Pile foundation construction recovery positioning tool and system

Abstract

The utility model relates to a pile foundation construction recovery positioning tool and a positioning system, and belongs to the technical field of bridge construction engineering. Comprising a chassis, the edge of the chassis is provided with a fixing lug, and the fixing lug is provided with a round hole for fixing a steel nail or an expansion screw; the top disc is connected with the bottom disc through a vertical rod, and a fine adjustment stroke space hole is formed in the top disc. The lower ends of the three vertical rods are welded to the triangular vertexes of the base plate, and the upper ends of the three vertical rods are provided with screws and fixedly connected with the top plate through nuts and lock nuts; the inclined supporting rods are welded between the adjacent vertical rods; and the positioning rod is vertically arranged on the fine adjustment stroke space hole of the top tray through a positioning rod nut. The positioning device has the advantages of wide field condition adaptation range, quick and accurate positioning recovery, capability of observing whether the positioning change is influenced by vibration at any time and the like.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction engineering technology, and in particular to a pile foundation construction restoration positioning tool and system. Background Technology

[0002] As the most common foundation type in bridges, buildings, and other engineering projects, the construction quality of pile foundations directly affects the stability and safety of the overall structure. Drilled cast-in-place piles are widely used due to their strong adaptability and high bearing capacity, but pile position deviation, as one of the key quality indicators, must be strictly controlled within the design allowable range. During construction, a common method is to set up saddle piles around the pile location and use string lines for cross-positioning to restore and verify the pile center position. However, existing technologies have the following significant drawbacks:

[0003] Insufficient precision: Traditional saddle stakes rely on manual string line positioning, which is prone to accumulation of positioning errors due to inaccurate verticality adjustment and string height deviation, making it difficult to meet the requirements of high-precision construction.

[0004] Poor stability: Mechanical vibration and soil disturbance at the construction site can easily cause the saddle piles to shift or tilt, and the device status changes cannot be monitored in real time, resulting in reduced reliability of pile position restoration.

[0005] Limited adaptability: The fixing method is limited (such as fixing only with steel nails), resulting in insufficient installation stability under different site conditions such as soft soil and concrete, and it lacks convenient leveling and fine-tuning functions.

[0006] The aforementioned problems not only affect construction efficiency but may also lead to rework, increased costs, and even safety hazards. Therefore, there is an urgent need for a new type of pile foundation construction repositioning tool to address the shortcomings of existing technologies and improve construction quality and efficiency. Utility Model Content

[0007] This utility model provides a pile foundation construction restoration positioning tool and system, which adopts the following technical solution: A pile foundation construction restoration positioning tool, comprising:

[0008] The chassis has a triangular structure with fixing ears on its edges. The fixing ears have round holes for fixing with steel nails or expansion bolts.

[0009] The top plate is a triangular steel plate connected to the base plate by a vertical rod, and the top plate has a fine-tuning stroke space hole;

[0010] Three vertical rods are welded to the apex of the triangle on the chassis at the lower end and have screws at the upper end, which are fixedly connected to the top plate by nuts and lock nuts;

[0011] Diagonal bracing, welded between adjacent vertical members;

[0012] The positioning rod is vertically installed on the fine-tuning stroke space hole of the top plate via the positioning rod nut and the positioning rod lock nut.

[0013] Furthermore, the restoration positioning fixture is also equipped with two horizontal rulers, which are perpendicular to each other on the surface of the top plate.

[0014] Furthermore, the angle between the diagonal brace and the vertical rod is 30°-60°, and they are welded together to form a triangular support structure.

[0015] Furthermore, the chassis can also be fixed by being buried in a sand backfill pit.

[0016] Furthermore, the chassis thickness is 5-8mm, the diameter of the vertical rod and diagonal brace is 20mm, and the thickness of the top plate is 4-6mm.

[0017] A positioning system for pile foundation construction restoration positioning fixtures includes four restoration positioning fixtures. After the center of the pile foundation is laid out, they are led out in pairs at a certain distance and connected to each other by a tether.

[0018] Furthermore, the included angle between the adjacent traction wires is 90°.

[0019] In summary, this utility model has the following beneficial technical effects:

[0020] 1. Both the chassis and top plate of this utility model adopt a triangular steel plate structure. Utilizing the geometric stability of the triangle, the tooling's resistance to deformation is ensured under complex construction environments (such as vibration and soil stress). The fixing ears on the edge of the chassis support fixing with steel nails / expansion bolts or burying in sand backfill. It can also be fixed by burying the chassis in sand backfill pits, adapting to different geological conditions.

[0021] 2. A level is installed on the top plate surface, which helps construction workers to adjust the level of the top plate surface by using the lock nuts and bolts of each vertical rod. This allows for quick calibration of the tooling level, avoids positioning errors caused by tilting, and improves installation efficiency.

[0022] 3. By arranging four sets of tools in pairs opposite each other, an orthogonal cross-shaped positioning coordinate system is formed (the angle between adjacent guide lines is 90°). A fixed distance is drawn outward from the center of the pile foundation as the origin, and the position of the pile foundation is checked in real time using the intersection of the guide lines. This design transforms single-point positioning into planar coordinate system positioning, significantly improving the accuracy of layout and the efficiency of re-measurement.

[0023] 4. The top plate fine-tuning stroke space hole allows the positioning rod to adjust its position within the hole via the positioning rod nut, achieving fine calibration in the horizontal direction and meeting the high-precision requirements of the pile foundation center coordinates. Attached Figure Description

[0024] Figure 1This is a schematic diagram of a pile foundation construction restoration and positioning tooling structure according to the present invention;

[0025] Figure 2 This is a schematic diagram of the positioning system of a pile foundation construction restoration positioning tool according to the present invention.

[0026] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Fixing lug; 3. Round hole; 4. Top plate; 5. Vertical rod; 6. Fine adjustment travel space hole; 7. Screw; 8. Nut; 9. Lock nut; 10. Diagonal brace; 11. Positioning rod; 12. Level; 13. Wire; 14. Positioning rod nut; 15. Positioning rod lock nut; 16. Pile foundation center layout. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 A specific embodiment of a pile foundation construction restoration positioning fixture is shown, comprising: a base plate 1, a top plate 4, a vertical rod 5, a diagonal brace 10, and a positioning rod 11.

[0029] Specifically, the chassis 1 has a triangular structure with fixing ears 2 on its edges. The fixing ears 2 have round holes 3 for fixing with steel nails or expansion screws. The top plate 4 is a triangular steel plate connected to the chassis 1 by vertical rods 5. The top plate 4 has a fine-tuning stroke space hole 6. There are three vertical rods 5, with the lower end welded to the apex of the triangle on the chassis 1 and the upper end equipped with a screw 7. The apex of the triangle on the top plate 4 has three screw holes. The screw 7 on the vertical rods 5 is fixedly connected to the top plate 4 by nuts 8 and lock nuts 9. The diagonal brace 10 is welded between adjacent vertical rods 5. The positioning rod 11 is vertically installed on the fine-tuning stroke space hole 6 of the top plate 4 by positioning rod nuts 14 and positioning rod lock nuts 15.

[0030] Specifically, the restoration positioning fixture is also equipped with two level rulers 12, which are perpendicular to each other on the surface of the top plate 4. The construction personnel can adjust the level of the top plate 4 according to the level rulers 12 by cooperating with the locking nuts 9 and nuts 8 of each vertical rod 5, so as to quickly calibrate the level of the fixture, avoid positioning errors caused by tilting, and improve installation efficiency.

[0031] Specifically, the fine-tuning stroke space hole 6 on the top plate 4 allows the positioning rod 11 to adjust its position within the fine-tuning stroke space hole 6 via the positioning rod nut 14 and the positioning rod lock nut 15, thereby achieving fine calibration in the horizontal direction and meeting the high-precision requirements of the pile foundation center coordinates.

[0032] Specifically, the round holes 3 of the fixing ears 2 on the edge of the chassis 1 support the fixing with steel nails / expansion bolts or the backfilling with sand. The chassis 1 can also be fixed by being buried in the backfill pit, adapting to different geological conditions.

[0033] In other preferred embodiments, the angle between the diagonal brace 10 and the vertical rod 5 is 30°-60°, and they are welded together to form a triangular support structure, which further enhances the overall rigidity and reduces vertical and horizontal displacement.

[0034] In other preferred embodiments, the chassis 1 has a thickness of 5-8 mm, the vertical rod 5 and the diagonal brace 10 have a diameter of 20 mm, and the top plate 4 has a thickness of 4-6 mm.

[0035] Specifically, the thickness of the base plate 1 is 5-8mm and the thickness of the top plate 4 is 4-6mm, which can balance structural strength and lightweight, and avoid foundation settlement due to excessive self-weight; the material of the vertical rod 5 / diagonal brace 10 is round steel, with a diameter of 20mm being preferred. The welding process is mature, meets the construction load, and ensures stability.

[0036] like Figure 2 The positioning system shown is a positioning tool for pile foundation construction restoration positioning. It includes four restoration positioning tools. After the center of the pile foundation is laid out 16, they are led out in pairs at a certain distance and connected to each other by tie lines 13. The included angle between adjacent tie lines 13 is 90°, which is the optimal value.

[0037] Specifically, after laying out the center of the pile foundation at 16, the positioning tools are led out in pairs at a certain distance, with the angle between them being 90°. After the positioning tools are roughly positioned, they can be fixed to the cement surface with steel nails driven into the soil, expansion bolts, or by digging a pit and backfilling with sand, depending on the site conditions. When using them, first adjust the upper and lower nuts 8 and lock nuts 9 of the three vertical rods 5 to finely level the top plate 4. After fine leveling, adjust the positioning rod nut 14 and positioning rod lock nut 15 to accurately position and lock the horizontal position of the positioning rod 11. During the pile foundation construction, observe whether the level 12 on the top plate 4 is centered to determine if the state of the entire device has changed. At the same time, the accurate position information of the positioning rod 11 can be collected by measuring instruments to ensure the accuracy of pile position restoration.

[0038] Specifically, this tooling device requires four units to be used in conjunction.

[0039] Specifically, this invention effectively solves the problems of insufficient positioning accuracy and poor environmental adaptability in pile foundation construction through three core elements: geometric stability design, adjustable fine-tuning mechanism, and orthogonal positioning system, thus combining economy and reliability. Its modular and adjustable characteristics meet the needs of modern engineering mechanization and standardization, and have high promotional value.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A pile foundation construction restoration positioning tool, characterized in that, include: The chassis (1) has a triangular structure and a fixing lug (2) on its edge. The fixing lug (2) has a round hole (3) for fixing with steel nails or expansion screws. The top plate (4) is a triangular steel plate and is connected to the bottom plate (1) by a vertical rod (5). The top plate (4) has a fine-tuning stroke space hole (6). Three vertical rods (5) are welded at the lower end to the apex of the triangle on the base plate (1), and the upper end is provided with a screw (7), which is fixedly connected to the top plate (4) through a nut (8) and a lock nut (9); Diagonal bracing (10) is welded between adjacent vertical bars (5); The positioning rod (11) is vertically installed on the fine-tuning stroke space hole (6) of the top plate through the positioning rod nut (14) and the positioning rod lock nut (15).

2. The pile foundation construction restoration positioning tool according to claim 1, characterized in that, The restoration positioning fixture is also equipped with two horizontal rulers (12), which are perpendicular to each other on the surface of the top plate (4).

3. The pile foundation construction restoration positioning tooling according to claim 1, characterized in that, The angle between the diagonal brace (10) and the vertical rod (5) is 30°-60°, and they are welded together to form a triangular support structure.

4. The pile foundation construction restoration positioning tool according to claim 1, characterized in that, The chassis (1) can also be fixed by being buried in a sand backfill pit.

5. The pile foundation construction restoration positioning tooling according to claim 1, characterized in that, The thickness of the chassis (1) is 5-8mm, the diameter of the vertical rod (5) and the diagonal brace (10) is 20mm, and the thickness of the top plate (4) is 4-6mm.

6. The positioning system for the pile foundation construction restoration positioning fixture according to any one of claims 1-5, characterized in that, It includes four restoration positioning tools. After laying out (16) at the center of the pile foundation, they are led out in pairs at a certain distance and connected to each other by a tether (13).

7. The positioning system for a pile foundation construction restoration positioning fixture according to claim 6, characterized in that, The included angle between the adjacent ties (13) is 90°.

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