022] The upper bearing plate 1 and the lower bearing plate 2 are both fixedly connected to one side away from each other with a stiffening rib 5 to ensure the compressive stability of the upper bearing plate 1 and the lower bearing plate 2 .

[0023] Anchor steel bars 6 are welded to the sides of the upper bearing plate 1 and the lower bearing plate 2 that are away from each other, so as to avoid danger caused by a loose connection between the pile foundation and the balanced load box.

[0024] A return pipe 12 is installed between the upper bearing plate 1 and the balanced load box housing 3 .

[0025] The longitudinal reinforcement connection seat 7 is connected to the upper bearing plate 1 and the lower bearing plate 2 by fastening bolts 8. The longitudinal reinforcement connection seat 7 is two tubes that can realize vertical sliding. The fastening bolts 8 are located at the upper and lower ends of the longitudinal reinforcement connection seat 7 and are screwed to the upper bearing plate 1 and the lower bearing plate 2 respectively.

[0026] Working principle: The longitudinal reinforcement connection seat 7 is fixed between the upper bearing plate 1 and the lower bearing plate 2 to prevent the longitudinal reinforcement 13 from being broken after loading and reducing the bearing capacity of the pile foundation. The grouting pipe 11 and the return pipe 12 are arranged so that the balanced load box can be filled with concrete after loading is completed. The grouting holes 14 and the grouting grooves 15 are opened on the longitudinal reinforcement connection seat 7 to make the concrete filled in the longitudinal reinforcement connection seat 7 more dense and strengthen the longitudinal reinforcement breaking area. The pile foundation segment connection is made more firmly connected by the anchoring steel bar 6, which is beneficial to strengthen the bearing capacity of the pile foundation.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-balancing load box with a pile foundation longitudinal reinforcement repair function, comprising an upper bearing plate (1), a lower bearing plate (2) and a balanced load box shell (3), characterized in that: A balanced load box shell (3) is installed between the upper bearing plate (1) and the lower bearing plate (2); a slot (4) is provided on the upper side of the balanced load box shell (3); a block (16) adapted to the slot (4) is provided on the lower side of the upper bearing plate (1); the block (16) is vertically inserted into the slot (4) and slidably connected to the slot (4); a jack (10) is connected to the center between the upper bearing plate (1) and the lower bearing plate (2) by bolts; the upper side of the telescopic end of the jack (10) is connected to the upper bearing plate (1); and the outer edge between the upper bearing plate (1) and the lower bearing plate (2) is Longitudinal bars (13) are evenly installed at the upper and lower bearing plates (1) and the longitudinal bars (13) penetrate the upper bearing plate (1) and the lower bearing plate (2). A longitudinal bar connecting seat (7) is sleeved on the outer side of the longitudinal bars (13) between the upper and lower bearing plates (1) and the longitudinal bar connecting seat (7) is connected and fixed to the upper and lower bearing plates (1) and the upper bearing plate (2). A grouting pipe (11) is installed between the upper bearing plate (1) and the balanced load box shell (3). A grouting hole (14) and a grouting groove (15) are opened on the longitudinal bar connecting seat (7). A displacement sensor (9) is installed between the upper and lower bearing plates (1) and the lower bearing plate (2).

2. A self-balancing load box with pile foundation longitudinal reinforcement repair function according to claim 1, characterized in that: The upper bearing plate (1) and the lower bearing plate (2) are both fixedly connected to one another on one side thereof that is away from the other. A stiffening rib (5) is provided on the other side.

3. The self-balancing load box with pile foundation longitudinal reinforcement repair function according to claim 1, characterized in that: Anchor steel bars (6) are welded to the sides of the upper bearing plate (1) and the lower bearing plate (2) that are away from each other.

4. The self-balancing load box with pile foundation longitudinal reinforcement repair function according to claim 1, characterized in that: A return pipe (12) is installed between the upper bearing plate (1) and the balanced load box shell (3).

5. The self-balancing load box with pile foundation longitudinal reinforcement repair function according to claim 1, characterized in that: The longitudinal reinforcement connection seat (7) is connected to the upper bearing plate (1) and the lower bearing plate (2) via fastening bolts (8).

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