Pile core plugging tool for prefabricated static pressure pile

Abstract

The utility model discloses a prefabricated static pressure pile core plugging tool, which belongs to the technical field of tubular pile construction, and comprises a sealing plate and a plurality of connecting pieces, the connecting pieces are welded on the back surface of the sealing plate in a circumferential array manner, the bottom of each connecting piece is welded with a positioning frame, the positioning frame is cross-shaped, and the connecting pieces are welded on the bottom of the sealing plate. The diameter of the sealing plate is larger than the hole diameter of the pile core by 200 mm, the height of the connecting piece is larger than 100 mm, and the width of the positioning frame is smaller than the hole diameter of the pile core by 10 mm. The cross-shaped positioning frame is tightly matched with the inner wall of the pile core, effective plugging of the pile core is achieved in combination with friction resistance of the rubber anti-skid pad, and the device has the advantages of being low in manufacturing cost, light in material weight, easy to manufacture, convenient and fast to operate, capable of being used repeatedly and the like and is suitable for cross operation of prefabricated static pressure pile construction and earthwork construction. The pile core is effectively prevented from being polluted, the construction period and the manual cleaning cost are greatly saved, and the engineering quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the tubular pile construction technical field especially is related to a prefabricated static pressure pile core plugging tool. BACKGROUND

[0002] In building engineering, prefabricated static pressure piles are widely used in foundation engineering such as high-rise buildings, bridges, wharfs and the like due to the advantages of fast construction speed, high bearing capacity and small environmental impact. However, when earthwork and prefabricated static pressure piles are cross-constructed, impurities such as earthwork and mud are extremely easy to intrude into the pile body through the pile core hole during the construction process due to the hollow structure of the pile core, causing contamination of the pile core. This problem is particularly prominent in projects with complex pile top elevation design and multiple excavations.

[0003] Currently, artificial plugging is mainly used, and construction personnel use temporary materials such as wooden boards and plastic cloth to plug the pile core. However, such materials have low strength and poor sealing performance, and are easy to fall off under the vibration of earthwork machinery or rainwater scouring, resulting in secondary pollution, and manual cleaning is still required in the later period, wasting construction period and comprehensive cost. In addition, manual operation is inefficient and difficult to meet the needs of large-scale construction.

[0004] Based on the above-mentioned defects, a prefabricated static pressure pile core plugging tool with simple structure, convenient installation, reusability and effective prevention of earthwork pollution is proposed to solve the problem of pile core contamination in earthwork cross-operation. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a prefabricated static pressure pile core plugging tool to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides a prefabricated static pressure pile core plugging tool, which comprises a sealing plate and a plurality of connecting pieces, the connecting pieces are circumferentially arrayed and welded on the back of the sealing plate, the bottom of the connecting piece is welded with a positioning frame, the positioning frame is cruciform, the diameter of the sealing plate is greater than the pile core hole diameter by 200mm, the height of the connecting piece is greater than 100mm, and the width of the positioning frame is less than the pile core hole diameter by 10mm.

[0007] Preferably, the shape of the sealing plate is circular, the height is 8-10mm, and the planar area is 0.255-0.3m 2 .

[0008] Preferably, the diameter of the circumferential array formed by the plurality of connecting pieces is less than the width of the positioning frame.

[0009] Preferably, the material of the sealing plate is medium carbon steel, and the connecting piece and the positioning frame are both made of medium carbon round steel.

[0010] Preferably, the end of the positioning frame is fixedly connected with a rubber non-slip pad.

[0011] Therefore, the prefabricated static pressure pile core plugging tool has the following beneficial effects:

[0012] (1) By the close cooperation of the cross-shaped positioning frame and the inner wall of the pile core, combined with the frictional resistance of the rubber non-slip pad, the transverse vibration generated by the earth-moving machinery operation can be effectively resisted, and the displacement or falling of the plugging device can be prevented.

[0013] (2) The device is quickly positioned by using the self-weight, and is recovered by the strong magnet adsorption, so that the single plugging operation time is significantly shortened, the device is suitable for the construction of prefabricated static pressure pile and earthwork construction cross operation, or the construction condition that the pile core is filled with soil due to the complex design of the top elevation of the prefabricated static pressure pile and needs multiple excavations, and the like, the device is convenient to operate, can effectively prevent the pollution of the pile core, greatly saves the construction period time and the labor cleaning cost, and improves the engineering quality.

[0014] (3) The device is made of medium carbon steel material, and has the characteristics of low cost, light material, simple production and reusability.

[0015] The technical scheme of the utility model will be further described in detail below with reference to the drawings and embodiments. DRAWINGS

[0016] Figure 1 is a structural schematic view of the utility model embodiment;

[0017] Signs:

[0018] 1, sealing plate; 2, connecting piece; 3, positioning frame; 4, rubber non-slip pad. CONCRETE EMBODIMENT

[0019] The technical scheme of the utility model will be further described in detail below with reference to the drawings and embodiments.

[0020] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] Example

[0022] like Figure 1 As shown, for AB type PHC pipe piles with a core bore diameter of 370mm, the precast static pressure pile core sealing tool protected by this utility model is used for sealing treatment, as detailed below:

[0023] It includes a sealing plate 1 and multiple connectors 2. The sealing plate 1 is a smooth, round plate made of 8mm thick medium carbon steel plate, with a vertical height of 8mm, a diameter of 570mm, and a planar area of ​​0.255m². 2 The diameter of the sealing plate 1 is 200mm larger than the diameter of the pile core hole, ensuring that the sealing plate 1 can effectively cover the pile core, completely isolate the path of soil and mud intrusion, and ensure that the inside is not contaminated.

[0024] The connectors 2 are arranged in a circular array with a height greater than 100mm. In this embodiment, the height of the connectors 2 is 150mm. They are made of medium carbon round steel with a diameter of 25mm. The diameter of the circular array composed of multiple connectors 2 is smaller than the width of the positioning frame 3 to ensure the positioning effect. In this embodiment, the connectors 2 are welded to the outer edge of the sealing plate 1 55mm inward.

[0025] The bottom of the connector 2 is welded with a positioning frame 3. The positioning frame 3 is cross-shaped and made of medium carbon round steel with a diameter of 25mm and a length of 360mm. The width of the positioning frame 3 is 10mm less than the diameter of the pile core hole, which ensures that the pile core sealing device can be smoothly inserted into the precast static pressure pile and ensures the positioning stability of the positioning frame 3 and the safety and effectiveness of the device.

[0026] The end of the positioning frame 3 is glued with a rubber anti-slip pad 4, which is used to increase the friction of the contact surface between the positioning frame 3 and the inner wall of the pile core, and improve the stability and anti-displacement ability of the positioning frame 3 in the pile core.

[0027] The use method of the prefabricated static pressure pile core plugging tool is as follows:

[0028] 1) Place the sealing plate 1 directly above the pile core hole, and rely on the self weight of the device to naturally sag;

[0029] 2) The self weight of the device makes the positioning frame 3 with a width of 360mm enter the pile core and be clamped inside the pile core, so that the device cannot be displaced laterally, the installation of the prefabricated static pressure pile core plugging tool is completed, and a fixing tool can be placed on the sealing plate 1 to further ensure the plugging effect;

[0030] 3) Before the next process of the pile foundation construction (such as when the pile head needs to be cut), use a strong magnet to attract the sealing plate 1, and complete the recycling of the device for cyclic utilization.

[0031] Therefore, the prefabricated static pressure pile core plugging tool with the above structure can effectively resist the lateral vibration generated by earthmoving machinery operation, prevent displacement or falling of the plugging device, through the close cooperation of the cross-shaped positioning frame and the inner wall of the pile core, and the frictional resistance of the rubber non-slip pad.

[0032] The device is quickly positioned by using the self weight, and is recycled by using the strong magnet, so that the single plugging operation time is significantly shortened, and the device is suitable for construction of prefabricated static pressure piles and earthmoving construction cross operation, or construction conditions that the pile core is filled due to complex design of the pile top elevation and multiple excavations, and the like, the device is convenient to operate, effectively prevents pollution of the pile core, greatly saves construction period time and manual cleaning cost, and improves engineering quality.

[0033] The device is made of medium carbon steel, and has the characteristics of low cost, light material, simple manufacturing, and reusability.

[0034] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solutions of the utility model can still be modified or replaced, and these modifications or replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the utility model.

Claims

1. A tool for sealing the core of a precast static pressure pile, characterized in that: It includes a sealing plate and multiple connectors. The connectors are welded in a circumferential array on the back of the sealing plate. A positioning frame is welded to the bottom of the connector. The positioning frame is cross-shaped. The diameter of the sealing plate is 200mm larger than the diameter of the pile core hole. The height of the connector is greater than 100mm. The width of the positioning frame is 10mm smaller than the diameter of the pile core hole.

2. The precast static pressure pile core sealing tool according to claim 1, characterized in that: The sealing plate is circular in shape, with a height of 8-10 mm and a plane area of ​​0.255-0.3 m². 2 .

3. The precast static pressure pile core sealing tool according to claim 1, characterized in that: The diameter of the circumferential array formed by the plurality of connectors is smaller than the width of the positioning frame.

4. The precast static pressure pile core sealing tool according to claim 1, characterized in that: The sealing plate is made of medium carbon steel, and the connector and the positioning frame are both made of medium carbon round steel.

5. The precast static pressure pile core sealing tool according to claim 1, characterized in that: A rubber anti-slip pad is fixedly connected to the end of the positioning frame.

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